Method of hydrophilic coating of plastics
US4959074A · kind A · utility
68Cited by
1References
1Claims
0Family size
Inventors
Key dates
| Filing date | May 25, 1988 |
| Grant date | Sep 25, 1990 |
| Priority date | — |
| Expiry date | May 25, 2008 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S623/92
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Plastics, particularly a method of hydrophilic coating of plastics, for example, a contact lens, with a lubricating and visually acute mucopolysaccharide film which is immobilized upon the surface of the plastic for the lifetime of the plastic. A preferred method includes first coating the plastic with an aqueous solution of a mucopolysaccharide, drying by applying a water-miscible solvent, then crosslinking and permanently immobilizing the first coating upon the plastic by applying a solution of catalyzed organic solution aliphatic polyisocyanates.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.