Polycarbonate resins and processes for producing the same
US9382378B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 8, 2014 |
| Grant date | Jul 5, 2016 |
| Priority date | — |
| Expiry date | Jan 8, 2034 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P20/582
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The invention is to provide polycarbonate resins having excellent light resistance, transparency, hue, heat resistance, thermal stability, and mechanical strength and to provide processes for efficiently and stably producing a polycarbonate resin which stably shows those performances. The invention includes: polycarbonate resins which at least contain structural units derived from a dihydroxy compound having the portion represented by formula (1) as part of the structure thereof and which have specific properties; and processes for producing the polycarbonate resins,CH2—O (1)where the case where the portion represented by formula (1) is part of —CH2—O—H is excluded.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.