Organic compounds -- part of the class 532-570 series – Organic compounds – Carboxylic acid esters
Patent
1999-04-29
2000-10-17
Barts, Samuel
Organic compounds -- part of the class 532-570 series
Organic compounds
Carboxylic acid esters
C07C26902, C07C27160
Patent
active
061334731
ABSTRACT:
Disclosed is a method for the preparation of carbamate compounds substantially free of by-products; the carbamate compounds being prepared by reacting an isocyanate with a hydroxylated compound in the presence of certain catalysts that increase the rate of carbamylation while decreasing the rate of by-product formation.
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Database Caplus on STN, Acc. No. 1997:295855, Bryld et al., `Iodopropynyl butylcarbamate: a new contact allergen` Contact Dermatitis (1997), 36(3), p. 156-158 (abstract), 1997.
Database Caplus on STN, Acc. No. 1974:437409, Mori et al., `Carbamates.` JP 49031638 A2 (abstract), Mar. 22, 1974.
Database Derwent, Acc. No. 1987-038636, Salido Garcia, `Ketoxime carbamate(s) prepn. -by reacting oxime with aliphatic isocyanates in liq. state in presence of iron (in)organic salts.` IL 64407 A (abstract), Nov. 30, 1986.
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Chemical Abstracts, vol. 120, No. 3, 1993 XP002116602.
"Catalysis of the Isocyanate-Hydroxyl Reaction", J. W. Britain and P. G. Gemeinhardt; Journal of Applied Polymer Science, vol. IV, Issue No. 11, pp. 207-211 (1960).
Barts Samuel
Cairns S. Matthew
Davis Brian J.
Rogerson Thomas D.
Rohm and Haas Company
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