Novel organotin stabilizer compositions and polyvinyl resins stabilized therewith
US4134878A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 15, 1976 |
| Grant date | Jan 16, 1979 |
| Priority date | — |
| Expiry date | Nov 15, 1996 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K5/57
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A stabilizer composition for polyvinyl polymers contains PA1 (a) an organotin compound having the formula: ##STR1## WHEREIN M + N = 4 AND M IS EITHER 1 OR 2, R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are each independently a hydrogen atom, or an alkyl or substituted alkyl group having 1 to 18 carbon atoms with the proviso that at least one of R.sup.1 and R.sup.2 contains adjacent to the group HC-- a carbonyl group which forms a part of an acid group, ester group, acid halide group, ketone group or aldehyde group; X is a --S (CH.sub.2).sub.y --COOR.sup.5 or --S (CH.sub.2).sub.y --OCOR.sup.5 wherein y is 1 or 2, or a --SR.sup.5, --OCOR.sup.5 or --OCOCH.dbd.CHCOOR.sup.5, R.sup.5 having 1 to 18 carbon atoms; and PA1 (b) an organotin sulfide having the formula (R Sn S.sub.1.5).sub.n or R.sub.2 Sn S, wherein n is 2 to 10 and R is an alkyl group having 1 to 18 carbon atoms or the group: ##STR2## wherein R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are as above defined under (a).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.