发明名称 |
Polysaccharide esters containing acetal and aldehyde groups |
摘要 |
Polysaccharide esters containing aldehyde and acetal groups having the structural formulas <IMAGE> +TR <IMAGE> 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.
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申请公布号 |
US4749800(A) |
申请公布日期 |
1988.06.07 |
申请号 |
US19870085825 |
申请日期 |
1987.08.17 |
申请人 |
NATIONAL STARCH AND CHEMICAL CORPORATION |
发明人 |
JOBE, PATRICK G.;LAMB, DIANE J.;MARTINO, GARY T. |
分类号 |
C08B3/14;C08B13/00;C08B31/00;C08B31/04;C08B37/00;D21H17/24;D21H21/18;(IPC1-7):C07D317/00;C07C103/60 |
主分类号 |
C08B3/14 |
代理机构 |
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