Patent · US Active

Prepolymers with dangling polysiloxane-containing polymer chains

US8263679B2 · kind B2 · utility

12Cited by

80References

9Claims

0Family size

Assignee

Novartis AG · CH

Inventors

Jian Zhou · Chongqing, CN
Dawn A. Smith · Rotorua, NZ

Key dates

Filing date	Oct 28, 2011
Grant date	Sep 11, 2012
Priority date	—
Expiry date	Oct 28, 2031

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08G77/70
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

The invention provide a new class of silicone-containing prepolymers containing dangling polysiloxane-containing polymer chains. This class of silicone-containing prepolymer is capable of being actinically crosslinked to form a silicone hydrogel material with a relatively high oxygen permeability, a reduced elastic modulus, and a relatively high ion permeability. The present invention is also related to silicone hydrogel contact lenses made from this class of silicone-containing prepolymers and to methods for making the silicone hydrogel contact lenses.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.