US4705665A
Expired / Lapsed
US
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Method for inhibiting oxidation of ferrous metals with alkyl glycosides and composition for cleaning ferrous metals
Assignee: Henkel AG and Co KGaA
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Filing: 1985-12-13
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Granted: 1987-11-10
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Expires: 2005-12-13
Abstract
Abstract Glycosides and polyglycosides are described having the formula R(OG).sub.x wherein R is an aliphatic hydrocarbon radical having from 1 to 25 carbon atoms or is a radical with the formula R 1 (OR 2 ) n which does not have more than 25 carbon atoms and wherein n=0 to 24 and R 1 and R 2 are aliphatic hydrocarbon radicals, G is selected from the group consisting of fructose, glucose, mannose, galactose, talose, gulose, allose, altrose, idose, arabinose, xylose, lyxose, ribose or mixtures thereof, and x is 1 to 30 which glycosides and polyglycosides inhibit oxidation and acid attack of ferrous metals.
Inventors
- 👤 Arshad H. Malik
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 10:24
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/16; C11D3/20; C11D3/22; C11D3/221; C09; C09K; C09K8/00; C09K8/60; C09K8/62; C09K8/72; C09K8/74; C11D1/00; C11D1/66; C11D1/662; C11D7/00; C11D7/02; C11D7/04; C11D7/08; C23; C23G; C23G1/00; C23G1/02; C23G1/04; C23G1/06
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
135 words
A method for inhibiting oxidation or acid attack of a ferrous metal comprising: contacting the surface of the ferrous metal with a solution which has less than about 2 percent by weight inorganic salts and which solution includes from about 1 to about 20 percent by weight of a glycoside having the formula R(OG).sub.x wherein R is an aliphatic hydrocarbon radical having from 1 to 25 carbon atoms or is a radical with the formula R 1 (OR 2 ) n which does not have more than 25 carbon atoms and wherein n=0 to 24 and R 1 and R 2 are aliphatic hydrocarbon radicals, G is selected from the group consisting of fructose, glucose, mannose, galactose, talose, gulose, allose, altrose, idose, arabinose, xylose, lyxose, ribose or mixtures thereof, and x is 1 to 30.
Claim 2
Independent Claim
135 words
A method for inhibiting oxidation or acid attack of a ferrous metal comprising: contacting the surface of the ferrous metal with a solution which has less than about 2 percent by weight inorganic salts and which solution includes from about 1 to about 20 percent by weight of a glycoside having the formula R(OG).sub.x wherein R is an aliphatic hydrocarbon radical having from 1 to 25 carbon atoms or is a radical with the formula R 1 (OR 2 ) n which does not have more than 25 carbon atoms and wherein n=0 to 24 and R 1 and R 2 are aliphatic hydrocarbon radicals, G is selected from the group consisting of fructose, glucose, mannose, galactose, talose, gulose, allose, altrose, idose, arabinose, xylose, lyxose, ribose or mixtures thereof, and x is 1 to 30.
Claim 3
Dependent Claim
24 words
A method as recited in claim 1 wherein G is glucose, the solution is an aqueous solution and R is an aliphatic hydrocarbon radical.
Claim 4
Dependent Claim
26 words
A method as recited in claim 2 wherein the solution is aqueous and has a pH in the range of from about 0.1 to about 4.
Claim 5
Dependent Claim
23 words
A method as recited in claim 2 wherein the glycoside comprises from about 1 to about 10 percent by weight of the solution.
Claim 6
Dependent Claim
33 words
A method as recited in claim 2 wherein R is an alkyl group which is a straight chain or is a branched chain having 4 to 13 carbon atoms and x=1 to 10.
Claim 7
Dependent Claim
33 words
A method as recited in claim 3 wherein R is an alkyl group which is a straight chain or is a branched chain having 4 to 13 carbon atoms and x=1 to 10.
Claim 8
Dependent Claim
33 words
A method as recited in claim 4 wherein R is an alkyl group which is a straight chain or is a branched chain having 9 to 13 carbon atoms and x=1 to 4.
Claim 9
Dependent Claim
33 words
A method as recited in claim 3 wherein R is an alkyl group which is a straight chain or is a branched chain having 9 to 13 carbon atoms and x=1 to 4.
Claim 10
Dependent Claim
28 words
A method as recited in claim 4 wherein R is a straight chain or is a branched chain having 9 to 13 carbon atoms and x=1 to 4.
Claim 11
Dependent Claim
14 words
A method as recited in claim 1 wherein said method is for inhibiting oxidation.
Claim 12
Dependent Claim
14 words
A method as recited in claim 2 wherein said method is for inhibiting oxidation.
Claim 13
Dependent Claim
14 words
A method as recited in claim 5 wherein said method is for inhibiting oxidation.
Claim 14
Dependent Claim
18 words
A method as recited in claim 12 wherein the solution has a pH of about 7 or below.
Claim 15
Dependent Claim
9 words
A method as recited in claim 1 wherein n=0.
Claim 16
Dependent Claim
9 words
A method as recited in claim 2 wherein n=0.
Claim 17
Dependent Claim
9 words
A method as recited in claim 3 wherein n=0.
Claim 18
Dependent Claim
9 words
A method as recited in claim 4 wherein n=0.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1990-11-09 | 1991-05-11 | 1991-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-11-09 | 1995-05-11 | 1995-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-11-09 | 1999-05-11 | 1999-11-10 | $7700.00 | Window Closed / Lapsed |