Cyanoacrylate compositions
View Patent ↗This invention relates to cyanoacrylate compositions that include, in addition to the cyanoacrylate component, a compound embraced by structure A: where D is independently a member selected from O or S, and A is independently a member selected from hydrogen, linear, branched or cyclic alkyl groups having from 1 to about 20 carbon atoms, alkenyl groups having from 2 to about 20 carbon atoms, alkynyl groups having from 2 to about 20 carbon atoms, and aryl groups having from 6 to about 20 carbon atoms, with or without interruption or substitution by a member selected from halogen, silicon, hydroxy, ester, and sulfate, provided that at least one A is not H and that at least one A has at least one carboxyl group attached thereto.
1. A cyanoacrylate composition comprising:
(a) a cyanoacrylate component; and
(b) a compound embraced within structure A:
wherein D is independently a member selected from the group consisting of O and S, and
A is independently a member selected from the group consisting of hydrogen, linear, branched or cyclic alkyl groups having from 1 to about 20 carbon atoms, alkenyl groups having from 2 to about 20 carbon atoms, alkynyl groups having from 2 to about 20 carbon atoms, and aryl groups having from 6 to about 20 carbon atoms, with or without interruption or substitution by a member selected from the group consisting of halogen, silicon, hydroxy, ester, and sulfate, provided that at least one A is not H and that at least one A has at least one carboxyl group attached thereto.
2. The composition of claim 1 , further comprising an accelerator.
3. The composition of claim 2 , wherein the accelerator is a member selected from the group consisting of calixarenes and oxacalixarenes, silacrowns, crown ethers, cyclodextrins, poly(ethyleneglycol) di(meth)acrylates, ethoxylated hydric compounds and combinations thereof.
4. The composition of claim 1 , further comprising a thickener.
5. The composition of claim 1 , further comprising a thixotrope.
6. The composition of claim 1 , wherein in the compound D is O and A is ethylene carboxylic acid.
7. The composition of claim 1 , wherein the compound is present in an amount between about 0.01 and about 10 percent by weight.
8. The composition of claim 1 , further comprising a filler.
9. The composition of claim 1 , further comprising a stabilizing amount of an acidic stabilizer and a free radical inhibitor.
10. The composition of claim 1 , wherein the cyanoacrylate component is selected from materials within the structure H 2 C═C(CN)—COOR, wherein R is selected from C 1-15 alkyl, alkoxyalkyl, cycloalkyl, alkenyl, aralkyl, aryl, allyl and haloalkyl groups.
11. The composition of claim 1 , wherein the cyanoacrylate component comprises ethyl-2-cyanoacrylate.
12. Reaction products of the composition according to claim 1 .
13. A method of bonding together two substrates, comprising the steps of:
applying a cyanoacrylate composition of claim 1 , to at least one of the substrates and
mating together the substrates for a time sufficient to permit the composition to fixture.
14. A method of preparing a cyanoacrylate composition of claim 1 , comprising the steps of:
providing a cyanoacrylate component, and combining therewith with mixing a compound embraced by structure A:
wherein D is independently a member selected from the group consisting of O and S, and
A is independently a member selected from the group consisting of hydrogen, linear, branched or cyclic alkyl groups having from 1 to about 20 carbon atoms, alkenyl groups having from 2 to about 20 carbon atoms, alkynyl groups having from 2 to about 20 carbon atoms, and aryl groups having from 6 to about 20 carbon atoms, with or without interruption or substitution by a member selected from the group consisting of halogen, silicon, hydroxy, ester, and sulfate, provided that at least one A is not H and that at least one A has at least one carboxyl group attached thereto.