Polysiloxane with polycyclic modifier composition and biomedical devices
US4355147A · kind A · utility
180Cited by
7References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 26, 1981 |
| Grant date | Oct 19, 1982 |
| Priority date | — |
| Expiry date | Feb 26, 2001 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S128/21
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Monomeric polysiloxanes endcapped with activated unsaturated groups are copolymerized with polycyclic modulus modifiers and tear film stabilizers to form hard, gas permeable, polysiloxane contact lenses and other biomedical devices.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.