Coating process
US6582754B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 27, 2000 |
| Grant date | Jun 24, 2003 |
| Priority date | — |
| Expiry date | Oct 27, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B1/043
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
The invention relates to a process for coating a material surface, comprising the steps of:(a) covalently binding a compound comprising an ethylenically unsaturated double bond to the material surface;(b) polymerizing a monomer comprising a reactive or crosslinkable group on the surface and thereby providing a primary polymer coating comprising reactive or crosslinkable groups,(c) in case of a monomer comprising a reactive group in step (b) reacting the reactive groups of the primary coating with a further compound comprising an ethylenically unsaturated double bond and graft-polymerizing a hydrophilic monomer and optionally a co-monomer having a crosslinkable group onto the primary coating obtained according to step (b) and(d) in case of crosslinkable groups being present in step (b) or (c) initiating crosslinking of said groups. The coated articles that are obtainable by the process of the invention have desirable characteristics regarding adherence to the substrate, durability, hydrophilicity, wettability, biocompatibility and permeability and are thus useful for the manufacture of biomedical articles such as ophthalmic devices.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.