Poly(tetramethylene terephthalate)-polyether block
US4116925A · kind A · utility
10Cited by
11References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 14, 1976 |
| Grant date | Sep 26, 1978 |
| Priority date | — |
| Expiry date | Jun 14, 1996 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G63/672
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Poly(tetramethylene terephthalate)-polyether block copolymers having materially increased heat deflection temperatures and incorporating within the polymer chain in random distribution 1 percent to 7 percent by weight of the polyether, poly(tetramethylene ether glycol) or polyethylene oxide; the polyether being added to the reaction mixture in the course of the polymerization reaction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.