vinyl pyrrolidone/ vinyl acetate copolymers ¢ binder ¢ film former ¢ seed coatings this brochure is divided into two main segments General properties and uses 2-6 Agricultural case studies 6-7 These case studies highlight the use of Agrimer ™ VA as an excellent material for seed coatings amongst other applications general properties and uses
Vinyl polymers are a group of polymers derived from vinyl monomers of the type CH 2 =CHR. Their backbone is an extended alkane chain .-CH 2-CHR-CH 2-CHR-..). In popular usage, "vinyl" refers only to polyvinyl chloride (PVC).. Examples. Vinyl polymers are the most common type of plastic.
A copolymer is PVC resin that has been blended with a non-vinyl chloride monomer. Most common copolymers contain between 3 and 7% vinyl acetate. Copolymers are used in applications requiring low-fusion temperature or improved adhesion. High-molecular weight resins are used in applications requiring high physical properties.
EVOH Films Properties. Ethylene-vinyl alcohol copolymer or EVOH is a flexible, crystal clear, and glossy thermoplastic copolymer with excellent flex-crack resistance, and very high resistance to hydrocarbons, oils and organic solvents. It also has some of the best barrier properties to gases such as oxygen, nitrogen, and carbon dioxide making .
vinyl copolymer film,
Ethylene Vinyl Acetate (EVA) Copolymer Safety Data Sheet International Polymers Company SAFETY DATA SHEET according to Regulation (EC) No. 1272/2008, Regulation (EC) 907/2006 Ethylene vinyl acetate copolymer, rev.1 01/2013 Page 2
Ethylene-vinyl acetate (EVA), also known as poly (ethylene-vinyl acetate) (PEVA), is the copolymer of ethylene and vinyl acetate.The weight percent vinyl acetate usually varies from 10 to 40%, with the remainder being ethylene. Broadly speaking, there are three different types of EVA copolymer, which differ in the vinyl acetate (VA) content and the way the materials are used.
A copolymer is a polymer derived from more than one species of monomer. The polymerization of monomers into copolymers is called copolymerization. Copolymers obtained by copolymerization of two monomer species are sometimes called bipolymers. Those obtained from three and four monomers are called terpolymers and quaterpolymers, respectively.
Ethylene vinyl acetate (EVA) copolymers are used in extrusion film processes for applications including packaging, surface protection and greenhouse covers, and in photovoltaic cell encapsulation. EVA copolymers are used in molded caps and seals, footwear and car interiors.
Films cast from solutions are glossy, translucent and rewettable by water. The PVP/VA W copolymers S PVP/VA W-735 copolymer is a 70/30 copolymer of PVP and vinyl acetate supplied as a 50% solution in water. PVP/VA W-635 copolymer is a 60/40 copolymer also supplied as a 50% aqueous solution.
EVA is short for " ethylene vinyl acetate ". Somehow "polyethylene" got added as a prefix to create the acronym PEVA. Both are words for the same copolymer. PEVA / EVA is a copolymer comprised of the monomers Ethylene C2H4 and Vinyl Acetate Monomer CH2=CHOOCCH3 conjoined to make the copolymer Ethylene Vinyl Acetate, or EVA for short.