B - Operations – Transporting – 01 – J
Patent
B - Operations, Transporting
01
J
117/46.8
B01J 13/02 (2006.01) B01J 2/16 (2006.01) B01J 2/28 (2006.01) C07C 409/00 (2006.01) C07C 409/24 (2006.01) C07C 409/30 (2006.01) C08K 5/14 (2006.01) C08K 9/10 (2006.01) C11D 3/39 (2006.01)
Patent
CA 1190441
ABSTRACT OF THE DISCLOSURE In particular compositions, it is advantageous to seek to match the physical properties such as particle size and density of the components and in particular it is desirable to modify the physical properties of magnesium salts of various percarboxylic acid caxboxylates for example particular magnesium monoperoxyphthalate, that have been produced in the processes described in European Patent Specification 27693 and the applicant's Canadian Patent Application Serial No.404,224 filed June 1, 1982, for subsequent incorporation in detergent and/or bleaching compositions. In the present invention, granules of the magnesium salts are obtained by spraying onto agitated feed particles of the salt a small amount of a dilute aqueous solution of a synthetic poly hydroxy-substituted compound, particularly polyvinylalcohol and drying the resultant agglomerate. It is especially suitable to carry out the granulation process in a warm air fluidised bed using feed particles of mainly below 200 microns producing eventually a low bulk density product mainly in the range 200-1000 microns. In a modification of the fluidised bed process, the agglomerating agent used can be an aqueous solution of carboxylated polyvinyl alcohol.
410086
Hutton Denis A.
Millar Malcolm H.
Interox Chemicals Limited
Riches Mckenzie & Herbert Llp
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