HYDROLYSIS-RESISTANT SILICONE COMPOUNDS

摘要

In one aspect, the invention relates to hydrolysis-resistant silicone compounds. In particular, disclosed are sterically hindered hydrolysis-resistant silicone compounds and improved purity hydrolysis-resistant silicone compounds. Also disclosed are processes for making hydrolysis-resistant silicone compounds; the products of the disclosed processes; compositions and polymers comprising the disclosed compounds and products of the disclosed processes; and ophthalmic lenses, for example contact lenses, intraocular lenses, artificial cornea, and spectacle lenses, comprising the disclosed compositions, disclosed polymers, disclosed compounds, and products of the disclosed processes. This abstract is intended as a scanning tool for purposes of searching in the particular art and is not intended to be limiting of the present invention.

主权项

1. A process for making a cyclic siloxane monomer comprising the step of reacting a dihalosilyl compound having the structure: wherein M represents a radical-polymerizable group; wherein L represents an optionally substituted divalent C1-C20 organic group; and wherein R1 represents an optionally substituted C1-C20 alkyl group or optionally substituted C6-C20 aryl group, with a siloxanyl diol compound having the structure: wherein p is 1, 2, or 3; and wherein R2a, R2b, R3a, R3b, R4a, and R4b independently represent optionally substituted C1-C20 alkyl groups or optionally substituted C6-C20 aryl groups.