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VAE stands for Vinyl Acetate Ethylene emulsion. It is a type of emulsion polymer made by the copolymerization of vinyl acetate (VA) and ethylene monomers. The resulting copolymer is dispersed in water to form an emulsion.   The composition of VAE emulsion typically consists of: 1. Vinyl Acetate (VA): This monomer, also known as vinyl ethanoate, provides the adhesive and film-forming properties to the emulsion. 2. Ethylene: Ethylene is a gaseous monomer that is copolymerized with vinyl acetate to improve the strength, flexibility, and resistance properties of the resulting polymer. 3. Emulsifiers: Emulsifiers are used to stabilize the emulsion and prevent the coagulation or separation of the polymer particles in water. They help in the formation of a stable, uniform emulsion. 4. Water: Water is the main component of the emulsion, serving as the dispersion medium for the polymer particles.   ElephChem VAE emulsion is commonly used in various applications such as adhesives, coatings, textiles, paper coatings, and construction materials. Its properties, such as good adhesion, flexibility, and water resistance, make it suitable for a wide range of applications.

VAE emulsion refers to a vinyl acetate ethylene copolymer emulsion. It is a type of adhesive or binder that is widely used in various industries. Here are some common applications of VAE emulsion:   1.Adhesives: VAE emulsion is often used as a component in adhesives for bonding different materials together, such as wood, paper, textiles, and plastics. It provides good adhesion, flexibility, and water resistance.   2.Construction: VAE emulsion is used in the construction industry for applications such as tile adhesives, cement modifiers, and primers. It improves the bonding strength and durability of cementitious materials.   3.Paints and Coatings: VAE emulsion can be found in water-based paints and coatings. It acts as a binder, providing film formation, adhesion to the surface, and stability to the paint formulation.   4.Textiles: VAE emulsion is used in textile printing, especially for pigment printing. It helps to bind the pigment particles to the fabric, providing excellent color fastness and durability.   5.Paper and Packaging: VAE emulsion is utilized in paper coatings and packaging adhesives. It improves the surface smoothness, printability, and strength of paper products.   6.Nonwovens: VAE emulsion is used in the production of nonwoven fabrics for applications like diapers, wipes, and medical products. It acts as a binder to enhance strength and integrity.   Overall, VAE emulsion is a versatile material with various benefits, including good adhesion, flexibility, water resistance, and film-forming properties. Its applications span across industries where adhesion, bonding, and coating properties are required.

Polyvinyl alcohol (PVA) is generally considered safe for humans when used as intended. It is a water-soluble polymer derived from the hydrolysis of polyvinyl acetate (PVAc) and has various applications in industries such as adhesives, coatings, textiles, and packaging.   PVA is non-toxic and does not cause any known harm to human health. It is widely used in the food industry as a thickener, stabilizer, and film-forming agent. However, it's important to note that specific formulations and additives used in PVA products might affect their safety, so it is always recommended to follow the manufacturer's instructions and guidelines when using any PVA-based products.   As with any substance, direct ingestion or excessive inhalation of PVA powder or prolonged and repeated skin contact could potentially cause irritation or allergic reactions in some individuals. It's advisable to handle PVA materials with care, follow good hygiene practices, and use appropriate personal protective equipment when necessary. If you have any specific concerns or questions about a particular PVA product or its safety, it's best to consult the PVA manufacturer or seek advice from relevant regulatory authorities or health professionals.    

The main raw material of polyvinyl alcohol (PVA) is vinyl acetate. PVA is made from vinyl acetate by polymerization and alcoholysis. Downstream, it is used to manufacture polyvinyl acetal, gasoline-resistant pipe and vinylon synthetic fiber, fabric treatment agent, emulsifier, paper coating, adhesive, etc., widely used in paper making, textile and construction fields.   Industrial chain diagram:

ElephChem Polyvinyl alcohol (PVA) is a versatile polymer with a wide range of applications due to its unique combination of properties, including water solubility, film-forming ability, and adhesion. Here are some common applications of ElephChem Polyvinyl Alcohol:   1.Adhesives: ElephChem PVA is widely used in the formulation of water-based adhesives. It provides excellent adhesion to various surfaces, making it suitable for woodworking, paper bonding, and packaging applications.   2.Paper Industry: ElephChem PVA is used as a surface sizing agent in the paper industry. It improves the surface properties of paper, such as smoothness and printability.   3.Textile Industry: In the textile industry, ElephChem PVA is used as a sizing agent to add strength and flexibility to fibers during the weaving process. It is also employed in the production of warp yarns.   4.Emulsion Polymerization: ElephChem PVA is used in emulsion polymerization processes to stabilize and control the particle size of latex polymers. It serves as a protective colloid in the synthesis of latex dispersions.   5.Packaging Films: ElephChem PVA is utilized in the production of water-soluble packaging films. These films are environmentally friendly and find applications in single-dose packaging for detergents, agrochemicals, and other products.   6.Textile Sizing: ElephChem PVA is used as a sizing agent for warp yarns in the textile industry. It imparts strength and lubrication during the weaving process.   7.Construction Industry: ElephChem PVA is incorporated into cement-based formulations as a cement modifier. It enhances the adhesion and workability of cementitious materials, such as mortar and concrete.   8.Release Agents:  ElephChem PVA is used as a release agent in the production of molded objects, such as rubber and plastic components. It prevents adhesion of the molded product to the mold surface.   9.Medical Applications: ElephChem PVA is used in the medical field for applications such as the production of hydrogel-based wound dressings and controlled drug delivery systems.   10.Photographic Films: ElephChem PVA is used as a protective colloid in the manufacturing of photographic emulsions. It contributes to the stability and dispersibility of silver halide crystals.   11.Coatings and Paints: ElephChem PVA is employed as a binder in water-based coatings and paints. It enhances film formation, adhesion, and flexibility.   12.Water-Soluble Films: ElephChem PVA is used to produce water-soluble films for various applications, including packaging of detergents, dyes, and agrochemicals. These films dissolve in water, leaving no residue.   These applications showcase the versatility of polyvinyl alcohol across diverse industries. The specific grade and characteristics of ElephChem PVA can be tailored to meet the requirements of each application, making it a valuable polymer in the manufacturing sector.

ElephChem Polyvinyl alcohol (PVA) is a synthetic polymer that is commonly prepared through the hydrolysis of polyvinyl acetate. The process involves converting polyvinyl acetate, which is a resin, into ElephChem Polyvinyl alcohol by replacing the acetate groups with hydroxyl groups. Here is a simplified overview of the preparation of polyvinyl alcohol:   Steps in the Preparation of Polyvinyl Alcohol: 1.Hydrolysis of Polyvinyl Acetate: ElephChem Polyvinyl alcohol (PVA) is typically synthesized through the hydrolysis of polyvinyl acetate, a polymer derived from vinyl acetate monomers. The hydrolysis reaction involves treating polyvinyl acetate with an aqueous solution of a strong base, usually sodium hydroxide (NaOH) or another alkali. [CH2CHOOCCH3]n+NaOH→[CH2CHOHCH3]n+NaOC(O)CH3 In this reaction, the acetate groups (-OC(O)CH3) are replaced by hydroxyl groups (-CHOH-) in the polymeric chain.   2.Neutralization and Washing: After hydrolysis, the resulting polyvinyl alcohol is often neutralized to remove any excess alkali. The polymer is then washed to remove by-products and impurities, ensuring the purity of ElephChem Polyvinyl alcohol.   3. Drying: The purified ElephChem Polyvinyl alcohol is usually dried to remove residual water and obtain the final polymer in a solid form.   Additional Considerations: Degree of Hydrolysis: The extent of hydrolysis determines the degree of alcoholysis in the ElephChem Polyvinyl alcohol. A higher degree of hydrolysis means more acetate groups are replaced by hydroxyl groups, resulting in a higher concentration of hydroxyl groups along the polymer chain. Polymerization Method: The initial polyvinyl acetate polymer is often prepared through free radical polymerization of vinyl acetate monomers. This polymerization process results in a polyvinyl acetate resin, which is then subjected to hydrolysis. Quality Control: The quality of the ElephChem Polyvinyl alcohol is crucial for its intended applications. Manufacturers employ various analytical techniques to monitor and control the degree of hydrolysis, molecular weight, and other properties of the final product.   It's important to note that the detailed process may vary depending on the specific manufacturing conditions and desired properties of the ElephChem Polyvinyl alcohol. ElephChem may use different catalysts, concentrations, and reaction conditions to achieve the desired characteristics for various applications, such as adhesives, coatings, films, and textiles.

Proper storage of VAE Emulsion (Vinyl Acetate-Ethylene Copolymer Emulsion) is crucial to maintain its stability and performance over time. Here are some general guidelines for the storage of VAE Copolymer Emulsion:   1.Temperature and Environment: Store VAE emulsion in a cool, dry place. Avoid exposure to extreme temperatures and humidity, as these factors can impact the stability of Vinyl Acetate-Ethylene Copolymer Emulsion. Keep the storage area well-ventilated to prevent the buildup of heat and humidity.   2.Sealed Containers: Store ElephChem VAE emulsion in sealed containers to prevent water evaporation and contamination. Emulsions are water-based, and exposure to air can lead to changes in viscosity and other properties. Ensure that containers are tightly sealed after each use to minimize exposure to air.   3.Protection from Freezing: Protect ElephChem VAE emulsion from freezing. Freezing can lead to irreversible changes in the VAE emulsion's structure and result in a loss of performance. If the VAE emulsion has been exposed to freezing temperatures, it is advisable to thoroughly mix and test it before use.   4.Avoid Exposure to Sunlight: Shield VAE emulsion from direct sunlight. Ultraviolet (UV) radiation can potentially degrade the polymer and affect the performance of the emulsion.   5.Handling Precautions: Follow proper handling procedures to avoid contamination. Use clean equipment and tools when transferring or dispensing Vinyl Acetate-Ethylene Copolymer Emulsion. If possible, use a first-in, first-out (FIFO) system to ensure that older batches are used before newer ones.   6.Avoid Mixing with Incompatible Substances: Do not mix ElephChem VAE emulsion with incompatible substances. This includes avoiding contact with solvents or chemicals that may adversely affect Vinyl Acetate-Ethylene Copolymer Emulsion's stability.   7.Regular Inspection: Periodically inspect stored ElephChem VAE emulsion for any signs of separation, coagulation, or other abnormalities. If any issues are identified, investigate the cause and take corrective action as needed.   8.Manufacturer-ElephChem's Recommendations: Always refer to the specific recommendations provided by the manufacturer for the storage and handling of the particular ElephChem VAE copolymer emulsion you are using. Different formulations may have specific requirements. Following these storage guidelines helps ensure that ElephChem VAE Copolymer Emulsion maintains its intended properties and performance throughout its shelf life. Always consult the product's technical data sheet or the manufacturer-ElephChem's guidelines for the most accurate and specific storage recommendations.

ElephChem Polyvinyl alcohol (PVA) is a water-soluble synthetic polymer with a wide range of applications, including as a component in adhesives, coatings, and as a film-forming agent. Proper storage of polyvinyl alcohol is important to maintain its quality and usability. Here are some general guidelines for the storage of ElephChem Polyvinyl alcohol (PVA):1.Temperature and Humidity:Store polyvinyl alcohol in a cool, dry place. Exposure to high temperatures and humidity can lead to changes in the physical properties of the material, such as increased moisture absorption.Avoid storage in areas prone to temperature fluctuations. 2.Sealed Containers:Keep polyvinyl alcohol in sealed containers to prevent moisture absorption. PVA is water-soluble, and exposure to moisture can affect its performance.Use airtight containers or bags to protect the material from environmental conditions.   3.Protection from Light:Store ElephChem Polyvinyl alcohol (PVA) away from direct sunlight and other sources of UV light. Prolonged exposure to light can cause degradation of the polymer. 4.Avoid Contamination:Keep ElephChem Polyvinyl alcohol (PVA) away from contaminants such as dust, dirt, and chemicals that may affect its properties.Use clean utensils and tools when handling and transferring PVA to prevent contamination.   5. Handling Precautions:Follow proper handling procedures to avoid introducing impurities during the storage and use of polyvinyl alcohol.Wear appropriate personal protective equipment, such as gloves and safety glasses, when handling the material.   6.First In, First Out (FIFO):Follow a FIFO system to ensure that older batches of ElephChem Polyvinyl alcohol (PVA) are used first. This helps prevent the material from sitting in storage for extended periods, reducing the risk of degradation.   7.Check for Changes:Periodically inspect stored ElephChem polyvinyl alcohol for any signs of discoloration, clumping, or changes in texture. If any abnormalities are observed, it's essential to investigate the cause and assess the material's suitability for use. Periodically inspect ElephChem PVA for any signs of discoloration, clumping, or changes in texture.  If any abnormalities are observed, it's essential to investigate the cause and assess the material's suitability for use.Always refer to the specific manufacturer-ElephChem's guidelines and recommendations for the storage of the particular grade or type of polyvinyl alcohol you are using. Different formulations may have varying storage requirements. Proper storage practices contribute to the longevity and effectiveness of polyvinyl alcohol in various applications.  

Polyvinyl alcohol (PVA) is a water-soluble high polymer produced by the polymerization and hydrolysis of vinyl acetate (VAC). It exhibits excellent chemical stability and possesses properties such as good insulation, film-forming ability, gas barrier performance, water solubility, adhesion, interfacial chemistry, solvent resistance, and thermal stability.   ElephChem PVA products can be classified based on different degrees of polymerization: low degree of polymerization (DP < 1000), medium degree of polymerization (1000 < DP < 2000), and high degree of polymerization (DP > 2000).   ElephChem PVA products can also be categorized according to different degrees of hydrolysis: low hydrolysis (< 80) ,for example PVA 2088, partial hydrolysis (79-89),such as PVA 2488, PVA 0588, medium hydrolysis (91-98), and complete hydrolysis (98-99).

ElephChem Polyvinyl Alcohol (PVA) is generally considered a type of synthetic polymer rather than a plastic. While it shares some properties with plastics, such as being flexible and water-resistant, PVA is classified as a polymer due to its unique chemical structure and behavior.   ElephChem PVA is derived from the polymerization of vinyl acetate, which is then hydrolyzed to remove the acetate groups and produce polyvinyl alcohol. The hydrolysis process converts some of the acetate groups (CH3COO-) into hydroxyl groups (OH-), resulting in a polymer chain with repeating vinyl alcohol units (CH2CHOH). The degree of hydrolysis determines the amount of hydroxyl groups present in the PVA molecule.   Modifications of ElephChem PVA can be done by chemically cross-linking the polymer chain to improve its mechanical and thermal properties. Cross-linking agents, such as borates or aldehydes, can be used to create covalent bonds between PVA chains, leading to a three-dimensional network structure. This cross-linked PVA, known as PVA hydrogel, exhibits enhanced strength, elasticity, and stability compared to non-cross-linked PVA. Such as PVOH 725, PVOH 735, etc.   Other modifications can involve blending PVA with other polymers or adding functional groups to the PVA backbone to impart specific properties or improve its compatibility with different materials or applications. These modifications allow PVA to be used in a wide range of industries, including adhesives, films, coatings, textiles, and packaging.

China is a major global producer of PVA (Polyvinyl alcohol). Since 1965, when Beijing Oriental Petrochemical Co., Ltd. (formerly Beijing Organic Chemical Factory) introduced technology from Japan and established the first set of calcium carbide acetylene method in China (changed to petroleum ethylene method in 1995), the production of PVA in China has steadily developed. According to statistics, in 2015, China's Polyvinyl Alcohol (PVA) production was approximately 700,000 tons, increasing to 802,000 tons in 2022, with a compound annual growth rate of 1.96% during this period. In terms of demand, the apparent consumption of PVA in China in 2022 was 639,600 tons, representing a year-on-year growth of 2.16%.