Novel stabilized polymer compositions

US3933750A · kind A · utility

Assignee

• Albright & Wilson Limited · GB

Inventors

• Harold Coates · Burbank, US
• John D. Collins
• Iftikhar Hussain Siddiqui

Key dates

• Filing date: Jul 22, 1974
• Grant date: Jan 20, 1976
• Expiry date: Jul 22, 1994

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08K5/58
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Organothiotin compounds with low tin content suitable as stabilizers for halogen containing resins e.g. polyvinyl chloride, are of formula R.sub.1 R.sub.2 Sn(X) -- SC.sub.m H.sub.2m S -- (Y)SnR.sub.1 R.sub.2, where R.sub.1 and R.sub.2 are C.sub.1-20 alkyl, cycloalkyl or phenyl, m is 1-8, X and Y are of formula --OCOCH = CHCOOCH.sub.2 Q.sub.1, --S(CH.sub.2).sub.n COOCH.sub.2 Q.sub.1, or --OOC(CH.sub.2).sub.n S -- CH.sub.3 S(CH.sub.2).sub.n COOR.sub.5 SR.sub.4, OCOCH = CHCOOR.sub.5 or S(CH.sub.2).sub.2 COOR.sub.5, where Q.sub.1 is --C(Q.sub.2)(CH.sub.2 Z).sub.2, where Q.sub.2 is H, C.sub.1-6 alkyl or CH.sub.2 Z, Z is OOCR.sub.3 OOC(CH.sub.2).sub.n SR.sub.4, --OOCR.sub.6 COOR.sub.5 or a pair of Z is --OOC(CH.sub.2).sub.a S CHR.sub.3 S(CH.sub.2).sub.n COO--, R.sub.3 is C.sub.1-20 alkyl optionally substituted phenyl or alkylphenyl or if two R.sub.3 groups are present in the molecule, they may constitute a single bond between the carbon atoms immediately adjacent to said R.sub.3 radicals, C.sub.1-20 alkylene, C.sub.2-20 alkenylene or optionally substituted phenylene, R.sub.4 is C.sub.1-20 alkyl, optionally substituted C.sub.1-6 alkyl or two groups R.sub.4 are optionally substituted C.sub…