Dihydropyridine derivatives as stabilizers for vinyl chloride polymers
US4317768A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 13, 1979 |
| Grant date | Mar 2, 1982 |
| Priority date | — |
| Expiry date | Nov 13, 1999 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K5/34
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The instant invention relates to compounds of the general formula: ##STR1## wherein R.sub.1 represents an alkyl, alkenyl, phenyl or phenylalkyl radical, R.sub.2 represents an alkyl, alkenyl or alkynyl radical, a .omega.-halogenoethyl radical, an optionally substituted benzyl radical, a phenylalkenyl radical, an optionally substituted phenyl radical, a radical of the formula R.sub.4 --O--(CH.sub.2).sub.n -- wherein n is 2, 3, or 4 and R.sub.4 represents an optionally substituted alkyl radical or a phenyl radical, R.sub.3 represents a hydrogen atom, an alkyl, alkenyl or phenyl radical. The compounds of formula I have been found to be useful as stabilizers for vinyl resins.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.