Patent ID: 6180741
Filing Date: 2001-01-30
Classification: C08G,C08L,C09D,G02B

Abstract:
A liquid curable resin composition comprising: 0.05-10 wt % of a first polydimethylsiloxane having a molecular weight of 800-15,000 comprising:(a) at least two urethane bonds, an organic group unreactive to vinyl polymerisation attached to at least one end of the first polydimethylsiloxane, and a (meth)acryloyl group attached to at least one end of the first polydimethysiloxane, and(b) 0.05-2 wt % of a second polydimethylsiloxane having a molecular weight of 800-13,000 comprising:at least two urethane bonds, and an organic group unreactive to vinyl polymerisation and exclusive of a (meth)acryloyl group attached to at least one end of the second polydimethylsiloxane;(c) 0-90 wt % of a urethane (meth)acrylate oligomer; and(d) less than 80 wt % of a reactive diluent; wherein all said weight percentages are relative to the total composition.