The Dow Chemical Company

Dow Global Technolgoies LLC

Mitchell G Dibbs

Robert L McGee

Edward Otto Shaffer, Ii

Robert A Devries

Ying Hung So

Michael J Radler

Brian R Maurer

Shaoguang Feng

Ray E Drumright

Daniel J Murray

David J Brennan

Michael Inbasekaran

James P Godschalx

Dean M Welsh

Kenneth L Foster

Q Jason Niu

Philip C Yang

Paul Henson Townsend

Richard P DeCaire

The invention is a curable cyclobutarene based polymer comprising acid functional pendant groups. The cured polymer displays excellent qualities of toughness, adhesion, dielectric constant, and low stress. The preferred system is soluble in an aqueous base and can be used to generate patterned films with excellent resolution without the need to handle organic developer solvents.

Acid functional polymers based on benzocyclobutene

The present invention relates to a method for preparing polymeric films, preferably electroactive films, with enhanced physical properties by the steps of applying to a substrate a solution of a polymer containing pendant labile solubilizing groups, then removing the solvent and a sufficient concentration of the labile solubilizing groups render the polymer less soluble in the solvent than before the labile groups were removed. It is believed that the removal of pendant soluble groups a) permits optimization of the semiconducting backbone for charge transport performance, b) allows direct control of microstructure in the final film, and c) renders the final film more robust during subsequent process steps needed to construct multilayer devices.

Method of preparing an insoluble polymer film on a substrate from a soluble polymer containing labile solubilizing groups

Intrinsically low birefringent molding polymers having a molten stress optic coefficient that is greater than or equal to -1000 Brewsters and less than or equal to +1000 Brewsters, a glass transition temperature of at least 140.degree. C., and a water absorption (A.sub.H.sbsb.2.sub.O) according to ASTM D570-81 after 24 hours immersion in water at 23.degree. C. of less than 0.25 percent comprising in polymerized form at least one structural component providing a positive melt homopolymer stress optic coefficient and at least one other structural component providing a negative melt homopolymer stress optic coefficient.

Intrinsically low birefringent molding polymers and optical storage

Optically isotropic blends comprising styrene/acrylonitrile copolymers containing from 18 to 32 percent acrylonitrile and methyl methacrylate/glutarimide resins containing from 10 to 50 weight percent methyl methacrylate and having stress optical coefficient of between -500 Brewsters and +500 Brewsters are usefully employed in the preparation of molded objects having reduced birefringence.

Optically isotropic blends of styrene/acrylonitrile and methyl

A comonomer composition of an aromatic polycyanate and an aromatic monocyanate substituted at each position ortho to the cyanate group, and a polytriazine copolymer derived therefrom.

Aromatic polycyanate/monocyanate comonomer compositions and

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Midland, MI, United States of America

Mitchell G Dibbs