Michael J Wint

US Patent:

57144516, Feb 3, 1998

Filed:

Mar 15, 1996

Appl. No.:

8/616442

Inventors:

Steven J. Brouwer - Hudsonville MI
Michael J. Wint - Grand Rapids MI

Assignee:

Amway Corporation - Ada MI

International Classification:

C11D 342
C11D 1100

US Classification:

510324

Abstract:

A powdered laundry detergent is provided with (a) a powder laundry detergent base that includes an inorganic carrier and a surfactant and (b) post-added acidulant and discrete whitening agent particles to provide a detergent having improved cool water solubility with bulk color deterioration caused by whitening agents being minimized. The detergent includes from about 5% to about 80% of an inorganic carrier, from about 1% to about 90% of a detergent surfactant, up to about 15% of an acidulant and up to about 30% of the discrete whitening agent particles. The acidulant is selected from the group of acids that in an acid form are soluble in water in an amount not greater than about 0. 7% by weight at 25. degree. C. and in a salt form are soluble in water at least in an amount of about 15% by weight at 25. degree. C.

US Patent:

59900687, Nov 23, 1999

Filed:

Mar 10, 1998

Appl. No.:

9/041064

Inventors:

Steven J. Brouwer - Rockford MI
Michael J. Wint - Grand Rapids MI

Assignee:

Amway Corporation - MI

International Classification:

C11D 310
C11D 1100
C11D 1706

US Classification:

510276

Abstract:

A powder laundry detergent has improved solubility in the laundering solution and improved dispensability by incorporating an acidulant that, in its acid form, is sparingly soluble in water and, in its salt form, is soluble in water. In particular, the acidulant is selected from the group of acids that in an acid form are soluble in water in an amount not greater than about 8%, preferably no greater than about 0. 7% by weight at 25. degree. C. and in a salt form are soluble in water at least in an amount of about 15% by weight at 25. degree. C. A method of improving the solubility of a powder detergent includes admixing an acidulant in the powder detergent where the acidulant is selected from the group of acids that in an acid form are soluble in water in an amount not greater than about 8%, preferably not greater than about 0. 7% by weight at 25. degree. C. and in a salt form are soluble in water at least in an amount of about 15% by weight at 25. degree. C.

US Patent:

60081740, Dec 28, 1999

Filed:

Oct 23, 1997

Appl. No.:

8/959110

Inventors:

Steven J. Brouwer - Hudsonville MI
Michael J. Wint - Grand Rapids MI

Assignee:

Amway Corporation - Ada MI

International Classification:

C11D 310
C11D 1100
C11D 1706

US Classification:

510276

Abstract:

A powder laundry detergent has improved solubility in the laundering solution by incorporating an acidulant that, in its acid form, is sparingly soluble in water and, in its salt form, is soluble in water. In particular, the acidulant is selected from the group of acids that in an acid form are soluble in water in an amount not greater than about 0. 7% by weight at 25. degree. C. and in a salt form are soluble in water at least in an amount of about 15% by weight at 25. degree. C. A method of improving the solubility of a powder detergent includes admixing an acidulant in the powder detergent where the acidulant is selected from the group of acids that in an acid form are soluble in water in an amount not greater than about 0. 7% by weight at 25. degree. C. and in a salt form are soluble in water at least in an amount of about 15% by weight at 25. degree. C.

US Patent:

59983515, Dec 7, 1999

Filed:

Mar 10, 1998

Appl. No.:

9/041063

Inventors:

Steven J. Brouwer - Hudsonville MI
Michael J. Wint - Grand Rapids MI

Assignee:

Amway Corporation - Ada MI

International Classification:

C11D 342
C11D 1100
C11D 1706

US Classification:

510324

Abstract:

A powdered laundry detergent is provided with discrete whitening agent particles that do not adversely affect the bulk appearance of the detergent during storage. The detergent includes from about 5% to about 80% of an inorganic carrier, from about 1% to about 90% of a detergent surfactant, and from 0. 1% up to about 30% of the discrete whitening agent particles. The whitening agent particles include a whitening agent and a surfactant. The surfactant for the whitening agent particle includes those anionics, nonionics, zwitterionics, ampholytics, cationics, and mixtures thereof that are solids in a temperature range of from about 32. degree. F. (0. degree. C. ) to about 180. degree. F. (82. degree. C. ). The whitening agent particles, in a more desirably form, include a whitener and water. The particles are formed by extruding a homogenous mass into discrete particles.

US Patent:

60807113, Jun 27, 2000

Filed:

Mar 10, 1998

Appl. No.:

9/041060

Inventors:

Steven J. Brouwer - Hudsonville MI
Michael J. Wint - Grand Rapids MI

Assignee:

Amway Corporation - Ada MI

International Classification:

C11D 342
C11D 1100
C11D 1706

US Classification:

510324

Abstract:

A powdered laundry detergent is provided with (a) a powder laundry detergent base that includes an inorganic carrier and a surfactant and (b) post-added acidulant and discrete whitening agent particles to provide a detergent having improved cool water solubility with bulk color deterioration caused by whitening agents being minimized. The detergent includes from about 5% to about 80% of an inorganic carrier, from about 1% to about 90% of a detergent surfactant, from about 0. 1% up to about 15% of an acidulant and from about 0. 1% up to about 30% of the discrete whitening agent particles. The acidulant is selected from the group of acids that in an acid form are soluble in water in an amount not greater than about 8%, preferably not greater than about 0. 7% by weight at 25. degree. C. and in a salt form are soluble in water at least in an amount of about 15% by weight at 25. degree. C.

US Patent:

57144567, Feb 3, 1998

Filed:

Mar 15, 1996

Appl. No.:

8/616208

Inventors:

Michael J. Wint - Grand Rapids MI

Assignee:

Amway Corporation - Ada MI

International Classification:

C11D 1100
C11D 342

US Classification:

510451

Abstract:

A process for preparing discrete whitening agent particles that includes the steps of providing a whitening agent, admixing a surfactant that is a solid in a temperature range of from about 32. degree. F. (0. degree. C. ) to about 180. degree. F. (82. degree. C. ) with the whitening agent to form a substantially homogenous mass, and forming the mixture into discrete particles. The particles are preferably formed by extruding the homogeneous mass through an extruder at an elevated temperature. The particles may be added to a powder detergent.