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US 11,111,333 B2Granted
Resin compositions and resin infusion process
AssigneeCytec Industries Inc.
InventorsJonathan E. Meegan, Marco Aurilia
Life of this patent
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Abstract
Curable epoxy resin compositions suitable for liquid resin infusion processes. In one embodiment, the resin composition contains (a) at least two polyepoxides, one of which is triglycidyl ether of tris(hydroxyphenyl)methane, (b) an aromatic amine curing agent, and (c) core-shell rubber particles. In another embodiment, the resin composition (a) at least two polyepoxides, one of which is diglycidyl ether of bis(hydroxyphenyl)fluorene, (b) an aromatic amine curing agent, and (c) core-shell rubber particles.
Claims5
A curable epoxy resin composition suitable for liquid resin infusion, comprising:
- (A) a combination of polyepoxides consisting of:
- (i) triglycidyl ether of tris(hydroxyphenyl)-methane represented by Formula I:
- (ii) diglycidyl ether of Bisphenol F or Bisphenol A;
- (iii) a difunctional epoxide represented by the following Formula II:
- and
- (iv) an epoxy novolac resin represented by the following Formula III:
- where n=1 to 5, and R=H
- (B) 9,9-bis(4-amino-3-chlorophenyl)fluorene and/or 9,9-bis(4-aminophenyl)fluorene;
- and
- (C) core-shell rubber particles,
- wherein the weight percentages of the polyepoxides, based on the total weight of the epoxy resin composition, are as follows:
- 2% to 10% polyepoxide (i);
- 24% to 38% polyepoxides (ii) and (iii) combined;
- and 1% to 7% polyepoxide (iv),
- wherein the molar ratio of component (B) to component (A) is 1:1 to 2:1,
- wherein the amount of core-shell rubber particles is in the range of 0.3% to 10% by weight, based on the total weight of the epoxy resin composition, and
- wherein the curable epoxy resin composition is void of any thermoplastic polymer.
14 more elements
Dependencies are inferred from the claim text.