Claims
- 1. A granular spray-dried detergent composition substantially free of phosphate builders and comprising:
- (a) one or more detergent-active compounds selected from the group consisting of anionic, nonionic and detergent-active mixtures thereof,
- (b) one or more non-phosphate detergency builders, comprising from 25 to 60% by weight of crystalline or amorphous sodium aluminosilicate,
- (c) from 0 to 10% by weight of sodium silicate,
- (d) from 0.5 to 2.5% by weight of a compound selected from the group consisting of succinic acid, water-soluble salts of succinic acid, and mixtures thereof,
- (e) from 0.5 to 5% by weight of a film-forming polymeric polycarboxylate selected from the group consisting of polyacrylate, arcylic acid/maleic acid copolymer and acrylic phosphinate.
- 2. A composition as claimed in claim 1, which comprises from 2 to 6% by weight of sodium silicate (c).
- 3. A composition as claimed in claim 1, which comprises from 25 to 40% by weight of a crystalline or amorphous alkali metal aluminosilicate.
- 4. A composition as claimed in claim 1, which comprises from 1.0 to 5.0% by weight of the polymeric polycarboxylate (e).
- 5. A composition as claimed in claim 1, wherein the polymeric polycarboxylate has a weight average molecular weight of from 10,000 to 100,000.
- 6. A composition as claimed in claim 1, wherein the succinic acid salt (d) is sodium succinate.
- 7. A composition as claimed in claim 1, which comprises from 5 to 35% by weight of one or more anionic detergent-active compounds and from 0 to 5% by weight of one or more nonionic detergent-active compounds.
- 8. A composition according to claim 7 wherein said anionic detergent-active compound is a linear alkylbenzene sulfonate and said nonionic detergent-active compound is a C.sub.12 -C.sub.15 alcohol ethoxylated with an average of from 3 to 20 moles ethylene oxide per mole of alcohol.
- 9. A process for the preparation of a granular spray-dried detergent composition substantially free of phosphate builders, which comprises the steps of:
- (i) forming an aqueous crutcher slurry comprising one or more anionic and/or nonionic detergent-active compounds, one or more non-phosphate detergency builders, said builders comprising from 25 to 60% by weight of crystalline or amorphous sodium aluminosilicate, from 0 to 10% by weight of sodium silicate, from 0.5 to 2.5% by weight of a compound selected from the group consisting of succinic acid, water-soluble salts of succinic acid, and mixtures thereof, and from 0.5 to 5.0% by weight of a film-forming polymeric polycarboxylate; and
- (ii) spray-drying the slurry to form a powder, all percentages being based on the final powder.
Priority Claims (1)
Number |
Date |
Country |
Kind |
8526999 |
Nov 1985 |
GBX |
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Parent Case Info
This is a continuation application of Ser. No. 921,664, filed on Oct. 21, 1986 now abandoned.
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3998762 |
Murata et al. |
Dec 1976 |
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4303556 |
Llendado |
Dec 1981 |
|
4645616 |
Niven et al. |
Feb 1987 |
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EPX |
0001310 |
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EPX |
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Continuations (1)
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Number |
Date |
Country |
Parent |
921664 |
Oct 1986 |
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