Gail I Howell

US Patent:

56584261, Aug 19, 1997

Filed:

Jul 20, 1995

Appl. No.:

8/504978

Inventors:

Gail M. Howell - Fort Mill SC
Jose M. Rodriguez - Sandersville GA
Anthony B. Cook - Simpsonville SC

Assignee:

Geo Specialty Chemicals, Inc. - Cleveland OH

International Classification:

D21C 502

US Classification:

162 5

Abstract:

Deinking of printed paper is accomplished by repulping and defibering the printed paper in an alkaline aqueous medium containing a deinking composition to form an ink and pulp medium. The deinking composition is an alkoxylated lanolin derivative containing from about 55 to about 80% by weight of ethylene oxide and from about 15 to about 30% by weight of propylene oxide, based on the weight of the alkoxylated lanolin derivative.

US Patent:

55058175, Apr 9, 1996

Filed:

Oct 19, 1993

Appl. No.:

8/139236

Inventors:

Jose M. Rodriguez - Fort Mill SC
Anthony B. Cook - Charlotte NC
Gail M. Howell - Fort Mill SC

Assignee:

Henkel Corporation - Plymouth Meeting PA

International Classification:

D21C 502

US Classification:

162 5

Abstract:

Wastepaper containing printing ink is refined in the presence of the reaction products of castor oil with an alkoxylated fatty acid, alcohol, amine, amide, phosphate ester, polyhydroxy alcohol, or sorbitan, and the detached printing ink particles are subsequently removed from the paper stock suspensions by flotation or washing.

US Patent:

56097220, Mar 11, 1997

Filed:

Dec 1, 1995

Appl. No.:

8/566193

Inventors:

Jos e M. Rodriguez - Fort Mill SC
Anthony B. Cook - Charlotte NC
Gail M. Howell - Fort Mill SC

Assignee:

Henkel Corporation - Plymouth Meeting PA

International Classification:

D21C 502

US Classification:

162 5

Abstract:

Wastepaper containing printing ink is refined in the presence of the reaction products of epoxidized derivatives of C. sub. 10 -C. sub. 22 carboxylic acids with alkoxylated carbohydrate-derived polyols and the detached printing ink particles are subsequently removed from the paper stock suspensions by flotation or washing.

US Patent:

56652046, Sep 9, 1997

Filed:

Jul 20, 1995

Appl. No.:

8/504302

Inventors:

Jose M. Rodriguez - Fort Mill SC
Gail M. Howell - Fort Mill SC
Anthony B. Cook - Simpsonville SC

Assignee:

Geo Specialty Chemicals, Inc. - Cleveland OH

International Classification:

D21C 502

US Classification:

162 5

Abstract:

A process for deinking a printed wastepaper pulp slurry comprising: (a) adding to a printed wastepaper pulp slurry a deinking composition consisting essentially of a nonionic ethoxylated and propoxylated surfactant of the formula (I): R--O--(OCH. sub. 2 CH. sub. 2). sub. n --(OCH. sub. 2 CHCH. sub. 3). sub. m --(OCH. sub. 2 CH. sub. 2). sub. q --O--X (I) wherein n is a number from about 1 to about 50, m is a number from about 1 to about 50, q is a number from about 1 to about 50, and R and X are H or an alkyl, alkenyl, or aryl group containing from about 3 to about 35 carbon atoms; (b) washing the slurry in order to obtain a deinked paper pulp suspension and an ink suspension; and (c) separating the deinked paper pulp suspension from the ink suspension.