General Electric Company

Other

Abe Berger

Terry G Selin

Melvin D Beers

George P De Zuba

Stephen B Hamilton

Peter C Juliano

Organofunctional-silicon hydrides having, in addition, a halo substituent are provided. These compounds, of generic formula:

Organofunctional-silicon materials

A copolymer which is the reaction product of a tetracarboxylic acid dianhydride, and organic diamine and a di(aminoalkyl) poly siloxane where the di(aminoalkyl) poly siloxane constitutes 18-45 mole percent of the total amine requirement of the polymer and is applicable as a conformal protective coating for electronic devices.

Polyimide containing silicones

This disclosure relates to novel silicone compounds containing alkenyl thio functional groups and their method of preparation. These compounds are useful as adhesion promoters for self-adhering silicone rubbers capable of bonding to inorganic substrates especially metals. The silicone rubber-metal composites have particular applications in semiconductor devices and in ignition systems for automobiles.

Alkenyl thioalkyl silicones and method of preparation

A copolymer which is the reaction product of a tetracarboxylic acid dianhydride, and organic diamine and a di(aminoalkyl) poly siloxane where the di(aminoalkyl) poly siloxane constitutes 18 - 45 mole percent of the total amine requirement of the polymer and is applicable as a conformal protective coating for electronic devices.

Polyimide containing silicones as protective coating on semiconductor

A process is provided for making polyimides having chemically combined polydiorganosiloxane blocks. An excess organic dianhydride is contacted with an organic diamine in a refluxing halogenated aromatic hydrocarbon solvent in the presence of an acid catalyst to produce an intermediate polyimide product. The temperature of the mixture is thereafter lowered, and amino-terminated polydiorganosiloxane is added to the mixture to effect the incorporation of polydiorganosiloxane blocks into the polyimide. There is produced clear polyimide-polydiorganosiloxane block polymer useful as an insulating layer on semi-conductor devices.

Process for making polyimide-polydiorganosiloxane block polymers

Novel organofunctional (ketoximino) silanes, such as acetoxyethyl tris(methylethylketoximine)silane, are provided which are useful as crosslinking agents chain-extending agents and chain-terminating agents in room temperature vulcanizable silicone elastomers. The room temperature vulcanizable compositions containing these novel organofunctional tris(ketoximino) silanes, which are stable free flowing fluids in the absence of moisture but cure to the rubbery, solid elastic state upon exposure to moisture, the method of making the same and the cured products thereof are also provided. The present room temperature vulcanizable compositions are particularly well suited for applications in conjunction with concrete (cement) substrates.

Novel organofunctional (ketoximino) silanes and room temperature,

Self-bonding, heat-curable silicone rubber composition comprising (a) a diorganopolysiloxane polymer (b) a curing catalyst and (c) a compound of the formula, ##EQU1## where R.sup.6 is selected from alkyl radicals and hydrogen, Z is seleccted from COO, phenylene, CO, CONH and CON-R.sup.2, R.sup.2 is selected from monovalent hydrocarbon radicals and halogenated monovalent hydrocarbon radicals, R.sup.5 is selected from unsaturated monovalent hydrocarbon radicals and unsaturated halogenated monovalent hydrocarbon radicals, G.sup.1 is selected from hydrogen, R.sup.2 radicals and R.sup.5 radicals. There may also be used in the above composition a process aid, a filler, and other ingredients commonly used in heat-curable silicone rubber compositions. In place of the maleate set forth above, and/or in addition to the maleate set forth above, there may be used a silylmaleate.

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Schenectady, NY, United States of America

Abe Berger