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US 5,206,288 AGranted
Adhesive for low temperature applications
AssigneeIllinois Tool Works Inc.
InventorsDonald E. Gosiewski, Paul C. Briggs
Life of this patent
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Abstract
Adhesive compositions are made from methacrylate ester monomers, elastomeric polymers having a Tg below -25.degree. C. and which are soluble in the monomers, core-shell polymers which swell in the monomers but do not dissolve therein, and free radical producing catalysts. These adhesive compositions when used in bonded assemblies exhibit a combination of high adhesive bond impact strength and high bulk tensile elongation.
Claims7
An adhesive composition comprising:
- a) a methacrylate ester monomer wherein the alcohol portion of the ester contains one to about 8 carbon atoms;
- b) an elastomeric polymer selected from the group consisting of nitrile rubber;
- polychloroprene;
- copolymers of butadiene or isoprene with styrene;
- copolymers of butadiene or isoprene with acrylate esters;
- copolymers of butadiene or isoprene with methacrylate esters;
- copolymers of ethylene and acrylate esters;
- homopolymers of epichlorohydrin;
- and copolymers of epichlorohydrin and ethylene oxide, wherein said elastomeric polymer is soluble in the ester monomer wherein soluble is defined as capable of forming solutions of from about 10 to about 35 weight percent elastomer in methyl methacrylate and wherein said elastomeric polymer has a Tg below about -25.degree. C.;
- c) a core-shell graft copolymer which swells in the monomer but does not dissolve therein;
- and
- d) a free radical producing catalyst.
9 more elements
Dependencies are inferred from the claim text.