Applications of Starch Ethers

Allylstarch can be blended with lower alkyl itaconates in the ratio from 2 1 to 10 1 and then copolymerized with a variety of coating materials to enhance coating plasticity, drying, and hardening.1028 Allylstarch can be polymerized into insoluble products using either sulfur chloride or disulfur dichloride.1029 The reaction product of allylstarch with propylene oxide was utilized as a dispersant for petroleum emulsions.1030 Novel resinous materials have been obtained from adducts of unsaturated esters of dienophilic dioic acids and cyclic polyenic hydrocarbons with mono- and di-allyl starch.1031 

0-(Carboxymethyl)starch causes diarrhea in experimental rats, and this effect increases with the DS of the product. 0-(Carboxymethyl)amylose is more laxative than 0-(carboxymethyl)amylopectin.1127 Despite this result, (car-boxymethyl)starch has been proposed as a texture and taste improver for ice cream.1128 1129 Aluminum salts of this material have been patented as antiulcer preparations.679 A syrup conatining 0-(carboxymethyl)starch the treatment of respiratory ailments was patented.797 Glyceryl starch was reported as a component of protective ointments.1130 

A method for separating granulocytes from normal human blood using (hy-droxyethyl)starch has been published.1221 (Hydroxyethyl)starch appears to be 

Additional information on starch ethers has been reported by Pringsheim,1264 Hjermstad1265 as well as Banks and coworkers,1266 and Mishler1267 [only (hydrox-yethyl)starch], Omae and coworkers1268 [only (hydroxypropyl)starch adhesives], Hjermstad,1269 Mehltretter,1270 Moser1271 [(hydroxyethyl)starch], Tuschhoff1272 [(hydroxypropyl)starch], and Wurzburg1273 (crosslinked starches). 

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