公开(公告)号：US3700599A

公开(公告)日：1972-10-24

申请号：US3700599D

申请日：1970-09-25

Applicant: ECONOMICS LAB

Inventor： MIZUNO WILILAM G ,  COPELAND JAMES L ,  SCHOLZE ARLENE E

IPC: C11D3/37 ,  C11D7/56

CPC classification number: C11D3/2086 ,  C11D3/3757 ,  C11D3/3769 ,  C11D3/378

Abstract: DIETERGENT COMPOSITIONS FOR MECHANICALLY CLEANING HARD SURFACES (E.G.DISHES) ARE CHARACTERIZED BY THE PRESENCE THEREIN OF A MIXTURE OF METALLIC SALT OF CITRIC ACID (E.G. SODIUM CITRATE) AND WATER SOLUBLE POLYMERIC, ORGANIC POLYETECTROLYTE (E.G. HYDROLYZED MALEIC ANHYDRIDE POLYMERS). THIS MIXTURE PERMITS THE REDUCTION OF OR ELIMINATION OF CONDENSED PHOSPHATE SALTS COMMONLY USED IN DETERGENT OMPOSITIONS OF THIS TYPE (E.G. MACHINE DISHWASHING DETERGENTS).

公开(公告)号：US3899436A

公开(公告)日：1975-08-12

申请号：US30559672

申请日：1972-11-10

Applicant: ECONOMICS LAB

Inventor： COPELAND JAMES L ,  MIZUNO WILLIAM G

IPC: C11D3/00 ,  C11D3/20 ,  C11D7/38

CPC classification number: C11D3/2086 ,  C11D3/044 ,  C11D3/06 ,  C11D3/08 ,  C11D3/10

Abstract: Machine dishwashing detergents having a low condensed phosphate content and characterized by the presence therein of a metallic salt of citric acid (e.g. sodium citrate). An alkaline machine dishwashing detergent (e.g. pH at 1% concentration above 10.5) containing less than 30 weight percent on a dry basis of sodium tripolyphosphate and at least 5 weight percent of an alkali metal citrate.