Stabilization of vinyl halide polymers
US6919392B1 · kind B1 · utility
6Cited by
91References
34Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 20, 1992 |
| Grant date | Jul 19, 2005 |
| Priority date | — |
| Expiry date | Apr 20, 2012 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K5/37
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The heat and light stability imparted to vinyl halide polymers by metal compounds conventionally employed for this purpose is considerably improved by the presence of a mercapto ester such as 2-mercaptoethyl stearate. The esters can replace a substantial portion of the metal compound with no significant reduction in stability.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.