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US 2011/0313082 A1Published application
Epoxy adhesive compositions with high mechanical strength over a wide temperature range
OwnerMatthias Poppinventor
Life of this patent
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Abstract
A heat-curable adhesive composition comprising an epoxy-resin, a combination of core-shell toughening agents, a first curing agent being a linear aliphatic amined and a second curing agent being a cyclic aliphatic amine and a filler wherein the composition can be cured to form structural adhesives of high mechanical strength over a temperature range from −55° C. to up to 135° C.
Claims17
A precursor composition for a curable adhesive, said precursor composition comprising two parts, part (A) and part (B), which are separated from each other,
- wherein part (B) comprises the following components:
- (i) one or more epoxy resins,
- wherein part (A) comprises the following components:
- (ii) a combination of at least two curing agents, the first curing agent comprising a cycloaliphatic amine and the second curing agent being different from the first curing agent comprising a linear aliphatic amine,
- the precursor composition further comprising either in part (A) or in part (B) or in both (A) and (B)
- (iii) a first core-shell polymer toughening agent
- (iv) a second core-shell polymer toughening agent
- (v) a filler material selected from particles having a particle size from about 0.5 to about 500 μm, with the first core-shell polymer having a core comprising a silicone polymer or copolymer and the second core shell polymer having a core comprising a diene polymer or copolymer.
5 more elements
(canceled)
An adhesive composition comprising
- (i) the reaction product of an epoxy resin with a linear aliphatic amine and a cycloaliphatic amine,
- (ii) a first core-shell polymer toughening agent
- (iii) a second core-shell polymer toughening agent
- (iv) a filler material selected from particles having a particle size from about 0.5 to about 500 μm, wherein the first core-shell polymer has a core comprising a silicone polymer or copolymer and the second core-shell polymer has a core comprising a diene polymer or copolymer.
1 more element
(canceled)
Dependencies are inferred from the claim text.