Macromer forming catalysts
US7429623B2 · kind B2 · utility
24Cited by
48References
36Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 14, 2005 |
| Grant date | Sep 30, 2008 |
| Priority date | — |
| Expiry date | Jul 14, 2025 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F290/046
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The invention is the method of preparing macromer for use in making ophthalmic lenses comprising combining two or more monomers and using a macromer-forming catalyst, wherein the macromer-forming catalyst comprises triethylamine or bismuth.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.