Vinnol H 40/55 copolymer of vinyl chloride and vinyl acetate 9003-22-9 Wacker Polyvinyl chloride (PVC) Polyvinyl acetate emulsions & derivatives (PVAc…) >> PVAc homopolymers VINNOL® H 40/55 is a copolymer of vinyl chloride (VC) and vinyl acetate (VAc) with a high polymer content consisting from vinyl acetate. VINNOL® H 40/55 is a physically drying binder that forms a film when the solvent contained in the formulation has evaporated. Vinnol® H 40/55 is a physically drying binder that forms a film when the solvent contained in the formulation has evaporated. Like all VC copolymers, Vinnol® H 40/55 is characterized by excellent toughness, permanent flexibility, abrasion resistance, low swelling in the presence of water, and low gas permeability. Films of Vinnol® H 40/55 are highly resistant to water. They also show excellent resistance to oil, grease, dilute aqueous acids, alkalis and saline solutions. Aromatic hydrocarbons and chlorinated hydrocarbons cause them to swell to varying extents. Vinnol® H 40/55 is resistant to aliphatic hydrocarbons, such as white spirit, and to alcohols. We will be glad to supply further information on request. Ketones and esters are the preferred solvents for Vinnol ® H 40/55, although chlorinated hydrocarbons are also used. Ketones are particularly good solvents for vinyl chloride copolymers; Vinnol® H 40/55 dissolves rapidly, for instance, in acetone, methyl ethyl ketone, cyclohexanone and isophorone. Esters such as methyl, ethyl and butyl acetate are somewhat less efficient solvents than ketones. Chlorinated hydrocarbons such as methylene chloride and chloroform will dissolve Vinnol® H 40/55, whereas tri- and tetrachloroethene will only cause them to swell. Aromatic hydrocarbons have a strong swelling effect on Vinnol® H 40/55. They may be used to extend the solvents recommended above (no more than 4 parts aromatic hydrocarbons to 1 part solvent) for use with low-molecular-weight Vinnol® H 40/55. Alcohols and aliphatics are non-solvents for Vinnol® H 40/55. The vinyl acetate content of Vinnol® H 40/55 imparts film flexibility, which can be be further enhanced by adding plasticizers. The Vinnol grades of the H 40 range are compatible with a large number of plasticizers. These include: Phthalates Adipates Sebacates Citrates Epoxides Chlorinated paraffins Vinnol® H 40/55 can be combined with all other Vinnol ® surface coating resins. It is also compatible with a large number of combination resins. Always check the compatibility of Vinnol® H 40/55 with the polymer in question. Pigments and fillers Vinnol® H 40/55 is compatible with very many pigments and fillers. Since the copolymers are free of carboxyl groups, use can also be made of alkaline Please note that zinc and cadmium pigments (seldom used due to their physiological properties) catalyse the decomposition of VC copolymers at elevated temperatures. The same is true of iron oxide pigments. Stabilization Although Vinnol® H 40/55 shows intrinsic heat and UV resistance, it may be necessary to stabilize the Vinnol®-modified surface coating compound in some cases. Epoxy stabilizers usually provide adequate heat resistance. If enhanced stability is required, we recommend organo-tin compounds. A combination of epoxy stabilizers and organo-tin compounds produces synergistic effects. For outdoor applications, it is advisable to add light-resistant UV stabilizers. In this case, light resistant heat stabilizers, such as sulfur free tin stabilizers should be used. To avoid risk of discoloration, contact with iron should be avoided both during preparation of the solution and during subsequent storage of the product. Vinnol®- based surface coating compounds should be stored in coated containers. Copolymer of vinyl chloride and vinyl acetate with a high polymer content consisting from vinyl acetate. Offers good toughness, permanent flexibility, abrasion resistance, low swelling in the presence of water, low gas permeability. Provides high resistance to water, good resistance to oil, grease, dilute aqueous acids, alkalis and saline solutions.