Toughened epoxy resin composition
AssigneeKaneka Corporation
InventorNobuo Miyatake
Life of this patent
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Abstract
A toughened epoxy resin composition includes an end-capped polyalkylene oxide (A), an epoxy resin (B), an epoxy curing agent (C), and a core shell polymer (D). The end-capped polyalkylene oxide (A) has a number average molecular weight of 1500 to 5000, and 40% or more of a total number of ends of the end-capped polyalkylene oxide (A) are capped with at least one selected from the group consisting of an alkyl group, an allyl group, and an aryl group. A weight ratio of the end-capped polyalkylene oxide (A) to the core shell polymer (D) is 10/90 to 90/10. The core shell polymer (D) comprises a core layer in an amount of 70 to 95% by weight and the core layer is one or more selected from the group consisting of diene rubber, (meth)acrylate rubber, organosiloxane rubber, styrene polymer, and (meth)acrylate polymer.
Claims20
A toughened epoxy resin composition comprising:
- an end-capped polyalkylene oxide (A);
- an epoxy resin (B);
- an epoxy curing agent (C);
- and
- a core shell polymer (D),
- wherein the end-capped polyalkylene oxide (A) has a number average molecular weight of 1500 to 5000,
- wherein 40% or more of a total ends of the end-capped polyalkylene oxide (A) are capped with at least one group selected from the group consisting of an alkyl group, an allyl group, and an aryl group,
- wherein a weight ratio of the end-capped polyalkylene oxide (A) to the core shell polymer (D) is 10/90 to 90/10,
- wherein the core shell polymer (D) comprises a core layer in an amount of 70 to 95% by weight per 100% by weight of the core shell polymer (D),
- wherein the core layer is one or more selected from the group consisting of diene rubber, (meth)acrylate rubber, organosiloxane rubber, styrene polymer, and (meth)acrylate polymer, and
- wherein the core shell polymer (D) further comprises a shell layer that contains a copolymer comprising 60 to 99% by weight of an alkyl group-containing (meth) acrylate monomer unit, 1 to 40% by weight of an epoxy group-containing vinyl monomer unit, and 0 to 25% by weight of a monomer unit different from the alkyl group-containing (meth) acrylate monomer unit and the epoxy group-containing vinyl monomer unit.
Dependencies are inferred from the claim text.