Combination of an organothio compound and a zinc mercapto ester as a heat stabilizer in PVC processing
US6462116B2 · kind B2 · utility
2Cited by
25References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 30, 2001 |
| Grant date | Oct 8, 2002 |
| Priority date | — |
| Expiry date | May 30, 2021 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K5/37
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The zinc bum experienced during the processing of a composition comprising a halogen-containing polymer and a zinc mercaptoester is eliminated by the addition of an organothio compound selected from dithioglycol, polyformals and polyacetals of said dithioglycol, and a mercaptoalkanol.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.