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US 2008/0306221 A1Published application
(meth)acrylate functional polyurethane and method of making
AssigneePPG Industries Ohio, Inc.
InventorCharles M. Kania
Life of this patent
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Abstract
The present invention relates to (meth)acrylate functional polyurethanes that are useful in solid, particulate film-forming compositions.
Claims12
A (meth)acrylate functional polyurethane formed from reacting:
- (a) a polyisocyanate;
- and
- (b) the reaction product of:
- (i) a polyol having at least three hydroxyl groups, one of which is less reactive than the other hydroxyl groups, and
- (ii) a (meth)acrylic acid or functional equivalent thereof, in which the equivalent ratio of (ii) to (i) is (n−1):n, where n is the hydroxyl functionality of the polyol, and
- the equivalent ratio of (a) to (b) is about 1:1.
3 more elements
A (meth)acrylic functional polyurethane formed from reacting:
- (a) an isocyanurate of an aliphatic or cycloaliphatic diisocyanate with (b) the reaction product of:
- (i) a triol comprising two primary and one secondary or one tertiary hydroxyl group,
- (ii) (meth)acrylic acid or anhydride,
- in which the equivalent ratio of (ii) to (i) is about 2:3, and the equivalent ratio of (a) to (b) is 1:1.
1 more element
Dependencies are inferred from the claim text.