US4959170A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rinsing composition free from phosphate
Assignee: Clariant Produkte Deutschland GmbH
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Filing: 1988-11-21
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Granted: 1990-09-25
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Expires: 2008-11-21
Abstract
Abstract A rinsing composition free from phosphate contains as a builder a crystalline layer sodium silicate of the general formula NaMSi x O 2x+1 .y H 2 O, in which M is sodium or hydrogen, x is a number of 1.9-4 and y is a number of 0-20, in admixture with a co-builder which is a polymeric and/or copolymeric carboxylic acid or a salt of said acid.
Inventors
- 👤 Hannsjorg Ulrich
- 👤 Lothar Westermann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 17:48
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/02; C11D3/12; C11D3/124; C11D3/1246; C11D3/1253; C11D3/1273; C11D3/16; C11D3/37; C11D3/3746; C11D3/3757; C11D3/3761
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
134 words
An improved rinsing composition for cleaning of hard surfaces and for preventing depositions thereon, said composition consisting essentially of: as a builder, 30-50 weigth-% of a crystalline layer sodium silicate of the general formula NaMSi x O 2x+1 ·y H 2 O, in which M stands for sodium or hydrogen, x stands for a number from 1.9 to 4 and y stands for a number from 0 to 20, as a co-builder, 0.1-7.5 weight-% of at least one substance selected from the group consisting of hydroxymethylene carboxylates, maleic acid anhydride, ethylene vinyl ether or maleic acid anhydride/acrylic acid copolymers or the sodium salts thereof, 0-45 weight-% of a filler, 10-25 weight-% of an alkali carrier, 1-2 weight-% of a surfactant, and 1-5 weight-% of an active chlorine carrier, said composition being free of phosphate.
Claim 2
Dependent Claim
134 words
An improved rinsing composition for cleaning of hard surfaces and for preventing depositions thereon, said composition consisting essentially of: as a builder, 30-50 weigth-% of a crystalline layer sodium silicate of the general formula NaMSi x O 2x+1 ·y H 2 O, in which M stands for sodium or hydrogen, x stands for a number from 1.9 to 4 and y stands for a number from 0 to 20, as a co-builder, 0.1-7.5 weight-% of at least one substance selected from the group consisting of hydroxymethylene carboxylates, maleic acid anhydride, ethylene vinyl ether or maleic acid anhydride/acrylic acid copolymers or the sodium salts thereof, 0-45 weight-% of a filler, 10-25 weight-% of an alkali carrier, 1-2 weight-% of a surfactant, and 1-5 weight-% of an active chlorine carrier, said composition being free of phosphate.
Claim 3
Dependent Claim
14 words
The rinsing composition as claimed in claim 1, containing 0.1-3 wt % pulverulent co-builder.
Claim 4
Dependent Claim
14 words
The rinsing composition as claimed in claim 1, containing 0.3-7.5 wt % liquid co-builder.
Claim 5
Dependent Claim
19 words
The rinsing composition as claimed in claim 1, containing sodium dichloroisocyanurate or chlorine bleach liquor as the active chlorine-carrier.
Claim 6
Dependent Claim
14 words
The rinsing composition as claimed in claim 1, containing sodium sulfate as the filler.
Claim 7
Dependent Claim
23 words
The rinsing composition as claimed in claim 1, containing sodium carbonate, caustic soda or a water-soluble alkali metal silicate as the alkali carrier.
Claim 8
Dependent Claim
42 words
The rinsing composition as claimed in claim 1, containing, as the surfactant, as least one substance selected from the group consisting of chlorine-stable block polymers of long chain aliphatic alcohols with ethylene oxide and/or propylene oxide groups or modified fatty alcohol polyglycolethers.
References Cited (Backward Citations)
US3941710A
Cited
US4031022A
Cited
DE2435479A1
Cited
US4237024A
Cited
US4664839A
Cited
US4728443A
Cited
US4608188A
Cited
EP0217732A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-09-24 | 1994-03-26 | 1994-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-09-24 | 1998-03-26 | 1998-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-09-24 | 2002-03-26 | 2002-09-25 | $7700.00 | Window Closed / Lapsed |