| 摘要 |
Vinyl chloride polymers are plasticized with halogenation products of triglycerides of saturated or unsaturated fatty acids containing 8-20 carbon atoms in the molecule. The plasticizers preferably contain 2 to 6 chlorine atoms per fatty acid residue and may be derived from mixtures of triglycerides, e.g. natural fats. Examples describe the use of chlorinated coconut oil. The polymers may be polyvinyl chloride or copolymers of vinyl chloride with vinyl acetate, vinyl acetals and vinylidene chloride. The compositions may also comprise conventional plasticizers such as phthalic and adipic acid esters and polyesters, e.g. dioctyl phthalate, and stabilizers, e.g. epoxidized unsaturated fatty acid esters, and may be formed into foils, sheets, plates, blocks and cable coverings. |
