| 摘要 |
PROBLEM TO BE SOLVED: To obtain nonionic detergent granules having a high bulk density and improved flow characteristics of a powder and caking resistance by granulating a detergent material mixture contg. a nonionic surfactant as the main base material under heating and rolling. SOLUTION: A mixture is prepd. by compunding an org. or inorg. powdery builder which comprises at least one compd. selected from among tripolyphosphates, carbonates, etc., has an average granule size of 500μm or lower, and gives an aq. soln. or dispersion of a concn. of 1g/l having a pH of 8 or higher at 20 deg.C and/or a porous alkaline oil-absorbing carrier with a nonionic surfactant which is a polyoxyethylene alkyl ether formed by the addition reaction of, on average, 5-15mol of ethylene oxide to a 10-20C linear or branched prim. or sec. alcohol and/or an acidic precursor of an anonic surfactant capable of forming a lamella orientation with an aq. soln. of the nonionic surfactant. The mixture is heated to a temp. high enough to enable the neutralization of at least the acidic precursor compounded and then is granulated under rolling, thus giving nonionic degergent granules having a bulk density of 0.6-1.2g/ml.
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