| 摘要 |
1,217,998. Improving the workability of PVC. PRODUITS CHIMIQUES PECHINEYSAINT-GOBAIN. 18 April, 1969 [19 April, 1968], No. 19994/69. Heading C3P. The workability of polyvinyl chloride is improved by incorporation of 2-50% by weight with respect to the total weight of the composition of an α-methylstyrene-styrene-acrylonitrile terpolymer, said terpolymer having more than 50% α-methylstyrene, containing no residual monomer and having a Vicat softening point greater than 105‹ C. Barium and cadmium laurate or ricinoleate may be added as stabilizers and lubricants. |
