Abstract: 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 manner such that the disposal degradation rate of the material is accelerated relative to the operative degradation rate of the material.
Type:
Grant
Filed:
February 12, 2001
Date of Patent:
May 25, 2004
Assignee:
Cargill Dow Polymers LLC
Inventors:
Donald M. Bigg, Richard G. Sinclair, Edward S. Lipinsky, John H. Litchfield, Billy R. Allen
Abstract: Crabtree negative organisms such as Kluyveromyces, Pichia, Hansenula and Candida, are used to make selected organic products such as lactic acid. The organisms are cultured in a first culture medium that includes glucose, under conditions that promote cellular respiration. The organisms are then cultured under a second set of conditions that promote production of the selected organic product. The organisms preferably contain an exogenous lactate dehydrogenase gene.
Type:
Grant
Filed:
May 19, 2000
Date of Patent:
November 26, 2002
Assignee:
Cargill Dow Polymers, LLC
Inventors:
Vineet Rajgarhia, Vassily Hatzimanikatis, Stacey Olson, Ting Carlson, John N. Starr, Jeffrey J. Kolstad, Aharon Eyal
Abstract: 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 manner such that the disposal degradation rate of the material is accelerated relative to the operative degradation rate of the material.
Type:
Grant
Filed:
August 16, 1995
Date of Patent:
November 27, 2001
Assignee:
Cargill Dow Polymers, LLC
Inventors:
Donald M. Bigg, Richard G. Sinclair, Edward S. Lipinsky, John H. Litchfield, Billy R. Allen
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