Coating processes – Particles – flakes – or granules coated or encapsulated – Applying superposed diverse coatings or coating a coated base
Patent
1976-12-02
1981-02-03
Albrecht, Dennis L.
Coating processes
Particles, flakes, or granules coated or encapsulated
Applying superposed diverse coatings or coating a coated base
252 91, 252140, 252174, 25217413, 25217421, 25217425, 427215, 427220, 427419, C11D 3075, C11D 312, C11D 1100, C11D 1706
Patent
active
042489113
ABSTRACT:
A free flowing particulate heavy duty laundry detergent containing no more than 8.7% of phosphorus (from phosphate) is comprised of sodium tripolyphosphate particles having nonionic detergent in the interior and on the surface thereof, which adheres a coating of smaller particles of ion-exchanging zeolite to the phosphate. Also within the invention is a method of making such a product by pre-mixing spray dried sodium tripolyphosphate particles and smaller zeolite particles and admixing with them, as by spraying, in liquid form, onto moving particles, a normally liquid or pasty nonionic detergent, such as a higher fatty alcohol polyethylene oxide condensation product, which penetrates the sodium tripolyphosphate particles and adheres zeolite particles to the surfaces thereof.
REFERENCES:
patent: 3290158 (1966-12-01), Treat
patent: 3755180 (1973-08-01), Austin
patent: 3838072 (1974-09-01), Smith
patent: 3868336 (1975-02-01), Mazzola
patent: 3915878 (1975-10-01), Yurko
patent: 4007124 (1977-02-01), Collier
Albrecht Dennis L.
Colgate-Palmolive Company
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