Modified polytrimethylene terephthalate
US6645619B2 · kind B2 · utility
4Cited by
6References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 12, 2002 |
| Grant date | Nov 11, 2003 |
| Priority date | — |
| Expiry date | Jun 12, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2913
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention provides poly(trimethylene terephthalate) copolymerized with ester-forming sulfonate and a fiber thereof. The polymer of the present invention is high in melting point, small in loss of melting viscosity and has a high molecular weight. The fiber of the present invention is high in toughness, excellent in whiteness and dyeable with a cationic dye, whereby it is useful for clothing, carpets or non-woven sheets, etc.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.