US3986979A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for making combination wetting-dispersing agent
Assignee: Westvaco Corp
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Filing: 1971-09-23
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Granted: 1976-10-19
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Expires: 1991-09-23
Abstract
Abstract A process for making a wetting-dispersing agent whereby an aqueous mixture of a sulfonated lignin dispersing agent and an anionic or nonionic wetting agent in a weight ratio of dispersing agent to wetting agent of from about 19:1 to 1:3 are dried together to form a single product for use as a surfactant in pesticide formulations.
Inventors
- 👤 Howard H. Moorer
- 👤 Charles W. Sandefur
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 04:06
CPC Classifications
A; A01; A01N; A01N25/00; A01N25/30; Y; Y10; Y10S; Y10S516/00; Y10S516/01; Y10S516/02; Y10S516/03; Y10S516/04; Y10S516/05
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
66 words
A process for making a single wetting-dispersing agent which comprises, spray drying together a mixture of from 25 to 95 percent by weight of a sulfonated lignin dispersing agent and 75 to 5 percent by weight of an anionic wetting agent from the group consisting of sulfated fatty alcohols, sulfated olefins, sulfated amide condensates, alkyl-aryl polyether sulfates, alkyl sulfonates, sulfonated amides, sulfonated ethers and alkyl-aryl sulfonates.
Claim 2
Dependent Claim
66 words
A process for making a single wetting-dispersing agent which comprises, spray drying together a mixture of from 25 to 95 percent by weight of a sulfonated lignin dispersing agent and 75 to 5 percent by weight of an anionic wetting agent from the group consisting of sulfated fatty alcohols, sulfated olefins, sulfated amide condensates, alkyl-aryl polyether sulfates, alkyl sulfonates, sulfonated amides, sulfonated ethers and alkyl-aryl sulfonates.
Claim 3
Dependent Claim
69 words
A process for making a single wetting-dispersing agent which comprises, spray drying together a mixture of from 25 to 95 percent by weight of a sulfonated lignin dispersing agent and 75 to 5 percent by weight of a nonionic wetting agent from the group consisting of fatty acid-alkanolamine condensates, ethylene oxide adducts of fatty acids, ethylene oxide adducts of fatty alcohols, alkyl-aryl polyether alcohols and polypropylene glycolethylene oxide condensates.
Claim 4
Dependent Claim
69 words
A process for making a single wetting-dispersing agent which comprises, spray drying together a mixture of from 25 to 95 percent by weight of a sulfonated lignin dispersing agent and 75 to 5 percent by weight of a nonionic wetting agent from the group consisting of fatty acid-alkanolamine condensates, ethylene oxide adducts of fatty acids, ethylene oxide adducts of fatty alcohols, alkyl-aryl polyether alcohols and polypropylene glycolethylene oxide condensates.
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) | 1979-10-19 | 1980-04-19 | 1980-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-10-19 | 1984-04-19 | 1984-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-10-19 | 1988-04-19 | 1988-10-19 | $7700.00 | Window Closed / Lapsed |