Adhesion promotor
US4727168A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 11, 1985 |
| Grant date | Feb 23, 1988 |
| Priority date | — |
| Expiry date | Sep 11, 2005 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09D4/00
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The invention provides an efficient method for improving the adhesive bonding strength of various types of rubbery sealant compositions, e.g. room temperature curable silicone rubber composition, to the substrate surface on which it has been cured. The method comprises coating the substrate surface with or admixing the sealant composition before application to the substrate surface with an adhesion promotor which is a reaction product of a reaction mixture comprising: PA0 (a) 1 mole of an organic amine compound having at least one active hydrogen atom in a molecule or an aminoalkyl alkoxysilane compound; PA0 (b) from 0.5 to 4 moles of an organic compound having at least one epoxy group in a molecule or an epoxyalkyl alkoxysilane; and PA0 (c) from 0.5 to 12 moles of an alkoxysilane represented by the general formula R.sup.1.sub.a Si(OR.sup.2).sub.4-a, in which R.sup.1 is a hydrogen atom or a monovalent hydrocarbon group having 1 to 4 carbon atoms, R.sup.2 is a monovalent hydrocarbon group having 1 to 4 carbon atoms or an alkoxy-substituted alkyl group and a is a number of zero, 1, 2 or 3, or a partial hydrolysis product thereof, at least one of the components (a) and (b) being an am…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.