Kenneth W Roach

US Patent:

55520790, Sep 3, 1996

Filed:

Apr 27, 1995

Appl. No.:

8/430177

Inventors:

Kenneth J. Roach - Canton MI
Patricia A. Anderson - Northville MI

Assignee:

Diversey Corporation - Ontario

International Classification:

C11D 706
C11D 3075

US Classification:

510446

Abstract:

Detergent compositions are formed into tablets for dispensing. These tablets can be retained in a flexible plastic bag having a rigid opening and tapered midsection. The rigidity of the tablets enables the bag to retain its shape and prevent hydratable detergents from clogging up the dispenser. A preferred detergent formulation is a high-caustic detergent composition which includes a combination of sodium tripolyphosphate and sodium tripolyphosphate hexahydrate, defoaming surfactant, polycarboxylate and a processing and dissolution aid such as propylene glycol. This detergent composition, when tableted, provides an extremely uniform dissolution rate minimizing any temperature peaks that can occur in dispensing high-caustic detergent.

US Patent:

57599769, Jun 2, 1998

Filed:

Jul 22, 1997

Appl. No.:

8/898013

Inventors:

Kenneth James Roach - Canton MI
Patricia Anderson - Northville MI

Assignee:

Diversey Lever, Inc. - Plymouth MI

International Classification:

C11D 1700
C11D 736
C11D 714
C11D 716

US Classification:

510218

Abstract:

Tableted detergents are formed from a hydrated phosphate sequestrant, caustic, free water and, optionally, fillers by combining the products and tableting the components without permitting the tablets or detergent to exceed 50. degree. C. In a preferred embodiment where fillers are incorporated, all free water is combined with the phosphate sequestrants, both anhydrous and hydrated. After the water has been absorbed by the sequestrants, the filler and caustic can be added and the detergent tableted. The free water is bound sufficiently tightly to the phosphate sequestrant that it does not rapidly react with the anhydrous caustic, maintaining the temperature at less than 50. degree. C. , which in turn prevents the water of hydration in the phosphates from reacting and thereby weakening the formed tablets. The tablets can also be formed by combining the filler with the phosphate sequestrants and water and subsequently adding caustic if the detergent is cooled and its temperature maintained below 50. degree. C.

US Patent:

57133840, Feb 3, 1998

Filed:

Apr 1, 1996

Appl. No.:

8/625353

Inventors:

Kenneth James Roach - Canton MI
Patricia Anne Anderson - Northville MI

Assignee:

Unilever N.V. - Rotterdam

International Classification:

B01D 1102

US Classification:

137 1

Abstract:

Detergent compositions are formed into tablets for dispensing. These tablets can be retained in a flexible plastic bag having a rigid opening and tapered midsection. The rigidity of the tablets enables the bag to retain its shape and prevent hydratable detergents from clogging up the dispenser. A preferred detergent formulation is a high-caustic detergent composition which includes a combination of sodium tripolyphosphate and sodium tripolyphosphate hexahydrate, defoaming surfactant, polycarboxylate and a processing and dissolution aid such as propylene glycol. This detergent composition, when tableted, provides an extremely uniform dissolution rate minimizing any temperature peaks that can occur in dispensing high-caustic detergent.