AGENTS FOR THE STABILIZATION OF SYNTHETIC RESINS

摘要

1465492 Stabilizers for halogen-containing polymers ALBRIGHT & WILSON Ltd 22 April 1974 [19 Feb 1973] 7984/73 Heading C3P [Also in Division C2] Halogen-containing polymers, particularly polyvinyl chloride, are stabilized by means of a composition comprising (a) an ester of formula wherein each of x and y, which are the same or different, is an integer of 1-6, each of R 4 and R 9 , which are the same or different, is C 1-21 alkyl, C 2-21 alkenyl, cycloalkyl group, aromatic hydrocarbyl, aralkyl hydrocarbyl or aralkenyl hydrocarbyl or an inertly substituted derivative of any of the latter three groups, each of R 3 and R 5 , which are the same or different, is as defined above for R 4 and R 9 , or is hydrogen or R 3 and R 5 , together with the carbon atom to which they are attached, form a cycloalkyl ring, and (b) an organotin compound of formula wherein R 1 represents C 1-12 alkyl, cycloalkyl, aromatic hydrocarbyl, R 14 is as defined for R 1 or each of R 14 , R 15 and R 16 , which are the same or different, is of formula -OOCR 4 , -SC x H 2x COOR 9 or -SR 4 , or R 15 and R 16 together represent -S-, -OOCR 17 COO-, or R 15 and R 16 together represent -S- and R 14 represents -SH, and R 17 represents an alkylene, alkenylene, cycloalkylene or arylene group.