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Title:
DETERGENT BUILDER, PROCESS FOR PRODUCING THE SAME, AND DETERGENT COMPOSITION CONTAINING SAID BUILDER
Document Type and Number:
WIPO Patent Application WO/1996/018714
Kind Code:
A1
Abstract:
A detergent builder comprising a maleic acid copolymer produced by copolymerizing a maleic acid (salt) with comonomers by using both hydrogen peroxide and a persulfate salt as the polymerization initiator and having a weight-average molecular weight of 5000 to 100000 and a molar ratio of the maleic acid (salt) monomer units to all the monomer units of 0.1 to 0.9. The builder is suitably usable for detergent compositions, because it has a high calcium ion stability constant and can well prevent iron particle precipitation. It is produced by granulating a powder containing the maleic acid copolymer as a water-soluble polycarboxylic acid (salt) polymer by using a surfactant under stirring. As the use of the builder makes it possible to prepare a detergent composition having improved angle of repose, fluidity and moisture absorption resistance and containing the builder having the above characteristics by dry blending, a detergent composition having excellent characteristics can be produced at a low cost.

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Inventors:
YAMAGUCHI SHIGERU (JP)
MAEDA YOSHIHIRO (JP)
Application Number:
PCT/JP1995/002576
Publication Date:
June 20, 1996
Filing Date:
December 15, 1995
Export Citation:
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Assignee:
NIPPON CATALYTIC CHEM IND (JP)
YAMAGUCHI SHIGERU (JP)
MAEDA YOSHIHIRO (JP)
International Classes:
C08F4/30; C11D3/37; C08F22/02; C08F216/08; C08F216/14; C08F218/08; C08F220/06; C08F222/02; C08F222/06; C08F246/00; C11D11/00; (IPC1-7): C11D3/37
Foreign References:
JPH03115314A1991-05-16
JPH03239800A1991-10-25
JPS5653198A1981-05-12
JPS63137746A1988-06-09
JPS50129500A1975-10-13
JPH06263434A1994-09-20
JPS61188497A1986-08-22
JPH062000A1994-01-11
JPH03168300A1991-07-22
Other References:
See also references of EP 0745662A4
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