Silicon-containing alpha-cyanoacrylates
US5140084A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 24, 1991 |
| Grant date | Aug 18, 1992 |
| Priority date | — |
| Expiry date | Apr 24, 2011 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07F7/081
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A silicon-containing alpha-cyanoacrylate, useful as an adhesive, having the general formula: ##STR1## wherein R.sup.1 is an alkylene group containing 1 to 6 carbon atoms; and R.sup.2, R.sup.3 and R.sup.4 are each alkyl groups containing 1 to 6 carbon atoms, is disclosed. A process for preparing the silicon-containing alpha-cyanoacrylate compound is also set forth. In this process a cyanoacetate having the structural formula ##STR2## wherein R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are as defined above, is dehydrocondensed with formaldehyde or paraformaldehyde in the presence of a basic catalyst to produce a condensation polymer. The condensation polymer is thereupon depolymerized at elevated temperature to produce the silicon-containing alpha-cyanoacrylate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.