Kathleen B Hunter

US Patent:

52346170, Aug 10, 1993

Filed:

Apr 20, 1992

Appl. No.:

7/870842

Inventors:

Kathleen B. Hunter - Cincinnati OH
Edward E. Getty - Cincinnati OH
Josephine L. Kong-Chan - Cincinnati OH

International Classification:

C11D 337
C11D 339
C11D 342
C11D 1708

US Classification:

252102

Abstract:

An aqueous liquid bleach composition containing solid, water-insoluble organic peroxyacid, bleach-stable, stilbene fluorescent whitening agent, and polyvinyl pyrrolidone or polyvinyl alcohol is provided. A preferred aqueous liquid bleach composition comprising, by weight of the composition, from 5 to 15 weight % of mononylamido peroxyadipic acid; from about 0. 4 to about 10 weight % of polyvinyl pyrrolidone with a molecular weight between about 5,000 and about 100,000; and from about 0. 05 to about 2 weight % of a fluorescent whitening agent of the formula: ##STR1## Preferably, the ratio of polyvinyl pyrrolidone to fluorescent whitening agent is between about 20:1 and about 1:1 and the composition has a pH at 20. degree. C. from about 1 to about 6. 5.

US Patent:

54198470, May 30, 1995

Filed:

May 13, 1993

Appl. No.:

8/061796

Inventors:

Michael S. Showell - Cincinnati OH
Josephine L. Kong-Chan - Cincinnati OH
Philip G. Sliva - Cincinnati OH
Kermit W. Kinne - Cincinnati OH
Kathleen B. Hunter - Villa Hills KY

Assignee:

The Procter & Gamble Company - Cincinnati OH

International Classification:

C11D 754
C01B 15037

US Classification:

252100

Abstract:

The present invention provides an aqueous liquid bleach composition which remains stable over an extended period of time. The liquid bleach is easily pourable since it has a relatively low viscosity. The liquid bleach generally comprises (a) from about 1% to about 25% by weight of a water-soluble bleach activator; (b) from about 0. 1% to about 10% by weight of hydrogen peroxide; (c) from about 1% to about 20% by weight of a phase stabilizer; (d) from about 0. 001% to about 2% by weight of a chelating agent; and (e) the balance water. The liquid bleach composition is isotropic, translucent and has a viscosity of less than about 500 cps.

US Patent:

58720928, Feb 16, 1999

Filed:

Jun 18, 1997

Appl. No.:

8/878458

Inventors:

Josephine L. Kong-Chan - Cincinnati OH
Kathleen B. Hunter - Villa Hills KY

Assignee:

The Procter & Gamble Company - Cincinnati OH

International Classification:

C11D 104
C11D 172
C11D 339

US Classification:

510413

Abstract:

Disclosed are nonaqueous, bleach-containing liquid laundry detergent compositions which are in the form of a suspension of particulate material, including peroxygen bleaching agent and an alkyl sulfate anionic surfactant, dispersed in a liquid phase containing an alcohol ethoxylate nonionic surfactant and a nonaqueous, low-polarity organic solvent. Such compositions provide especially desirable cleaning and bleaching of fabrics laundered therewith and also exhibit especially desirable chemical and phase stability.

US Patent:

50552180, Oct 8, 1991

Filed:

Apr 13, 1990

Appl. No.:

7/508994

Inventors:

Edward E. Getty - Cincinnati OH
Kathleen B. Hunter - Villa Hills KY
Eugene S. Sadlowski - Cincinnati OH

Assignee:

The Procter & Gamble Company - Cincinnati OH

International Classification:

C11D 3395
C11D 754
C11D 942
A62D 900

US Classification:

252 94

Abstract:

This is a bleach granule comprising the nonylamide of peroxyadipic acid with a average particle size of about 0. 1 to 260 microns, bleach-stable surfactant, and a hydratable, NAPAA-compatible material, e. g. sodium sulfate. The bleach granules are stable and are effective bleaching agents.