US4770814A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shear stable antimisting formulations
Assignee: Dow Chemical Co
•
Filing: 1983-08-31
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Granted: 1988-09-13
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Expires: 2003-08-31
Abstract
Abstract Shear stable antimisting properties are provided to a wide variety of formulations comprising aqueous liquids through the use of a viscoelastic surfactant which comprises a surfactant compound having a hydrophobic moiety chemically bonded to an ionic, hydrophilic moiety and an electrolyte having a moiety that is capable of associating with the surfactant ion. Optionally, an additional amount of electrolyte can be added to the viscoelastic surfactant to further reduce misting. The viscoelastic surfactant can also be a nonionic surfactant.
Inventors
- 👤 Gene D. Rose
- 👤 Keith G. Seymour
- 👤 Arthur S. Teot
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 19:46
CPC Classifications
C; C10; C10M; C10M173/00; C10M173/02; C10M127/00; C10M127/04; C10M129/00; C10M129/02; C10M129/26; C10M129/48; C10M129/54; C10M131/00; C10M131/08; C10M131/12; C10M133/00; C10M133/02; C10M133/04; C10M133/06; C10M133/38; C10M133/40; C10M135/00; C10M135/08; C10M135/10; C10M135/20; C10M135/22; C10M159/00; C10M159/02; C10M159/04; C10M2201/00; C10M2201/02; C10M2201/06; C10M2201/063; C10M2203/00; C10M2203/06; C10M2203/10; C10M2203/102; C10M2203/104; C10M2203/106; C10M2203/108; C10M2207/00; C10M2207/02; C10M2207/021; C10M2207/022; C10M2207/023; C10M2207/10; C10M2207/14; C10M2207/142; C10M2207/144; C10M2207/146; C10M2209/00; C10M2209/10; C10M2209/103; C10M2211/00; C10M2211/04; C10M2211/042; C10M2211/044; C10M2211/06; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/044; C10M2215/06; C10M2215/22; C10M2215/221; C10M2215/225; C10M2215/226; C10M2215/24; C10M2215/26; C10M2215/30; C10M2219/00; C10M2219/04; C10M2219/042; C10M2219/044; C10M2219/08; C10M2219/082; C10M2219/083; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/042; C10M2223/06; C10M2223/063; C10M2223/065; C10N; C10N2010/00; C10N2010/02; C10N2010/04; C10N2040/00; C10N2040/20; C10N2040/22; C10N2050/00; C10N2050/01; Y; Y10; Y10S; Y10S516/00; Y10S516/01; Y10S516/06; Y10S516/07; Y10T; Y10T137/00; Y10T137/0318; Y10T137/0391
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
101 words
A method for imparting shear stable antimisting properties to aqueous liquids in those processes where said liquids are employed in the form of controlled sprays, which method comprises adding to said aqueous liquid a functionally effective amount of a surfactant compound represented by the formula: R.sub.1 (Y.sup.⊕)X.sup.⊖ wherein R 1 is a hydrophobic moiety, Y.sup.⊕ is a cationic solubilizing moiety chemically bonded to R 1 , and X.sup.⊖ is a counterion capable of associating with Y.sup.⊖ to form a viscoelastic surfactant and an electrolyte having a moiety that is capable of associating with the surfactant ion to form a viscoelastic surfactant.
Claim 2
Independent Claim
101 words
A method for imparting shear stable antimisting properties to aqueous liquids in those processes where said liquids are employed in the form of controlled sprays, which method comprises adding to said aqueous liquid a functionally effective amount of a surfactant compound represented by the formula: R.sub.1 (Y.sup.⊕)X.sup.⊖ wherein R 1 is a hydrophobic moiety, Y.sup.⊕ is a cationic solubilizing moiety chemically bonded to R 1 , and X.sup.⊖ is a counterion capable of associating with Y.sup.⊖ to form a viscoelastic surfactant and an electrolyte having a moiety that is capable of associating with the surfactant ion to form a viscoelastic surfactant.
Claim 3
Dependent Claim
12 words
A method of claim 1 wherein said electrolyte is an inorganic electrolyte.
Claim 4
Dependent Claim
12 words
A method of claim 1 wherein said electrolyte is an organic electrolyte.
Claim 5
Dependent Claim
10 words
A method of claim 3 wherein said counterion is salicylate.
Claim 6
Dependent Claim
24 words
A method of claim 1 wherein said hydrophobic moiety is selected from a member of the group consisting of cetyltrimethylammonium, oleyltrimethylammonium, erucyltrimethylammonium and cetylpyridinium.
Claim 7
Dependent Claim
13 words
A method of claim 1 wherein said surfactant compound comprises a fluoroaliphatic species.
Claim 8
Dependent Claim
20 words
A method of claim 6 wherein the aqueous liquid comprises an emulsion of an immiscible liquid in the aqueous liquid.
Claim 9
Dependent Claim
32 words
A method of claim 1 wherein the surfactant is employed in an amount from about 0.01 to about 10 weight percent based on the weight of the surfactant and the aqueous liquid.
Claim 10
Independent Claim
116 words
A method for imparting shear stable antimisting properties to aqueous liquids in those processes where said liquids are employed in the form of controlled sprays, which method comprises adding to said aqueous liquid a functionally effective amount of (A) a surfactant compound represented by the formula: R.sub.1 (Y.sup.⊕)X.sup.⊖ wherein R 1 is a hydrophobic moiety, Y.sup.⊕ is a cationic solubilizing moiety chemically bonded to R 1 , and X.sup.⊕ is a counterion capable of associating with Y.sup.⊕ to form a viscoelastic surfactant and (B) an electrolyte which can associate as the counterion with the surfactant ion to form a viscoelastic surfactant in an additional amount sufficient to further reduce the misting exhibited by said aqueous liquid.
Claim 11
Independent Claim
116 words
A method for imparting shear stable antimisting properties to aqueous liquids in those processes where said liquids are employed in the form of controlled sprays, which method comprises adding to said aqueous liquid a functionally effective amount of (A) a surfactant compound represented by the formula: R.sub.1 (Y.sup.⊕)X.sup.⊖ wherein R 1 is a hydrophobic moiety, Y.sup.⊕ is a cationic solubilizing moiety chemically bonded to R 1 , and X.sup.⊕ is a counterion capable of associating with Y.sup.⊕ to form a viscoelastic surfactant and (B) an electrolyte which can associate as the counterion with the surfactant ion to form a viscoelastic surfactant in an additional amount sufficient to further reduce the misting exhibited by said aqueous liquid.
Claim 12
Dependent Claim
10 words
A method of claim 9 wherein said counterion is inorganic.
Claim 13
Dependent Claim
10 words
A method of claim 9 wherein said counterion is organic.
Claim 14
Dependent Claim
10 words
A method of claim 11 wherein said counterion is salicylate.
Claim 15
Dependent Claim
31 words
A method of claim 9 wherein said hydrophobic moiety chemically bonded to an ionic, hydrophilic moiety is selected from a member of the group consisting of cetyltrimethylammonium, oleyltrimethylammonium, erucyltrimethylammonium and cetylpyridinium.
Claim 16
Dependent Claim
13 words
A method of claim 9 wherein said surfactant compound comprises a fluoroaliphatic species.
Claim 17
Dependent Claim
20 words
A method of claim 14 wherein the aqueous liquid comprises an emulsion of an immiscible liquid in the aqueous liquid.
Claim 18
Dependent Claim
32 words
A method of claim 9 wherein the surfactant is employed in an amount from about 0.01 to about 10 weight percent based on the weight of the surfactant and the aqueous liquid.
Claim 19
Dependent Claim
32 words
A method of claim 9 wherein said electrolyte which is employed in an additional amount is employed in an amount from about 0.1 to about 20 moles per mole of viscoelastic surfactant.
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| 3.5 Years (Year 4) | 1991-09-13 | 1992-03-14 | 1992-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-09-13 | 1996-03-14 | 1996-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-09-13 | 2000-03-14 | 2000-09-13 | $7700.00 | Window Closed / Lapsed |