Process for forming a low density detergent granule

Details Process for forming a low density detergent granule Process for forming a low density detergent granule

2005-09-22

2009-02-03

Douyon, Lorna M (Department: 1796)

Cleaning compositions for solid surfaces, auxiliary compositions

Cleaning compositions or processes of preparing

Heterogeneous arrangement

C510S452000

Reexamination Certificate

active

07485614

ABSTRACT:
A process for forming a low density detergent granule has the steps of providing from about 0.1% to about 6% of a hydrotrope, providing from about 22% to about 50% crutcher mix moisture, providing from about 0.2% to about 8% of a water-soluble polymer with a molecular weight of at least about 10,000 g/mol, providing from about 2% to about 20% sodium silicate having a SiO2:Na2O ratio of at least about 2:1, and the balance of adjunct crutcher ingredients, mixing the hydrotrope, crutcher mix moisture, polymer, silicate, and adjunct crutcher ingredients in a crutcher to form a slurry, injecting a gas into the slurry at a pressure of from about 6,000 kPa to about 13,000 kPa, and at a rate of from about 0.01% to about 0.25% and forming the slurry into a detergent granule. The slurry is substantially free of zeolite builder and phosphate builder and the crutcher temperature is maintained at from about 40° C. to about 95° C.

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International Search Report, PCT/US2005/033910, 2 pages.

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