Modified polyester fiber and process for preparation thereof
US4622381A · kind A · utility
10Cited by
10References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 2, 1985 |
| Grant date | Nov 11, 1986 |
| Priority date | — |
| Expiry date | Oct 2, 2005 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G63/688
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A fiber composed of a polyester having at least a part of terminals blocked with the residue of at least one specific metal sulfonate compound, where the amount of the blocked terminals is 1.3 to 4.0 mol % based on the dicarboxylic acid component of the polyester and the alkali dissolution speed constant is 3.3.times.10.sup.-9 to 6.5.times.10.sup.-9 cm/sec. This polyester has a good dyeability with a cationic dye and is excellent in the heat resistance and alkali resistance. The polyester fiber can be spun at a high speed or super high speed and can be false-twisted at a high temperature.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.