Phosphite stabilized polyvinyl chloride containing resins
US3933733A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | May 9, 1974 |
| Grant date | Jan 20, 1976 |
| Priority date | — |
| Expiry date | May 9, 1994 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S260/16
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Halogen-containing resins, particularly polyvinyl chloride, are stabilized by the incorporation of a phosphite of the formula, ##EQU1## wherein one or two of groups R.sub.1, R.sub.2 or R.sub.3 has the formula, R(OC.sub.n H.sub.2n).sub.m --, in which R is an alkyl unsubstituted or substituted with at least one hydroxyl or chlorine, an alkenyl unsubstituted or substituted with at least one hydroxyl or chlorine, or an aralkyl, n has a value of from 1 to 4, and m has a value of from 1 to 8, and the remaining group R.sub.1, R.sub.2 and/or R.sub.3 is an alkyl unsubstituted or substituted with at least one hydroxyl or chlorine, an alkenyl unsubstituted or substituted with at least one hydroxyl or chlorine, an aralkyl or an unsubstituted aryl.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.