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US 4,736,046 AGranted
.beta.-isocyanato organosilanes
AssigneeThe Dow Chemical Company
InventorKuo Y. Chang
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Abstract
Novel .beta.-isocyanatoethoxy silanes and a method for their preparation is provided in which a 2-oxazolidinone is reacted with a halosilane to form a novel intermediate silyl-2-oxazolidinone product. The intermediate is then exposed to heat under reduced pressure to convert it to a .beta.-isocyanatoethoxy silane. The difunctional monomeric products are useful as starting materials for a variety of silicone and polyurethane prepolymers and polymers.
Claims3
A composition of matter of the formula ##STR6## wherein R.sub.1, R.sub.2, R.sub.3, R.sub.4, and R.sub.5 are hydrogen, alkyl, or aryl;
- and R.sub.6 is hydrogen or an ethylenically unsaturated hydrocarbon functional group.
Dependencies are inferred from the claim text.