Cyclic tri(phenylene disulfide) polymers and the production thereof
US4069205A · kind A · utility
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22Claims
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Key dates
| Filing date | Sep 9, 1976 |
| Grant date | Jan 17, 1978 |
| Priority date | — |
| Expiry date | Sep 9, 1996 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G61/127
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A tri(phenylene disulfide) polymer composed of para- or meta-tri(phenylene disulfide) units and units selected from the group consisting of diphenyl ether, bis(phenoxybenzenesulfonyl)benzene and bis(phenoxybenzenesulfonyl)diphenyl ether, is linked together with bivalent radicals selected from the group consisting of isophthaloyl and terephthaloyl radicals. In another embodiment, the tri(phenylene disulfide) can be substituted with biphenylene-2,2'-disulfide.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.