US4302253A
Expired / Lapsed
US
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Thickeners for acid cleaning compositions
Assignee: Vanderbilt Chemicals LLC
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Filing: 1980-02-19
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Granted: 1981-11-24
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Expires: 2000-02-19
Abstract
Abstract This invention relates to storage stable liquid cleaning compositions for use on porcelain type surfaces wherein said compositions comprise an aqueous mineral acid solution thickened with smectite clay and xanthan gum, a stabilizing amount of 1-hydroxyethyl-2-alkylimidazoline and optionally, a chelate. The compositions may further contain a disinfectant.
Inventors
- 👤 Peter A. Ciullo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 18:32
CPC Classifications
C; C11; C11D; C11D17/00; C11D17/0008; C11D17/0013; C08; C08L; C08L5/00; C11D7/00; C11D7/02; C11D7/04; C11D7/08; C11D7/22; C11D7/32; C11D7/3209; C11D7/3245
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
60 words
A synergistic thickening composition comprising (a) swellable smectite clay, (b) xanthan gum and (c) imidazolines of the structural formula ##STR2## wherein R represents C 7-17 -alkyl radical derived from fatty acids and the ratio of the smectite to xanthan gum is about 9:1 to about 1:1 and the ratio of the smectite to the imidazoline about 9:1 to about 1:2.
Claim 2
Dependent Claim
60 words
A synergistic thickening composition comprising (a) swellable smectite clay, (b) xanthan gum and (c) imidazolines of the structural formula ##STR2## wherein R represents C 7-17 -alkyl radical derived from fatty acids and the ratio of the smectite to xanthan gum is about 9:1 to about 1:1 and the ratio of the smectite to the imidazoline about 9:1 to about 1:2.
Claim 3
Independent Claim
67 words
A method of thickening acid cleaning compositions the steps of which comprise: (a) adding a dry blend of swellable smectite clay and xanthan gum to water; (b) hydrating by mixing; (c) adding imidazoline of the structural formula ##STR3## wherein R represents C 7-17 -alkyl radical derived from fatty acids; (d) dispersing the imidazoline under low shear conditions; (e) blending in mineral acid to produce a viscous liquid.
Claim 4
Independent Claim
67 words
A method of thickening acid cleaning compositions the steps of which comprise: (a) adding a dry blend of swellable smectite clay and xanthan gum to water; (b) hydrating by mixing; (c) adding imidazoline of the structural formula ##STR3## wherein R represents C 7-17 -alkyl radical derived from fatty acids; (d) dispersing the imidazoline under low shear conditions; (e) blending in mineral acid to produce a viscous liquid.
Claim 5
Dependent Claim
20 words
A method according to claim 2 wherein the imidazoline is dispersed in the presence of tetrasodium salt of ethylenediaminetetraacetic acid.
Claim 6
Dependent Claim
85 words
A liquid cleaning composition comprising (a) up to about 30 percent by weight of mineral acid; (b) a thickening agent consisting of (i) swellable smectite clay; (ii) xanthan gum; and (iii) imidazolines of the structural formula ##STR4## wherein R represents C 7-17 -alkyl radical derived from fatty acids and wherein the ratio of the smectite to xanthan gum is about 9:1 to about 1:1 and the ratio of the smectite to the imidazoline about 9:1 to about 1:2 in an effective amount; and (c) water.
Claim 7
Dependent Claim
85 words
A liquid cleaning composition comprising (a) up to about 30 percent by weight of mineral acid; (b) a thickening agent consisting of (i) swellable smectite clay; (ii) xanthan gum; and (iii) imidazolines of the structural formula ##STR4## wherein R represents C 7-17 -alkyl radical derived from fatty acids and wherein the ratio of the smectite to xanthan gum is about 9:1 to about 1:1 and the ratio of the smectite to the imidazoline about 9:1 to about 1:2 in an effective amount; and (c) water.
Claim 8
Dependent Claim
18 words
A composition according to claim 4 wherein the imidazoline is substituted by alkyl radical derived from oleic acid.
Claim 9
Dependent Claim
18 words
A composition according to claim 4 wherein the imidazoline is substituted by alkyl radical derived from tall oil.
Claim 10
Dependent Claim
18 words
A composition according to claim 4 wherein the imidazoline is substituted by alkyl radical derived from caprylic acid.
Claim 11
Dependent Claim
11 words
A composition according to claim 4 which further contains a disinfectant.
Claim 12
Dependent Claim
13 words
A composition according to claim 4 wherein the mineral acid is hydrochloric acid.
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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) | 1984-11-23 | 1985-05-25 | 1985-11-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-11-23 | 1989-05-25 | 1989-11-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-11-23 | 1993-05-25 | 1993-11-24 | $7700.00 | Window Closed / Lapsed |