申请人:THE DOW CHEMICAL COMPANY
公开号:EP0522547A2
公开(公告)日:1993-01-13
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.
新化合物由式 1 和式 2 表示,其中式 1 为:
其中R1、R2、R3和R4各自独立地为H、羟烷基、-C(R6)2COOH或其
铵、胺或碱
金属盐;R5为至少有一个羰基的亚烷基;每个R6独立地选自H和1至4个碳原子的直链或支链烷基,优选H、-
CH3或-C2Hs,更优选每个R6为H,式2为:
其中 R1、R2、R3、R4、R5 和 R6 定义为式 1,优选 R1、R2、R3 和 R4 中至少 3 个,最优选 4 个独立地为-C(R6)2COOH 或其盐;每个 R7 独立地为 R5 或亚烷基。这些化合物具有光降解和
生物降解的优点,特别适用于作为
螯合剂,尤其是在洗涤组合物和气体调节中。