Compositions based on poly - (vinyl chloride) stabilized by compounds laurylstanniques, application of these compositions and to stabilize the materials to be moulded

摘要

The invention relates to compositions based on a homopolymer of vinyl chloride, which are stabilized by organic compounds of tin. / p & & p & these novel compositions are formed of 20 to 80 a homopolymer of vinyl chloride and 80 to 20 of one or more copolymers, such as the copolymers polystyrenepolyethylenebutene, acrylatecaoutchouc, acrylatecaoutchoucstyrene, acrylonitrilestyreneacrylate, abs, nbr, nar, san and eva, and they contain, as a stabilizer, at least one compound of tin hydroxyacetals corresponding to one of the formulae: (n - ch) an sns (ch) — coor (n - ch) an sns (ch) coordans which n is equal to 1 or 2, while r and r represent each an alkyl, c - (c). / p & & p & these compositions resistent of a heat and they are particularly suitable for the manufacture of sheets and of hollow objects which may be used in the automobile industry.