Abstract: Disclosed as a novel compound is cyano-(4-cyanophenyl)methyl ethyl ester of carbonic acid. This compound has utility as an agent for selective control of barnyard grass.

Abstract: Disclosed as a novel compound is cyano-(2,4-dichlorophenyl)methyl ethyl ester of carbonic acid. This compound has utility as a nematocide.

Abstract: This invention is a method of preventing phase separation of hydrous ethanol and liquid hydrocarbon fuel mixtures comprising the addition of an effective amount of dialkyl carbonates.

Abstract: Compounds represented by the formula: ##STR1## and addition polymers thereof where m is an integer from 2 to about 10, X-- is chlorine, hydroxy, carboxy or:--AC--R).dbd.CH.sub.2--R is hydrogen or methyl, --R--' is an ethylene or propylene group and--AC--R).dbd.CH.sub.2is one of: ##STR2## These compounds and their addition polymers form complexes with alkali metal or alkaline earth metal salts and permit the concentration of aqueous solutions of said salts. For example, a compound of the formula: ##STR3## is polymerized with an azobis (isobutyronitrile) catalyst to form addition polymers of the repeating unit ##STR4## When cross-linked, rendering it water-insoluble, such an addition polymer concentrates an aqueous solution of sodium chloride when contacted with same at about 0.degree. C.