FIELD: chemistry.
SUBSTANCE: invention relates to a method for making granules of salts of at least two aminopolycarboxylic acids (A). Disclosed is a method for making granules of salts of at least two aminopolycarboxylic acids (A) according to claim 1. The method encompasses the stages of: (a) providing an aqueous solution, (A1) of one alkali metal salt of a mixture of L- and D-enantiomers of methylglycine diacetic acid (MGDA). The said mixture predominantly contains the corresponding L-isomer with enantiomeric excess (ee) in the range from 10 to 95%, and (A2) one alkali metal salt of enantiomerically pure L-GLDA, and the weight ratio of (A1) to (A2) is in the range from 1: 9 to 9:1, (b) spray granulation of the said solution with an inlet gas temperature of at least 125°C. Additionally, the present invention relates to granules and their use.
EFFECT: invention provides a solid base component for cleaning compositions that demonstrates reduced yellowing in the presence of oxygen bleach.
11 cl, 3 tbl
| Title | Year | Author | Number |
|---|---|---|---|
| POWDERS AND GRANULES AND METHOD OF PRODUCING SUCH POWDERS AND GRANULES | 2017 |
|
RU2742268C2 |
| METHOD OF PRODUCING A MIXTURE OF AN ALKALI METAL SALT OF METHYLGLYCINE DIACETIC ACID AND AN ALKALI METAL SALT OF GLUTAMIC DIACETIC ACID, A MIXTURE OF L- AND D-ENANTIOMERS OF SAID SALTS AND AN AQUEOUS SOLUTION OF SAID MIXTURE FOR PRODUCING DETERGENT COMPOSITIONS FOR WASHING AND CLEANING | 2016 |
|
RU2722803C2 |
| POWDER AND GRANULE, PROCESS FOR MAKING SUCH POWDER AND GRANULE, AND USE THEREOF | 2015 |
|
RU2678773C2 |
| METHOD OF PRODUCING GRANULES | 2016 |
|
RU2728876C2 |
| MIXTURE OF CHELATING AGENTS AND A METHOD FOR PRODUCING SAID MIXTURES | 2017 |
|
RU2742269C2 |
| MIXTURE OF CHELATING AGENTS AND METHOD OF PRODUCING SAID MIXTURES | 2016 |
|
RU2712767C2 |
| MIXTURES OF ENANTIOMERS AND METHOD OF OBTAINING SUCH MIXTURES | 2014 |
|
RU2675835C2 |
| AQUEOUS SOLUTION CONTAINING COMPLEX OF COMPLEXING AGENTS | 2015 |
|
RU2696284C2 |
| AQUEOUS SOLUTIONS CONTAINING COMPLEXING AGENT IN HIGH CONCENTRATION | 2014 |
|
RU2659787C2 |
| SOLUTIONS OF TRI-ALKALI SALTS OF AMINOCARBOXYLIC ACIDS, PRODUCTION AND USE THEREOF | 2015 |
|
RU2705366C2 |
