Organic compounds -- part of the class 532-570 series – Organic compounds – Heterocyclic carbon compounds containing a hetero ring...
Patent
1987-08-17
1988-06-07
Schofer, Joseph L.
Organic compounds -- part of the class 532-570 series
Organic compounds
Heterocyclic carbon compounds containing a hetero ring...
549373, 549375, 549347, 564202, C07D31700, C07C10360
Patent
active
047498005
ABSTRACT:
Polysaccharide esters containing aldehyde and acetal groups having the structural formulas ##STR1## are prepared by reacting a polysaccharide, such as a starch, gum, or cellulose, with an acetal-containing reagent which contains a functional group reactive with the hydroxyl groups of the polysaccharide; Z is a multivalent organic group: A and A' are independently a lower alkyl or together form at least a 5-membered cyclic acetal; x is at least 1; and y is at least 1. When x is >1 the esters are crosslinked. Typical reagents for introducing the acetal group include 3,3-diethoxypropionyl guanidine (itself a novel compound) and 4-(methylaminoacetaldehyde dimethyl acetal)-4-oxo-butanoic acid). The derivatives are useful in conventional applications such as coatings, adhesives, paper additives and foodstuffs.
REFERENCES:
patent: 4110101 (1978-08-01), Stach et al.
patent: 4113464 (1978-09-01), Stach et al.
patent: 4118216 (1978-10-01), Hotz et al.
patent: 4424370 (1984-01-01), Kleeman et al.
patent: 4675394 (1987-06-01), Solarek et al.
Jobe Patrick G.
Lamb Diane J.
Martino Gary T.
Kelley Margaret B.
Mulcahy Peter D.
National Starch and Chemical Corporation
Schofer Joseph L.
Szala Edwin M.
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