Particulate bleach compositions
AssigneeLever Brothers Company
InventorsRoger Foret, Philippus C. van der Hoeven
Life of this patent
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Abstract
Particulate bleach (and detergent) compositions with improved bleach efficiency are disclosed comprising a particulate peroxybleach compound and tetraacetyl ethylene diamine (TAED), said TAED having the following particle size distribution as determined by sieve analysis: 0-20%>150 .mu.m 10-100%>100 .mu.m<150 .mu.m 0-50%<75 .mu.m 0-20%<50 .mu.m, and being contained in granules in combination with a granulating agent, said granules having particle size ranging from 100-2000 .mu.m and comprising 10-99% by weight of TAED. The particulate bleach composition does not suffer from significant sedimentation and/or dissolution problems and does not suffer from significant decomposition problems during storage.
Claims6
A particulate bleach composition comprising 3-99.5% by weight of a particulate inorganic peroxybleach compound, and 0.25-50% by weight of tetraacetyl ethylene diamine (TAED), said TAED having the following particle size distribution as determined by sieve analysis:
- 0-20%<150 .mu.m
- 10-100%>100 .mu.m<150 .mu.m
- 0-50%<75 .mu.m
- 0-20%<50 .mu.m
- and being contained in granules in combination with a granulating agent selected from the group consisting of an organic and inorganic carrier material said granules having a particle size ranging from 100 to 2000 .mu.m and comprising 10-99% by weight of said TAED.
A particulate bleach composition consisting essentially of:
- (a) 2-20% by weight of a detergent active compound, selected from the group consisting of alkali metal salts of long chain C.sub.8 -C.sub.22 fatty acids, anionic sulphonate or sulphate detergent compounds and nonionic alkylene oxide condensation products and mixtures thereof;
- (b) 10-60% by weight of a detergency builder material, selected from the group consisting of inorganic phosphates, carbonates, silicates, zeolites and organic non-phosphate builders, and mixtures thereof;
- (c) 3-30% by weight of an inorganic peroxy bleach compound:
- (d) 0.25-15% by weight of tetraacetyl ethylene diamine (TAED), said TAED having the following particle size distribution as determined by sieve analysis:
- 0-20%>150 .mu.m
- 10-100%>100 .mu.m<150 .mu.m
- 0-50%<75 .mu.m
- 0-20%<50 .mu.m
- and being contained in granules with an organic and/or inorganic carrier material as granulating agent, said granules having a particle size ranging from 100 to 2000 .mu.m and comprising 10-99% by weight of TAED;
- and
- (e) 0-5% by weight of a stabilizing agent selected from the group consisting of ethylene diamine tetra-(methylene phosphonic acid), diethylene triamine penta-(methylene phosphonic acid) and water-soluble salts thereof.
Dependencies are inferred from the claim text.