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US3966629A Expired / Lapsed US ⏱️ 0.0 years remaining

Textile softening detergent compositions

Assignee: Procter and Gamble Co
•
Filing: 1974-08-23
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Granted: 1976-06-29
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Expires: 1994-08-23
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Abstract

Abstract Granular built laundry detergent compositions comprising smectite-type clay materials and prepared by specified processes.

Inventors

  • 👤 Richard John Dumbrell

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-23 16:19
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/02; C11D3/12; C11D3/124; C11D3/1246; C11D3/1253; C11D3/126; C11D11/00; C11D11/0082; C11D11/0088

Claims Analysis

Total Claims: 12
Claim 1
Independent Claim 183 words
Process for preparing a built laundry detergent composition comprising the step of spraying a moving bed of a particulate carrier selected from the group consisting of sodium and potassium tripolyphosphate, pyrophosphates, acid pyrophosphates, carbonates, sulfates, borates, and silicates and spray dried built synthetic detergent granules containing a hydratable, inorganic salt dried to such an extent that the salt is incompletely hydrated, said moving bed containing up to 50% by weight of a smectite-type clay softening agent having an ion exchange capacity of at least 50 meq/100 g, with a liquid agglomerating agent selected from the group consisting of aqueous solutions of electrolytes containing no more than 75% of saturation of said electrolytes and said electrolytes being selected from the group consisting of water soluble phosphates, tripolyphosphates, acid pyrophosphates, neutral pyrophosphates, carbonates, sulfates, chlorides, borates, silicates and mixtures thereof; water; and solutions of organic adhesives, said liquid agglomerating agent containing up to 60% by weight of said clay, the weight ratio of said agglomerating agent to the combined weight of said clay and said carrier being from 1% to 40%, to form free-flowing agglomerates.
Claim 2
Dependent Claim 183 words
Process for preparing a built laundry detergent composition comprising the step of spraying a moving bed of a particulate carrier selected from the group consisting of sodium and potassium tripolyphosphate, pyrophosphates, acid pyrophosphates, carbonates, sulfates, borates, and silicates and spray dried built synthetic detergent granules containing a hydratable, inorganic salt dried to such an extent that the salt is incompletely hydrated, said moving bed containing up to 50% by weight of a smectite-type clay softening agent having an ion exchange capacity of at least 50 meq/100 g, with a liquid agglomerating agent selected from the group consisting of aqueous solutions of electrolytes containing no more than 75% of saturation of said electrolytes and said electrolytes being selected from the group consisting of water soluble phosphates, tripolyphosphates, acid pyrophosphates, neutral pyrophosphates, carbonates, sulfates, chlorides, borates, silicates and mixtures thereof; water; and solutions of organic adhesives, said liquid agglomerating agent containing up to 60% by weight of said clay, the weight ratio of said agglomerating agent to the combined weight of said clay and said carrier being from 1% to 40%, to form free-flowing agglomerates.
Claim 3
Dependent Claim 24 words
The process of claim 1 wherein the carrier is selected from a group consisting of incompletely hydrated sodium tripolyphosphate and tetrasodium, and disodium pyrophosphates.
Claim 4
Dependent Claim 24 words
The process of claim 1 wherein the liquid agglomerating agent is selected from the group consisting of said aqueous solutions of electrolytes and water.
Claim 5
Dependent Claim 29 words
The process of claim 1, wherein the carrier is selected from the group consisting of incompletely hydrated sodium tripolyphosphate, tetrasodium and disodium pyrophosphates, and spray-dried built synthetic detergent granules.
Claim 6
Dependent Claim 24 words
The process of claim 2 wherein the liquid agglomerating agent is selected from the group consisting of said aqueous solutions of electrolytes and water.
Claim 7
Dependent Claim 38 words
The process of claim 4 wherein all the clay is dispersed in the agglomerating agent so as to provide a sprayable dispersion and the dispersion is sprayed onto a moving bed of the carrier to form free-flowing agglomerates.
Claim 8
Dependent Claim 31 words
The process of claim 4 wherein the clay and the carrier are dry mixed and a moving bed of the mixture is sprayed with an agglomerating agent to form free-flowing agglomerates.
Claim 9
Dependent Claim 26 words
The process of claim 6 wherein the dispersion of clay in the agglomerating agent contains from 20 to 50% of clay by weight of the dispersion.
Claim 10
Dependent Claim 32 words
The process of claim 8 wherein the agglomerating agent is selected from the group consisting of aqueous electrolyte solutions that are less than 75% saturated and fatty acids having 10-24 carbon atoms.
Claim 11
Dependent Claim 43 words
The process of claim 9 wherein the agglomerating agent is an aqueous solution containing from 3 to 10% by weight of an electrolyte selected from the group consisting of disodium pyrophosphate and a 2:1 by weight mixture of disodium pyrophosphate and sodium chloride.
Claim 12
Dependent Claim 41 words
The process of claim 10 wherein the carrier is sodium tripolyphosphate and it is sprayed with about 50% by weight of a dispersion containing 33% by weight of clay in an aqueous solution containing 5% disodium pyrophosphate and 21/2% sodium chloride.

References Cited (Backward Citations)

US3852211A Cited
US3862058A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1979-06-29 1979-12-29 1980-06-29 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1983-06-29 1983-12-29 1984-06-29 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1987-06-29 1987-12-29 1988-06-29 $7700.00 Window Closed / Lapsed

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