Preparation method of amino resin particulate having narrow particle size distribution
AssigneeMitsui Toatsu Chemicals, Inc.
InventorsMuneo Nagaoka, Saburo Hayano
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Abstract
A continuous preparation method of an amino resin particulate having a maximum particle size of 40 .mu.m or less and an average particle size of from 5 to 15 .mu.m is described. The method comprises the steps of reacting amino compounds with aldehydes in the presence of an acid catalyst in an aqueous solution to form a solid product and classifying said solid product in the form of a slurry with a combination of at least two grinders and at least two classifiers.
Claims4
A continuous preparation method of an amino resin particulate having a maximum particle size of 40 .mu.m or less and an average particle size of from 5 to 15 .mu.m, comprising the steps of reacting an amino compound with an aldehyde in the presence of an acid catalyst in an aqueous solution to form a solid product and classifying said solid product in the form of a slurry with a combination of at least two grinders and at least two classifiers.
Dependencies are inferred from the claim text.