E.i. Dupont De Nemours and Company

L'air Liquide, S.a.

Philip Manos

Richard Allen Hayes

Okan Max Ekiner

Paul E Aldrich

Allan E Nader

Negative photoresists, and electronic devices comprising dielectric polyimide films resulting from such photoresists. The Photoresists comprise polyamic acids, which have been neutralized with tertiary amines containing double bonds of the acrylic family, the amines including acrylamines, alkylacrylamines such as for example methacrylamines, ethacrylamines, and the like. Also methods of making such amines in high purity.

Negative photoresists containing aminoacrylate salts

A reactive oligoimide which is chemically etchable upon crosslinking, and which may serve as an adhesive for bonding at least one layer or film to another layer, preferably a flexible metallic layer to a flexible layer of an etchable polyimide, in order to form a flexible multilayer metal-clad laminate.

Chemically etchable adhesives

A reactive oligoimide, which may serve as an adhesive for bonding at least one layer or film to another layer, preferably a flexible metallic layer to a flexible layer of a polyimide, in order to form a flexible multilayer metal-clad laminate.

Reactive-oligoimide adhesives, laminates, and methods of making the

A process is disclosed for sealing gas separation membranes through treatment with two monomeric materials which condense with each other to form a polymer such as a diamine and a di- or tri- acyl chloride.

Reactive post treatment for gas separation membranes

A multilayer laminate having a metallic layer and a dielectric layer, such as a chemically etchable polyimide, bonded to each other with a chemically etchable adhesive containing phenolic ester groups in the backbone.

Laminates utilizing chemically etchable adhesives

A process for applying and polymerizing a monomeric material to a gas separation membrane to improve the permselectivity of the membrane with respect to at least one pair of gases is disclosed.

Reactive posttreatment for gas separation membranes

Composition useful as hydrocarbon fuel additives of the formula ##STR1## wherein R is a C.sub.9-23 hydrocarbyl group, R' is selected from H and ##STR2## and wherein at least one R' is H, R' is ##STR3## group where X is a divalent hydrocarbyl group of 2 to 34 carbon atoms, n is an integer of 2 or 3 or a combination of 2 and 3, a is an integer of 0-3, b is an integer of 1-2, c is an integer of 0-3 and a+b+c is 2-8.

Acid reaction products of polymeric amines

Process for drying a water-wet permselective membrane by contacting the membrane with water replacement liquid under conditions which result in minimal shrinkage based on the surface tension, viscosity, concentration, molar volume, and temperature of the components of the system.

Solvent exchange drying of membranes for gas separation

Process for drying a water-wet permselective membrane by initially contacting the membrane with water replacement liquid having low surface tension and limited solubility for water.

Gas separation membrane drying with water replacement liquid

Process for drying a water-wet membrane by contacting with a solution of water miscible and water immiscible solvents and then removing the solution.

Membrane drying process

Process for drying a water-wet permselective cellulose ester membrane by contacting the membrane with a single water replacement liquid and vaporizing the liquid from the membrane.

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Wilmington, DE, United States of America

Philip Manos