Vinyl Acetate Ethylene Copolymer Emulsion

VAE Emulsion, derived from the copolymerization of vinyl acetate and ethylene, offers a myriad of benefits that make it highly desirable as a binder. One of its outstanding properties is its excellent flexibility. This characteristic allows sealants formulated with VAE Emulsion to withstand movement and expansion without cracking or compromising their integrity.   In the textile industry, VAE Emulsion has gained significant traction as a binder for various applications. It provides excellent adhesion to different types of fabrics and substrates, ensuring durability and resilience. Whether it is for laminating textiles, carpet backing, or bonding layers in composite materials, VAE Emulsion delivers exceptional performance. It enables the production of high-quality textile products that can withstand repeated use, washing, and other environmental factors.   Architectural sealants play a crucial role in the construction industry, providing protection against water intrusion, air leakage, and noise transmission. VAE Emulsion's unique properties make it an ideal binder for architectural sealants. Its superior flexibility ensures long-term performance, even in areas prone to movement, such as window frames, expansion joints, and curtain walls. Additionally, VAE Emulsion offers excellent adhesion to a variety of substrates, including concrete, metal, and wood, providing reliable and durable seals that can withstand harsh weather conditions.   One of the primary advantages of VAE Emulsion-based sealants is their exceptional crack resistance. The inherent flexibility of the copolymer allows the sealant to absorb stress and movement without developing cracks or losing adhesion. This attribute ensures that the sealant maintains its effectiveness over time, reducing the need for frequent repairs or replacements. Moreover, VAE Emulsion-based sealants exhibit excellent weather resistance, UV stability, and durability, ensuring long-lasting performance in a wide range of environments. VAE Emulsion has become the preferred binder for creating flexible and crack-resistant sealants in various industries, including textiles and architecture. Its outstanding flexibility, adhesion properties, and durability make it an ideal choice for applications where movement and environmental factors are significant challenges. Whether in the textile industry, where VAE Emulsion ensures the strength and durability of fabric laminations, or in architectural sealants that require long-term performance and crack resistance, VAE Emulsion continues to deliver exceptional results.    Website: www.elephchem.com Whatsapp: (+)86 13851435272 E-mail: admin@elephchem.com ElephChem Holding Limited, professional market expert in Polyvinyl Alcohol(PVA) and Vinyl Acetate–ethylene Copolymer Emulsion(VAE) with strong recognition and excellent plant facilities of international standards.

Vinyl Acetate Ethylene copolymer emulsion, also known as VAE emulsion, is a versatile material that has gained significant recognition in the market. One of the key factors driving its popularity is its exceptional performance in the textile industry. VAE emulsion is widely used for textile sizing, a vital process that imparts desirable properties to fabrics, such as strength, stiffness, and resistance to shrinkage. The use of VAE emulsion in textile sizing results in improved yarn cohesion and enhanced fabric stability, leading to high-quality and durable garments.   Another area where VAE emulsion is gaining prominence is in the architectural field. As a binder, VAE emulsion(like CW40-707) is extensively employed in architectural coatings, including exterior paints, interior wall paints, and textured coatings. Its excellent film-forming capabilities provide coatings with enhanced weather resistance, water repellency, and durability. Additionally, VAE emulsion improves color stability and gloss, resulting in visually appealing finishes for various architectural surfaces.   The versatility of VAE emulsion extends beyond textiles and coatings. It finds applications in other sectors, including adhesive production. Many adhesives on the market use VAE emulsion as a key ingredient due to its outstanding adhesive properties, flexibility, and high bonding strength. Whether it's woodworking, paperboard lamination, or packaging, VAE emulsion delivers reliable adhesion, ensuring the integrity of bonded surfaces, such as CW40-705, CW40-716.   The increasing popularity of VAE emulsion can be attributed to its unique characteristics that set it apart from traditional materials. VAE emulsion is a water-based dispersion made of vinyl acetate and ethylene monomers. This copolymerization process results in a high-quality emulsion that offers excellent stability, exceptional adhesive properties, and enhanced performance in various applications.   Moreover, VAE emulsion is recognized for its eco-friendly nature. As a water-based synthetic polymer, it is relatively safer and more sustainable compared to solvent-based alternatives. Its low volatile organic compound (VOC) content makes it environmentally friendly and compliant with stringent regulations.   When it comes to choosing VAE emulsion, it is essential to partner with a reliable supplier like us who can provide high-quality Vinyl Acetate Ethylene copolymer emulsion tailored to your specific needs. Contact us today to explore how VAE emulsion can transform your industry and elevate your products to new heights performance.   Website: www.elephchem.com Whatsapp: (+)86 13851435272 E-mail: admin@elephchem.com ElephChem Holding Limited, professional market expert in Polyvinyl Alcohol(PVA) and Vinyl Acetate–ethylene Copolymer Emulsion(VAE) with strong recognition and excellent plant facilities of international standards.

VAE emulsion, short for Vinyl Acetate Ethylene copolymer emulsion, is a versatile material widely used in various industries. Its unique properties make it an essential ingredient in the manufacturing of adhesives, paints, coatings, and construction materials.   VAE Emulsion is a water-based dispersion composed of vinyl acetate and ethylene monomers. This copolymerization results in a high-quality emulsion that offers outstanding adhesive properties, excellent flexibility, and exceptional bonding strength. VAE Emulsion acts as a binder, providing exceptional stability and enhancing the performance of various end products.   One of the notable applications of VAE Emulsion is in the production of adhesives. Due to its excellent adhesion properties, VAE Emulsion is widely used in industries such as woodworking, paperboard lamination, and packaging. The high bonding strength and flexibility of VAE Emulsion enable it to deliver durable and long-lasting adhesion, ensuring the integrity of bonded surfaces.   In the world of architectural coatings, VAE Emulsion plays a crucial role as a binder. It is known for its exceptional film-forming abilities, providing coatings with excellent weather resistance, water repellency, and durability. Moreover, VAE Emulsion enhances the color stability and gloss of coatings, resulting in a visually appealing finish. Its versatility allows it to be used in various coating systems, including exterior paints, interior wall paints, and textured coatings.   Construction materials also benefit from the extraordinary properties of VAE Emulsion. It can be combined with cement, gypsum, or other powders to produce VAE Redispersible Powder. When used in tile adhesives, grouts, and self-leveling compounds, VAE Redispersible Powder enhances workability, water retention, and adhesion strength. This combination ensures reliable performance in demanding applications, such as tile installation and repair.   While the quality of the product itself is essential, exceptional service adds significant value to the overall customer experience. ELEPHCHEM, a leading supplier of VAE Emulsion and related products, is known for its commitment to providing comprehensive services. From technical support to customized solutions, ELEPHCHEM assists clients in optimizing their applications and achieving the desired results. Their expertise and industry knowledge have made them a trusted partner for many businesses.   Website: www.elephchem.com Whatsapp: (+)86 13851435272 E-mail: admin@elephchem.com ElephChem Holding Limited, professional market expert in Polyvinyl Alcohol(PVA) and Vinyl Acetate–ethylene Copolymer Emulsion(VAE) with strong recognition and excellent plant facilities of international standards.

VAE emulsion is short for ethylene acetate-ethylene copolymerization emulsion, which is a polymer emulsion made of ethylene acetate and ethylene monomer as the basic raw materials and other auxiliary materials through emulsion. Products with ethylene acetate content in the range of 70%～95% are usually in the emulsion state, called VAE emulsions.     VAE Emulsion is a copolymer of vinyl acetate with low ethylene content having been developed as a powerful adhesive base. It has excellent performance in environmental protection, has good adhesion and environmental protection properties, and is widely used in green fine chemical products. Due to its excellent comprehensive performance and environmental protection characteristics, VAE emulsion is very popular in the market and has become an indispensable green fine chemical product. ‌VAE emulsion is widely used in building materials, textiles, printing and dyeing, papermaking, adhesives, etc. Recommended: ★ ;   Useful: ●   Website: www.elephchem.com Whatsapp: (+)86 13851435272 E-mail: admin@elephchem.com ElephChem Holding Limited, professional market expert in Polyvinyl Alcohol(PVA) and Vinyl Acetate–ethylene Copolymer Emulsion(VAE) with strong recognition and excellent plant facilities of international standards.  

VAE emulsion is the abbreviation of vinyl acetate-ethylene copolymer emulsion. It is a polymer emulsion formed by emulsion polymerization of vinyl acetate and ethylene monomer as basic raw materials with other auxiliary materials.‌The production process of VAE emulsion mainly includes the following steps‌: The main raw materials of VAE emulsion include ethylene, vinyl acetate, emulsifier and initiator. Ethylene can be made from naphtha or natural gas; vinyl acetate is made from the reaction of ethylene and acetic acid.   After mixing ethylene and vinyl acetate in a certain proportion, they are passed into the reactor, initiators and emulsifiers are added, and emulsion polymerization is carried out under appropriate temperature and pressure. Control the reaction speed and temperature to completely convert the monomer and generate VAE emulsion‌.   The generated VAE emulsion needs to be degassed to remove unreacted monomers and low molecular volatiles. Adjust the pH value of the emulsion to make it more stable, and perform filtration to remove impurities and solid particles in the emulsion.   Put the processed VAE emulsion into a special container, seal it and store it away from direct sunlight and high temperature environment.   The production and use of VAE emulsion must comply with national and local environmental protection standards, including emission standards for waste water, exhaust gas, noise, etc. Waste water, waste gas and other waste generated during the production process need to be effectively treated and discharged to ensure compliance with environmental protection requirements.   Website: www.elephchem.com Whatsapp: (+)86 13851435272 E-mail: admin@elephchem.com ElephChem Holding Limited, professional market expert in Polyvinyl Alcohol(PVA) and Vinyl Acetate–ethylene Copolymer Emulsion(VAE) with strong recognition and excellent plant facilities of international standards.

Polyvinyl acetate (PVAC), also known as polyvinyl acetate. It is a polymer of vinyl acetate (vinyl acetate) with the chemical formula (C4H6O2)n. It is a colorless viscous liquid or light yellow transparent glassy particles, soluble in solvents such as benzene, acetone and chloroform. Vinyl acetate, the raw material used in PVAc emulsion, is one of the fifty most produced chemical raw materials in the world and is also the cheapest polymer monomer.   China's vinyl acetate output ranks among the top in the world. At present, more than 80% of the domestic vinyl acetate is used in the production of vinylon and polyvinyl alcohol. At the same time, downstream products such as PVAc emulsion, polyvinyl acetal and other copolymers are derived. At present, the domestic production of PVAc emulsion is more than 1 million tons.   The application fields of PVAc emulsion are very wide: 1. Construction industry, can be used for interior wall decorative coatings, colorful coatings, etc. It is also used for cement modification to improve the tensile strength, adhesion and chemical stability of cement mortar or concrete, and to prevent cracking, etc. 2. In the building materials industry, adhesive glue can be produced, such as woodworking glue, white latex, furniture glue, super glue, etc. 3. Paper industry, can be used as adhesive, impregnating agent, rewetting adhesive, 4. Packaging printing, can be used for plastic-plastic bonding, aluminum-plastic bonding, and post-processing of printed paper products In addition, it has certain applications in textile printing and dyeing, fiberglass processing, and biomedicine.   Website: www.elephchem.com Whatsapp: (+)86 13851435272 E-mail: admin@elephchem.com ElephChem Holding Limited, professional market expert in Polyvinyl Alcohol(PVA) and Vinyl Acetate–ethylene Copolymer Emulsion(VAE) with strong recognition and excellent plant facilities of international standards.

EVA film is a thermosetting and sticky film, mainly used in the middle of laminated glass. It has the characteristics of high transparency, high adhesion, good durability and easy storage. ‌ ‌High transparency allows light to penetrate better, reducing light energy loss and improving photoelectric conversion efficiency.   ‌High adhesion, able to firmly bond various materials, effectively ensuring the stability between components.   ‌Good durability, able to resist high temperature, moisture, ultraviolet rays and other environmental factors, ensuring long-term use.   ‌Easy to store, it can be stored at room temperature and is not affected by humidity and water absorption.   ‌Low melting point, easy to flow, suitable for lamination process of various glass, such as patterned glass, tempered glass, curved glass, etc.   Strong sound insulation effect. Compared with PVB film, EVA film has stronger sound insulation effect, especially for high-frequency sound.   Due to various excellent properties, EVA film is widely used in current components and various optical products, especially playing an important role in the packaging of solar photovoltaic modules.‌Solar photovoltaic module packaging, EVA film is used to fix solar cells and provide insulation protection, optical coupling, and provide moderate mechanical strength and heat conduction paths.   In recent years, with the rise and development of the global photovoltaic industry, the market demand for EVA has increased year by year, which has broad market prospects. There is also great room for improvement in the domestic EVA film market.   Website: www.elephchem.com Whatsapp: (+)86 13851435272 E-mail: admin@elephchem.com ElephChem Holding Limited, professional market expert in Polyvinyl Alcohol(PVA) and Vinyl Acetate–ethylene Copolymer Emulsion(VAE) with strong recognition and excellent plant facilities of international standards.

Vinyl acetate-ethylene copolymer emulsion is a polymer emulsion made of vinyl acetate and ethylene as basic raw materials, referred to as VAE emulsion or EVA emulsion in English. Since its introduction in 1965, it has been widely used in adhesives, building materials, coatings, papermaking, fabric processing, tobacco, packaging and other fields due to its excellent adhesion, permanent flexibility, good acid and alkali resistance and other properties.   In order to improve the performance of VAE emulsion and expand its application range, a lot of fruitful modification research has been done to improve the water resistance, mechanical strength, heat resistance, adhesion, curing speed and other aspects of VAE emulsion. These modification studies are mainly focused on the following directions: additive method, copolymerization method, composite modification method and blending method. Among them, the blending method is a method of physically blending VAE emulsion with one or more polymer solutions or emulsions to form a multi-component system. The properties of the various components of the blending method can complement each other, thereby obtaining new materials with better performance or new properties, reducing costs while potentially expanding the application field of VAE emulsion, allowing VAE emulsion to play a greater application value.   Polymer solutions or polymer emulsions that are often blended with VAE emulsions include: rosin resin, phenolic resin, urea-formaldehyde resin, terpene resin, polyurethane emulsion, acrylic emulsion, styrene-acrylic emulsion, vinyl acetate emulsion, styrene-butadiene emulsion, etc. Since VAE emulsion has good miscibility with a variety of emulsions, blending is the simplest and most direct way to achieve complementary properties of the blended components and obtain new properties.   PVAc emulsion was used to modify VAE emulsion, and at the same time, thickening resin and additives were used to synthesize an adhesive suitable for bonding non-polar plastic materials. The addition of thickening resin significantly improved the bonding strength of the emulsion; the addition of acidic metal salt crosslinking agent improved the water resistance of the system without affecting the stability of the emulsion.   VAE emulsion was modified by blending pure acrylic emulsion, acetic acid acrylic emulsion, silicone acrylic emulsion, styrene acrylic emulsion and VAE emulsion to prepare adhesive. The results show that the VAE emulsion modified by acrylate emulsion has been greatly improved in bonding performance and peel strength. Among them, the adhesive obtained by using acetic acid acrylic emulsion to modify VAE emulsion has the best comprehensive performance, especially the most obvious improvement in high temperature adhesion.   Website: www.elephchem.com Whatsapp: (+)86 13851435272 E-mail: admin@elephchem.com ElephChem Holding Limited, professional market expert in Polyvinyl Alcohol(PVA) and Vinyl Acetate–ethylene Copolymer Emulsion(VAE) with strong recognition and excellent plant facilities of international standards.  

Vinyl acetate-ethylene copolymer (VAE) emulsion is the abbreviation of vinyl acetate-ethylene copolymer emulsion. It is a polymer emulsion formed by copolymerizing vinyl acetate and ethylene monomers with other auxiliary materials through emulsion polymerization.   White latex is a water-soluble adhesive, a thermoplastic adhesive produced by polymerization of vinyl acetate monomer under the action of an initiator. Usually called white latex or PVAC emulsion for short, the chemical name is polyvinyl acetate adhesive, which is synthesized from acetic acid and ethylene to vinyl acetate, with the addition of titanium dioxide (low-grade ones add light calcium, talc, and other powders). It is then made by emulsion polymerization. A thick milky white liquid.   VAE emulsion has the advantages of permanent softness, water resistance, low temperature resistance, fast bonding speed, high bonding strength, and is safe and non-toxic. VAE emulsion is widely used in adhesives, exterior wall insulation, building waterproofing, coatings, composite packaging materials, building cement mortar modification, non-woven fabric manufacturing, paper coating and general adhesive for various polar and non-polar materials. Access and other fields.   The characteristics of white latex include normal temperature curing, fast curing, high bonding strength, good toughness and durability of the bonding layer and not easy to age. White latex is a widely used water-soluble adhesive. It is mainly used in wood bonding, construction industry, coatings, etc. It is also used in furniture assembly, surface repair, etc.   Website: www.elephchem.com Whatsapp: (+)86 13851435272 E-mail: admin@elephchem.com ElephChem Holding Limited, professional market expert in Polyvinyl Alcohol(PVA) and Vinyl Acetate–ethylene Copolymer Emulsion(VAE) with strong recognition and excellent plant facilities of international standards.

VAE (ethylene-vinyl acetate copolymer) emulsion viscosity is an important quality indicator and has a significant impact on product mass transfer, heat transfer, fluid flow, emulsion stability and emulsion transportation. Monomer ratio, polymerization temperature, initiator, emulsifier system optimization, electrolyte additives, and storage conditions are all factors that affect the viscosity of VAE emulsion.   1. Monomer ratio The selection and proportion of monomers directly affect the viscosity and other properties of VAE emulsion. The ratio of ethylene to vinyl acetate (VAc) is particularly critical. Generally speaking, VAE emulsions with a VAc content of 70% to 95% have higher viscosity. Increased VAc content will increase the flexibility and elasticity of the emulsion, and will also increase the viscosity of the emulsion.   2.Polymerization temperature control Polymerization temperature is another important factor affecting the viscosity of VAE emulsion. Changes in temperature will affect the rate of free radical generation and the rate of polymerization. Generally speaking, within a suitable temperature range, an increase in temperature will speed up the polymerization reaction, causing the latex particles in the emulsion to grow rapidly, resulting in an increase in viscosity. However, too high a temperature may cause the emulsion to gel, affecting its quality and stability.   3.Initiator The amount and type of initiator have a significant impact on the viscosity of VAE emulsions. Initiators mainly affect the rate of polymerization. When the amount of initiator is large, the polymerization reaction is fast, the number of generated latex particles increases, and the viscosity of the emulsion increases. However, excessive initiator may cause the reaction to be too fast and difficult to control, resulting in reduced emulsion performance. Different types of initiators generate different types of free radicals during the reaction and have different effects on the viscosity of the emulsion.   4. Emulsifier system optimization The selection and dosage of emulsifier are crucial to the stability and viscosity of VAE emulsion. The main function of emulsifier is to reduce the surface tension of emulsion and promote monomer dispersion and emulsion formation. Appropriate emulsifier concentration and anionic/nonionic emulsifier ratio can improve the stability of the emulsion and also affect the viscosity of the emulsion. The degree of polymerization and alcoholysis of protective colloids such as PVA (polyvinyl alcohol) also significantly affect the viscosity of the emulsion. The higher the degree of polymerization of PVA, the greater the viscosity of the emulsion; the higher the degree of alcoholysis, the lower the viscosity of the emulsion.   5.Electrolyte additives The addition of electrolyte additives can affect the viscosity and stability of VAE emulsions. Some electrolyte additives can compress the electric double layer of latex particles and reduce the electrostatic repulsion between latex particles, thereby increasing the viscosity of the emulsion. However, excessive amounts of electrolyte additives may cause aggregation in the emulsion, affecting its performance.   The factors that affect the viscosity of VAE emulsions include reaction time and rate, PH value, storage conditions and stability. In actual production and application, these factors need to be reasonably adjusted according to specific needs and conditions to obtain VAE emulsion products with excellent performance.   Website: www.elephchem.com Whatsapp: (+)86 13851435272 E-mail: admin@elephchem.com ElephChem Holding Limited, professional market expert in Polyvinyl Alcohol(PVA) and Vinyl Acetate–ethylene Copolymer Emulsion(VAE) with strong recognition and excellent plant facilities of international standards.

A variety of adhesives with different functions and uses can be prepared from VAE emulsion and its modified emulsions. Such as PVC film adhesive, interior decoration glue, plywood glue, floor glue, wallpaper glue, wood glue, paper-plastic composite glue, PVC plastic door special glue, difficult plastic bottle label glue, carpet back glue, cigarette glue, external wall insulation board glue, non-woven adhesive, aluminum foil glue, paper tube glue, binding glue, flock glue, leather glue, paulowood glue, roof waterproof glue. Here are some typical varieties.   1. PVC film adhesive: 50 parts VAE emulsion (CW40-707), 25 parts terpene resin aqueous dispersion (TSR-5112TP), 20 parts water and 5 parts ethyl acetate. After mixing evenly, the PVC film adhesive is obtained, and the water resistance of the bonded PVC film is better than that of the acrylic emulsion adhesive.   2. Special adhesive for PVC plastic and steel skin: Mixed with VAE emulsion 40-50 parts, rosin or rosin ester emulsion 20-25 parts, DOP 1 part, toluene 3 parts to 5 parts, defoam-0.3 parts to 0.5 parts, PVC plastic and steel skin special adhesive can be prepared for the bonding of PVC plastic and steel skin with plywood or wood-based board.   3. Building decoration glue: Add a small amount of DBP, inorganic fillers (such as paste precipitated barium sulfate, etc.) and auxiliaries to VAE emulsion to produce environmentally friendly white latex. An appropriate amount of VAE emulsion can also be added to polyvinyl acetate emulsion to obtain white latex such as HL-005 white latex with faster curing, less brittleness and better water resistance.   4. Adhesive for cigarette machine: the reference formula is 55 parts VAE emulsion (CW-707), 30 parts modified monomer, mixed soap-free emulsifier 1.0 parts, DBP5 parts, additives (castor oil), butyl phosphate, ethylene glycol, defoamer (n-octanol) small amount. It is used as an adhesive for lap, joint, molding and packaging of high speed cigarette machine.   5. Plywood adhesive: It is composed of VAE emulsion, DBP, ultra-fine calcined kaolin, fumed white carbon black, etc., adding 10-15 parts of MDI before use, and mixing evenly for bonding solid wood plywood.   6. Paulownia adhesive: The general adhesive used in the joint of paulownia jointing is easy to be red, yellow and black, especially in the rainy and humid hot season. The reason for the color development of paulownia joint may be that the paulownia itself contains a color substance, when the moisture content of the bonding place is higher, the color substance migrates to the joint, resulting in color development phenomenon, resulting in unqualified product quality. Using imported VAE emulsion, polyvinyl formaldehyde adhesive liquid, dibutyl phthalate, nano-calcium carbonate, precipitated barium sulfate and other adhesive, no red cracks were found.   7. Adhesive for building exterior wall insulation board: 100 parts VAE emulsion (CW-705LH), 40 parts quartz powder, 60 parts precipitated barium sulfate, 20 parts ultrafine calcinated kaolin, mixed into paste, adding cement and appropriate amount of water before use to adjust the viscosity required. Adhesive polystyrene foam (EPS) board and concrete, strong and durable.   Website: www.elephchem.com Whatsapp: (+)86 13851435272 E-mail: admin@elephchem.com ElephChem Holding Limited, professional market expert in Polyvinyl Alcohol(PVA) and Vinyl Acetate–ethylene Copolymer Emulsion(VAE) with strong recognition and excellent plant facilities of international standards.

Dispersion polymerization is another kind of heterogeneous free radical polymerization of alene monomers except suspension polymerization and emulsion polymerization. Dispersion polymerization can be regarded as a polymerization between suspension polymerization and emulsion polymerization, and its characteristics are as follows: 1) Water or non-water solvent can be used as the medium. When water is used as a medium, the monomer must be insoluble in water or substantially insoluble in water.2) The dispersion of monomers in water is achieved by intense agitation, and the protective colloid added to the system plays a role in preventing the agglomeration of dispersed phases.3) Water-soluble initiators are required for dispersion polymerization with water as the medium.   In form, dispersion polymerization has many similarities with emulsion polymerization. But there are clear differences. Dispersion polymerization, for example, does not use typical emulsifiers but uses protective colloid to stabilize the polymerization system; The particles obtained by polymerization are larger than those obtained by emulsion polymerization. Let's wait.The polymerization of vinyl acetate in water with polyvinyl alcohol as a protective colloid is a typical dispersion polymerization. Vinyl acetate is a water-soluble monomer with a solubility of about 2.5% in water at room temperature and is easily hydrolyzed. The hydrolysis product acetic acid can seriously interfere with the normal process of polymerization. Therefore, the dispersion polymerization of vinyl acetate has more complicated factors than the common emulsion polymerization. It is believed that the dispersion polymerization of vinyl acetate does not occur in micelles, but the monomer dissolved in water is first polymerized, and when the molecular weight reaches a certain level, the polymer precipitates from the water to form latex particles on the protective colloid. In order to improve the stability of the polymerization system and products, an appropriate amount of emulsifier is added in the dispersion polymerization of vinyl acetate, but the role of emulsifier in polymerization is auxiliary.   Attentions： PVA usually has two specifications of 1788 and 1799 (17 indicates a degree of polymerization of 1700, 88 and 99 indicate an alcoholysis degree of 88% and 99%, respectively). When used as a dispersion polymerization protective colloid, it is best to use 1788, and the resulting product has good stability.2. In the polymerization process, the monomer droplet acceleration should be slow and not fast. Generally, a slight reflux in the condenser is appropriate.3. The boiling point of vinyl acetate is between 70-75℃. After adding drops, the heating rate should be slow, too fast and easy to caking.   Website: www.elephchem.com Whatsapp: (+)86 13851435272 E-mail: admin@elephchem.com   ElephChem Holding Limited, professional market expert in Polyvinyl Alcohol(PVA) and Vinyl Acetate–ethylene Copolymer Emulsion(VAE) with strong recognition and excellent plant facilities of international standards.