US3948784A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Treatment of industrial grinding and cutting lubricants
Assignee: ChampionX LLC
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Filing: 1975-03-24
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Granted: 1976-04-06
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Expires: 1995-03-24
Abstract
Abstract A method of clarifying water-soluble lubricants used in industrial grinding and cutting using cationic polyelectrolytes.
Inventors
- 👤 Hobart M. Krillic
- 👤 Edward F. Leary
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 19:44
CPC Classifications
C; C10; C10M; C10M175/00; C10M175/04
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
85 words
A method of treating aqueous solutions of water-soluble lubricants containing suspended particles of water insoluble inorganics from the group consisting of metals, metallic oxides, silica and carbon which comprises the steps of: A. adding at least 0.5 ppm by weight of a cationic polyelectrolyte to said water-soluble solutions; B. dispersing said cationic polyelectrolyte and allowing the suspension to stand at least 2 minutes to allow flocculation and settling of said suspended particles to occur; and then, C. separating the water-soluble lubricant from the settled particles.
Claim 2
Independent Claim
85 words
A method of treating aqueous solutions of water-soluble lubricants containing suspended particles of water insoluble inorganics from the group consisting of metals, metallic oxides, silica and carbon which comprises the steps of: A. adding at least 0.5 ppm by weight of a cationic polyelectrolyte to said water-soluble solutions; B. dispersing said cationic polyelectrolyte and allowing the suspension to stand at least 2 minutes to allow flocculation and settling of said suspended particles to occur; and then, C. separating the water-soluble lubricant from the settled particles.
Claim 3
Dependent Claim
29 words
The method of claim 1 wherein the insoluble inorganic is silica and the amount of the cationic polyelectrolyte added in Step A is in the range of 8-250 ppm.
Claim 4
Dependent Claim
34 words
The method of claim 1 wherein the insoluble inorganic is a metal, metallic oxide or carbon and the amount of the cationic polyelectrolyte added in Step A is in the range of 0.5-1.8 ppm.
Claim 5
Dependent Claim
37 words
The method of claim 1 wherein the cationic polyelectrolyte is a quaternary ammonium polyamine formed by reaction of an alkylene dihalide, a water-soluble basic nitrogen compound from the group consisting of ammonia and the lower ethylene polyamines.
Claim 6
Dependent Claim
44 words
The method of claim 1 wherein the cationic polyelectrolyte is a quaternary ammonium polyamine formed by reaction of an alkylene dihalide, a water-soluble basic nitrogen compound from the group consisting of ammonia the the lower ethylene polyamine, and a lower alkyl halide quaternizing agent.
Claim 7
Dependent Claim
44 words
The method of claim 4 wherein the alkylene dihalide is chosen from the group consisting of ethylene dichloride and 1,2-propylene dichloride and the water-soluble basic nitrogen compound is chosen from the group consisting of ammonia, ethylene diamine, diethylene triamine, tetraethylene pentamine and triethyl pentamine.
Claim 8
Dependent Claim
20 words
The method of claim 3 wherein the alkylene dihalide is ethylene dichloride and the water-soluble basic nitrogen compound is ammonia.
Claim 9
Dependent Claim
61 words
The method of claim 5 wherein the alkylene dihalide is chosen from the group consisting of ethylene dichloride and 1,2-propylene dichloride, the water-soluble basic nitrogen compound is chosen from the group consisting of ammonia, ethylene diamine, diethylene triamine, tetraethylene pentamine and triethyl pentamine, and the quaternizing agent is chosen from the group consisting of methyl chloride, ethyl chloride and propyl chloride.
Claim 10
Dependent Claim
24 words
The method of claim 5 wherein the alkylene dihalide is ethylene dichloride, the water-soluble basic nitrogen compound and the quaternizing agent is methyl chloride.
Claim 11
Dependent Claim
15 words
The method of claim 1 wherein the cationic polyelectrolyte is an epihalohydrin-alkylene polyamine condensation copolymer.
Claim 12
Dependent Claim
47 words
The method of claim 10 wherein the epichlorohydrin is chosen from the group consisting of epichlorohydrin, epibromohydrin and epiiodohydrin, and the alkylene polyamine has the general formula: H.sub.2 N(C.sub.n H.sub.2n NH).sub.x H where n is an integer from 1 to 4 and x is 1 or more.
Claim 13
Dependent Claim
17 words
The method of claim 11 wherein the epihalohydrin is epichlorohydrin and the alkylene polyamine is ethylene diamine.
Claim 14
Dependent Claim
26 words
The method of claim 1 wherein the cationic polyelectrolyte is a polyquaternary compound formed by the reaction of a secondary amine and a difunctional epoxy compound.
Claim 15
Dependent Claim
46 words
The method of claim 13 wherein the second amine is chosen from the group consisting of dimethylamine, ethylmethylamine, diethylamine, propylmethylamine, propylethylamine, dipropylethylamine, dipropylamine, dibutylamine, propylbutylamine, ethylbutylamine, methylbutylamine, pentylmethylamine, pentylethylamine and pentylpropylamine, and the difunctional epoxide is chosen from the group consisting of epichlorohydrin, epibromohydrin and epiiodohydrin.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-04-06 | 1979-10-06 | 1980-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-04-06 | 1983-10-06 | 1984-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-04-06 | 1987-10-06 | 1988-04-06 | $7700.00 | Window Closed / Lapsed |