Polyurethane resins having multiple mechanisms of hardening for use in producing three-dimensional objects
First Claim
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1. A polymerizable liquid useful for the production of a three-dimensional object comprised of polyurethane, polyurea, or a copolymer thereof by additive manufacturing, said polymerizable liquid comprising a mixture of:
- (a) a reactive blocked prepolymer comprising a compound of the formula A-X-A, where X is a hydrocarbyl group and each A is an independently selected substituent of Formula X;
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Abstract
A polymerizable liquid, or resin, useful for the production by additive manufacturing of a three-dimensional object of polyurethane, polyurea, or a copolymer thereof, is described. The resin includes at least one of (i) a blocked or reactive blocked prepolymer, (ii) a blocked or reactive blocked diisocyanate, or (iii) a blocked or reactive blocked diisocyanate chain extender.
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Citations
30 Claims
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1. A polymerizable liquid useful for the production of a three-dimensional object comprised of polyurethane, polyurea, or a copolymer thereof by additive manufacturing, said polymerizable liquid comprising a mixture of:
(a) a reactive blocked prepolymer comprising a compound of the formula A-X-A, where X is a hydrocarbyl group and each A is an independently selected substituent of Formula X; - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 25, 29)
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9. A polymerizable liquid useful for the production of a three-dimensional object comprised of polyurethane, polyurea, or a copolymer thereof by additive manufacturing, said polymerizable liquid comprising a mixture of:
(a) a reactive blocked diisocyanate comprising a compound of the formula A′
-X′
-A′
, where X′
is a hydrocarbyl group and each A′
is an independently selected substituent of Formula (X′
);- View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17, 26, 30)
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18. A polymerizable liquid useful for the production of a three-dimensional object comprised of polyurethane, polyurea, or a copolymer thereof by additive manufacturing, said polymerizable liquid comprising a mixture of:
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(a) a polyol and/or polyamine, (b) a reactive blocked diisocyanate chain extender comprising a compound of the formula A″
-X″
-A″
, where X″
is a hydrocarbyl group, and each A″
is an independently selected substituent of Formula (X″
); - View Dependent Claims (19, 20, 21, 22, 23, 24, 27, 28)
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Specification