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US 12,312,559 B2Granted
Glycerol aminocarboxylate-based detergent builders and additives
AssigneeBattelle Memorial Institute
InventorDaniel B. Garbark
Life of this patent
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Abstract
Laundry detergent builder additives are described. Laundry detergent builder additives are water softeners that work to maintain detergent stability and improve the cleaning efficiency of the detergent formulation. These detergent additives also maintain alkalinity that assists cleaning, provides anti-corrosion properties, and helps keep soil from redepositing during washing. The laundry detergent builder additives are functionalized glycerol and soybean meal-based derivatives.
Claims8
A method for producing a glycerol-based detergent builder having an end group of an aminocarboxylate or salt thereof, comprising:
- (a) reacting glycerol with one or more nitriles comprising acrylonitrile, but-3-enenitrile, pent-4-enenitrile, hex-5-enenitrile, and chloroacetonitrile to form an etherified glycerol intermediate having terminal cyano groups;
- (b) reacting the terminal cyano groups of said etherified glycerol intermediate with ethylene diamine or diethylene triamine thereby providing terminal amino groups;
- and
- reacting the terminal amino group in the product of step (b) with chloroacetic acid in the presence of a base and forming end groups on said etherified glycerol intermediate comprising an aminocarboxylate group or salt thereof detergent builder.
1 more element
Dependencies are inferred from the claim text.