Polysaccharide compositions

Details Polysaccharide compositions Polysaccharide compositions

1987-02-02

1989-06-13

Terapane, John F.

Compositions

Chemically interactive reactants

Organic reactant admixed with inorganic reactant

127 29, 127 37, 71 28, 426 69, 502159, 502167, 252545, C09K 300, C13K 102, C05C 900, A23K 122

Patent

active

048390887

ABSTRACT:
Polysaccharides are at least partially hydrolyzed by contact with a composition containing urea, sulfuric acid, and water in which the urea/sulfuric acid molar ratio is less than 2. Such proportions of urea and sulfuric acid assure the presence of the monourea adduct of sulfuric acid. The polysaccharide can be hydrolyzed to an extent sufficient only to hydrate the polysaccharide to produce a hydrated polysaccharide such as hydrated cellulose, or it can be completely hydrolyzed to its constituent monosaccharides. Thus, cellulose can be converted to glucose.

REFERENCES:
patent: Re1995 (1865-06-01), Hoffman
patent: 1340708 (1920-05-01), Fjellanger
patent: 1878852 (1932-09-01), Hoppler
patent: 1917539 (1933-07-01), Miles
patent: 1919623 (1933-07-01), Dreyfus
patent: 2767108 (1956-10-01), Fetzer
patent: 3432482 (1969-03-01), Ohfuka et al.
patent: 3558530 (1971-01-01), Schroeder et al.
patent: 3660070 (1972-05-01), Maruta et al.
patent: 3816375 (1974-06-01), Bozer et al.
patent: 3873734 (1975-03-01), Higgins et al.
patent: 3878304 (1975-04-01), Moore
patent: 3918952 (1975-11-01), Neumiller
patent: 4116664 (1978-09-01), Jones
patent: 4214888 (1980-07-01), Young
patent: 4310343 (1982-01-01), Verdegaal et al.
patent: 4315763 (1982-02-01), Stoller et al.
patent: 4397675 (1983-08-01), Young
patent: 4402852 (1983-09-01), Young
patent: 4404116 (1983-09-01), Young
patent: 4439348 (1984-03-01), Akerberg
patent: 4447253 (1984-05-01), Young
patent: 4474925 (1984-10-01), Sartoretto et al.
patent: 4522644 (1985-06-01), Young
patent: 4589925 (1986-05-01), Young
patent: 4626417 (1986-12-01), Young
patent: 4673522 (1987-06-01), Young
patent: 4722986 (1988-02-01), Young
Donald C. Young, U.S. Ser. No. 455,268 filed Jan. 3, 1983, for Cellulosic Compositions and Methods for Treating Cellulosic Materials.
Donald C. Young, U.S. Ser. No. 455,317 filed Jan. 3, 1983, for Plant Seed Compositions and Methods for Treating Plant Seeds.
Donald C. Young, U.S. Ser. No. 673,508 filed Nov. 20, 1984, for Thermally Stable Urea-Sulfuric Acid Compositions and Methods of Manufacture.
Donald C. Young, U.S. Ser. No. 688,689 filed Jan. 3, 1985, for Pesticidal Compositions and Methods for Controlling Pests.
Donald C. Young, U.S. Ser. No. 783,368 filed Oct. 3, 1985, for Herbicidal Compositions.
Donald C. Young, U.S. Ser. No. 822,285 filed Jan. 24, 1986, for Methods for Chemically Reducing Nitrogen Oxides.
Donald C. Young, U.S. Ser. No. 918,546 filed Oct. 10, 1986, for Methods for Facilitating the Harvest of Food Crops.
Donald C. Young, U.S. Ser. No. 021,200 filed Mar. 3, 1987, for Electrolytic Cell.
Donald C. Young, U.S. Ser. No. 050,530 filed May 13, 1987, for Methods for Removing Obstructions from Conduits.
Donald C. Young, U.S. Ser. No. 116,472 filed Nov. 3, 1987, for Systemic Herbicides and Methods of Use.
Donald C. Young, U.S. Ser. No. 149,424 filed Jan. 29, 1988 for Acid Catalyzed Reduction.
Donald C. Young, U.S. Ser. No. 149,431 filed Jan. 29, 1988 for Friedel-Crafts Reactions.
Donald C. Young, U.S. Ser. No. 149,701 filed Jan. 29, 1988 for Acid-Catalyzed Nitration.
Donald C. Young, U.S. Ser. No. 149,702 filed Jan. 29, 1988 for Acid Compositions.
Donald C. Young, U.S. Ser. No. 149,734 filed Jan. 29, 1988 for Alkylation.
Donald C. Young, U.S. Ser. No. 149,735 filed Jan. 29, 1988 for Methods for Acid-Catalyzed Reactions.
Donald C. Young, U.S. Ser. No. 150,026 filed Jan. 29, 1988 for Isomerization.
Donald C. Young, U.S. Ser. No. 150,076 filed Jan. 29, 1988 for Acid-Catalyzed Oxidative Reactions.
Donald C. Young, U.S. Ser. No. 150,077 filed Jan. 29, 1988 for Dematallizing Organometallic Compounds.
Donald C. Young, U.S. Ser. No. 150,079 filed Jan. 29, 1988 for Acid-Catalyzed Polymerization.
Donald C. Young, U.S. Ser. No. 150,224 filed Jan. 29, 1988 for Esterification.
Donald C. Young, U.S. Ser. No. 150,230 filed Jan. 29, 1988 for Acid-Catalyzed Reactions.
Donald C. Young, U.S. Ser. No. 236,344 filed Aug. 22, 1988, continuation of USSN 442,296 filed Nov. 17, 1982 for Systemic Herbicidal Compositions and Methods of Use.
Science News, vol. 123, No. 23, Jun. 4, 1983, p. 366. Science Service, Inc., 1719 N Street, N.W., Washington, D.C., "Cellulose Digestion by Lab Bacteria".
The Condensed Chemical Dictionary, Seventh Edition, Van Nostrand Reinhold Co., New York, 1969, p. 908.
L. H. Dalman, "Ternary Systems of Urea and Acids. I. Urea, Nitric Acid and Water. II. Urea, Sulfuric Acid and Water. III. Urea, Oxalic Acid and Water"; JACS 56, 549-53 (1934).
Sulfur Institute Bulletin No. 10 (1964), "Adding Plant Nutrient Sulfur to Fertilizer".
Kirk-Othmer Encyclopedia of Chemical Technology, Third Edition, John Wiley and Sons, New York, 1980, vol. 5, pp. 31-33 and 55-61; vol. 9, pp. 291-374; vol. 11, pp. 295-300, 662-665 and 694-695; and vol. 12, pp. 852-857, and 867-869.

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