Patent ID: 9376649
Filing Date: 2016-06-28
CPC Classification: C07B,C07C,C11D

Claim Text:
1. A process for preparing a crystalline solid, the process comprising spray granulating an aqueous solution of a liquid raw material on a crystalline seed material to obtain the crystalline solid, and heat-aftertreating the crystalline solid, wherein the crystalline seed material, the liquid raw material, and the crystalline solid each comprise a glycine-N,N-diacetic acid derivative of formula (I) wherein R is: a C an alkoxylate moiety of formula (II) in which A 1 and A 2 each independently are 1,2-alkylene groups having 2 to 4 C atoms, Y is hydrogen, C 1 to C 12 alkyl, phenyl or C 1 to C 4 alkoxycarbonyl, k is 1, 2 or 3, and m and n are each integers of 0 to 50, a sum of m+n being at least 4; a phenylalkyl group having 1 to 20 C atoms in the alkyl part of the group; a five- or six-membered, unsaturated or saturated, heterocyclic ring having up to three heteroatoms from the group consisting of nitrogen, oxygen, and sulfur, which may additionally be benzofused, it being possible for any phenyl ring and heterocyclic ring of R additionally to have up to three substituents selected from the group consisting of a C R is a radical of formula (III) where A is a C 1 to C 12 alkylene bridge or a chemical bond, and each M independently is hydrogen, an alkali metal, an alkaline earth metal, ammonium or substituted ammonium in a corresponding stoichiometric amount.