Carbonyl-containing degradable chelants, uses and...

Details Carbonyl-containing degradable chelants, uses and... Carbonyl-containing degradable chelants, uses and...

C - Chemistry, Metallurgy

07

C

C07C 229/22 (2006.01) B01D 53/60 (2006.01) C01B 17/05 (2006.01) C07C 237/12 (2006.01) C11D 3/30 (2006.01) C11D 3/32 (2006.01) C11D 3/33 (2006.01)

Patent

CA 2073578

ABSTRACT New compounds are represented by Formulas 1 and 2 where Formula 1 is: Image wherein each of R1, R2, R3, and R4 is independently H, hydroxyalkyl, -C(R6)2COOH or ammonium, amine, or alkali metal salts thereof; R5 is an alkylene group having at least one carbonyl group; and each R6 is independently selected from H, and alkyl groups of from 1 to 4 carbon atoms, straight or branched chain, preferably H, -CH3, or -C2H5, more preferably each R6 is H and Formula 2 is: Image wherein R1, R2, R3, R4, R5 and R6 are defined for Formula 1, preferably at least 3, most preferably 4 of R1, R2, R3, and R4 are independently-C(R6)2COOH or salts thereof; and each R7 is independently R5 or an alkylene group. The compounds are advantageously photo- and bio-degradable and are particularly useful as chelants especially in washing compositions and in gas conditioning.

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