Ppg Industries, Inc.

Alliedsignal Inc.

Honeywell International Inc.

Johnson Matthey Inc.

Johnson Matthey Electronics, Inc.

Michael M Chau

Wen-Hsuan Chang

Charles Smith

Rostyslaw Dowbenko

Karl F Schimmel

Debra L Singer

David T McKeough

Joseph M Makhlouf

Roger Alan Emigh

Nancy F Dean

William G Light

Gregory J McCollum

Roger M Christenson

Richard M Nugent, Jr

J Alden Erikson

Robert M Piccirilli

Raymond F Schappert

A Xavier Swamikannu

Anthony C Palermo

Masyood Akhtar

Hong C Chu

David Savage

Donald A Burkhart

Robert J Lipinski

James R Freid

Described is an electronic device having a compliant fibrous interface. The interface comprises a free fiber tip structure having flocked thermally conductive fibers embedded in an adhesive in substantially vertical orientation with portions of the fibers extending out of the adhesive and an encapsulant between the portions of the fibers that extend out of the adhesive and the fiber's free tips.

Electronic device having fibrous interface

A composition suitable for use as an underfill for an interconnection between a semiconductor device and a substrate, as a semiconductor device encapsulant, a dam, an adhesive for direct chip attachment, and as an electrical connection for semiconductor device and a substrate. The composition contains about 40 to 90 wt. % of an electrically conductive or non-conductive filler and a cyanate ester and epoxy resin component. The cyanate ester/epoxy resin component comprises about 10 to 70 wt. % cyanate ester material, about 30 to 90 wt. % of epoxy resin, about 0.1 to 1.5 wt. % metal chelate/amine solid curing catalyst and about 0.1 to 5 wt. % of a coupling agent.

Materials for semiconductor device assemblies

A lightweight composite lid for a package containing a semiconductor device formed of a porous ceramic body filled with a material having a thermal conductivity greater than air.

Metal-ceramic composite lid

A semipermeable membrane suitable for reverse osmosis applications is prepared by interfacially reacting on a support an aromatic polyamine containing at least three and, preferably, four aromatic nuclei with a polyfunctional amine-reactive compound such as an aromatic polyacyl halide.

Chlorine-tolerant, thin-film composite membrane

Polyvinyl chloride plastisol composition suitable as a sealant

High flux semipermeable membranes which comprises the polymerized reaction product within and/or on a porous support backing material may be prepared by contacting the porous support such as a polysulfone with an aqueous solution of a polyamine which may, if so desired, contain a polar aprotic solvent not reactive with the amines, a polyhydric compound and an acid acceptor. The surface of the coated support is freed of excess solution and thereafter contacted with an organic solution of a polyacyl halide for a period of time sufficient to form a polymerized reaction product within and/or on the support material. The resulting composite is then treated with a hydroxy polycarboxylic acid, polyaminoalkylene polycarboxylic acid, suffonic acid, amine salts of acids, amino acid, amino acid salt, polymeric acid and inorganic acid, before drying of the membrane. This will enable the membrane to be stored in a dry manner prior to use thereof in a separation process. The resultant membrane composite may be used in separation processes such as desalination of brackish or sea water or the softening of domestic hard water.

Dry high flux semipermeable membranes

High flux semipermeable membranes which comprise a polymerized reaction product within and/or on a porous support may be prepared by contacting the porous support such as a polysulfone sheet with an aqueous solution of an polyamine, said aqueous solution containing a polar aprotic solvent not reactive with amines and optionally an acid acceptor. The surface of the coated support is dried to the touch and then contacted with an organic solution of an polycarboxylic acid halide for a period of time sufficient to form a polymerized reaction product within and/or on the surface of the support material. The resulting composite may be post treated by washing with an alkaline compound. The resultant membrane composite may be used in separation processes such as the desalination of brackish or seawater, or the softening of domestic hard water.

High flux semipermeable membranes

This invention discloses a modified rosin soap which is an ammonia-neutralized esterification product of a Diels-Alder adduct of a monomeric rosin and an alpha, beta-unsaturated carboxylic compound. The use of the modified rosin as an emulsifier and/or a stabilizer in the preparation of an acrylic latex and the use of the acrylic latex in ink formulations are also disclosed.

Modified rosin soaps for acrylic emulsions

A polymerizable ethylenically unsaturated urea urethane polymer dispersed in a polymerizable ethylenically unsaturated compound is prepared by a process which comprises reacting a polyisocyanate, at least a portion of which is a diisocyanate, with a polyfunctional amine containing primary and/or secondary amino groups in the presence of:

Polyurea-polyurethane acrylate dispersions

A composition of matter contains as a principal component a material which acts as an ultraviolet light stabilizer. The ultraviolet light stabilizer is formed from the reaction of (a) a methylol or alkoxy alkyl-containing material, and (b) an alkyl substituted piperidine containing material which is represented by the following structural formula: ##STR1## R' is hydrogen or C.sub.1 to C.sub.6 alkyl, R.sub.10 is hydrogen or methyl,

Modified piperidines as ultraviolet light stabilizers

A polymeric reaction product, a process for its preparation and a coating composition containing the reaction product as a binder are described. The polymeric reaction product is prepared by the vinyl addition polymerization of a vinyl monomer component of which at least 50 percent by weight is an active hydrogen-containing vinyl monomer in the presence of a polymeric diluent. The rate of polymerization is controlled such that the amount of unreacted vinyl monomer, on the average, does not exceed 10 percent by weight of the total weight of the reaction mixture.

Preparation of low molecular weight polymers by vinyl addition

Disclosed herein is a poly(urethane-urea) which is prepared by reverse-addition of an isocyanate-terminated prepolymer to an organic medium containing an alcoholic solvent and a chain extender comprising at least two isocyanate-reactive active hydrogen groups consisting essentially of amino groups.

Non-aqueous poly(urethane-urea)

A high solids, organic solvent based, sprayable coating composition which is capable of acid catalyzed crosslinking is composed of an active hydrogen-containing resin, a curing agent present externally and/or internally as a part of the active hydrogen-containing resin, and a catalytic amount of a non-ionic ester of a sulfonic acid. The sulfonic acid ester is represented by the following structural formula: ##STR1## wherein: Z is a radical selected from the group consisting of amino and an organic radical, said organic radical being connected to the sulfur atom by a carbon atom; ##STR2## C.sub.3 -C.sub.20 cycloalkyl; and R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5 are independently hydrogen or an organic radical. These groups can be particularly described as follows:

Aminoplast curable coating compositions containing sulfonic acid esters

A high solids, organic solvent based, sprayable coating composition which is capable of acid catalyzed crosslinking is composed of an active hydrogen-containing resin, a curing agent present externally and/or internally as a part of the active hydrogen-containing resin, and a catalytic amount of a non-ionic, saturated or unsaturated organic polycyclic ester of a sulfonic acid.

Growing community of inventors

San Diego, CA, United States of America

Michael M Chau