John E Corbett

US Patent:

43072020, Dec 22, 1981

Filed:

Aug 21, 1980

Appl. No.:

6/179582

Inventors:

John M. Corbett - Newark OH

Assignee:

The Dow Chemical Company - Midland MI

International Classification:

C08J 900

US Classification:

521 79

Abstract:

Anhydride-containing thermoplastic polymers are foamed with ammonium carbonate, ammonium bicarbonate and ammonium oxalate to provide foams having good heat distortion characteristics and undesirable organic blowing agents are avoided.

US Patent:

43060366, Dec 15, 1981

Filed:

Aug 21, 1980

Appl. No.:

6/179576

Inventors:

John M. Corbett - Newark OH

Assignee:

The Dow Chemical Company - Midland MI

International Classification:

C08J 900
C08F 2204
C08F 2206

US Classification:

521147

Abstract:

Anhydride-containing thermoplastic polymers are foamed with ammonium carbonate, ammonium bicarbonate and ammonium oxalate to provide foams having good heat distortion characteristics and undesirable organic blowing agents are avoided.

US Patent:

44540868, Jun 12, 1984

Filed:

Jun 18, 1982

Appl. No.:

6/389836

Inventors:

John M. Corbett - Newark OH
Charles R. Bearden - Midland MI

Assignee:

The Dow Chemical Company - Midland MI

International Classification:

B29D 2700

US Classification:

264 53

Abstract:

High quality plastic foam and the like expanded products and articles are made by incorporating a blowing agent in an acid-containing alkenyl aromatic polymer, such as a copolymer of styrene and acrylic acid; extruding while cross-linking the polymer with a polyfunctional cross-linking agent.

US Patent:

41102746, Aug 29, 1978

Filed:

Oct 17, 1977

Appl. No.:

5/842720

Inventors:

John M. Corbett - Newark OH
Frederick J. Dechow - Thornville OH

Assignee:

The Dow Chemical Company - Midland MI

International Classification:

C08J 900
C08J 908

US Classification:

521157

Abstract:

Cellular resin bodies having apparent density less than about 30 pounds per cubic foot, where the resin has highly crosslinked three-dimensional ethylenic polymer structure having amic acid groups and/or cyclic imide linkages, are made by reaction of polyisocyanates with certain polymerizable ethylenically unsatured dicarboxylic acid cyclic anhydrides illustrated by maleic anhydride, and water. Mixture of the reactants and heating cause chemical interaction, evolution of carbon dioxide, ethylenic polymerization of intermediate reaction product, crosslinking, foaming and hardening of the resin. Cell formation is caused by carbon dioxide and water vapor in the resin reaction product. Resin foam products are infusible and insoluble in usual solvents and resist ignition and burning in air.

US Patent:

45446822, Oct 1, 1985

Filed:

Aug 24, 1984

Appl. No.:

6/643945

Inventors:

John M. Corbett - Newark OH
Fred W. Neumann - Midland MI

Assignee:

The Dow Chemical Company - Midland MI

International Classification:

C08F 1400

US Classification:

521142

Abstract:

A flame retardant polymeric composition comprising a monoalkenyl aromatic polymer having polymerized therein from about 5 to about 25 mole percent of an imide having appended, to the nitrogen atom, a bromine substituted aliphatic hydrocarbon radical. The composition is formed by melt blending a copolymer of a monoalkenyl aromatic monomer and an ethylenically-unsaturated anhydride with a brominated, primary aliphatic amine.

US Patent:

41295307, Dec 12, 1978

Filed:

Dec 19, 1977

Appl. No.:

5/861938

Inventors:

Chung P. Park - Pickerington OH
John M. Corbett - Newark OH
Warren H. Griffin - Midland MI

Assignee:

The Dow Chemical Company - Midland MI

International Classification:

C08J 914

US Classification:

521 79

Abstract:

Low density, closed cell, soft foam products having dimensional stability are made from ethylenic resins having low stiffness, especially comprising copolymers consisting essentially of ethylene and monoethylenically unsaturated non-ionic comonomers, by release to lower pressure of a flowable, foamable gel under pressure, e. g. , by extrusion foaming, wherein the gel comprises the ethylenic polymer and a volatile mixed blowing agent. The starting polymers are preferably copolymers of ethylene and vinyl acetate having stiffness less than about 20,000 psi. The mixed blowing agents are particularly characterized as mixtures of dichlorodifluoromethane and at least one fluorocarbon constituent A, as defined. Exemplary mixtures contain (I) dichlorodifluoromethane and (II) from 35 to 50 percent chloropentafluoroethane, octafluoropropane or octafluorocyclobutane based on the mixtures of I and II.

US Patent:

41014677, Jul 18, 1978

Filed:

Jan 27, 1977

Appl. No.:

5/763374

Inventors:

Chung Poo Park - Pickerington OH
Warren H. Griffin - Midland MI
John M. Corbett - Midland MI

Assignee:

The Dow Chemical Company - Midland MI

International Classification:

C08J 914

US Classification:

521 79

Abstract:

Low density, closed cell, soft foam products having dimensional stability are made from ethylenic resins having low stiffness, especially comprising copolymers consisting essentially of ethylene and monoethylenically unsaturated non-ionic comonomers, by release to lower pressure of a flowable, foamable gel under pressure, e. g. , by extrusion foaming, wherein the gel comprises the ethylenic polymer and a volatile mixed blowing agent. The stating polymers are preferably copolymers of ethylene and vinyl acetate having stiffness less than about 20,000 psi. The mixed blowing agents are particularly characterized as mixtures of at least one fluorocarbon constituent I and at least one fluorocarbon constituent II, as defined. Exemplary mixtures contain (I) 1,2-dichloro-1,1,2,2-tetrafluoroethane and (II) from 25 to 50 percent chloropentafluoroethane, octafluoropropane or octafluorocyclobutane based on the mixtures of I and II.

Author:

John Corbett

ISBN #:

0201416948

Author:

John Corbett

ISBN #:

0719529131

Author:

John Corbett

ISBN #:

0748608265

Author:

John Corbett

ISBN #:

0748615962

Author:

John Corbett

ISBN #:

0822314568

Author:

John Corbett

ISBN #:

0822314738

Author:

John Corbett

ISBN #:

0891417850

Author:

John Corbett

ISBN #:

0891418350