Amoco Corporation

Union Carbide Corporation

Robert J Cotter

Hugh C Gardner

Lloyd Mahlon Robeson

James E Harris

George L Brode

George T Kwiatkowski

James H Kawakami

Michael J Michno, Jr

Robert Barclay, Jr

Stephen B Rimsa

Michael J Keogh

Louis M Maresca

Markus Matzner

Robert A Clendinning

Charles N Merriam

Selvaraj Savariar

William D Heitz

Mohammad J El-Hibri

Described herein are resinous compositions comprising a particular cycloaliphatic epoxy resin and the adduct of these epoxy resins with an aromatic active hydrogen-containing compound. These compositions afford unreinforced castings with higher heat deflection temperatures, faster cure rates, and reduced water uptake than similar compositions containing epoxy adducts made from aliphatic polyols.

High modulus epoxy resin systems

The invention describes a novel process for the preparation of polycarbonate and/or polyarylate block copolymers with poly(aryl ethers). The process is comprised of the steps:

Process for the preparation of polycarbonate and/or polyarylate block

Described herein are novel polyarylates derived from mixtures of terephthalic and isophthalic acids, hydroquinone and 4,4'-dihydroxydiphenyl sulfone. The instant polyarylates exhibit excellent stress-crack resistance in a wide variety of solvents. Moreover, the materials display very good mechanical and thermal properties.

Copoly arylate from hydroquinone and dihydroxy diphenyl sulfone

Described herein are circuit board substrates prepared from certain poly(aryl ethers) based on 4,4'-dichlorodiphenyl sulfone.

Novel poly(aryl ethers) useful for molding into a circuit board substrate

Described herein are novel poly(aryl ethers) based on 2,5-di-t-butylhydroquinone. These poly(aryl ethers) have excellent high temperature, oxidative and chemical resistance, as well as good melt-fabricability.

Novel poly(aryl ethers)

Polyarylether sulfones useful for molding into a circuit board substrate

Described herein is a composition which contains a specific group of hardeners, an epoxy resin and a thermoplastic polymer. When combined with a structural fiber the composition produces composites which have improved impact resistance, improved tensile properties and high compressive properties.

Impact resistant matrix resins for advanced composites

This invention relates to moldable polycarbonate compositions and in particular to moldable polycarbonates which have ordered, alternating repeating units derived from bis-(3,5-dimethyl-4-hydroxyphenyl)sulfone (TMBS) and 2,2-bis-(4-hydroxyphenyl)propane (Bisphenol A) dihaloformate, or ordered, alternating repeating units derived from bis-(3,5-dimethyl-4-hydroxyphenyl) sulfone (TMBS) dihaloformate and a bisphenol compound such as 2,2-bis-(4-hydroxyphenyl)propane (Bisphenol A). Such polycarbonate exhibit improved hydrolytic stability and also excellent processability in molding applications.

Ordered, alternating sulfone polycarbonate composition

Described herein are compositions which contain a specific group of oligomeric diamine hardeners and epoxy compounds which when combined with structural fibers produce composites which have improved tensile properties, high compressive strengths, and improved impact resistance. These compositions also exhibit low moisture absorption.

Epoxy compositions containing oligomeric diamine hardeners and high

This invention relates to moldable polycarbonate compositions and in particular to moldable polycarbonates which have ordered alternating repeating units derived from bis-(3,5-dimethyl-4-hydroxyphenyl)sulfone (TMBS) and 2,2-bis-(4-hydroxyphenyl)propane (Bisphenol A) dihaloformate, or ordered, alternating repeating units derived from bis-(3,5-dimethyl-4-hydroxyphenyl) sulfone (TMBS) dihaloformate and a bisphenol compound such as 2,2-bis-(4-hydroxyphenyl)propane (Bisphenol A). Such polycarbonates exhibit improved hydrolytic stability and also excellent processability in molding applications.

Polycarbonates having improved hydrolytic stability

The invention comprises a homogeneous liquid mixture of (a) a half ester of an organic polyol characterized by the following empirical formula: ##STR1## wherein n is a number having an average value of about 1.8 to less than about 4, m is equal to the free valence of R less the average value of n, R is the hydroxyl-free residue of an organic polyol which contained from 2 to 4, inclusive, hydroxyl groups, OH, in formula (I), (b) maleic anhydride, (c) an ethylenically unsaturated monomer which forms a liquid homogeneous mixture with and is copolymerizable with the half ester and maleic anhydride, and (d) a basic compound.

Half esters of organic polyols and a process for their production

This invention is directed to a half ester characterized by the following empirical formula: ##STR1## wherein n is a number having an average value of 1.7 to 2, and m is equal to 2-n. Also described herein is a composition comprising said half ester, maleic anhydride and an ethylenically unsaturated monomer, wherein at least 75 mole percent of the half ester is in the maleate form.

Novel bis(half ester) and compositions containing the same

Sulfur dioxide can be adsorbed from gas mixtures using cross-linked, water-insoluble polymers of N-glycidylpiperazine or N-glycidyl polyalkylpiperazines as the adsorbents.

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Bernardsville, NJ, United States of America

Robert J Cotter