Polyolefin article
US5258221A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 10, 1992 |
| Grant date | Nov 2, 1993 |
| Priority date | — |
| Expiry date | Aug 10, 2012 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T442/2918
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A generally hydrophobic polyolefin article is provided with a modified surface by contacting said generally hydrophobic polyolefin with a copolymeric material while said polyolefin is at a temperature above its glass transition temperature. The copolymeric composition includes a generally hydrophobic moiety and a modifying moiety. Also disclosed is a method for imparting the modified surface to a generally hydrophobic polyolefin which method involves contacting a generally hydrophobic polyolefin with a copolymeric material while said generally hydrophobic polyolefin is at a temperature above its glass transition temperature. In one preferred embodiment, the generally hydrophobic polyolefin is contacted with said copolymeric composition immediately after said polyolefin has been extruded and while said polyolefin is undergoing die swell.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.