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Patent US3720616A successfully refreshed from Google Patents.
US3720616A
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Hydroxybenzotriazoles as metal deactivators
Assignee: Novartis Corp
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Filing: 1971-01-14
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Granted: 1973-03-13
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Expires: 1991-01-14
Abstract
Abstract 4-Hydroxy-5-alkyl-benzotriazoles are described as useful corrosion or tarnish inhibitors on metal surfaces, especially on copper, and as metal deactivators in functional fluids. Compositions containing the novel benzotriazoles or 4-hydroxybenzotriazole and a process for making these compounds in a particularly advantageous manner are also described.
Inventors
- 👤 D Randell
- 👤 E Cox
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:12
CPC Classifications
C; C07; C07D; C07D249/00; C07D249/16; C07D249/18; C08; C08K; C08K5/00; C08K5/16; C08K5/34; C08K5/3467; C08K5/3472; C08K5/3475; C10; C10M; C10M133/00; C10M133/02; C10M133/38; C10M133/44; C23; C23F; C23F11/00; C23F11/08; C23F11/10; C23F11/14; C23F11/149; C23G; C23G1/00; C23G1/14; C23G1/16; C23G1/18; C10M2207/00; C10M2207/28; C10M2207/281; C10M2207/282; C10M2207/283; C10M2207/286; C10M2215/00; C10M2215/02; C10M2215/06; C10M2215/064; C10M2215/22; C10M2215/221; C10M2215/225; C10M2215/226; C10M2215/24; C10M2215/30; C10N; C10N2030/00; C10N2030/12; C10N2040/00; C10N2040/08; C10N2040/135; C10N2040/14; C10N2040/16; C10N2040/17; Y; Y10; Y10S; Y10S524/00; Y10S524/925
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
79 words
A composition comprising (1) a functional material susceptible of deterioration of function when in contact with a metal, said functional material selected from the group consisting of natural lubricants, synthetic hydraulic fluids, mineral oil-based turbine and transformer oils, varnishes, wax polishes, rubber, polypropylene, polyvinyl chloride, acrylonitrile/butadiene/styrene terpolymer and aqueous anti-freeze and coolant mixtures containing glycol compositions, and (2) in metal-deactivating amount, a compound of the formula wherein X represents hydrogen or alkyl of from one to four carbon atoms.
Claim 2
Dependent Claim
79 words
A composition comprising (1) a functional material susceptible of deterioration of function when in contact with a metal, said functional material selected from the group consisting of natural lubricants, synthetic hydraulic fluids, mineral oil-based turbine and transformer oils, varnishes, wax polishes, rubber, polypropylene, polyvinyl chloride, acrylonitrile/butadiene/styrene terpolymer and aqueous anti-freeze and coolant mixtures containing glycol compositions, and (2) in metal-deactivating amount, a compound of the formula wherein X represents hydrogen or alkyl of from one to four carbon atoms.
Claim 3
Dependent Claim
37 words
A composition as described in claim 1 wherein the proportion of the compound of formula II is within the range of from 0.01 to 10 percent by weight, based on the total weight of the functional material.
Claim 4
Dependent Claim
37 words
A composition as described in claim 1, wherein the proportion of the compound of formula II is within the range of from 0.1 to 5 percent by weight based on the total weight of the functional material.
Claim 5
Dependent Claim
33 words
A composition as described in claim 1, wherein the functional material is a natural or synthetic lubricant, an hydraulic fluid, a mineral oil-based turbine or transformer oil, a varnish or, a wax polish.
Claim 6
Dependent Claim
20 words
A composition as described in claim 1, wherein the functional material is rubber, polypropylene, polyvinyl chloride or an acrylonitrile/butadiene/styrene terpolymer.
Claim 7
Dependent Claim
18 words
A composition as described in claim 1, wherein the functional material is an aqueous glycol-containing anti-freeze or coolant.
Claim 8
Dependent Claim
20 words
A composition as described in claim 4, wherein the functional material is a natural or synthetic lubricant containing an antioxidant.
Claim 9
Dependent Claim
13 words
A composition as described in claim 7, wherein the antioxidant is dioctyl diphenylamine.
References Cited (Backward Citations)
US3413227A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-03-12 | 1976-09-11 | 1977-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-03-12 | 1980-09-11 | 1981-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-03-12 | 1984-09-11 | 1985-03-13 | $7700.00 | Window Closed / Lapsed |