James E Dolan

US Patent:

46263799, Dec 2, 1986

Filed:

Dec 24, 1984

Appl. No.:

6/686105

Inventors:

Rudolf S. Buriks - St. Louis MO
James G. Dolan - Granite City IL

Assignee:

Petrolite Corporation - St. Louis MO

International Classification:

B01D 1704

US Classification:

252340

Abstract:

Novel demulsifier compositions, their method of preparation and use as demulsifiers are described. The novel demulsifiers comprise the partially condensed reaction product of a blend of at least two oxyalkylated materials with a vinyl monomer. The demulsifiers are useful in the resolution of water-in-oil emulsions.

US Patent:

48778427, Oct 31, 1989

Filed:

Feb 29, 1988

Appl. No.:

7/161863

Inventors:

Rudolf S. Buriks - St. Louis MO
James G. Dolan - Granite City IL

Assignee:

Petrolite Corporation - St. Louis MO

International Classification:

B01D 1704
C09K 700

US Classification:

252344

Abstract:

A composition comprising the reaction product resulting from subjecting to grafting and esterification reaction conditions a mixture comprising a polyoxyalkylene amine and a vinyl monomer. The mixture is substantially free of copolymers derived from a polyoxyalkylene glycol and a diglycidyl ether, and the reaction product is partially cross-linked. Methods of use and preparation of such compositions are also disclosed.

US Patent:

45826285, Apr 15, 1986

Filed:

May 23, 1985

Appl. No.:

6/736876

Inventors:

Rudolf S. Buriks - St. Louis MO
James G. Dolan - Granite City IL

Assignee:

Petrolite Corporation - St. Louis MO

International Classification:

B01D 1704

US Classification:

252340

Abstract:

This invention relates to vinyl-type interpolymers having an overall carbon/oxygen atom ratio of about 2 to about 4, which is preferably derived from 2 types of vinyl monomers: (1) at least one vinyl-type monomer present in the interpolymer at about 50 mole % or greater and having a carbon/oxygen atom ratio of about 3 or less ("hydrophilic" monomer), and (2) at least one vinyl-type monomer present in the interpolymer at about 50 mole % or less and having a carbon/oxygen atom ratio of about 3 or more ("hydrophobic" monomer). Typical examples are vinyl acetate/vinyl fatty ester copolymers and vinyl acetate/dialkyl maleate copolymers. This invention also relates to uses for these compositions, particularly in the demulsification of W/O emulsions.

US Patent:

43129692, Jan 26, 1982

Filed:

Apr 16, 1980

Appl. No.:

6/140916

Inventors:

Harold L. Becker - St. Louis MO
Rudolf S. Buriks - St. Louis MO
James G. Dolan - Granite City IL

Assignee:

Petrolite Corporation - St. Louis MO

International Classification:

C08F 232

US Classification:

526206

Abstract:

This invention relates to an exothermic emulsion polymerization method characterized by the presence of a low boiling fluid as a component of one of the phases of the emulsion system, said low boiling fluid having the following characteristics: (1) It is sufficiently inert so that it does not interfere with the polymerization reaction (2) It is capable of maintaining by reflux the polymerization system at relatively even and homogeneous temperature. This is exemplified by the use of a halogenated hydrocarbon boiling below about 50. degree. C. as the low boiling fluid.

US Patent:

45029776, Mar 5, 1985

Filed:

May 2, 1983

Appl. No.:

6/490742

Inventors:

Rudolf S. Buriks - St. Louis MO
James G. Dolan - Granite City IL

Assignee:

Petrolite Corporation - St. Louis MO

International Classification:

B01D 1704

US Classification:

252340

Abstract:

Novel demulsifier compositions, their method of preparation and use as demulsifiers are described. The novel demulsifiers comprise the partially condensed reaction product of a blend of at least two oxyalkylated materials with a vinyl monomer. The demulsifiers are useful in the resolution of water-in-oil emulsions.