Abstract: Defoamer compositions of high effectiveness containing at least one siloxane-based antifoam and polysiloxane copolymers obtained by coupling a polysiloxane bearing active-hydrogen-containing hydrophilic polymer moieties by means of a di- or polyisocyanate.
Type:
Grant
Filed:
May 24, 2006
Date of Patent:
January 12, 2010
Assignee:
Wacker Chemie AG
Inventors:
Willibald Burger, Christian Herzig, Josef Wimmer
Abstract: A quaternary surfactant comprising a cyclic diamine group, compositions comprising the quaternized amido cyclic amine surfactant, a gelled aqueous composition comprising the quaternized amido cyclic amine surfactant, use of the gelled aqueous well treatment applications and methods of preparation and intermediates used to prepare the quaternized amido cyclic amine surfactant.
Abstract: A dispersant is prepared from an amine and a hydrocarbyl-substituted acylating agent, wherein the hydrocarbyl substituent is a polymerized olefin having a polydispersity {overscore (M)}w/{overscore (M)}n of greater than 5. Such polyolefin substituents are prepared by polymerization of olefins in the presence of a calcined catalyst comprising a partially or fully neutralized ammonium salt of a heteropolyacid.
Type:
Grant
Filed:
May 18, 2000
Date of Patent:
June 18, 2002
Assignee:
The Lubrizol Corporation
Inventors:
John R. Johnson, James D. Burrington, Christopher J. Kolp, John K. Pudelski, Jeffry G. Dietz, Gregory R. McCullough, Charles K. Baumanis, Carlos L. Cerda de Groote
Abstract: The products of the reaction of epichlorohydrin and compounds having the formula II
R3(EO)n(PO)mOH (II)
wherein R3 is an alkyl alkenyl or arenyl group having from 4 to 22 carbon atoms; a substituted alkyl or alkenyl group having from 4 to 22 carbon atoms wherein; n is a number from 0 to 50 and m is a number from 0 to 50; wherein the mole ratio of epichlorohydrin to (II) is from about 0.60/1 to about 2/1 are used in defoaming compositions for defoaming aqueous systems such as latex paints.
Type:
Grant
Filed:
June 27, 2000
Date of Patent:
May 14, 2002
Assignee:
Cognis Corporation
Inventors:
Michael S. Wiggins, Ronald W. Broadbent
Abstract: The products of the reaction of epichlorohydrin and compounds having the formula II
R3(EO)n(PO)mOH (II)
wherein R3 is an alkyl, alkenyl or arenyl group having from 4 to 22 carbon atoms; a substituted alkyl or alkenyl group having from 4 to 22 carbon atoms wherein; n is a number from 0 to 50 and m is a number from 0 to 50; wherein the mole ratio of epichlorohydrin to (II) is from about 0.60/1 to about 2/1 are used in defoaming compositions for defoaming aqueous systems such as latex paints.
Type:
Grant
Filed:
June 9, 1998
Date of Patent:
February 26, 2002
Assignee:
Cognis Corporation
Inventors:
Michael S. Wiggins, Ronald W. Broadbent