Modified epoxy resin composition

Patent metadata

Field	Value
Publication number	US-9598528-B2
Application number	US-57593905-A
Country	US
Kind code	B2
Filing date	Sep 21, 2005
Priority date	Sep 29, 2004
Publication date	Mar 21, 2017
Grant date	Mar 21, 2017

Abstract

A crystalline epoxy resin is modified to provide an epoxy resin composition capable of producing a cured product with excellent cured product properties.
The modified epoxy resin composition comprises compound A having in its molecule a functional group represented by formula (1):

(where each of R 1 and R 2 is an alkyl group, an alkenyl group, an alkynyl group, an aryl group, an aralkyl group, a heterocyclic group, or a halogenated, aminated or nitrated derivative thereof), and compound B having a glycidyl group in its molecule. The compound A is preferably a compound resulting from replacement of from at least one to at most n glycidyl groups among n glycidyl groups in a molecule (where n is an integer of from 2 to 16) with the functional group of the formula (1). The compound B is preferably a compound having n glycidyl groups (where n is an integer of from 2 to 16) in its molecule.

First claim

The invention claimed is:

1. A modified epoxy resin composition, comprising:
a component (A) which is a mixture of compounds resulting from replacement of one glycidyl group, two glycidyl groups, and three glycidyl groups of α-type tris-(2,3-epoxypropyl)-isocyanurate with a melting point of from 98 to 107° C. with a functional group represented by formula (1) and prepared by adding acid anhydrides of formula (2):

wherein
each of R 1 and R 2 is an alkyl group, an alkenyl group, an alkynyl group, an aryl group, an aralkyl group, a heterocyclic group, or a halogenated, aminated or nitrated derivative thereof; and
a compound (B) which is an α-type tris-(2,3-epoxypropyl-isocyanurate with a melting point of from 98 to 107° C.;
wherein a molar ratio of the component (A) to the compound (B) is from 3.33/1 to 2/3
the modified epoxy resin composition is a liquid which is stable for at least 50 days at room temperature,
a total number of glycidyl groups per molecule in component (A) and compound (B) is at least two on average of a total number of (A) and (B) molecules.

2. A process for producing the modified epoxy resin composition as defined in claim 1 , comprising:
reacting compound (B) with an acid anhydride;
wherein a molar ratio of glycidyl group in the compound (B) to the acid anhydride is from 10/1 to 2/1.

3. The modified epoxy resin composition according to claim 1 , wherein compound (B) has n glycidyl groups in its molecule and n is 3.

4. A modified epoxy resin composition, comprising:
a compound (A) which is a compound resulting from replacement of an α-type glycidyl group of tris-(2,3-epoxypropyl)-isocyanurate with a melting point of from 98 to 107° C. with a functional group represented by formula (1):

wherein
each of R 1 and R 2 is an alkyl group, an alkenyl group, an alkynyl group, an aryl group, an aralkyl group, a heterocyclic group, or a halogenated, aminated or nitrated derivative thereof wherein at least one of R 1 and R 2 is an alkynyl group or a halogenated, aminated or nitrated derivative of a group selected from the group consisting of an alkyl group, an alkenyl group, an alkynyl group, an aryl group, an aralkyl group, and a heterocyclic group; and
a compound (B) wherein the compound (B) is an α-type tris-(2,3-epoxypropyl)-isocyanurate with a melting point of from 98 to 107° C.;
wherein
the modified epoxy resin composition is a liquid which is stable for at least 50 days at room temperature,
a total number of glycidyl groups per molecule in compounds (A) and (B) is at least two on average of a total number of (A) and (B) molecules.

5. The modified epoxy resin composition according to claim 4 , wherein at least one of R 1 and R 2 is an alkynyl group.

6. The modified epoxy resin composition according to claim 4 , wherein at least one of R 1 and R 2 is a halogenated, aminated or nitrated derivative of an alkyl group.

7. The modified epoxy resin composition according to claim 4 , wherein at least one of R 1 and R 2 is a halogenated, aminated or nitrated derivative of an alkenyl group.

8. The modified epoxy resin composition according to claim 4 , wherein at least one of R 1 and R 2 is a halogenated, aminated or nitrated derivative of an alkynyl group.

9. The modified epoxy resin composition according to claim 4 , wherein at least one of R 1 and R 2 is a halogenated, aminated or nitrated derivative of an aryl group.

10. The modified epoxy resin composition according to claim 4 , wherein at least one of R 1 and R 2 is a halogenated, aminated or nitrated derivative of an aralkyl group.

11. The modified epoxy resin composition according to claim 4 , wherein at least one of R 1 and R 2 is a halogenated, aminated or nitrated derivative of a heterocyclic group.

Assignees

• Gunji Yasuhiro
• Takeyama Toshiaki
• Nissan Chemical Ind Ltd

Inventors

• Gunji Yasuhiro
• Takeyama Toshiaki

Classifications

• C08L63/06

  Triglycidylisocyanurates · CPC title

• C08K5/103

  with polyalcohols · CPC title

• C08G2101/005

  Chemistry & Metallurgy · mapped topic

• C08G18/5027 Primary

  directly linked to carbocyclic groups · CPC title

• C08G2101/0083

  Chemistry & Metallurgy · mapped topic