Method for producing biphenyl-skeleton-containing epoxy resin

Patent metadata

Field	Value
Publication number	US-9765179-B2
Application number	US-201414890237-A
Country	US
Kind code	B2
Filing date	May 15, 2014
Priority date	May 15, 2013
Publication date	Sep 19, 2017
Grant date	Sep 19, 2017

Abstract

Disclosed is a method for producing a biphenyl-skeleton-containing epoxy resin represented by Formula (1) described below including a step of allowing polyvalent hydroxy biphenyl obtained by a production step including a regioselective cross-coupling reaction to react with epihalohydrin.

(In the formula, k1 and l1 each represent an integer of 0 to 4, m and n each represent an integer of 1 to 5, R 1 and R 2 each independently represent a hydrocarbon group having 1 to 10 carbon atoms which may have a substituent group, and R 1 and R 2 may be identical to each other or different from each other. (Provided that left and right phenyl structures of a biphenyl skeleton are different from each other.)

First claim

The invention claimed is:

1. A method for producing a biphenyl-skeleton-containing epoxy resin represented by Formula (1) described below, comprising:
a step of allowing a polyvalent hydroxy biphenyl obtained by a production step including a regioselective cross-coupling reaction to react with epihalohydrin:

in the formula, k1 and l1 each represent an integer of 0 to 4, m and n each represent an integer of 1 to 5, R 1 and R 2 each independently represent a hydrocarbon group having 1 to 10 carbon atoms which may have a substituent group, and R 1 and R 2 may be identical to each other or different from each other, provided that left and right phenyl structures of a biphenyl skeleton are different from each other.

2. The method for producing a biphenyl-skeleton-containing epoxy resin according to claim 1 ,
wherein the regioselective cross-coupling reaction is a cross-coupling reaction between at least one compound selected from aryl boronic acids and an anhydride thereof, ester and a borate salt represented by Formula (2) described below, and at least one compound selected from aryl halide or aryl sulfonate represented by Formula (3) described below:

k1 and l1 each represent an integer of 0 to 4, m and n each represent an integer of 1 to 5, R 1 and R 2 each independently represents a hydrocarbon group having 1 to 10 carbon atoms which may have a substituent group, R 1 and R 2 may be identical to each other or different from each other, R 3 and R 4 each independently represent a hydrogen atom, a methyl group, a benzyl group, a tetrahydropyranyl group, a tetrahydrofuryl group, a methoxymethyl group, an ethoxymethyl group, a silyl group, a trimethyl silyl group, a tert-butyl dimethyl silyl group, or a triisopropyl silyl group, and X represents a chlorine atom, a bromine atom, an iodine atom, triflate, mesylate, tosylate, or nosylate.

Assignees

• Dainippon Ink & Chemicals

Inventors

• YOSHIMOTO Yasuyo
• Morinaga Kunihiro
• Kinoshita Hiroshi

Classifications

• C08G59/063 Primary

  with epihalohydrins · CPC title

• C08G59/02

  Polycondensates containing more than one epoxy group per molecule · CPC title

• C07D405/10

  linked by a carbon chain containing aromatic rings · CPC title

• C07D303/30 Primary

  Ethers of oxirane-containing polyhydroxy compounds in which all hydroxyl radicals are etherified with oxirane-containing hydroxy compounds · CPC title

• C07D405/14

  containing three or more hetero rings · CPC title