Method of providing a polyester article with a hydrophilic surface
US5130073A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 16, 1990 |
| Grant date | Jul 14, 1992 |
| Priority date | — |
| Expiry date | Jan 16, 2010 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2467/00
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A generally hydrophobic polyester article is provided with a generally hydrophilic surface by contacting said general hydrophobic polyester with a copolymeric material while said polyester is at a temperature above its melting point. The copolymeric composition comprises a generally hydrophobic moiety and a generally hydrophilic moiety. Also disclosed is a method for imparting the hydrophilic surface to a generally hydrophobic polyester which method comprises contacting a generally hydrophobic polyester with a copolymeric material while said generally hydrophobic polyester is at a temperature above its melting point. In one preferred embodiment the generally hydrophobic polyester is contacted with said copolymeric composition immediately after said polyester has been extruded and while said polyester is undergoing die swell.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.