POLYURETHANES, ARTICLES AND COATINGS PREPARED THEREFROM AND METHODS OF MAKING THE SAME
First Claim
1. A polyurethane comprising a reaction product of components comprising:
- (1) a reaction product of(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 0.005 to about 0.35 equivalent of at least one polycaprolactone polyol; and
(b) about 0.01 to about 0.5 equivalent of at least one polyol having 2 hydroxyl groups, based upon the about 1 equivalent of the at least one polyisocyanate; and
(2) about 0.3 to about 1.0 equivalent of at least one polyol having at least 2 hydroxyl groups, based upon the about 1 equivalent of the at least one polyisocyanate,wherein the at least one polyol (b) can be the same or different from the at least one polyol (2).
3 Assignments
0 Petitions
Accused Products
Abstract
The present invention provides polyurethanes including a reaction product of components including: (1) a reaction product of (a) an isocyanate functional urethane prepolymer including a reaction product of components including: (i) about 1 equivalent of at least one polyisocyanate; and (ii) about 0.005 to about 0.35 equivalent of at least one polycaprolactone polyol; and (b) about 0.01 to about 0.5 equivalent of at least one polyol having 2 hydroxyl groups, based upon the about 1 equivalent of the at least one polyisocyanate; and (2) about 0.3 to about 1.0 equivalent of at least one polyol having at least 2 hydroxyl groups, based upon the about 1 equivalent of the at least one polyisocyanate, wherein the at least one polyol (b) can be the same or different from the at least one polyol (2); compositions, coatings and articles made therefrom and methods of making the same.
15 Citations
25 Claims
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1. A polyurethane comprising a reaction product of components comprising:
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(1) a reaction product of (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 0.005 to about 0.35 equivalent of at least one polycaprolactone polyol; and (b) about 0.01 to about 0.5 equivalent of at least one polyol having 2 hydroxyl groups, based upon the about 1 equivalent of the at least one polyisocyanate; and (2) about 0.3 to about 1.0 equivalent of at least one polyol having at least 2 hydroxyl groups, based upon the about 1 equivalent of the at least one polyisocyanate, wherein the at least one polyol (b) can be the same or different from the at least one polyol (2). - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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15. A polyurethane consisting of a reaction product of components consisting of:
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(1) a reaction product of (a) an isocyanate functional urethane prepolymer consisting of a reaction product of components consisting of; (i) about 1 equivalent of at least one polyisocyanate; and (ii) about 0.005 to about 0.35 equivalent of at least one polycaprolactone polyol; and (b) about 0.01 to about 0.5 equivalent of at least one polyol having 2 hydroxyl groups, based upon the about 1 equivalent of the at least one polyisocyanate; and (2) about 0.3 to about 1.0 equivalent of at least one polyol having at least 2 hydroxyl groups, based upon the about 1 equivalent of the at least one polyisocyanate, wherein the at least one polyol (b) can be the same or different from the at least one polyol (2).
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25. A process for preparing a polyurethane article comprising:
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(a) heating a mixture of about 1 equivalent of at least one polyisocyanate and about 0.005 to about 0.35 equivalent of at least one polycaprolactone polyol, to a temperature of about 90°
C. to about 130°
C. for at least about 1 hour to form a reaction product (a);(b) heating a mixture of the reaction product (a) with about 0.01 to about 0.5 equivalent of at least one polyol having 2 hydroxyl groups, based upon the about 1 equivalent of the at least one polyisocyanate to a temperature of about 90°
C. to about 130°
C. for at least one hour to form a reaction product (b);(c) mixing the reaction product (b) with about 0.3 to about 1.0 equivalent of at least one polyol having at least 2 hydroxyl groups, based upon the about 1 equivalent of the at least one polyisocyanate to form a reaction product (c); (d) casting the reaction product (c) into a mold preheated to a temperature of at least about 100°
C. to about 130°
C.; and(e) curing the reaction product at a first predetermined temperature of about 110°
C. to about 130°
C. for at least about 0.5 hours; and
then at a second predetermined temperature of about 125°
C. to about 180°
C. for about 15 to about 30 hours.
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Specification