Organic compounds -- part of the class 532-570 series – Organic compounds – Carbohydrates or derivatives
Patent
1982-04-01
1983-04-12
Griffin, Ronald W.
Organic compounds -- part of the class 532-570 series
Organic compounds
Carbohydrates or derivatives
536107, 536109, 536110, C08B 3104, C08B 3116
Patent
active
043799191
ABSTRACT:
Novel starch sulfomaleate half-esters are prepared by reacting a starch base or a modified starch containing anionic, cationic, and/or nonionic substituent groups with about 0.1 to 100% by weight of sulfomaleic anhydride or its salts. The reaction is carried out at pH 5-9 and at 5.degree.-90.degree. C. for 0.5-20 hours or at pH 9-11 and at 5.degree.-30.degree. C. for about 0.5-3 hours. The starch sulfomaleates may be reacted with sulfurous acid or its acid salts (e.g. sodium bisulfite) to form the novel starch disulfosuccinate.
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Dirscherl Teresa A.
Tessler Martin M.
Wurzburg Otto B.
Griffin Ronald W.
Kelley Margaret B.
National Starch and Chemical Corporation
Szala Edwin M.
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