Solution for treating contact lens
US9925293B2 · kind B2 · utility
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9Claims
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Key dates
| Filing date | Sep 5, 2016 |
| Grant date | Mar 27, 2018 |
| Priority date | — |
| Expiry date | Sep 5, 2036 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC11D7/10
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A solution for treating contact lens is provided. The solution includes about 0.01-1.0 parts by weight (pbw) of a polymer having phosphorylcholine groups, about 0.01-1 pbw of an inorganic salt, and about 100 pbw of water. The polymer has a number-average molecular weight of about 4,000 to about 1,000,000 daltons and has a structure of formula (I):wherein, in formula (I), m is a positive integer, n is zero or a positive integer, and R is C2-C12 alkyl group or C2-C12 hydroxyalkyl group. When n is a positive integer, m/n is greater than 1.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.