Process for producing continuously tapered polymers and copolymers and products produced thereby
US5241008A · kind A · utility
57Cited by
16References
21Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 3, 1991 |
| Grant date | Aug 31, 1993 |
| Priority date | — |
| Expiry date | Sep 3, 2011 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F236/10
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A process for preparing continuously tapered polymers and copolymers having a continuous change in microstructure along the polymer backbone is disclosed. The process produces polymers and copolymers with multiple glass transition temperatures of very small energy absorption, i.e. no definable glass transition temperature. The polymers have a flexible chain end and they progressively become stiffer along the length of the chain.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.