General Electric Company

Basf Wyandotte Corporation

Gaf Corporation

Usv Pharmaceutical Corporation

Rack H Chung

William D Kray

Gary M Lucas

John T Suh

Melvin D Beers

Jeffrey N Barton

Roger T Swiger

August O Liermann

Nai-Yi Wang

A novel, shelf-stable, one-component alkoxy-functional RTV composition having therein as a scavenger an alkoxy-functional silazane compound. The silazane compound can be cyclic or linear and can also be an integrated cross-linking agent.

Novel Scavengers for one-component RTV compositions

In accordance with the present invention, there is provided a one-component alkoxy-functional RTV silicone rubber composition in which all the ingredients are continuously mixed in, generally, a devolatilizing extruder. In a more preferred embodiment, the polyalkoxy diorganopolysiloxane polymer is first formed in a static mixer and then this polymer along with the other ingredients are continuously mixed in a devolatilizing extruder to continuously form a preferred alkoxy-functional one component RTV composition of the instant case.

Process for producing RTV silicone rubber compositions using a

The present invention relates to a shelf stable one component alkoxy-functional RTV composition. In particular, there is utilized a novel end-capping catalyst alone or with a co-catalyst to form a poly-alkoxy terminated diorganopolysiloxane polymer. Such a polymer is formed by reacting a silanol terminal diorganopolysiloxane, either with a polyalkoxy containing silazane cross-linking agent or an integrated cross-linker, scavenger in the presence of the end-capping catalyst.

End-capping catalysts for forming alkoxy-functional one component RTV

An ultraviolet radiation-curable silicone coating composition is disclosed which, when applied to a solid substrate, provides an abrasion-resistant coating firmly adhered thereon. The silicone coating composition is free of residual solvent and free of toxic hydroxy acrylates, and is prepared from the hydrolysis products of acryloxy-functional silanes and/or glycidoxy-functional silanes, colloidal silica and a photoinitiator.

Solventless, ultraviolet radiation-curable silicone coating compositions

A process of coating a solid substrate with an abrasion resistant silicone hard coating composition which is curable upon exposure to ultraviolet radiation under a non-inert atmosphere, such as air, is provided. The coating composition is comprised of a combination of UV light crosslinkable polyfunctional acrylate monomers, SiO.sub.2 in the form of colloidal silica, and acryloxy functional silanes and a selected blend of ketone-type and hindered amine-type photoinitiators.

Process of coating a substrate with an abrasion resistant ultraviolet

Substantially silanol-free, alkoxy functional RTV silicone rubber composition. The silanol and alkoxy groups in the composition are scavenged by the use of scavenging leaving groups which are present either in the cross-linking agent or in a separate compound. The scavenging leaving group in the instant composition is a heterocyclic amide functional group.

Silicon containing lactams

Silane-functionalized ultraviolet screening agent precursors comprise compounds of the formula: ##STR1## wherein R is ##STR2## R.sup.1 is C.sub.1 -C.sub.6 alkyl, R.sup.2 is C.sub.1 -C.sub.6 alkyl or C.sub.2 -C.sub.6 alkanoyl, R.sup.3 is hydrogen or C.sub.1 -C.sub.6 alkoxyl, X is 0,1 or 2, y is 1,2, or 3 and x+y=3. Under ultraviolet radiation the compounds rearrange to the corresponding .alpha.-hydroxybenzophenones which protect substrates, especially transparent plastics, against degradation.

Silane-functionalized ultraviolet screen precursors

A radiation curable coating composition comprising (A) colloidal silica (B) acryloxy or glycidoxy functional silanes (C) non-silyl acrylates and (D) catalylic amounts of UV light sensitive cationic and radical type photoinitiators is provided, which cures to a transparent hard coating exhibiting improved abrasion resistance.

Abrasion resistant ultraviolet light curable hard coating compositions

Compounds of the formulae: ##STR1## wherein, Z and Y are each alkylene containing one to about five carbon atoms in the principal chain or said alkylene substituted with OH, alkanoyloxy, alkoxy, mercapto or alkylmercapto;

Pyrrolidines

A selective process for the preparation of 1-aminoanthraquinones from the corresponding 1-aminoanthraquinone-2-carboxylic acid by decarboxylation in an acid solution in the presence of iron or zinc as a catalyst.

Process for the preparation of 1-aminoanthraquinones

A selective process for the preparation of 1-aminoanthraquinones from the corresponding 1-aminoanthraquinone-2-carboxylic acid by decarboxylation in basic solution in the presence of iron, tin or zinc as a catalyst.

A method of preparing an N-substituted carbamate comprising reacting by heating in sulfolane at a temperature ranging from about 65.degree. C. to about 100.degree. C. (1) an alkali metal cyanate, (2) at least one sulfolane-soluble organic halide of the formula RX wherein X is halogen and R represents a radical selected from the group consisting of alkyl, alkenyl, aralkyl and aralkenyl, and (3) at least one sulfolane-soluble non-aromatic monohydric or polyhydric alcohol, and isolating the N-substituted carbamate thereby produced from the resulting reaction mass.

Preparation of N-substituted carbamates

A selective process for the preparation of 1-aminoanthraquinones by decarboxylation of the corresponding 1-aminoanthraquinone-2-carboxylic acid in an alkaline solution with an alkali metal hydrosulfite.

Growing community of inventors

Clifton Park, NY, United States of America

Rack H Chung