Patent US3928448A successfully refreshed from Google Patents.
US3928448A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dichlorobutene/dimethylamine ionene polymer
Assignee: ChampionX LLC
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Filing: 1974-07-15
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Granted: 1975-12-23
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Expires: 1994-07-15
Abstract
Abstract Novel trans-1,4-dichloro-2-butene-dimethylamine ionene chloride polymers are prepared and used in water clarification applications, as an emulsion breaker, sludge dewatering and drainage aid, as a flocculant in treating water and as coagulants in sewage and waste stream applications.
Inventors
- 👤 Edward G Ballweber
- 👤 Wun Ten Tai
- 👤 Radhakrishnan Selvarajan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:57
CPC Classifications
C; C08; C08G; C08G73/00; C08G73/02; C08G73/0206; C08G73/0213; C08G73/0226; C02; C02F; C02F1/00; C02F1/52; C02F1/54; Y; Y10; Y10S; Y10S524/00; Y10S524/922
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
12 words
A TRANS-1/4-DICHLORO-2-BUTENE-DIMETHYLAMINE IONENE CHLORIDE POLYMER WITH REPEATING UNITS REPRESENTED BY THE FORMULA:
Claim 2
Dependent Claim
12 words
A TRANS-1/4-DICHLORO-2-BUTENE-DIMETHYLAMINE IONENE CHLORIDE POLYMER WITH REPEATING UNITS REPRESENTED BY THE FORMULA:
Claim 3
Dependent Claim
33 words
A trans-1,4-dichloro-2-butene-dimethylamine ionene chloride polymer of claim 1 wherein said polymer is cross-linked with ethylene diamine wherein the formula weight ratio of said polymer to said ethylene diamine is between 20:1 to 100:1.
Claim 4
Dependent Claim
10 words
A solution of the composition of claim 1 in water.
Claim 5
Dependent Claim
10 words
A solution of a composition of claim 2 in water.
Claim 6
Independent Claim
16 words
A method of water treatment to remove solids comprising treating said liqUid with: trans-1,4-dichloro-2-butene-dimethylamine ionene chloride.
Claim 7
Independent Claim
16 words
A method of water treatment to remove solids comprising treating said liqUid with: trans-1,4-dichloro-2-butene-dimethylamine ionene chloride.
References Cited (Backward Citations)
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US3629161A
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US3778476A
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US3632507A
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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) | 1978-12-22 | 1979-06-23 | 1979-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-22 | 1983-06-23 | 1983-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-22 | 1987-06-23 | 1987-12-23 | $7700.00 | Window Closed / Lapsed |