Method of applying a hydrophilic coating to a polymeric substrate and articles prepared thereby
US4589873A · kind A · utility
133Cited by
14References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 29, 1984 |
| Grant date | May 20, 1986 |
| Priority date | — |
| Expiry date | May 29, 2004 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31667
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A method to impart increased lubricity to the surface of a polymeric substrate includes contacting the substrate with a solution of a hydrophilic polymer in a solvent and heating the substrate to evaporate the solvent. The substrate retains a coating of the hydrophilic polymer, which, when dry, has about the same lubricity as the uncoated substrate. When wet, the coating becomes significantly more lubricious than when dry. The invention includes articles which have a lubricious surface when wet prepared by the method of the invention.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.