Frances J Mitchell

US Patent:

48587583, Aug 22, 1989

Filed:

Dec 12, 1988

Appl. No.:

7/284783

Inventors:

Frances E. Mitchell - Pleasanton CA
G. Edward Campbell - Pleasanton CA
Dale S. Steichen - Livermore CA

Assignee:

The Clorox Company - Oakland CA

International Classification:

B65D 8124
B65D 5116
B65D 2300
C01B 1500

US Classification:

206205

Abstract:

A transparent, durable container for housing and delivering a free-flowing granular dry oxidant bleach composition, the container being constructed of a heteropolymeric plastic which maximizes transmission of water vapor for minimum decomposition of the oxidant bleach stored within the container. The selected plastic has a water vapor transmission rate of at least about 2 g/day/100 in. sup. 2 /mil. thickness. The container may include a fragrancing means located remote from the container. The fragrancing means is isolated from the bleach composition by an apertured barrier which allows the fragrance to contact the bleach composition but does not allow the bleach composition to contact the fragrancing means.

US Patent:

50930214, Mar 3, 1992

Filed:

Jul 24, 1989

Appl. No.:

7/384954

Inventors:

Thomas S. Coyne - Livermore CA
J. Bruce England - Pleasanton CA
Blanca L. Haendler - Livermore CA
Frances E. Mitchell - Pleasanton CA
Dale S. Steichen - Byron CA
Carrole L. Johnson - Pleasanton CA

Assignee:

The Clorox Company - Oakland CA

International Classification:

C11D 338
C11D 3395
C01B 1510

US Classification:

252 91

Abstract:

Methods and compositions for increased stability of enzymes in oxidant dry bleach. Enzyme stability is adversely affected by increased temperature, humidity, and the presence of strong oxidants, such as peracids. The instant invention provides enzyme stability in the presence of oxidant bleaches by coating or encapsulating the enzyme, while providing enzyme solubility suitable for use in bleach mixtures upon introduction to an aqueous medium. Particularly, alkali and neutral materials act as protection agents, which neutralize oxidant species before the contact and denature the enzyme. Other standard bleaching composition adjuncts such as builders, fillers, buffers, brighteners, fragrances, and the like may be included in the enzyme-containing oxidant bleach composition in addition to the discrete coated enzyme granules.

US Patent:

51300443, Jul 14, 1992

Filed:

Jan 31, 1989

Appl. No.:

7/304869

Inventors:

Frances E. Mitchell - Pleasanton CA
David L. deLeeuw - San Ramon CA

Assignee:

The Clorox Company - Oakland CA

International Classification:

C11D 3395

US Classification:

252102

Abstract:

Peroxygen bleach compositions which can be used together with oxygen-sensitive wash aids are disclosed. Combination products comprising these bleach compositions together with the oxygen sensitive wash aids are disclosed as well as are methods of laundering employing them. The bleach compositions include a peroxygen source, a surface active or hydrotropic bleach activator or catalyst therefor and a quaternary ammonium salt. As compared to equivalent compositions not containing the quaternary ammonium salt, these bleach compositions are characterized by a delayed onset of active oxygen production when they are added to wash solutions. When these bleach compositions are used in combination with oxygen-sensitive wash aids, the sensitive wash aids have an initial period when they can act before the active oxygen level rises to a level that it interferes with their action. The bleach compositions of this invention which contain the added quaternary ammonium salt are also characterized by achieving higher ultimate levels of active oxygen than do equivalent compositions which do not contain the ammonium salt.

US Patent:

48636266, Sep 5, 1989

Filed:

May 4, 1987

Appl. No.:

7/045316

Inventors:

Thomas Coyne - Livermore CA
J. Bruce England - Pleasanton CA
Blanca Haendler - Livermore CA
Frances E. Mitchell - Pleasanton CA
Dale S. Steichen - Byron CA

Assignee:

The Clorox Company - Oakland CA

International Classification:

C11D 338

US Classification:

252 91

Abstract:

Methods and compositions for increased stability of enzymes in oxidant dry bleach. Enzyme stability is adversely affected by increased temperature, humidity, and the presence of strong oxidants, such as peracids. The instant invention provides enzyme stability in the presence of oxidant bleaches by coating or encapsulating the enzyme, while providing enzyme solubility suitable for use in bleach mixtures upon introduction to an aqueous medium. Particularly, alkali and neutral materials act as protection agents, which neutralize oxidant species before they contact and denature the enzyme. Other standard bleaching composition adjuncts such as builders, fillers, buffers, brighteners, fragrances, and the like may be included in the enzyme-containing oxidant bleach composition in addition to the discrete coated enzyme granules.

US Patent:

52251020, Jul 6, 1993

Filed:

Jan 13, 1992

Appl. No.:

7/822459

Inventors:

Thomas S. Coyne - Livermore CA
J. Bruce England - Pleasanton CA
Blanca L. Haendler - Livermore CA
Frances E. Mitchell - Pleasanton CA
Dale S. Steichen - Byron CA

Assignee:

The Clorox Company - Oakland CA

International Classification:

C01B 1510
C11D 3395

US Classification:

25218626

Abstract:

Methods and compositions for increased stability of enzymes in oxidant dry bleach. Enzyme stability is adversely affected by increased temperature, humidity, and the presence of strong oxidants, such as peracids. The instant invention provides enzyme stability in the presence of oxidant bleaches by coating or encapsulating the enzyme, while providing enzyme solubility suitable for use in bleach mixtures upon introduction to an aqueous medium. Particularly, alkali and neutral materials act as protection agents, which neutralize oxidant species before they contact and denature the enzyme. Other standard bleaching composition adjuncts such as builders, fillers, buffers, brighteners, fragrances, and the like may be included in the enzyme-containing oxidant bleach composition in addition to the discrete coated enzyme granules.

US Patent:

52118746, May 18, 1993

Filed:

Nov 13, 1991

Appl. No.:

7/792332

Inventors:

Blanca L. Haendler - Livermore CA
Frances E. Mitchell - Pleasanton CA
Dale S. Steichen - Livermore CA

Assignee:

The Clorox Company - Oakland CA

International Classification:

C01B 1510

US Classification:

25218626

Abstract:

In one embodiment, the invention provides a stable peracid bleach composition comprising discrete granules which comprise peracid, namely, diperoxydodecanedioic acid. In another preferred embodiment, enzymes are present in the composition separate from the discrete peracid granules. In both the enzyme-containing and non-enzyme containing compositions, peracid and exotherm control agents are combined in a discrete granule in which the amount of water is carefully controlled to result in, respectively, maximum peracid and enzyme stability. Standard bleaching composition adjuncts such as fillers, brighteners, pH control agents and the like may be included in the compositions apart from the discrete peracid granules.

US Patent:

50891677, Feb 18, 1992

Filed:

Aug 22, 1986

Appl. No.:

6/899461

Inventors:

Thomas S. Coyne - Livermore CA
Blanca L. Haendler - Livermore CA
Daniel H. Klapprott - Brentwood CA
Frances E. Mitchell - Pleasanton CA
Dale S. Steichen - Livermore CA
Suzanne M. Thompson - Rochester NY

Assignee:

The Clorox Company - Oakland CA

International Classification:

C11D 339
C11D 760

US Classification:

25218626

Abstract:

In one embodiment, the invention provides a stable peracid bleach composition comprising discrete granules which comprise peracid, namely, diperoxydodecanedioic acid. In another preferred embodiment, enzymes are present in the composition separate from the discrete peracid granules. In both the enzyme-containing and non-enzyme containing compositions, peracid and exotherm control agents are combined in a discrete granule in which the amount of water is carefully controlled to result in, respectively, maximum peracid and enzyme stability. Standard bleaching composition adjuncts such as fillers, brighteners, pH control agents and the like may be included in the compositions apart from the discrete peracid granules.

US Patent:

48657590, Sep 12, 1989

Filed:

Nov 21, 1988

Appl. No.:

7/273700

Inventors:

Thomas S. Coyne - Livermore CA
Daniel H. Klapprott - Brentwood CA
Eric A. Lutkin - Alameda CA
Frances E. Mitchell - Pleasanton CA
Ute H. Riggin - Pleasant Hill CA
Dale S. Steichen - Livermore CA
Suzanne M. Thompson - Berkeley CA

Assignee:

The Clorox Company - Oakland CA

International Classification:

C11D 339
C11D 3395
D06L 302
C01B 1510

US Classification:

25218642

Abstract:

A dry bleach product is based upon diperacid, particularly diperoxydodecanedioic acid. The dry product comprises separate granular, particulate and beaded components wherein the granular component is diperacid stabilized with an exotherm control agent, diluent and a binder that includes unneutralized polymeric acid. The beaded component is fragrance admixed with a water soluble starch; the particulate components include an agglomerated extender or bulking agent, a pH control agent, and protected fluorescent whitening agents, all as separate particulate components. The water content of the granular diperacid is carefully controlled, as is the ratio of exotherm control agent to diperacid.