Mixed 2,2,6,6-tetramethyl piperidinyl carboxylic acid ester and amide light stabilizers and stabilized synthetic polymers
US4619958A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 30, 1983 |
| Grant date | Oct 28, 1986 |
| Priority date | — |
| Expiry date | Sep 30, 2003 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K5/3435
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Mixed light stabilizers for synthetic polymers are provided having the formula ##STR1## wherein: R is a polyvalent group selected from the group consisting of aliphatic hydrocarbon groups having from one to about twenty carbon atoms, cycloaliphatic hydrocarbon groups having from three to about sixteen carbon atoms and aromatic hydrocarbon groups having from six to about thirty carbon atoms; such groups substituted with from one to about six groups selected from the group consisting of hydroxy, acyloxy, and halogen; and N(C.sub.n.sbsb.1 H.sub.2n.sbsb.1).sbsb.3 where n.sub.1 is a number from one to five; PA0 R.sub.1 is selected from the group consisting of hydrogen, oxyl, alkyl, epoxy alkyl and hydroxy alkyl having from one to about twelve carbon atoms, alkyl aryl having from six to about eighteen carbon atoms, and acyl having from two to about twelve carbon atoms; PA0 R.sub.2 is selected from the group consisting of alkyl and alkenyl having from eight to about thirty carbon atoms; PA0 R.sub.3 is lower alkyl having from one to about six carbon atoms; PA0 X is >CH-- or ##STR2## Y is ##STR3## where R.sub.4 is hydrogen or R.sub.2 ; m is a number from 0 to 6; and PA0 n is a number from 3…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.