Polyester resin composition and fiber
US6680353B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 25, 2001 |
| Grant date | Jan 20, 2004 |
| Priority date | — |
| Expiry date | Apr 25, 2021 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD01F1/10
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A polyester resin composition containing, as a resin component, a polyester with its main component formed from a polytrimethylene terephthalate and having an intrinsic viscosity of 0.4 to 2, which satisfies the following conditions (1) to (3):(1) the polyester resin composition is composed of a polyester resin component comprising 90% by weight or more of a polytrimethylene terephthalate;(2) the polyester resin composition contains 0.01 to 3% by weight of titanium oxide having an average particle size from 0.01 to 2 &mgr;m; and(3) the polyester resin composition contains 25 or less/mg of the resin of agglomerates of titanium oxide particles which agglomerates have a lengthwise size exceeding 5 &mgr;m.A polytrimethylene terephthalate-based polyester fiber, having a low frictional coefficient, excellent in wear resistance, and showing a suitable luster and a delustered effect, can be stably spun and drawn by applying a melt spinning method to the polyester resin composition. In addition, the resin composition is prepared by forming a 1,3-propanediol ester of terephthalic acid and/or its oligomer in the presence of a fine dispersion of titanium oxide in which the dispersion the agglo…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.