Silicone-modified epoxy resin and composition and cured article thereof

Patent metadata

Field	Value
Publication number	US-2016237202-A1
Application number	US-201415023263-A
Country	US
Kind code	A1
Filing date	Sep 19, 2014
Priority date	Sep 20, 2013
Publication date	Aug 18, 2016
Grant date	—

Abstract

Problem to be Solved
The purpose of the invention, in view of the above circumstances, is to provide a silicone-modified epoxy resin composition that offers a cured article excellent in low gas permeability and strength, and an epoxy resin cured article obtained by curing the composition.
Solution
An epoxy resin represented by the following formula (1) wherein R 1 represents an alkylene group having 2 to 6 carbon atoms and optionally containing an ester or ether bond; R 2 represents a monovalent aliphatic hydrocarbon group having 1 to 6 carbon atoms or a monovalent aromatic hydrocarbon group having 6 to 12 carbon atoms; R 3 represents an oxygen atom or a phenylene group; k represents 1 to 10 as an average value; m represents an integer of 0 to 2; n represents 0 to 10 as an average value; and a plurality of groups R 1 , R 2 , R 3 , k, or m present in the formula may be the same or different from each other.

First claim

1 . A silicone-modified epoxy resin represented by the following formula (1):

wherein R 1 represents an alkylene group having 2 to 6 carbon atoms and optionally containing an ester or ether bond; R 2 represents a monovalent aliphatic hydrocarbon group having 1 to 6 carbon atoms or a monovalent aromatic hydrocarbon group having 6 to 12 carbon atoms; R 3 represents an oxygen atom or a phenylene group; k represents 1 to 10 as an average value; m represents an integer of 0 to 2; n represents 0 to 10 as an average value; and a plurality of groups R 1 , R 2 , R 3 , k, or m present in the formula may be the same or different from each other.

2 . The silicone-modified epoxy resin according to claim 1 , wherein the silicone-modified epoxy resin is a reaction product of compounds represented by the following formulas (2) and (6):

wherein m is as defined above; and R 4 represents an alkylene group having 0 to 4 carbon atoms and optionally containing an ester or ether bond, and

wherein R 2 , R 3 , and k are each as defined above.

3 . The silicone-modified epoxy resin according to claim 1 , wherein the silicone-modified epoxy resin is obtained by reacting compounds represented by the following formulas (2), (6), and (8):

wherein m is as defined above; and R 4 represents an alkylene group having 0 to 4 carbon atoms and optionally containing an ester or ether bond,

wherein R 2 , R 3 , and k are each as defined above, and

wherein m and R 4 are each as defined above.

4 . The silicone-modified epoxy resin according to claim 1 , wherein the silicone-modified epoxy resin is obtained by oxidizing a diolefin compound of the following formula (4):

wherein R 1 to R 3 , k, m, and n are each as defined above.

5 . An epoxy resin composition comprising (A) a silicone-modified epoxy resin according to claim 1 and (B) an epoxy resin curing agent.

6 . The epoxy resin composition according to claim 5 , further comprising (C) an epoxy resin curing catalyst.

7 . The epoxy resin composition according to claim 5 , wherein the epoxy resin curing agent is selected from an amine curing agent, a phenol curing agent, an acid anhydride curing agent, and a polyvalent carboxylic acid resin.

8 . A cured article obtained by curing an epoxy resin composition according to claim 5 .

Assignees

• Shinetsu Chemical Co
• Nippon Kayaku Kk

Inventors

• Shiobara Toshio
• Sawada Junichi
• Wakao Miyuki
• Kashiwagi Tsutomu
• Miyagawa Naofusa
• Kawada Yoshihiro
• Sasaki Chie
• Nakanishi Masataka
• Kuboki Kenichi

Classifications

• C08G59/30 Primary

  containing atoms other than carbon, hydrogen, oxygen and nitrogen · CPC title

• C08G59/306 Primary

  containing silicon · CPC title