| 摘要 |
FIELD: chemistry.SUBSTANCE: invention relates to a solid substance which is suitable as a complexing agent for ions of alkali-earth and heavy metals in solid compositions of detergent and cleaning agents. The solid substance includes the following components: a) a core containing glutamic acid-N,N-diacetic acid and/or a salt thereof, and b) an envelope containing a compound of general formulaI. In formula I, R denotes an alkyl with 1-30 carbon atoms and each M independently denotes hydrogen, an alkali metal, an alkali-earth metal, ammonium or substituted ammonium (e.g. organic amine salts) in corresponding stoichiometric amounts. The invention also relates to a method of producing said solid substance and a solid composition of detergent and cleaning agents containing said substance.EFFECT: disclosed solid substance has sufficiently low water absorption.7 cl, 3 ex |
