Low-phosphate detergent builder salt mixture and process of washing
AssigneeHenkel Kommanditgesellschaft auf Aktien
InventorKlaus Hachmann
Life of this patent
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Abstract
A low-phosphate detergent builder salt mixture consisting of (a) from 45% to 75% by weight of a water-insoluble, finely-divided, synthetic, crystalline alkali metal aluminosilicate with a calcium binding power of from 50 to 200 mg CaO/gm at 22.degree. C., (b) from 15% to 40% by weight of sodium or potassium carboxymethyloxysuccinate, and (c) from 5% to 15% by weight of sodium or potassium tripolyphosphate; as well as use of the same in detergents in amounts of 25% to 60% by weight with the proviso that the total tripolyphosphate content in the detergent does not exceed 5% by weight.
Claims10
A builder salt mixture for washing, rinsing and cleansing agent compositions consisting essentially of:
- (a) from 50% to 75% by weight of at least one water-insoluble, finely-divided, synthetic, crystalline alkali metal aluminosilicate containing at least some combined water and having primary particles in the size range of from 50.mu. to 0.01.mu. and a calcium binding power of from 50 to 200 mg CaO/gm of anhydrous active substance when measured at 22.degree. C. by the Calcium Binding Power Test Method set out in the specification and the formula on the anhydrous basis
- 0.7-1.5 Me.sub.2 O.Al.sub.2 O.sub.3.1.3-4.0 SiO.sub.2
- where Me is an alkali metal,
- (b) from 20% to 35% by weight of at least one carboxymethyloxysuccinate selected from the group consisting of sodium carboxymethyloxysuccinate and potassium carboxymethyloxysuccinate, and
- (c) from 8% to 15% by weight, based on the anhydrous salt, of a tripolyphosphate selected from the group consisting of sodium tripolyphosphate and potassium tripolyphosphate.
A washing, rinsing and cleansing agent composition comprising builder salts, tensides, wash alkalies, and optionally other conventional additives for washing, rinsing and cleansing agent compositions wherein
- (A) said builder salts are present in an amount of from 25% to 60% by weight and consist of a builder salt mixture consisting essentially of:
- (a) from 50% to 75% by weight of at least one water-insoluble, finely-divided, synthetic, crystalline alkali metal aluminosilicate containing at least some combined water and having primary particles in the size range of from 50.mu. to 0.01.mu. and a calcium binding power of from 50 to 200 mg CaO/gm of anhydrous active substance when measured at 22.degree. C. by the Calcium Binding Power Test Method set out in the specification and the formula on the anhydrous basis
- 0.7-1.5 Me.sub.2 O.Al.sub.2 O.sub.3.1.3-4.0 SiO.sub.2
- where Me is an alkali metal,
- (b) from 20% to 35% by weight of at least one carboxymethyloxysuccinate selected from the group consisting of sodium carboxymethyloxysuccinate and potassium carboxymethyloxysuccinate, and
- (c) from 8% to 15% by weight, based on the anhydorus salt, of a tripolyphosphate selected from the group consisting of sodium tripolyphosphate and potassium tripolyphosphate,
- (B) said tensides are present in an amount of 5% to 20%,
- (C) said wash alkalies are present in an amount of from 0 to 8% by weight of sodium silicate and from 0 to 10% by weight of other wash alkalies,
- (D) said other conventional additives include from 0 to 30% by weight of sodium perborate-tetrahydrate, from 0 to 1% of organic nitrogen containing or phosphorus-containing sequestering agent and from 1% to 30% by weight of soil suspension agents, optical brighteners, enzymes, biocides, fabric softeners, dyes and perfumes, sodium sulfate and water,
- with the proviso that the amount of said tripolyphosphate component (c) in said washing, rinsing and cleansing agent composition does not exceed 5% by weight.
Dependencies are inferred from the claim text.