申请人:THE DOW CHEMICAL COMPANY
公开号:EP0522547A3
公开(公告)日:1993-04-28
New compounds are represented by Formulas 1 and 2 where Formula 1 is:
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 -C2Hs, more preferably each R6 is H and Formula 2 is:
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.
新化合物由公式1和公式2表示,其中公式1为:其中,R1、R2、R3和R4中的每一个独立地为H、羟基烷基、-C(R6)2COOH或铵、胺或其碱金属盐;R5为至少具有一个羰基的烷基链;每个R6独立地选自1至4个碳原子的烷基,直链或支链,优选为H、-CH3或-C2Hs,更优选为每个R6为H;公式2为:其中,R1、R2、R3、R4、R5和R6如公式1中所定义,优选为至少3个,最优选为4个R1、R2、R3和R4独立地为-C(R6)2COOH或其盐;每个R7独立地为R5或烷基链。这些化合物具有光解和生物降解的优点,特别适用于螯合剂,尤其是在洗涤剂和气体调节中。