General Electric Company

Peter P Policastro

Jonathan D Rich

Pamela K Hernandez

Gary Charles Davis

Thomas Link Guggenheim

Philip J McDermott

John E Hallgren

Herbert S Chao

Karen A Regh

Mark W Davis

Matthew E Langer

Sandra A Swint

Allan R Shultz

Bruce C Johnson

Silicone-polycarbonate block copolymers are provided resulting from the reaction of certain siloxy aromatic imide siloxanes or hydroxyaromatic ester siloxanes which are made by effecting reaction between an organosiloxane having terminal aromatic anhydride groups or aromatic haloacyl groups which are each attached to silicon by silicon arylene linkages with an appropriate bishydroxyarylene compounds or hydroxyarylene amino compound. The aforementioned hydroxyaromatic imide siloxanes or hydroxyaromatic ester siloxanes are then phosgenated with a dihydric phenol or an aromatic bischloroformate. The silicone-polycarbonate block copolymers have been found to be flame retardant and useful as dielectric films and membranes, and as flame retardants in aromatic polycarbonates.

Hydroxyarylestersiloxanes

There is provided by the present invention aromatic polyester-siloxane block copolymers which can be made by effecting the condensation between tetramethyldisiloxane bisbenzoic acid or acid chloride with a dihydric phenol such as bisphenol A or in combination with a mixture of such tetramethyldisiloxane bisbenzoic acid and aromatic acids, such as terephthalic acid or isophthalic acid. The aromatic polyester-siloxane block copolymers can be used as molding compounds, extruded films, in making composite matrix materials and as flame retardants for aromatic polycarbonates.

Aromatic polyester-siloxane block copolymers and method for making

Silicone-polycarbonate block copolymers

Liquid crystalline polyester-siloxanes are provided resulting from the condensation of hydroxybenzoic acid with a mixture of 4,4'-(1,1,3,3-tetramethyl-1,3-disiloxanediyl)bisbenzoic acid and a dihydric phenol such as biphenol or hydroquinone. Terephthalic acid also can be used.

Liquid crystalline polyester siloxanes

Flame retardant aromatic polycarbonate compositions are provided resulting from the use of certain poly(arylene silicon) materials in combination with aromatic polycarbonates. Included among the poly(arylene silicon) materials are aromatic polyester silioxanes, aromatic polyimide siloxanes and aromatic polysilphenylenes.

Flame retardant aromatic polycarbonate blends

Polyimidesiloxane coating compositions resulting from the intercondensation in the presence of methylanisole of various dianhydrides such as 2,2-bis[4-(3,4-dicarboxyphenoxy)phenyl]-propane dianhydride or bis(phthalicanhydride)tetramethyldisiloxane, or mixtures thereof with organic diamine such as toluenediamine, aminoalkyl terminated polydimethylsiloxane or oxydianiline.

Silicone polymides, and method for making

Polyetherimide-silicone copolymer blends are provided having improved resistance to water absorption and a T.sub.g of at least 190.degree. C.

Blends of silicone copolymer and polyetherimide

Polyimide-siloxanes are provided resulting from the intercondensation of organic diamines with organosiloxanes having terminal silyl-substituted aromatic organic anhydride groups. Semiconductor devices and composites using such polyimidesiloxanes as dielectric or passivating layers, films, adhesives and composites are also provided.

Polyimide-siloxanes, method of making and use

A method for making certain silylaryl ketones is provided by acylating a silarylene with an arylacyl halide in the presence of a Friedel-Crafts catalyst. Silicon containing arylketones are also provided.

Acylation of polysilylaromatic organic compounds and products obtained

Mixtures of polyphenylene ethers, lactams such as .epsilon.-caprolactam and lactam polymerization catalysts, preferably basic reagents, may be polymerized. There is preferably also present a lactam polymerization promoter, especially a functionalized polyphenylene ether. Polymerization produces resinous compositions including phenylene etheramide copolymers, especially block and/or graft copolymers. Said resinous compositions may be molded into articles having a number of advantageous properties.

Mixtures including polyphenylene ethers and lactams and resinous

A method is provided for making homogeneous fluid reaction products of aminolactam and organic anhydride substituted polydiorganosiloxane. These fluid reaction products can be used in RIM and laminating applications to make shaped, crosslinked, silicone amide block polymers.

Method for making crosslinked silicone-polyamide block polymers

Silyl polyamides are prepared by reacting a silyl anhydride or imide, preferably a polysiloxane anhydride, with a lactam such as .epsilon.-caprolactam. The preferred materials are in the nature of A-B or A-B-A block polyamide polysiloxanes. They may be used as elastomers and adhesives or, in certain instances, in the formation of thermoset compositions.

Silyl polyamides and method for their preparation

Silicone-polyamide block polymers are provided which result from the reaction of lactam and silicone having chemically combined arylacyl or arylisocyanato groups. Silicone having terminal aryllactam groups useful for making silicon-polyamide also are provided.

Silicone-polyamide block polymers, lactam terminated organosiloxane and

Crosslinkable polyamide blends are provided of lactam, a silicon substituted lactam and a base polymerization catalyst. The crosslinkable blends can be reinforced and converted to polyamide parts by standard molding techniques.

Silicon-lactam blends and products obtained therefrom

A method is provided for making polyamides and silicone polyamide block and graft polymers by heating a mixture of a lactam in the presence of a silicon containing material, such as a silyl lactam, and a mixture of fluoride ion catalyst and a promoter such as an organic isocyanate. The resulting polyamides or silicon polyamide block or graft polymers can be utilized to make silicone elastomeric adhesives or injection moldable polyamides.

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Niskayuna, NY, United States of America

Peter P Policastro