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US 4,307,216 AGranted
Adhesive composition
AssigneeSumitomo Chemical Company, Limited
InventorsYoshihisa Shiraishi, Kazuhiro Nakagawa, Chiaki Nakata, Koiti Ohasi
Life of this patent
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Abstract
An adhesive composition which comprises an .alpha.-cyanoacrylate compound with a certain ester ether compound and, preferably, a polyhydroxybenzoic acid compound. The composition is enhanced in heat shock resistance and improved in initial adhesion rate.
Claims6
An adhesive composition which comprises:
- not less than 50% by weight based on the weight of the composition of an .alpha.-cyanoacrylate compound of the formula:
- ##STR4## wherein R is a C.sub.1 -C.sub.16 alkyl group optionally having a phenyl group or a chlorine atom substituent thereon, an allyl group or a phenyl group;
- and
- 0. 05 to 20% by weight based on the weight of the .alpha.-cyanoacrylate compound (I) of an ester compound of the formula:
- ##STR5## having a molecular weight of not more than 20,000, wherein X.sub.1 is a hydrogen atom or a methyl group, X.sub.2 is a hydrogen atom, a methyl group or a cyano group, X.sub.3 is a hydrogen atom, --R' or --OCR" (in which R' and R" are each a C.sub.1 -C.sub.18 hydrocarbon group not containing any anion polymerizable group) but when X.sub.2 is a cyano group, X.sub.3 is not a hydrogen atom, l and m are each zero or a positive integer but l+m is not zero and n is a positive integer.
2 more elements
Dependencies are inferred from the claim text.