General Electric Company

Donald G Legrand

William V Olszewski

Gina G Vitale

George L Gaines, Jr

George T Seeger

James Edward Pickett

David Michel Dardaris

Gregory Ronald Gillette

Gary R Faler

Kenneth L Lilly

Francois A Lavallee

Blair T Anthony

Frank Axel Hoefflin

George M Banino

Amy Kathleen MacGregor

Albert F Yee

Cecil E Ayers

Multilayer plastic composite articles comprising a thermoplastic resin substrate which can be a polycarbonate, an ABS or ASA resin, a polyphenylene ether or polyphenylene ether/polystyrene blend , an polyester or an admixture of polycarbonate with ABS, ASA or polyester and at least one surface layer comprising a cyloaliphatic polyester or cycloaliphatic polyester blend which is adherent to at least one surface of the substrate. Decorative layers can be located between the substrate and the surface layers.

Multilayer plastic articles

A process for reducing stresses and strains of thermoplastics is described wherein the process includes the step of heating the outer layer of the thermoplastic with a heat source to produce a resin having favorable physical and chemical properties.

Process for annealing thermoplastics

Copolysiloxanecarbonate compositions are prepared by the reaction of a carbonate precursor such as phosgene with a mixture of bisphenols including a spirobiindane bisphenol, at least one of said bisphenols containing polydiorganosiloxane moieties. The reaction may take place in one step or sequentially. The products are characterized by low processing temperature, low orientational birefringence and high ductility.

Spirobiindane copolysiloxanecarbonates and method for their preparation

Safety or impact resistant laminates are disclosed containing a plurality of laminae and at least on composite interlayer said composite interposed between and bonding any two of the laminae and containing one or more thermoplastic sheets from about 1 to about 30 mils in combined thickness bonded one to another and on each external face by a contact or pressure sensitive adhesive layer.

Safety impact resistant laminates having improved interlayer materials

This invention concerns an asymmetric impact resistant laminate having at least four lamina bonded by a plurality of adhesive interlayers and alternating in composition between glass and polycarbonate from a front impact receiving lamina of glass to a back spall resistant and controlled thickness lamina of polycarbonate.

Asymmetric impact resistant laminates

Safety or impact resistant laminates which avoid the application of heat and excessive pressure in their construction comprising a plurality of laminae, at least one interlayer interposed between any two of the laminae, and a sufficient number of adhesive layers, at least one a contact or pressure sensitive adhesive, to bond all the laminae and interlayers.

Method for making safety or impact resistant laminates

The present invention provides an improved penetration resistant laminate comprising: a plurality of internal and forward penetration resistant thermoplastic resinous laminae of from about 100 mils to about 250 mils in thickness; a back polycarbonate lamina opposite the direction of impact or penetration from about 30 to about 220 mils in thickness; a plurality of compatible adhesive interlayers to bond the laminae; and an internal lamina of glass from about 100 mils to about 250 mils in thickness removed from said back polycarbonate lamina by at least one interposed thermoplastic resinous lamina.

Puncture resistant laminate

Thermoplastic laminae are given scratch and mar resistance on an external face as well as protection from incompatible additives of adjacent adhesive layers on an internal face by a single cross-linked protective coating.

Internal protective coatings for sensitive resinous laminae

A method of accelerating tests for the delayed failure of coatings and coated substrates caused by degradation is provided wherein the coated substrate is subjected to a controlled level of strain during testing.

Method for accelerating the failure of coatings

The present invention provides a method and primer composition to increase the adherence of a polydiorganosiloxane-polycarbonate block copolymer lamina or layer to adjoining thermoplastic laminae or layers in a consolidated laminate or composite.

Method for increasing the adhesion of polydiorganosiloxane-polycarbonate

A method of upgrading silicon resin coating compositions is provided wherein the coating compositions are filtered prior to application on a substrate. The filters utilized are 5 microns or less.

Upgrading silicone resin coating compositions

A method is provided for upgrading rock in the form of aggregate, block, shaped stone or concrete structures involving the treatment of such rock with a dilute aqueous solution of polyelectrolyte and polyalkyleneglycol. Treated aggregate, portland cement and bituminous concrete compositions containing such treated aggregate are also provided.

Method of upgrading rock and treated rock obtained therefrom

A method is provided for treating aggregate useful in the production of asphalt concrete. The aggregate is treated with an aqueous solution of a mixture of a polyelectrolyte and a surfactant. The resulting treated aggregate has substantially the same resistance to weatherability as shown by aggregate treated with polyelectrolyte free of surfactant. In addition, aggregate treated with the surfactant-polyelectrolyte mixture and thereafter coated with asphalt exhibits a superior ability to resist asphalt stripping, as compared to aggregate treated with polyelectrolyte free of surfactant.

Method for treating aggregate and products obtained therefrom

A method is provided for upgrading rock in the form of aggregate, block, shaped stone or concrete structures involving the treatment of such rock with a dilute aqueous solution of polyelectrolyte. Enhanced degradation resistance is achieved by further wetting the polyelectrolyte treated rock with a multi-valent ion metallic salt solution. Treated aggregate, portland cement and bituminous concrete compositions containing such treated aggregate are also provided.

A glass-polycarbonate laminate wherein a glass layer is bonded to a polycarbonate layer by a bonding system comprised of an organopolysiloxane-polycarbonate block copolymer bonding agent and a polyvinylidine chloride primer, said primer being applied onto either the glass layer or onto said block copolymer.

Growing community of inventors

Burnt Hills, NY, United States of America

Donald G Legrand