Polyurethanes, Articles and Coatings Prepared Therefrom and Methods of Making the Same
First Claim
1. A polyurethane comprising a reaction product of components comprising:
- (a) about 1 equivalent of at least one polyisocyanate;
(b) about 0.05 to about 1 equivalents of at least one branched polyol having 4 to 18 carbon atoms and at least 3 hydroxyl groups;
(c) about 0.01 to about 0.3 equivalents of at least one polycarbonate diol; and
(d) about 0.1 to about 0.9 equivalents of at least one polyol different from the branched polyol and having 2 to 18 carbon atoms,wherein the reaction product components are essentially free of polyether polyol and the reaction components are maintained at a temperature of at least about 100°
C. for at least about 10 minutes.
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Accused Products
Abstract
The present invention provides polyurethanes including a reaction product of components including: (a) about 1 equivalent of at least one polyisocyanate; (b) about 0.05 to about 1 equivalents of at least one branched polyol having 4 to 18 carbon atoms and at least 3 hydroxyl groups; (c) about 0.01 to about 0.3 equivalents of at least one polycarbonate diol; and (d) about 0.1 to about 0.9 equivalents of at least one polyol different from the branched polyol and having 2 to 18 carbon atoms, wherein the reaction product components are essentially free of polyether polyol and the reaction components are maintained at a temperature of at least about 100° C. for at least about 10 minutes; compositions, coatings and articles made therefrom and methods of making the same.
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Citations
24 Claims
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1. A polyurethane comprising a reaction product of components comprising:
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(a) about 1 equivalent of at least one polyisocyanate; (b) about 0.05 to about 1 equivalents of at least one branched polyol having 4 to 18 carbon atoms and at least 3 hydroxyl groups; (c) about 0.01 to about 0.3 equivalents of at least one polycarbonate diol; and (d) about 0.1 to about 0.9 equivalents of at least one polyol different from the branched polyol and having 2 to 18 carbon atoms, wherein the reaction product components are essentially free of polyether polyol and the reaction components are maintained at a temperature of at least about 100°
C. for at least about 10 minutes.- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 18, 19, 20, 23, 24)
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17. A polyurethane comprising a reaction product of components comprising:
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(a) an isocyanate functional urethane prepolymer comprising a reaction product of components comprising; (i) about 1 equivalent of at least one polyisocyanate; and (ii) about 0.3 to about 0.4 equivalents of butanediol or cyclohexane dimethanol; and (b) about 0.1 to about 0.3 equivalents of trimethylolpropane; (c) about 0.4 to about 0.5 equivalents of butanediol or cyclohexane dimethanol, and (d) about 0.01 to about 0.3 equivalents of at least one polycarbonate diol, wherein the reaction product components are essentially free of polyether polyol. - View Dependent Claims (21, 22)
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Specification