US4096089A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Salt of sulfonated styrene oligomer, method of preparation thereof, and use thereof as dispersing agent and viscosity reducer
Assignee: Sybron Chemical Holdings Inc
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Filing: 1977-03-08
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Granted: 1978-06-20
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Expires: 1997-03-08
Abstract
Abstract A method of effectively utilizing styrene still bottoms waste material is described. The waste material is primarily styrene oligomer which is sulfonated and used as a dispersing agent.
Inventors
- 👤 William J. Shibe, Jr.
- 👤 William Wood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 06:49
CPC Classifications
C; C07; C07C; C07C309/00; C09; C09K; C09K23/00; C09K23/12; Y; Y10; Y10S; Y10S516/00; Y10S516/01; Y10S516/03
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
13 words
A compound having the formula ##STR2## where X is Na, K, or ammonium.
Claim 2
Dependent Claim
13 words
A compound having the formula ##STR2## where X is Na, K, or ammonium.
Claim 3
Dependent Claim
22 words
A method of obtaining compound of claim 1 comprising forming an aromatic sulfonate of styrene still oligomer and subsequently forming a salt.
Claim 4
Dependent Claim
12 words
The method of claim 2 wherein the salt is an alkaline salt.
Claim 5
Dependent Claim
21 words
A method of dispersing a solid in water comprising adding the compound of claim 1 to said water containing said solid.
Claim 6
Dependent Claim
21 words
A method of reducing viscosity of a water dispersion comprising adding thereto an aqueous solution of the compound of claim 1.
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) | 1981-06-19 | 1981-12-19 | 1982-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-06-19 | 1985-12-19 | 1986-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-06-19 | 1989-12-19 | 1990-06-20 | $7700.00 | Window Closed / Lapsed |