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Polymerizable polysiloxanes with hydrophilic substituents

  • US 10,227,435 B2
  • Filed: 12/13/2016
  • Issued: 03/12/2019
  • Est. Priority Date: 12/15/2015
  • Status: Active Grant
First Claim
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1. A hydrophilized polydiorganosiloxane vinylic crosslinker, comprising:

  • (1) a polydiorganosiloxane polymer chain comprising dimethylsiloxane units and hydrophilized siloxane unit having one methyl substituent and one monovalent C10-C50 organic substituent having at least two carboxy groups, wherein the molar ratio of the hydrophilized siloxane units to the dimethylsiloxane units is from about 0.035 to about 0.25;

    (2) two terminal (meth)acryloyl groups, wherein the hydrophilized polydiorganosiloxane vinylic crosslinker has a number average molecular weight of at least about 3000 Daltons.

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