Claims
- 1. A bonded assembly which is comprised of at least two components wherein a surface of one component is bonded to a surface of the other component with a cured adhesive comprising before curing:
- a) a methacrylate ester monomer;
- b) an elastomeric polymer selected from the group consisting of nitrile rubber; polychloroprene; copolymers of butadinene or isoprene with styrene; copolymers of butadiene or styrene with acrylate esters; copolymers of butadiene or styrene 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 and 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.
- 2. The bonded assembly of claim 1 wherein the copolymer of butadiene or isoprene and styrene is a block copolymer.
- 3. The bonded assembly or claim 1 wherein the adhesive contains a free radical polymerizable ethylenically unsaturated mono or polycarboxylic acid.
- 4. The bonded assembly of claim 3 wherein the acid is methacrylic acid.
- 5. The bonded assembly of claim 1 wherein the methacrylate ester monomer is at least 50 weight percent methyl methacrylate.
- 6. The bonded assembly of claim 1 wherein the elastomeric polymer is soluble in the monomer in the amount of from about 10 to about 35 weight percent based on the weight of the solution.
- 7. The bonded assembly of claim 1 wherein the Tg of the core of the core-shell graft copolymer is substantially below ambient temperatures and the Tg of the shell is substantially above ambient temperatures.
- 8. The bonded assembly of claim 1 wherein the cured adhesive has an adhesive bond strength of at least 15 ft-lbs per sq. in. and bulk tensile elongation greater than 10 percent when measured at -10.degree. F. or below.
- 9. The bonded assembly of claim 1 wherein the components are plastic or metal.
- 10. The bonded assembly of claim 9 wherein the plastic component is comprised of a polycarbonate/polyester thermoplastic resin blend.
CROSS REFERENCE
This is a division of U.S. patent application Ser. No. 07/238,302, filed Aug. 29, 1988 now U.S. Pat. No. 4,942,201.
US Referenced Citations (2)
Number |
Name |
Date |
Kind |
4536546 |
Briggs |
Aug 1985 |
|
4596857 |
Doi et al. |
Jun 1986 |
|
Foreign Referenced Citations (1)
Number |
Date |
Country |
087304 |
Aug 1983 |
EPX |
Divisions (1)
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Number |
Date |
Country |
Parent |
238302 |
Aug 1988 |
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