High glass transition temperature, ductile, and processable thermoplastic containing conformable ring segments
US6203922A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 20, 2000 |
| Grant date | Mar 20, 2001 |
| Priority date | — |
| Expiry date | Mar 20, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31786
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention pertains to novel synthetic polymers which contain bulky carboxylic monomer units which contain minimally two aryl rings linked by one or more linking groups such that rotation of the aryl rings relative to each other is structurally prohibited, thus being a rigid bulky monomer unit, or sterically disfavored, thus being a rotationally hindered bulky monomer, and which contain at least one flexibilizing monomer which contains a six- to twelve-membered, conformable carboxylic structure. The bulky and flexible monomer units are linked by suitable linking groups to form polymers which exhibit high T.sub.g but which exhibit ductile behavior. The polymers have optical properties suitable for use as optical disks and other optical elements.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.