Resin composition

Patent metadata

Field	Value
Publication number	US-12404388-B2
Application number	US-202017770503-A
Country	US
Kind code	B2
Filing date	Oct 12, 2020
Priority date	Oct 30, 2019
Publication date	Sep 2, 2025
Grant date	Sep 2, 2025

Abstract

The present invention relates to a curable resin composition, etc., having an excellent transparency, applicability, and workability. Specifically, the present invention relates to a resin composition, etc., including: (A) a polymer having two or more (meth)acryloyl groups in one molecule thereof; (B) a silica powder surface-treated with an alkyl silane; and (C) boric acid or a borate ester.

First claim

What is claimed is:

1. A resin composition comprising:
(A) a polymer having two or more (meth)acryloyl groups in one molecule thereof;
(B) a silica powder surface-treated with an alkyl silane; and
(C) boric acid or a borate ester, wherein
a mass ratioofthecomponent(B):the component (C) is 9:1 to 1:9, and
said two or more (meth)acryloyl groups are represented by —C(═O)—CR=CH 2 , wherein R is hydrogen or a methyl group.

2. The resin composition according to claim 1 , wherein
the component (C) is a compound represented by the following general formula (1):
B—(OR) 3   (1)

wherein R may be the same as or different from one another, and are each hydrogen, or a functional group selected from an alkyl group, an aryl group, a carbonyl group, and an acetyl group each having 1 to 6 carbon atoms which may have a substituent.

3. The resin composition according to claim 1 , wherein
the silica powder of the component (B) is a fumed silica powder.

4. The resin composition according to claim 1 , wherein
the number of carbon atoms of an alkyl group of the component (B) is 3 to 15.

5. The resin composition according to claim 1 , wherein
an alkyl group of the component (B) is an octyl group.

6. The resin composition according to claim 1 , wherein
an average particle size of primary particles of the component (B) is 1 to 300 nm.

7. The resin composition according to claim 1 , wherein
the mass ratioofthecomponent(B):the component (C) is 8:2 to 2:8.

8. A curable resin composition comprising:
the resin composition according to claim 1 ; and
a radical polymerization initiator.

9. A cured product obtained by curing the curable resin composition according to claim 8 .

10. An adhesive comprising:
the curable resin composition according to claim 8 .

11. A sealant comprising:
the curable resin composition according to claim 8 .

12. A method for producing a resin composition comprising:
mixing
(A) a polymer having two or more (meth)acryloyl groups in one molecule thereof,
(B) a silica powder surface-treated with an alkyl silane, and
(C) boric acid or a borate ester, wherein

a mass ratioofthecomponent(B):the component (C) is 9:1 to 1:9, and
said two or more (meth)acryloyl groups are represented by —C(═O)—CR—CH 2 , wherein R is hydrogen or a methyl group.

13. A method for producing a cured product comprising the steps of:
producing a resin composition by mixing
(A) a polymer having two or more (meth)acryloyl groups in one molecule thereof,
(B) a silica powder surface-treated with an alkyl silane, and
(C) boric acid or a borate ester, wherein
a mass ratioofthecomponent(B):the component (C) is 9:1 to 1:9, and
said two or more (meth)acryloyl groups are represented by —C(═O)—CR=CH 2 , wherein R is hydrogen or a methyl group;

mixing the resin composition with (D) a radical polymerization initiator; and
producing a cured product by curing the resin composition with light or heating.

14. A curable resin composition comprising:
the resin composition according to claim 1 ; and
a radical polymerization initiator, wherein the resin composition meets at least one of the following conditions:
(i) the component (C) is a compound represented by the following general formula (1):
B—(OR) 3   (1)

wherein R may be the same as or different from one another, and are each hydrogen, or a functional group selected from an alkyl group, an aryl group, a carbonyl group, and an acetyl group each having 1 to 6 carbon atoms which may have a substituent,

(ii) the silica powder of the component (B) is a fumed silica powder,
(iii) the number of carbon atoms of an alkyl group of the component (B) is 3 to 15,
(iv) an alkyl group of the component (B) is an octyl group, or
(v) an average particle size of primary particles of the component (B) is 1 to 300 nm.

15. A cured product obtained by curing the curable resin composition according to claim 14 .

16. An adhesive comprising:
the curable resin composition according to claim 14 .

17. A sealant comprising:
the curable resin composition according to claim 14 .

18. The method according to claim 12 , wherein
the mass ratioofthecomponent(B):the component (C) is 8:2 to 2:8.

19. The method according to claim 13 , wherein
the mass ratioofthecomponent(B):the component (C) is 8:2 to 2:8.

20. The curable resin composition according to claim 14 , wherein
the mass ratioofthecomponent(B):the component (C) is 8:2 to 2:8.

Assignees

• Three Bond Co Ltd

Inventors

• Hashimoto Takahiro

Classifications

• C09K2200/0625

  Polyacrylic esters or derivatives thereof · CPC title

• C09K3/10

  {Materials in mouldable or extrudable form} for sealing or packing joints or covers (filling pastes C09D5/34) · CPC title

• C09J135/02

  Homopolymers or copolymers of esters (C09J135/06, C09J135/08 take precedence) · CPC title

• C09J11/06

  organic · CPC title

• C09J11/04

  inorganic · CPC title