U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Surfactant mixtures, stable gas-in-liquid emulsions, and methods for the production of such emulsions from said mixtures

Patent 4684479 Issued on August 4, 1987. Estimated Expiration Date: Icon_subject August 14, 2005. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Patent References

Hydrated polyglycerol ester composition
Patent #: 3936391
Issued on: 02/03/1976
Inventor: Gabby ,   et al.

Foam type coating remover
Patent #: 4085059
Issued on: 04/18/1978
Inventor: Smith, et al.

Foamed acids stabilized with alkanols
Patent #: 4235734
Issued on: 11/25/1980
Inventor: Scherubel

Carrier liquid solutions for the production of gas microbubbles, preparation thereof, and use thereof as contrast medium for ultrasonic diagnostics
Patent #: 4466442
Issued on: 08/21/1984
Inventor: Hilmann ,   et al.

Method for preparing improved molding materials from coated fine particulate expandable styrene polymers and application of the coated products
Patent #: 4495224
Issued on: 01/22/1985
Inventor: Rigler ,   et al.

Polyhydroxyl non-ionic surfactant, process for preparing the same and cosmetic composition containing the same Patent #: 4515775
Issued on: 05/07/1985
Inventor: Vanlerberghe ,   et al.

Inventor

Application

No. 06/765917 filed on 08/14/1985

US Classes:

516/18, The agent contains organic compound containing oxygen252/61, Froth-flotation or differential adherence510/535, Surfactant composition for cleaning agents (other than raw soap)516/19The compound contains -C(=O)OH group or salt thereof

Examiners

Primary: Terapane, John F.
Assistant: Kilby, Catherine S.

Attorney, Agent or Firm

International Classes

A61K 49/22 (20060101)
C02F 1/24 (20060101)
B01F 17/00 (20060101)

Abstract

Surfactant mixtures for the production of stable gas-in-liquid emulsions are provided comprising:(a) a member selected from the group consisting of glycerol monoesters of saturated carboxylic acids containing from about 10 to about 18 carbon atoms and aliphatic alcohols containing from about 10 to about 18 carbon atoms;(b) a sterol-aromatic acid ester;(c) a member selected from the group consisting of sterols, terpenes, bile acids and alkali metal salts of bile acids;(d) a member selected from the group consisting of sterol esters of aliphatic acids containing from 1 to about 18 carbon atoms; sterol esters of sugar acids; esters of sugar acids and aliphatic alcohols containing from about 10 to about 18 carbon atoms; esters of sugars and aliphatic acids containing from about 10 to about 18 carbon atoms; sugar acids; saponins; and sapogenins; and(e) a member selected from the group consisting of glycerol, glycerol di- or triesters of aliphatic acids containing from about 10 to about 18 carbon atoms and aliphatic alcohols containing from about 10 to about 18 carbon atoms;said components being present in said mixture in a weight ratio a:b:c:d:e of 2-4:0.5-1.5:0.5-1.5:0-1.5:0-1.5.Processes are also provided for forming stable gas-in-liquid emulsions from said surfactant mixtures.

Other References

  • Sebba; Microfoams, J. Colloid and Interface Science, vol. 35, No. 4, Apr. 1971, pp. 643-646
  • Bernd, "Study of the Surface Films of Gas Nuclei . . . Part IV . . . ", Naval Ship Research & Dev. Center (1967)
  • Levine et al, "Microbubbles Have Intracardiac Velocities Similar to Those of . . . ", J. Am Coll. Cardiology 3, 28-33 (1984)
  • Corday et al, "Seminar on Contrast Two-Dimensional Echocardiography . . . ", J. Am. Coll. Cardiology 3, 1-5 (1984)
  • Feinstein et al, "Two-Dimensional Content Echocardiography. I. In Vitro . . . ", J. Am. Coll. Cardiology 3, 14-20 (1984)
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