Fast crystallizing block copolyester composition
US4322335A · kind A · utility
32Cited by
4References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 8, 1980 |
| Grant date | Mar 30, 1982 |
| Priority date | — |
| Expiry date | Sep 8, 2000 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L67/025
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A fast crystallizing polyester composition comprising a block copolyester containing the repeating polymeric segments A and B wherein A is a polymeric segment of ethylene terephthalate units and B is a polymeric segment having a glass-transition temperature of less than 0.degree. C. and preferably less than -20.degree. C., the concentration of the segments of B being between 0.05 and 10 mole % of the block copolyester, and a crystallization nucleant which is an at least partially neutralized salt, preferably an alkali metal salt, of a polymer containing pendant neutralizable groups.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.