Phosphate-free concentrated particulate heavy duty laundry deter

Details Phosphate-free concentrated particulate heavy duty laundry deter Phosphate-free concentrated particulate heavy duty laundry deter

1980-09-02

1982-08-31

Albrecht, Dennis L.

Compositions

Water-softening or purifying or scale-inhibiting agents

23313R, 252140, 25217413, 25217414, 25217421, 25217425, 252179, 264117, C02B 144, C11D 310, C11D 312, C11D 1100

Patent

active

043471528

ABSTRACT:
A free flowing phosphate-free particulate heavy duty laundry detergent is comprised of particles of a mixture of sodium carbonate and sodium bicarbonate having nonionic detergent in the interior and on the surface thereof, to which is adhered a coating of smaller particles of ion exchanging zeolite. The product made is exceptionally free flowing and, although the particles are relatively large, is also of high bulk density (over 0.6 g./cc.). Also within the invention is a method of making such products by contacting the particles of mixed sodium carbonate and sodium bicarbonate with a normally liquid or pasty nonionic detergent in the liquid state so that the detergent is largely absorbed by the particles and coats the surfaces thereof, which are then coated with powdered zeolite which adheres to the surface nonionic of the particles and makes them free flowing.

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: 3944500 (1976-03-01), Gancy
patent: 4007124 (1977-02-01), Collier

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