Three-dimensional-forming photo-curable composition, method for producing three-dimensional article from the photo-curable composition, and resin

Patent metadata

Field	Value
Publication number	US-2019382576-A1
Application number	US-201916554453-A
Country	US
Kind code	A1
Filing date	Aug 28, 2019
Priority date	Mar 3, 2017
Publication date	Dec 19, 2019
Grant date	—

Abstract

A three-dimensional-forming photo-curable composition includes a (meth)acrylic compound having a (meth)acryloyl group; a photo-radical generator; and a polyrotaxane having a plurality of cyclic molecules having at least one of a (meth)acryloyl group and a hydroxyl group.

First claim

1 . A three-dimensional-forming photo-curable composition comprising a (meth)acrylic compound having a (meth)acryloyl group; a photo-radical generator; and
a polyrotaxane having a plurality of cyclic molecules having at least one of a (meth)acryloyl group and a hydroxyl group, wherein the (meth)acrylic compound includes a blocked isocyanate represented by a general formula (1) below:
A-B—C  (1)

(in the formula (1), A and C each independently represent a group represented by a formula (2) below, and B represents a group represented by a formula (3) below:

(in the formula (2), R 1 represents a hydrogen atom or a methyl group, R 2 represents a hydrocarbon group that has 1 to 10 carbon atoms and may have a substituent, and L 1 represents a divalent hydrocarbon group that has 1 to 10 carbon atoms and may have a substituent; in the formula (3), R 3 and R 4 each represent a hydrocarbon group that has 1 to 20 carbon atoms and may have a substituent, and a is an integer of 1 or more and 100 or less),
wherein the polyrotaxane has a hydroxyl group, and
the three-dimensional-forming photo-curable composition comprises a reaction accelerator.

2 . The three-dimensional-forming photo-curable composition according to claim 1 , wherein, in the formula (3), R 3 has at least one divalent linking group selected from the group consisting of formulas (A-1) to (A-4) below:

(in the formula (A-1), c is an integer of 1 or more and 10 or less; and, in the formula (A-2), d is an integer of 1 or more and 10 or less).

3 . The three-dimensional-forming photo-curable composition according to claim 1 , wherein the blocked isocyanate is represented by a general formula (4) below:
A-B-A  (4).

4 . The three-dimensional-forming photo-curable composition according to claim 1 , further comprising a radical polymerizable compound other than the (meth)acrylic compound and/or a cationic polymerizable compound.

5 . The three-dimensional-forming photo-curable composition according to claim 1 , wherein an amount of the polyrotaxane added relative to 100 mass % of a total amount of the photo-curable composition is 1 mass % or more and 50 mass % or less.

6 . The three-dimensional-forming photo-curable composition according to claim 1 , wherein an amount of the photo-radical generator added relative to 100 mass % of a total amount of the photo-curable composition is 0.05 mass % or more and 20 mass % or less.

7 . A method for producing a three-dimensional article, comprising a step of photo-curing a three-dimensional-forming photo-curable composition based on slice data to form a formed article,
wherein the three-dimensional-forming photo-curable composition is the three-dimensional-forming photo-curable composition according to claim 1 .

8 . A method for producing a three-dimensional article, comprising a step of photo-curing a three-dimensional-forming photo-curable composition based on slice data to form a formed article; and
a step of heat-treating the formed article to obtain a three-dimensional article, wherein the three-dimensional-forming photo-curable composition is the three-dimensional-forming photo-curable composition according to claim 1 .

Assignees

• Canon Kk

Inventors

• Okada Seiji
• Wada Kyohei

Classifications

• B33Y10/00

  Processes of additive manufacturing · CPC title

• C08G83/007

  Polyrotaxanes; Polycatenanes · CPC title

• C08L33/12 Primary

  Homopolymers or copolymers of methyl methacrylate · CPC title

• B33Y70/00 Primary

  Materials specially adapted for additive manufacturing · CPC title

• C08L75/14

  Polyurethanes having carbon-to-carbon unsaturated bonds · CPC title