Peter Murphy Robinson

US Patent:

6544383, Apr 8, 2003

Filed:

Aug 7, 2001

Appl. No.:

09/923595

Inventors:

Peter Robinson - High Point NC
Hugh Lavery - Pennington NJ

Assignee:

KAO Specialties Americas - High Point NC

International Classification:

D21C 502

US Classification:

162 5, 210703

Abstract:

The removal of inks from a pulp fiber slurry is accomplished by use of a combination of (1) a polyester obtained through reaction between di and/or tricarboxylic acids and/or anhydrides thereof and a polyalkylene glycol or one or more alkylene oxides, (2) a first deinking agent which is an alkoxylated hydrophobic base, e. g. an alcohol, amine, acid, dimer acid, salts thereof, or the like, and (3) a second deinking agent which is a second alkoxylated hydrophobic base having a cloud point about 2 to 20Â lower than the cloud point of the first deinking agent. Use of the three component combination allows an improved foam profile allowing longer continuous operation or one or more of a reduction in total chemical demand, optical bleach demand, and stickies.

US Patent:

20050133172, Jun 23, 2005

Filed:

Nov 29, 2004

Appl. No.:

10/999196

Inventors:

Peter Robinson - High Point NC, US
John Presley - Kingwood TX, US

International Classification:

D21C005/02

US Classification:

162005000, 510174000

Abstract:

A process for deinking paper being recycled in a carbonate pulping procedure which is performed in the absence of hydroxides and peroxides is improved by the addition of (a) a non-ionic surfactant deinking agent having a cloud point of about 55 to 85, preferably 60-70, and (b) at least two different fatty acid ink collectors: (i) a C16 to C20 fatty acid and (ii) a C22 to C30 fatty acid, the ink collectors being used in a weight ratio of from about 98:2 to 70:30.

US Patent:

51853957, Feb 9, 1993

Filed:

Mar 27, 1991

Appl. No.:

7/675787

Inventors:

Peter M. Robinson - High Point NC

Assignee:

Exxon Chemical Patents Inc. - Linden NJ

International Classification:

C08J 302

US Classification:

524457

Abstract:

Copolymer water-in-oil emulsions of 2-acrylamido-2-methylpropane sulphonic acid (AMPS) monomer and an anionic comonomer such as methacrylic acid are prepared with substantially less coagulum formation by means of a specific dual surfactant system. The resultant emulsions have enhanced long-term storage stability.

US Patent:

60691190, May 30, 2000

Filed:

Feb 17, 1998

Appl. No.:

9/024591

Inventors:

Peter M. Robinson - High Point NC
Robert E. Brooks - High Point NC
Terry E. Singleton - Jamestown NC

Assignee:

High Point Chemical Corp. - High Point NC

International Classification:

C10M10522

US Classification:

508449

Abstract:

A stable, fluid alkaline earth metal tallate dispersion is prepared by (i) forming a pre-emulsion of fatty acids derived from tall oil, water, and a surfactant; (ii) forming an alkaline earth metal salt dispersion from an alkaline earth metal oxide and/or hydroxide, a lower carboxylic acid, and water; and (iii) incorporating the pre-emulsion into the alkaline earth metal salt dispersion under high shear and low pressure.

US Patent:

51090627, Apr 28, 1992

Filed:

Nov 15, 1990

Appl. No.:

7/614728

Inventors:

Peter M. Robinson - High Point NC
K. T. Chang - Columbus GA

Assignee:

Exxon Chemical Patents Inc. - Linden NJ

International Classification:

C08J 300
C08K 529
C08F 232

US Classification:

524801

Abstract:

A Mannich emulsion containing a stabilizing amount of a guanidine salt has been found to exhibit substantially increased long term stability, even at elevated temperature.

US Patent:

52004481, Apr 6, 1993

Filed:

Mar 27, 1992

Appl. No.:

7/860310

Inventors:

Peter M. Robinson - High Point NC
Martin R. Jenkins - Columbus GA

Assignee:

Exxon Chemical Patents Inc. - Linden NJ

International Classification:

C08K 510

US Classification:

524317

Abstract:

Water-in oil emulsions of water-soluble polymers, i. e. polyacrylamides, are stabilized against repeated freeze-thaw cycles by incorporating specific polymeric surfactants while maintaining the total amount of the primary surfactant at less than about 2 percent.

US Patent:

51108534, May 5, 1992

Filed:

Aug 27, 1990

Appl. No.:

7/573484

Inventors:

Peter M. Robinson - High Point NC

Assignee:

Exxon Chemical Patents Inc. - Linden NJ

International Classification:

C08F 232
C08J 300
C08K 506

US Classification:

524375

Abstract:

Water-in-oil emulsions of water-soluble polymers, i. e. polyacrylamides, which are subject to freeze-thaw degradation are stabilized against repeated freeze-thaw cycles by incorporating specific ethoxylated alkylphenol surfactants containing low levels of ethoxylation. Moreover, the resultant emulsions exhibit superior resistance to sheet gel formation under ambient storage conditions.

US Patent:

57633738, Jun 9, 1998

Filed:

Jun 20, 1996

Appl. No.:

8/666902

Inventors:

Peter M. Robinson - High Point NC
Robert E. Brooks - High Point NC
Terry E. Singleton - Jamestown NC

Assignee:

High Point Chemical Corp. - High Point NC

International Classification:

C10M10522

US Classification:

508449

Abstract:

A stable, fluid alkaline earth metal tallate dispersion is prepared by (i) forming a pre-emulsion of fatty acids derived from tall oil, water, and a surfactant; (ii) forming an alkaline earth metal salt dispersion from an alkaline earth metal oxide and/or hydroxide, a lower carboxylic acid, and water; and (iii) incorporating the pre-emulsion into the alkaline earth metal salt dispersion under high shear and low pressure.