David W Simpson

US Patent:

6346599, Feb 12, 2002

Filed:

May 10, 2000

Appl. No.:

09/486255

Inventors:

Daniel Goldberg - Bordentown NJ
Sandra A. Kupperblatt - Flanders NJ
Robert F. Eaton - Belle Mead NJ
Wong F Ark - Bridgewater NJ
David M Simpson - Murfreesboro TN

Assignee:

Union Carbide Chemicals Plastics Technology Corporation - Danbury CT

International Classification:

C08G 6308

US Classification:

528354, 528355, 528357, 428480, 428338, 428339

Abstract:

Lactone copolymers are disclosed which are polymerized from a first lactone monomer and a second amorphous monomer which is effective to suppress the crystallization of the copolymer. It is disclosed that suppression of the crystallization can provide enhanced mechanical properties in films made from the copolymers. As a result, films prepared from the copolymers of the present invention can have properties rendering them suitable for use as biodegradable trash bags as well as for other uses.

US Patent:

40479633, Sep 13, 1977

Filed:

Jun 17, 1976

Appl. No.:

5/697072

Inventors:

David A. Simpson - Wilmington DE

Assignee:

Hercules Incorporated - Wilmington DE

International Classification:

G03C 168

US Classification:

96115R

Abstract:

It has been found that printing elements can be prepared from a water-soluble photopolymer composition comprising (1) a water-soluble thermoplastic ethylene oxide copolymer containing 50-96% ethylene oxide, (2) from about 0. 5 to about 25% by weight based on the ethylene oxide copolymer of an ethylenically unsaturated monomer having its unsaturation in the form of at least two ##STR1## groups, wherein R is hydrogen or a C. sub. 1 -C. sub. 3 alkyl group, and (3) from about 0. 1 to about 10% by weight based on the ethylene oxide copolymer of a photoinitiator thermally stable at temperatures up to about 150. degree. C. The above described photopolymer composition can be thermoformed, such as by extrusion or compression molding.

US Patent:

42726107, Jun 9, 1981

Filed:

Feb 19, 1980

Appl. No.:

6/122162

Inventors:

David S. Breslow - Wilmington DE
David A. Simpson - Wilmington DE

Assignee:

Hercules Incorporated - Wilmington DE

International Classification:

G03C 168

US Classification:

430302

Abstract:

The invention concerns a process for making photographic images. The process involves the photooxidation of a film of a photosensitive composition containing certain essential components to form peroxides in the exposed areas of the film, and decomposition of the peroxides to form a crosslinked polymer in the exposed areas. Essential to the composition are an ethylenically unsaturated component capable of forming a crosslinked polymer, and an oxidizable component containing allylic hydrogens.

US Patent:

42712599, Jun 2, 1981

Filed:

Jun 11, 1980

Appl. No.:

6/158198

Inventors:

David S. Breslow - Wilmington DE
David A. Simpson - Wilmington DE

Assignee:

Hercules Incorporated - Wilmington DE

International Classification:

G03C 168

US Classification:

430286

Abstract:

The invention concerns photosensitive compositions. The composition contains certain essential components which form peroxides when exposed to light. Essential to the composition are an ethylenically unsaturated component capable of forming a high polymer by addition polymerization or crosslinking, an oxidizable component containing allylic hydrogens, and a photooxygenation sensitizer.

US Patent:

55975739, Jan 28, 1997

Filed:

Mar 14, 1995

Appl. No.:

8/405438

Inventors:

Balreddy Kamireddy - Hockessin DE
Michael J. Darsley - Rockville MD
David M. Simpson - Adelphi MD
Richard J. Massey - Rockville MD

Assignee:

Igen, Inc. - Gaithersburg MD

International Classification:

A61K 3902
A61K 3170
C07H 1702

US Classification:

4242341

Abstract:

The present invention relates to novel amidine components of formula (II): ##STR1## A method for eliciting antibodies in an animal which bind to Lipid A or LPS comprising administering to the animal as an immunogen a composition comprising such a compound is also disclosed.

US Patent:

62973495, Oct 2, 2001

Filed:

Feb 24, 2000

Appl. No.:

9/486256

Inventors:

Daniel Goldberg - Bordentown NJ
Sandra A. Kupperblatt - Flanders NJ
Robert F. Eaton - Belle Mead NJ
Wong F Ark - Bridgewater NJ
David M Simpson - Murfreesboro TN

Assignee:

Union Carbide Chemicals & Plastics Technology Corporation - Danbury CT

International Classification:

C08G 6902
C08G 6308

US Classification:

528310

Abstract:

Condensation copolymers are disclosed which are polymerized from a first monomer which is capable of polymerization by condensation polymerization, e. g. , ring opening lactone polymerization, and a second monomer which is effective to suppress the crystallization of the copolymer. It is disclosed that suppression of the crystallization can provide enhanced mechanical properties in films made from the copolymers. As a result, films prepared from the copolymers of the present invention can have properties rendering them suitable for use as biodegradable trash bags as well as for other uses.