Polycarbonate from 1,3-bis(4-hydroxyphenyl)-1,3-dialkylcyclohexanes
US5281688A · kind A · utility
2Cited by
2References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 11, 1992 |
| Grant date | Jan 25, 1994 |
| Priority date | — |
| Expiry date | Dec 11, 2012 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C39/17
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
1,3-Bis(4-hydroxyphenyl)-1,3-dialkylcyclohexanes, as illustrated by 1,3-bis(4-hydroxyphenyl)-1,3-dimethylcyclohexane, may be prepared by the reaction of phenol with a 1,5-dialkyl-1,4-cyclohexadiene under acidic conditions. Polycarbonates prepared therefrom have high glass transition temperatures and are expected to be ductile.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.