US4851149A
Expired / Lapsed
US
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Non-toxic acid cleaner corrosion inhibitors
Assignee: Henkel Corp
•
Filing: 1987-09-21
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Granted: 1989-07-25
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Expires: 2007-09-21
Abstract
Abstract Acid cleaning/pickling compositions for metal surfaces containing (A) at least one protein-derived polymer, sugar-derived polymer, sorbitol, tannin, or vinyl-based polymer, (B) at least one iodine or iodine-affording compound; acids solutions prepared therefrom; and methods for their use.
Inventors
- 👤 Carmen M. Carandang
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 06:26
CPC Classifications
C; C10; C10M; C10M129/00; C10M129/02; C10M129/26; C10M129/28; C10M129/38; C10M129/40; C23; C23F; C23F11/00; C23F11/08; C23F11/10; C23F11/12; C23F11/124; C23F11/126; C23F11/14; C23F11/141; C23F11/143; C10M2201/00; C10M2201/02; C10M2207/00; C10M2207/10; C10M2207/12; C10M2207/121; C10M2207/123; C10M2207/125; C10M2207/126; C10M2207/128; C10M2207/129; C10M2207/22; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/042; C10N; C10N2010/00; C10N2010/02; C10N2010/04; C10N2030/00; C10N2030/12; C10N2040/00; C10N2040/08; C10N2040/20
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
107 words
A corrosion inhibitor dry concentrate, for use in an acid cleaning composition, which does not produce toxic residues and which consists essentially of: (A) about 1 to about 80% by weight of a gelatin hydrolysate; (B) about 0.1 to about 15% by weight of at least one iodine or iodine-ion affording composition; (C) up to about 80% by weight of an inert solid diluent; (D) up to 10% by weight of a solid dedusting agent; and (E) from about 1 to about 10% by weight of a polymer containing vinyl pyrrolidone monomeric units and having a viscosity average molecular weight of from about 5,000 to about 50,000.
Claim 2
Dependent Claim
107 words
A corrosion inhibitor dry concentrate, for use in an acid cleaning composition, which does not produce toxic residues and which consists essentially of: (A) about 1 to about 80% by weight of a gelatin hydrolysate; (B) about 0.1 to about 15% by weight of at least one iodine or iodine-ion affording composition; (C) up to about 80% by weight of an inert solid diluent; (D) up to 10% by weight of a solid dedusting agent; and (E) from about 1 to about 10% by weight of a polymer containing vinyl pyrrolidone monomeric units and having a viscosity average molecular weight of from about 5,000 to about 50,000.
Claim 3
Dependent Claim
69 words
A concentrate according to claim 1, wherein the amount of gelatin hydrolysate is between about 20 and about 45% by weight, the amount of iodine or iodine ion affording composition is between about 2 and about 6% by weight, the amount of inert solid diluent is between about 50 and about 80% by weight, and the amount of dedusting agent is between about 0.5 and about 3% by weight.
Claim 4
Dependent Claim
14 words
A concentrate according to claim 2, wherein the inert solid diluent is sodium sulfate.
Claim 5
Dependent Claim
72 words
A dry corrosion inhibitor concentrate, for use in an acid cleaning composition, which does not produce toxic residues and which consists essentially of: (A) about 1 to about 80% by weight of a gelatin hydrolysate; (B) about 0.1 to about 15% by weight of ethylene diamine dihydroiodide; (C) about 5 to about 80% by weight of an inert solid diluent; and (D) up to 10% by weight of a solid dedusting agent.
Claim 6
Dependent Claim
72 words
A dry corrosion inhibitor concentrate, for use in an acid cleaning composition, which does not produce toxic residues and which consists essentially of: (A) about 1 to about 80% by weight of a gelatin hydrolysate; (B) about 0.1 to about 15% by weight of ethylene diamine dihydroiodide; (C) about 5 to about 80% by weight of an inert solid diluent; and (D) up to 10% by weight of a solid dedusting agent.
Claim 7
Dependent Claim
66 words
A concentrate according to claim 4, wherein the amount of gelatin hydrolysate is between about 20 and about 45% by weight, the amount of ethylene diamine dihydroiodide is between about 2 and about 6% by weight, the amount of inert solid diluent is between about 50 and about 80% by weight, and the amount of dedusting agent is between about 0.5 and about 3% by weight.
Claim 8
Dependent Claim
14 words
A concentrate according to claim 5, wherein the inert solid diluent is sodium sulfate.
Claim 9
Dependent Claim
115 words
An aqueous corrosion inhibitor solution concentrate, consisting essentially of: (A) about 1 to about 50% by weight of a gelatin hydrolysate; (B) about 0.1 to about 15% by weight of at least one iodine or iodide ion affording composition; (C) about 1 to about 20% by weight of at least one surfactant selected from the group consisting of anionic, nonionic, and amphoteric surfactants; (D) from about 1 to about 10% by weight of a polymer containing vinyl pyrrolidone monomeric units and having a viscosity average molecular weight of from about 5,000 to about 50,000; (E) from about 0.5 to about 5% by weight of an acidifier; and (F) water as needed to bring to 100%.
Claim 10
Dependent Claim
115 words
An aqueous corrosion inhibitor solution concentrate, consisting essentially of: (A) about 1 to about 50% by weight of a gelatin hydrolysate; (B) about 0.1 to about 15% by weight of at least one iodine or iodide ion affording composition; (C) about 1 to about 20% by weight of at least one surfactant selected from the group consisting of anionic, nonionic, and amphoteric surfactants; (D) from about 1 to about 10% by weight of a polymer containing vinyl pyrrolidone monomeric units and having a viscosity average molecular weight of from about 5,000 to about 50,000; (E) from about 0.5 to about 5% by weight of an acidifier; and (F) water as needed to bring to 100%.
Claim 11
Dependent Claim
65 words
A concentrate according to claim 7, wherein the amount of gelatin hydrolysate is between about 10 to about 15% by weight; the amount of iodine or iodine ion affording composition is between about 2 and about 8% by weight; the amount of surfactant is between about 12 to about 16% by weight; and the amount of acidifier is between about 1.5 and 2.5% by weight.
Claim 12
Dependent Claim
76 words
An aqueous corrosion inhibitor solution concentrate, consisting essentially of: (A) about 1 to about 50% by weight of a gelatin hydrolysate; (B) about 0.1 to about 15% by weight of ethylene diamine dihydroiodide; (C) about 1 to about 20% by weight of at least one surfactant selected from the group consisting of anionic, nonionic, and amphoteric surfactants; (D) from about 0.5 to about 5% by weight of an acidifier; and (E) water to bring to 100%.
Claim 13
Dependent Claim
76 words
An aqueous corrosion inhibitor solution concentrate, consisting essentially of: (A) about 1 to about 50% by weight of a gelatin hydrolysate; (B) about 0.1 to about 15% by weight of ethylene diamine dihydroiodide; (C) about 1 to about 20% by weight of at least one surfactant selected from the group consisting of anionic, nonionic, and amphoteric surfactants; (D) from about 0.5 to about 5% by weight of an acidifier; and (E) water to bring to 100%.
Claim 14
Dependent Claim
62 words
A concentrate according to claim 9, wherein the amount of gelatin hydrolysate is between about 10 to about 15% by weight; the amount of ethylene diamine dihydroiodide is between about 2 and about 8% by weight; the amount of surfactant is between about 12 to about 16% by weight; and the amount of acidifier is between about 1.5 and 2.5% by weight.
Claim 15
Dependent Claim
126 words
A corrosion inhibited acid cleaning composition consisting essentially of: (A) from about 1 to about 50% by weight of an acid; (B) a corrosion inhibiting effective amount of a concentrate consisting essentially of: (i) about 1 to about 80% by weight of a gelatin hydrolysate; (ii) about 0.1 to about 15% by weight of at least one iodine or iodine-ion affording composition; (iii) up to about 80% by weight of an inert solid diluent; (iv) up to 10% by weight of a solid dedusting agent; and (v) from about 1 to about 10% by weight of a polymer containing vinyl pyrrolidone monomeric units and having a viscosity average molecular weight of from about 5,000 to about 50,000; and: (C) water, if needed, to bring to 100%.
Claim 16
Dependent Claim
126 words
A corrosion inhibited acid cleaning composition consisting essentially of: (A) from about 1 to about 50% by weight of an acid; (B) a corrosion inhibiting effective amount of a concentrate consisting essentially of: (i) about 1 to about 80% by weight of a gelatin hydrolysate; (ii) about 0.1 to about 15% by weight of at least one iodine or iodine-ion affording composition; (iii) up to about 80% by weight of an inert solid diluent; (iv) up to 10% by weight of a solid dedusting agent; and (v) from about 1 to about 10% by weight of a polymer containing vinyl pyrrolidone monomeric units and having a viscosity average molecular weight of from about 5,000 to about 50,000; and: (C) water, if needed, to bring to 100%.
Claim 17
Dependent Claim
91 words
A corrosion inhibited acid cleaning composition consisting essentially of: (A) from about 1 to about 50% by weight of an acid; (B) a corrosion inhibiting effective amount of a concentrate consisting essentially of: (i) about 1 to about 80% by weight of a gelatin hydrolysate; (ii) about 0.1 to about 15% by weight of ethylene diamine dihydroiodide; (iii) about 5 to about 80% by weight of an inert solid diluent; and (iv) up to 10% by weight of a solid dedusting agent; and (C) water, if needed, to bring to 100%.
Claim 18
Dependent Claim
91 words
A corrosion inhibited acid cleaning composition consisting essentially of: (A) from about 1 to about 50% by weight of an acid; (B) a corrosion inhibiting effective amount of a concentrate consisting essentially of: (i) about 1 to about 80% by weight of a gelatin hydrolysate; (ii) about 0.1 to about 15% by weight of ethylene diamine dihydroiodide; (iii) about 5 to about 80% by weight of an inert solid diluent; and (iv) up to 10% by weight of a solid dedusting agent; and (C) water, if needed, to bring to 100%.
Claim 19
Dependent Claim
146 words
A corrosion inhibited acid cleaning composition consisting essentially of: (A) from about 1 to about 50% by weight of an acid; (B) a corrosion inhibiting effective amount of a concentrate consisting essentially of: (i) about 1 to about 50% by weight of a gelatin hydrolysate; (ii) about 0.1 to about 15% by weight of at least one iodine or iodide ion affording composition; (iii) about 1 to about 20% by weight of at least one surfactant selected from the group consisting of anionic, nonionic, and amphoteric surfactants; (iv) from about 1 to about 10% by weight of a polymer containing vinyl pyrrolidone monomeric units and having a viscosity average molecular weight of from about 5,000 to about 50,000; (v) from about 0.5 to about 5% by weight of an acidifier; and (vi) water to bring to 100%; and (C) water, if needed, to bring to 100%.
Claim 20
Dependent Claim
146 words
A corrosion inhibited acid cleaning composition consisting essentially of: (A) from about 1 to about 50% by weight of an acid; (B) a corrosion inhibiting effective amount of a concentrate consisting essentially of: (i) about 1 to about 50% by weight of a gelatin hydrolysate; (ii) about 0.1 to about 15% by weight of at least one iodine or iodide ion affording composition; (iii) about 1 to about 20% by weight of at least one surfactant selected from the group consisting of anionic, nonionic, and amphoteric surfactants; (iv) from about 1 to about 10% by weight of a polymer containing vinyl pyrrolidone monomeric units and having a viscosity average molecular weight of from about 5,000 to about 50,000; (v) from about 0.5 to about 5% by weight of an acidifier; and (vi) water to bring to 100%; and (C) water, if needed, to bring to 100%.
Claim 21
Dependent Claim
108 words
A corrosion inhibited acid cleaning composition consisting essentially of: (A) from about 1 to about 50% by weight of an acid; (B) a corrosion inhibiting effective amount of a concentrate consisting essentially of; (i) about 1 to about 50% by weight of a gelatin hydrolysate; (ii) about 0.1 to about 15% by weight of ethylene diamine dihydroiodide; (iii) about 1 to about 20% by weight of at least one surfactant selected from the group consisting of anionic, nonionic, and amphoteric surfactants; (iv) about 0.5 to about 5% by weight of an acidifier; and (v) water to bring to 100%; and (C) water, if needed, to bring to 100%.
Claim 22
Dependent Claim
108 words
A corrosion inhibited acid cleaning composition consisting essentially of: (A) from about 1 to about 50% by weight of an acid; (B) a corrosion inhibiting effective amount of a concentrate consisting essentially of; (i) about 1 to about 50% by weight of a gelatin hydrolysate; (ii) about 0.1 to about 15% by weight of ethylene diamine dihydroiodide; (iii) about 1 to about 20% by weight of at least one surfactant selected from the group consisting of anionic, nonionic, and amphoteric surfactants; (iv) about 0.5 to about 5% by weight of an acidifier; and (v) water to bring to 100%; and (C) water, if needed, to bring to 100%.
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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) | 1992-07-24 | 1993-01-23 | 1993-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-07-24 | 1997-01-23 | 1997-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-07-24 | 2001-01-23 | 2001-07-25 | $7700.00 | Window Closed / Lapsed |