Blocked isocyanate, photo-curable composition, resin, and method of manufacturing three-dimensional object
AssigneeCanon Kabushiki Kaisha
InventorSeiji Okada
Life of this patent
Estimating the term…
Abstract
Provided is a photo-curable composition capable of creating a three-dimensional object excellent in both of: stiffness and strength; and toughness. Specifically, provided is a photo-curable composition including: a blocked isocyanate represented by the general formula (1); a chain extender; and a photo-radical generator: in the general formula (1), A1 to A4 each independently represent a structure represented by the following general formula (2), and B represents a structure represented by the following general formula (3).
Claims14
A blocked isocyanate represented by the general formula (1):
- in the general formula (1), A1 to A4 each independently represent a structure represented by the following general formula (2), and B represents a structure represented by the following general formula (3);
- in the general formula (2), R1 represents a hydrogen atom or a methyl group, R2 represents a hydrocarbon group having 1 to 10 carbon atoms which may have a substituent, and L1 represents a divalent hydrocarbon group having 1 to 10 carbon atoms which may have a substituent;
- in the general formula (3), R3a, R3b, R4, R5, R6, and R7 each independently represent a divalent hydrocarbon group having 1 to 20 carbon atoms which may have a substituent, Y1 represents a divalent linking group, and “a” represents an integer of 1 or more and 99 or less.
A photo-curable composition comprising:
- a blocked isocyanate represented by the general formula (1);
- a chain extender;
- and
- a photo-radical generator:
- in the general formula (1), A1 to A4 each independently represent a structure represented by the following general formula (2), and B represents a structure represented by the following general formula (3);
- in the general formula (2), R1 represents a hydrogen atom or a methyl group, R2 represents a hydrocarbon group having 1 to 10 carbon atoms which may have a substituent, and L1 represents a divalent hydrocarbon group having 1 to 10 carbon atoms which may have a substituent;
- in the general formula (3), R3a, R3b, R4, R5, R6, and R7 each independently represent a divalent hydrocarbon group having 1 to 20 carbon atoms which may have a substituent, Y1 represents a divalent linking group, and “a” represents an integer of 1 or more and 99 or less.
A resin comprising a repeating structural unit represented by the following general formula (4):
- in the general formula (4), R5, R9, R10, and R11 each independently represent a hydrogen atom or a methyl group, R12, R13, R14, and R15 each independently represent a hydrocarbon group having 1 to 10 carbon atoms which may have a substituent, L2, L3, L4, and L5 each independently represent a divalent hydrocarbon group having 1 to 10 carbon atoms which may have a substituent, R16a, R16b, R17, R18, R19, and R20 each independently represent a divalent hydrocarbon group having 1 to 20 carbon atoms which may have a substituent, Y2 represents a divalent linking group, and “b” represents an integer of 1 or more and 99 or less.
A resin comprising a repeating structural unit represented by the following general formula (5) and a repeating structural unit represented by the following general formula (6):
- in the general formula (5), R21 represents a hydrogen atom or a methyl group, R22 represents a hydrocarbon group having 1 to 10 carbon atoms, and L6 represents a divalent hydrocarbon group having 1 to 10 carbon atoms;
- in the general formula (6), L7, L8, L9, and L10 each independently represent a divalent hydrocarbon group having 1 to 10 carbon atoms which may have a substituent, R23a, R23b, R24, R25, R26, and R27 each independently represent a divalent hydrocarbon group having 1 to 20 carbon atoms which may have a substituent, Y3 represents a divalent linking group, c represents an integer of 1 or more and 99 or less, and X1, X2, X3, X4, X5, X6, X7, and X8 each independently represent any one of O, S, and NH.
A method of manufacturing a three-dimensional object comprising photo-curing a photo-curable composition comprising:
- a blocked isocyanate represented by the general formula (1);
- a chain extender;
- and a photo-radical generator layer by layer based on slice data to create a three-dimensional object:
- in the general formula (1), A1 to A4 each independently represent a structure represented by the following general formula (2), and B represents a structure represented by the following general formula (3);
- in the general formula (2), R1 represents a hydrogen atom or a methyl group, R2 represents a hydrocarbon group having 1 to 10 carbon atoms which may have a substituent, and L1 represents a divalent hydrocarbon group having 1 to 10 carbon atoms which may have a substituent;
- in the general formula (3), R3a, R3b, R4, R5, R6, and R7 each independently represent a divalent hydrocarbon group having 1 to 20 carbon atoms which may have a substituent, Y1 represents a divalent linking group, and “a” represents an integer of 1 or more and 99 or less.
Dependencies are inferred from the claim text.