Photo-curable resin composition and process for preparing resin-based mold
First Claim
1. A process for the preparation of a resin-based three-dimensional object comprising the steps of:
- forming a first layer of a photo-curable resin composition comprising;
as premixture ingredients;
a monomer component comprising,at least one polyfunctional (meth)acrylate monomer represented by the following formula (1);
##STR3## wherein R1 independently represents a hydrogen atom or a methyl group, R2 independently represents a divalent hydrocarbon group comprising 2 to 10 carbon atoms, R3 represents an organic group with a valence of n and comprising 2 to 20 carbon atoms, n represents an integer of from 2 to 6, andat least one ethylenically unsaturated monomer having at least one cyclic structure;
curing select portions of said first layer by radiation to form a first cured layer;
applying a second layer of said photo-curable resin composition, on top of said first cured layer;
curing select portions of said second layer by radiation to form a second cured layer; and
repeating said applying and curing steps a plurality of times to produce a resin-based three-dimensional object comprising a plurality of integrally laminated layers of cured resin.
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Accused Products
Abstract
A photo-curable resin composition suitable as a material for optical molding. The composition can produce cured products with excellent mechanical strength and high heat resistance. Further disclosed is a process for molding a resin-based mold which provides superior molding dimensional precision and superb repetition durability. The composition contains a monomer component which contains (A) 20-80 wt % of a urethane-bond polyfunctional (meth)acrylate having a number average molecular weight of 1,000 or less and (B) 80-20 wt % of an ethylenically unsaturated monomer containing a cyclic structure and at least one ethylenically unsaturated bond in the molecule and of which the homopolymer has a glass transition temperature of 50° C. or higher; (C) a photopolymerization initiator; and (D) an inorganic filler having an average particle diameter or an average fiber length of 1-50 μm, wherein the ratio of the inorganic filler for 100 parts by volume of said monomer components and the photopolymerization initiator is 100-160 parts by volume, and the heat distortion temperature of the cured resin produced from the photo-curable resin composition is 80° C. or higher.
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Citations
24 Claims
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1. A process for the preparation of a resin-based three-dimensional object comprising the steps of:
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forming a first layer of a photo-curable resin composition comprising;
as premixture ingredients;a monomer component comprising, at least one polyfunctional (meth)acrylate monomer represented by the following formula (1);
##STR3## wherein R1 independently represents a hydrogen atom or a methyl group, R2 independently represents a divalent hydrocarbon group comprising 2 to 10 carbon atoms, R3 represents an organic group with a valence of n and comprising 2 to 20 carbon atoms, n represents an integer of from 2 to 6, andat least one ethylenically unsaturated monomer having at least one cyclic structure; curing select portions of said first layer by radiation to form a first cured layer; applying a second layer of said photo-curable resin composition, on top of said first cured layer; curing select portions of said second layer by radiation to form a second cured layer; and repeating said applying and curing steps a plurality of times to produce a resin-based three-dimensional object comprising a plurality of integrally laminated layers of cured resin. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A process for making a three-dimensional object comprising the steps of:
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forming and selectively curing a plurality of layers of a photo-curable resin composition comprising;
as premixture ingredients;a monomer component comprising, at least one polyfunctional urethane (meth)acrylate monomer, and at least one ethylenically unsaturated monomer having at least one cyclic structure; and repeating said forming and selectively curing steps a plurality of times to produce a resin-based three-dimensional object comprising a plurality of integrally laminated layers of cured resin. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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Specification