Thuan P Dixit

52487210, Sep 28, 1993

Mar 13, 1991

7/668532

Thuan P. Dixit - Midland MI
R. Giles Dillingham - Midland MI
O. Carl Raspor - Saginaw MI

The Dow Chemical Company - Midland MI

C08K 340

524494

Fibers may be prepregged with a dope containing a thermoplastic polybenzazole block copolymer. The prepreg may be contacted with water or another nonsolvent to coagulate the polymer and form a matrix composite.

52178099, Jun 8, 1993

Aug 6, 1990

7/562781

Wen-Fang Hwang - Midland MI
Otto C. Raspor - Saginaw MI
William J. Harris - Midland MI
Thuan P. Dixit - Midland MI

The Dow Chemical Company - Midland MI

B32B 516

428402

Granular compositions which comprise a block copolymer containing blocks of rigid rod polybenzazole polymer and blocks of thermoplastic polybenzazole polymer can be compression molded to provide a molded article having physical properties superior to molded articles made from the thermoplastic polymer alone.

47311266, Mar 15, 1988

Jun 8, 1987

7/059203

Thuan P. Dixit - Midland MI
David V. Dellar - Sanford MI

The Dow Chemical Company - Midland MI

B28B 704

134 38

Compositions comprising thermoplastic polymers having added thereto small amounts of a hydroxymethyl-substituted carboxylic acid are usefully employed to remove accumulated polymeric residues from polymer processing equipment.

52738230, Dec 28, 1993

Jul 2, 1990

7/547650

Wen-Fang Hwang - Midland MI
Otto C. Raspor - Saginaw MI
William J. Harris - Midland MI
Thuan P. Dixit - Midland MI

The Dow Chemical Company - Midland MI

B32B 516

428402

Granular compositions which comprise a block copolymer containing blocks of polybenzazole polymer and blocks of thermoplastic polymer can be compression molded to provide a molded article having physical properties superior to molded articles made from the thermoplastic polymer alone.

46613030, Apr 28, 1987

Jun 11, 1985

6/743238

Pak-Wing S. Chum - Midland MI
Mark A. Barger - Midland MI
Thuan P. Dixit - Midland MI
James E. Schuetz - Midland MI

The Dow Chemical Company - Midland MI

B29C 4704

264171

A method for preparing a polymeric laminate by the reactive coextrusion of functionalized polymers wherein at least one layer is a polymer having functional groups and the adjacent layer is a polymer having coreactive groups which form covalent bonds with the functional groups at the interfacial surfaces. One such functional group can comprise a pendant cyclic imino ether group to form covalent bonds with the coreactive groups. A laminate having a plurality of layers covalently bonded together through the interaction of pendant cyclic imino ether groups and coreactive groups is also provided.

53286545, Jul 12, 1994

Oct 5, 1992

7/956536

Thuan P. Dixit - Midland MI

The Dow Chemical Company - Midland MI

B29C 5502
B29C 5512

2642893

Improved films that contain molecular composites or block copolymers of lyotropic liquid crystalline polymer and thermoplastic polymer can be made by the steps of: (1) washing a dope film, that contains a solvent and the molecular composite or block copolymer; (2) stretching the wet, never-dried film from Step (1) in at least one direction; and (3) drying the film from Step (2). The films have improved mechanical properties and can be used in structural applications.

52876373, Feb 22, 1994

Mar 27, 1992

7/859177

Thuan P. Dixit - Midland MI
Paul T. Louks - Saginaw MI

The Dow Chemical Company - Midland MI

F26B 1300

34158

An apparatus for the constrained drying and/or heat treating of a continuous or roll of, web stock of film. This apparatus includes a mechanism which grasps a film by its edges and moves said film through a drying zone, with said mechanism holding said film taut without substantial stretching of said film in the drying zone, and a means to remove the evaporated solvent from said apparatus. The apparatus is particularly useful for drying film of polybenzoxazole, polybenzothiazole and copolymers thereof, as well as molecular composite films. A method of drying/heat treating film is also disclosed.