POLYSILOXANE BASED BLOCK COPOLYMERS
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United States of America Patent
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Issued Date -
Jan 21, 2016
app pub date -
Feb 14, 2013
filing date -
Feb 15, 2012
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Abstract
The invention is directed to polysiloxane based block copolymers that comprise siloxane units and units derived from diol compounds comprising at least one pendant oligomeric or polymeric group. The block copolymers according to the invention surprisingly allows any glassware used during its preparation to be washed cleaned with water. The block copolymer can be used in ophthalmic lenses, and may be useful in providing contact lens formulations which are water processable.
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