Low VOC epoxy silane oligomer and compositions containing same
AssigneeMomentive Performance Materials Inc.
InventorsAlain Lejeune, Yves Gentil
Life of this patent
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Abstract
A process for producing a low VOC epoxy silane oligomer which includes hydrolyzing an epoxy silane, the epoxy silane upon hydrolysis of its hydrolyzable sites producing a reduced amount of volatile organic compound compared to that produced by the hydrolysis of a silane possessing an equivalent number of hydrolyzable sites all of which are hydrolyzable alkoxy groups, the hydrolyzing of the epoxy silane being carried out with less than 1.5 equivalents of water, said water being continuously fed during the hydrolysis reaction.
Claims58
A process for producing an epoxy silane oligomer which comprises hydrolyzing an epoxy silane, the epoxy silane upon hydrolysis of its hydrolyzable sites producing a reduced amount of volatile organic compound compared to that produced by the hydrolysis of a silane possessing an equivalent number of hydrolyzable sites all of which are hydrolyzable alkoxy groups, the hydrolyzing of the epoxy silane being carried out with less than 1.5 equivalents of water, said water being continuously fed during the hydrolysis reaction.
A waterborne composition which comprises:
- i) at least one epoxy silane oligomer, wherein the epoxy silane oligomer is produced by the hydrolysis of an epoxy silane, the epoxy silane upon hydrolysis of its hydrolyzable sites producing a reduced amount of volatile organic compound compared to that produced by the hydrolysis of a silane possessing an equivalent number of hydrolyzable sites all of which are hydrolyzable alkoxy groups, the hydrolyzing of the epoxy silane being carried out with less than 1.5 equivalents of water, said water being continuously fed during the hydrolysis reaction;
- and,
- ii) one or more optional ingredients selected from the group consisting of a surfactant, pH adjusting agent, co-solvent, monomeric silane, binder, crosslinker and pigment paste dispersion.
Dependencies are inferred from the claim text.