Patent ID: 7867966
Filing Date: 2011-01-11
Classification: C11D

Abstract:
1. A mixed powder or mixed granule comprising at least 80% by weight of a mixture of (a) from 5 to 95% by weight of at least one of glutamic acid-N,N-diacetic acid and one or more salts thereof of formula (I) (b) from 40 to 95% by weight of at least one polyethylene glycol, and (c) optionally, a polymer selected from the group consisting of a polyvinyl alcohol, a polyvinylpyrrolidone, a polyalkylene glycol other than polyethylene glycol and mixtures thereof, wherein % by weight for (a), (b) and (c) is based on the total weight of (a), (b) and (c) and % by weight for the mixture is based on the total weight of the mixed powder or mixed granule.