Method of manufacturing powdered cleaning composition

Details Method of manufacturing powdered cleaning composition Method of manufacturing powdered cleaning composition

1978-03-13

1980-03-25

Willis, Jr., P. E.

Compositions

Fluent dielectric

N-containing

252 88, 252DIG2, C11D 732, C11D 1706

Patent

active

041949935

ABSTRACT:
A method of forming a powdered cleaning composition is disclosed. The process comprises the steps of: polymerizing urea and formaldehyde in acidic aqueous solution to form particles of a specified size and porosity, centrifuging the polymer particles to lower their moisture content to less than about 43%, blending polyethylene oxide into the polymer, spraying a fine mist of detergent solution directly onto the polymer mass as it is being blended. The acid may be neutralized by adding buffer to the solution after the urea and formaldehyde are polymerized or by spraying a mist of buffer containing solution directly onto the polymer as it is being blended.

REFERENCES:
patent: 2766283 (1955-06-01), Darden
patent: 4013594 (1977-03-01), Froehlich et al.
patent: 4108800 (1978-08-01), Froehlich et al.

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