| 摘要 |
1,163,750. Stabilized vinyl halide resin compositions. TENNECO CHEMICALS Inc. 25 Aug., 1966 [26 Aug., 1965], No. 17101/69. Divided out of 1,161,766. Heading C3P. A vinyl halide resin (e.g. polyvinyl chloride, bromide or fluoride or a copolymer from vinyl halide and vinyl acetate or propionate, vinylidene chloride, styrene, methyl methacrylate, or a dialkyl fumarate or maleate) composition containing a metal silicate filler of which the average particle size is from 0.5 to 50 microns (e.g. magnesium, calcium, aluminium, iron, magnesiumcalcium, or magnesium-aluminium silicate, talc, clay, or wollastonite) is heat-stabilized with a polyhydric alcohol (e.g. ethylene or neopentyl alcohol, trimethylolpropane, hexanetriol, methyl glucoside, pentaerythritol, dipentaerythritol, tripentaerythritol, sorbitol, mannitol, 1,4-dimethylolbenzene, dimethyloltoluene, or hydroxyethylcellulose). The nitrogen-containing heat-stabilizers of Specification 1,161,766 may be used in addition. Plasticizers such as dioctyl or butyl benzyl phthalate or tricresyl or cresyl diphenyl phosphate; fillers and pigments such as calcium or barium sulphate or carbonate silica, titanium dioxide, iron oxide, or lead chromate; other heat and light stabilizers; extenders; solvents; binders; or dyes may be incorporated. A translucent composition comprises the resin; magnesium, calcium, aluminium, iron, magnesium-calcium or magnesium-aluminium silicate; and pentaerythritol. In an example, a composition is formed from vinyl chloride-vinyl acetate copolymer, talc, cresyl diphenyl phosphate, pentaerythritol and finely-divided metal silicate. |
