Kao Corporation

Toshiharu Noguchi

Kazunori Tsukuda

Junya Hanai

Hiroyuki Yamashita

Masaaki Yamamura

Mitsuru Uno

Shu Yamaguchi

Noboru Moriyama

Masaki Tsumadori

Hiromitsu Hayashi

Hideichi Nitta

Kyoko Okada

Yoichi Sugiyama

Jun Kozuka

Kimihiro Mizusawa

Sachiko Yoshioka

The present invention relates to [1] alkali agent-containing particles which are free from deterioration of dissolvability in water and excellent in anti-caking property and which include (a) particles containing an alkali agent and having an average particle size of from 150 to 1000 &#x3bc;m, and a layer of (b) clay mineral particles exhibiting a water impregnation capacity of 200% by mass or more and having an average particle size of from 1 to 200 &#x3bc;m, the layer being formed on a surface of the respective particles (a); and [2] a method for suppressing caking of the alkali agent-containing particles including the step of forming a layer of the clay mineral particles (b) on a surface of the respective particles (a).

Particles containing alkali

The present invention relates to a liquid detergent composition containing (a) a specific compound having one alkyl group selected from a 2-ethylhexyl group, an isononyl group and an isodecyl group, (b) a surfactant selected from anionic surfactants and amphoteric surfactants, (c) a hydrophobic organic solvent that is liquid at 20&#xb0; C., and (d) water in specific ratios.

Liquid detergent composition comprising a hydrophobic organic solvent

The present invention relates to a liquid detergent composition containing (a) a specific compound having one alkyl group selected from a 2-ethylhexyl group, an isononyl group and an isodecyl group, (b) anonionic surfactant having an alkyl or alkenyl group having 11 to 16 carbon atoms, (c) a hydrophobic organic solvent which is liquid at 20&#xb0; C. and (d) water, wherein (c)/(d) and (c)+(d) are respectively in a specific range.

Liquid detergent composition

A high-density detergent composition comprises 10 to 60% by weight of a surfactant composition having a weight ratio of an anionic surfactant to a nonionic surfactant of 4:10 or more and 10:0 or less, wherein the high-density detergent composition has a bulk density of from 600 to 1200 g/L, and has a total summation of a product of a mass base frequency Wi and a dissolving rate Vi of each group of classified granules obtained by classifying detergent granules by using a classifier, which satisfies the following formula: &#x3a3;(Wi&#xb7;Vi)&#x2267;95(%), and wherein a mass base frequency of the classified granules having a size of less than 125 &#x3bc;m is 0.1 or less, wherein the classifier comprises sieves each having a sieve-opening 2000 &#x3bc;m, 1410 &#x3bc;m, 1000 &#x3bc;m, 710 &#x3bc;m, 500 &#x3bc;m, 355 &#x3bc;m, 250 &#x3bc;m, 180 &#x3bc;m, and 125 &#x3bc;m, and a receiver.

High-density detergent composition

A high-density powdered detergent composition which has a bulk density of 0.6 to 1.2 g/ml and which comprises 0.5 to 30% by weight of (a) a glycine-N,N-diacetic acid derivative, 20 to 50% by weight of (b) an anionic surfactant, 0.5 to 5% by weight of (c) an ether-type nonionic surfactant having an HLB value of 10.5 to 15.0 and 1 to 30% by weight of (d) an aluminosilcate, each percentage being based on the total weight of the composition, and the component (c) being contained in an amount of 0.5 to 10.0 parts by weight per 100 parts by weight of the component (b). This composition contains both a glycine-N,N-diacetic acid derivative which is a builder excellent in biodegradability and sequestering power and an inorganic builder such as zeolite or crystalline silicate, and exhibits high detergency.

High-density powdered detergent composition

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Wakayama, Japan

Toshiharu Noguchi