Method of hydrophilic coating of plastics
US4801475A · kind A · utility
61Cited by
41References
4Claims
0Family size
Inventors
Key dates
| Filing date | Aug 23, 1984 |
| Grant date | Jan 31, 1989 |
| Priority date | — |
| Expiry date | Aug 23, 2004 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2475/00
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Plastics, particularly a method 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 soluble aliphatic polyisocyanate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.