Phosphate-free concentrated particulate heavy duty laundry...

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

B - Operations, Transporting

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B08B 3/08 (2006.01) C11D 1/66 (2006.01) C11D 1/72 (2006.01) C11D 3/00 (2006.01) C11D 3/10 (2006.01) C11D 3/12 (2006.01) C11D 17/00 (2006.01)

Patent

CA 1094423

PHOSPHATE-FREE CONCENTRATED PARTICULATE HEAVY DUTY LAUNDRY DETERGENT ABSTRACT OF THE DISCLOSURE 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 nonion- ic of the particles and makes them free flowing.

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