1
Richard G Sinclair: Blends of polyactic acid. BioPak Technology, Sheridan Ross & McIntosh, June 1, 1993: US05216050 (274 worldwide citation)

An environmentally degradable composition comprising blends of a physical mixture of poly(lactic acid), and a polymer selected from the group consisting of poly(ethylene terephthalate), a polymer or copolymer of styrene, ethylene, propylene, vinyl chloride, vinyl acetate, alkyl methacrylate, alkyl a ...


2
Richard G Sinclair, Edward S Lipinsky: Degradable polymer composition. Ecopol, Sheridan Ross & McIntosh, March 26, 1996: US05502158 (223 worldwide citation)

Disclosed are degradable materials which include a nontoxic hydrolytically degradable polymer and nontoxic modifier, wherein the modifier is compatible with the polymer and the modifier is nonvolatile and nonfugitive. Also disclosed are processes for forming the various degradable materials, which i ...


3
Steven R Erbstoesser, Claude E Cooke Jr, Richard G Sinclair, Michael M Epstein: Method for reducing the permeability of subterranean formations. Exxon Production Research Co, K C Johnson, E Eugene Thigpen, June 14, 1983: US04387769 (219 worldwide citation)

The present invention relates generally to the composition and method for reducing the permeability of subterranean formations penetrated by a wellbore. The composition of the present invention comprises a wellbore fluid having dispersed therein a fluid loss control agent comprising a polyester poly ...


4
Steven R Erbstoesser, Claude E Cooke Jr, Richard G Sinclair, Michael M Epstein: Use of degradable ball sealers to seal casing perforations in well treatment fluid diversion. Exxon Production Research Company, Hubert E Cox, Gary D Lawson, January 5, 1988: US04716964 (218 worldwide citation)

Plugging perforations in casing in a wellbore penetrating a subterranean formation using degradale ball sealers. The ball sealer used is composed of a polyester polymer which is substantially insoluble in the wellbore fluid. The polymer degrades in the presence of water at an elevated temperature to ...


5
Richard G Sinclair, Edward S Lipinsky: Degradable polymer composition. Chronopol, Sheridan Ross P C, November 10, 1998: US05834582 (197 worldwide citation)

Disclosed are degradable materials which-include a nontoxic hydrolytically degradable polymer and nontoxic modifier, wherein the modifier is compatible with the polymer and the modifier is nonvolatile and nonfugitive. Also disclosed are processes for forming the various degradable materials, which i ...


6
Donald M Bigg, Richard G Sinclair, Edward S Lipinsky, John H Litchfield, Billy R Allen: Degradation control of environmentally degradable disposable materials. Cargill Dow Polymers, Sheridan Ross P C, November 27, 2001: US06323307 (189 worldwide citation)

The present invention is directed to a method for reducing waste accumulation by using an environmentally degradable disposable material. The disposable material, which includes a hydroxycarboxylic acid-containing polymer, degrades hydrolytically during operative and disposal stages in a controlled ...


7
Richard G Sinclair, Edward S Lipinsky, James D Browning, Donald Bigg, Thomas A Rogers: End use applications of biodegradable polymers. Ecopol, Sheridan Ross & McIntosh, August 22, 1995: US05444113 (175 worldwide citation)

Disclosed are products made of degradable materials which include a hydrolytically degradable polymer. The degradable materials can be internally or externally modified. The internally modified polymer composition has polymers modified by the use of comonomers having a relatively high molecular weig ...


8
Steven R Erbstoesser, Claude E Cooke Jr, Richard G Sinclair, Michael M Epstein: Composition for reducing the permeability of subterranean formations. Exxon Production Research Co, James J Riley Jr, Marc L Delflache, July 2, 1985: US04526695 (169 worldwide citation)

The present invention relates generally to the composition and method for reducing the permeability of subterranean formations penetrated by a wellbore. The composition of the present invention comprises a wellbore fluid having dispersed therein a fluid loss control agent comprising a polyester poly ...


9
Richard G Sinclair: Copolymers of D,L-lactide and epsilon caprolactone. Gulf Oil Corporation, August 30, 1977: US04045418 (139 worldwide citation)

Copolymers which can be fabricated into films, fibers and structural shapes are prepared by copolymerizing an optically inactive lactide, i.e., D,L-lactide, and epsilon caprolactone in the presence of a tin ester of a carboxylic acid. A copolymer prepared from 85 parts by weight of D,L-lactide and 1 ...


10
Richard G Sinclair: Copolymers of L-(-)-lactide and epsilon caprolactone. Gulf Oil Corporation, November 8, 1977: US04057537 (130 worldwide citation)

Copolymers which can be fabricated into films, fibers and structural shapes are prepared by copolymerizing an optically active lactide, i.e., L-(-)-lactide, and epsilon caprolactone in the presence of a tin ester of a carboxylic acid. A copolymer prepared from 75 parts by weight of L-(-)-lactide and ...