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US4324677A Expired / Lapsed US ⏱️ 0.0 years remaining

Stable dishwashing agent compositions containing active chlorine

Assignee: Henkel AG and Co KGaA
•
Filing: 1980-12-29
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Granted: 1982-04-13
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Expires: 2000-12-29
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Abstract

Abstract Stable, alkaline, granulated dishwashing agent composition containing active chlorine for use in mechanical dishwashers, having a content of builder salts, alkali metal silicates, alkali metal carbonates and, optionally, nonionic surface-active compounds and containing from 1% to 30% by weight of finely divided trichloroisocyanuric acid in the form of granulates or prills with a total surface area as small as possible and having a degree of purity of ≧ 99% as determined by laser-Raman spectroscopy, and from 10% to 40% by weight of granulated alkali metal hydroxide with a total surface area as small as possible.

Inventors

  • 👤 Jochen Kaufmann
  • 👤 Theodor Altenschopfer
  • 👤 Klaus Schumann
  • 👤 Friedel Rings

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-29 10:43
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/395; C11D3/3955; C11D3/16; C11D3/26; C11D3/28; C11D7/00; C11D7/02; C11D7/04; C11D7/06

Claims Analysis

Total Claims: 13
Claim 1
Independent Claim 239 words
A stable, alkaline, granulated dishwashing agent composition containing active chlorine and alkali metal hydroxide for use in mechanical dishwashers consisting essentially of an admixture of: (a) from 1% to 30% by weight of finely divided trichloroisocyanuric acid in the form of granulates or prills having particles of which more than 84% by weight pass through a screen with an inside mesh diameter of 1.6 mm and more than 90% by weight are retained by a screen with the inside mesh diameter of 0.2 mm and having a degree of purity of ≧99% as determined by laser-Raman spectroscopy, (b) from 10% to 40% by weight of granulated alkali metal hydroxide having particles of which more than 80% by weight pass through a screen with an inside mesh diameter of 1.6 mm and less than 10% by weight pass through a screen with an inside mesh diameter of 0.2 mm, (c) from 5% to 60% by weight of builders selected from the group consisting of alkali metal polyphosphates and mixtures of said polyphosphates with up to 60% by weight of the builders of synthetic, water-insoluble alkali metal aluminosilicates having a calcium binding capacity of between 50 and 200 mg CaO/gm of anhydrous inorganic active substance, (d) from 5% to 50% by weight of alkali metal silicates, (e) from 2% to 50% by weight of alkali metal carbonates, or sulfates, and (f) from 0 to 5% by weight of nonionic surface-active compounds.
Claim 2
Dependent Claim 239 words
A stable, alkaline, granulated dishwashing agent composition containing active chlorine and alkali metal hydroxide for use in mechanical dishwashers consisting essentially of an admixture of: (a) from 1% to 30% by weight of finely divided trichloroisocyanuric acid in the form of granulates or prills having particles of which more than 84% by weight pass through a screen with an inside mesh diameter of 1.6 mm and more than 90% by weight are retained by a screen with the inside mesh diameter of 0.2 mm and having a degree of purity of ≧99% as determined by laser-Raman spectroscopy, (b) from 10% to 40% by weight of granulated alkali metal hydroxide having particles of which more than 80% by weight pass through a screen with an inside mesh diameter of 1.6 mm and less than 10% by weight pass through a screen with an inside mesh diameter of 0.2 mm, (c) from 5% to 60% by weight of builders selected from the group consisting of alkali metal polyphosphates and mixtures of said polyphosphates with up to 60% by weight of the builders of synthetic, water-insoluble alkali metal aluminosilicates having a calcium binding capacity of between 50 and 200 mg CaO/gm of anhydrous inorganic active substance, (d) from 5% to 50% by weight of alkali metal silicates, (e) from 2% to 50% by weight of alkali metal carbonates, or sulfates, and (f) from 0 to 5% by weight of nonionic surface-active compounds.
Claim 3
Dependent Claim 28 words
The composition of claim 1 containing from 3% to 15% by weight of said trichloroisocyanuric acid and from 15% to 30% by weight of said alkali metal hydroxide.
Claim 4
Dependent Claim 28 words
The composition of claim 1 containing from 5% to 15% by weight of said trichloroisocyanuric acid and from 15% to 30% by weight of said alkali metal hydroxide.
Claim 5
Dependent Claim 55 words
The composition of claim 1 or 2 or 3 wherein said finely divided trichloroisocyanuric acid has particles of which more than 95% by weight pass through a screen with an inside mesh diameter of 1.6 mm and more than 95% by weight are retained by a screen with the inside mesh diameter of 0.2 mm.
Claim 6
Dependent Claim 50 words
The composition of claim 4 wherein said granulated alkali metal hydroxide has particles of which more than 80% by weight pass through a screen with an inside mesh diameter of 1.6 mm and less than 10% by weight pass through a screen with an inside mesh diameter of 0.2 mm.
Claim 7
Dependent Claim 55 words
The composition of claim 1 or 2 or 3 wherein said finely divided trichloroisocyanuric acid has particles of which more than 98% by weight pass through a screen with an inside mesh diameter of 1.6 mm and more than 99% by weight are retained by a screen with the inside mesh diameter of 0.2 mm.
Claim 8
Dependent Claim 50 words
The composition of claim 6 wherein said granulated alkali metal hydroxide has particles of which more than 80% by weight pass through a screen with an inside mesh diameter of 1.6 mm and less than 10% by weight pass through a screen with an inside mesh diameter of 0.2 mm.
Claim 9
Dependent Claim 62 words
The composition of claim 1 or 2 or 3 wherein said finely divided trichloroisocyanuric acid has particles of which over 98% by weight of which are retained by a screen with an inside mesh diameter of 0.4 mm and at the same time over 55% by weight of which are retained by a screen with an inside mesh diameter of 0.8 mm.
Claim 10
Dependent Claim 50 words
The composition of claim 8 wherein said granulated alkali metal hydroxide has particles of which more than 80% by weight pass through a screen with an inside mesh diameter of 1.6 mm and less than 10% by weight pass through a screen with an inside mesh diameter of 0.2 mm.
Claim 11
Dependent Claim 47 words
The composition of claim 9 wherein said granulated alkali metal hydroxide is sodium hydroxide prills, practically 100% by weight of which pass through a screen with an inside mesh diameter of 1.6 mm and which contains practically no particles with a size of less than 0.2 mm.
Claim 12
Dependent Claim 91 words
The composition of claim 1 wherein: component (a) is present in an amount of from 3% to 15% by weight, component (b) is present in an amount of from 15% to 30% by weight, component (c) is present in an amount of from 20% to 45% by weight, component (d) is present in an amount of from 20% to 40% by weight, component (e) is present in an amount of from 5% to 30% by weight, and component (f) is present in an amount of from 0.5% to 15% by weight.
Claim 13
Dependent Claim 21 words
The composition of claim 11 wherein said component (a) is present in an amount of from 5% to 15% by weight.

References Cited (Backward Citations)

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US3166513A Cited
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US3352785A Cited
US3491028A Cited
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USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1985-04-12 1985-10-12 1986-04-13 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1989-04-12 1989-10-12 1990-04-13 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1993-04-12 1993-10-12 1994-04-13 $7700.00 Window Closed / Lapsed

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