Hydrophilic modifier monomers
US4921956A · kind A · utility
6Cited by
3References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 21, 1989 |
| Grant date | May 1, 1990 |
| Priority date | — |
| Expiry date | Jun 21, 2009 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F246/00
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Hydrophilic modifier monomers of the formula [X-T].sub.z' G are disclosed wherein X is a reactive group, G is a hydrophilic group and T is a divalent linking group, z' being a number up to the available valence of G, excess G valences being taken up by hydrogen. The monomers of the invention can be used to boost the hydrophilic nature of a wide variety of polymeric materials or be polymerized themselves with varying degrees of copolymerizable monomers. They are particularly suited for making hydrophilic contact lens materials.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.