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US 4,228,054 AGranted
Organopolysiloxane latex compositions
AssigneeToray Silicone Company, Ltd.
InventorsIsao Ona, Masaru Ozaki, Katsutoshi Usui
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Abstract
What is disclosed are organopolysiloxane latex compositions which are crosslinked by organofunctional silanes which compositions are useful for binding fiberglass fibers. Such compositions are, for example, N-(.beta.-aminoethyl)-.gamma.-aminopropyltrimethoxysilane crosslinked dimethylpolysiloxanes which have been prepared in emulsion using octamethylcyclotetrasiloxane and octylbenzenesulfonic acid.
Claims8
A composition of matter which is a mixture of an organopolysiloxane obtained by polymerizing a cyclic organopolysiloxane in the presence of
- (A) an organofunctionaltrialkoxysilane;
- (B) a surfactant and,
- (C) water,
- wherein the cyclic organopolysiloxane before polymerization has the general formula ##STR4## wherein R.sup.2 and R.sup.3 are independently selected from substituted or unsubstituted monovalent hydrocarbon radicals containing 1-10 carbon atoms and n has an average value of 3-6;
- the organofunctionaltrialkoxysilane has the general formula
- (R'O).sub.3 SiRX
- wherein R' is a monovalent hydrocarbon radical containing less than 7 carbon atoms or is selected from the group consisting of --CH.sub.2 OC.sub.2 H.sub.5 or --CH.sub.2 CH.sub.2 OCH.sub.3, R is a divalent hydrocarbon radical containing no more than 12 carbon atoms, X is an organofunctional radical selected from the group consisting of --NH.sub.2, --CH.sub.2 CH.sub.2 NH.sub.2, --(CH.sub.2).sub.4 NH.sub.2, N-cyclohexylamino, N-phenylamino, N-aminoethylamine, N,N-dimethylamino, glycidyl, 3,4-epoxycyclohexyl, mercapto or methacrylo.
4 more elements
Dependencies are inferred from the claim text.