Kao Corporation

Hiroshi Noro

Masakazu Furukawa

Shigeaki Fujinami

Hiroyuki Yamashita

Muneo Aoyagi

Kazuyoshi Ozaki

Nobuyuki Ogura

Yasumitsu Sakuma

Atsushi Hiraishi

Nobuyoshi Yamaguchi

Masataka Maki

Koichi Ohori

Kazuo Kubota

Haruyuki Sato

Eiichiro Misaki

Keiichi Onoda

Jun Kozuka

Hisato Yasui

Koichiro Suzuki

Takeshi Ishikawa

Hideyoshi Tanaka

Tomonori Oyashiki

Tsutomu Miyahara

Takahiro Kawaguchi

Yoshihito Hamada

The present invention relates to a bleaching activator granule containing (a) a bleaching activator and (b) a specified alcohol which is liquid at room temperature (25&#xb0; C.).

Bleaching activator granule

The powder composition for paper manufacturing of the invention contains a hydrophobic organic compound (A), an emulsifying and dispersing agent (B), and optionally water-soluble saccharides (C) added based on necessity and has an average particle diameter of 0.1 to 2,000 &#x3bc;m.

Powder composition for paper manufacturing

The invention provides a process for producing a bleaching activator composition, which includes removing a solvent and/or water from a mixture of a bleaching activator and a surfactant dispersed in a non-aqueous solvent, a bleaching activator composition produced by the process and a bleaching activator granule obtained by further granulating the bleaching activator composition.

Process for producing a bleaching activator composition

The present invention provides a granulated bleaching activator having a high solubility, that is, a granulated bleaching activator comprising (a) a bleaching activator and (b) at least one nonionic surfactant selected from the group consisting of a nonionic surfactant (b1) having a melting point less than 20&deg; C. and an alkylene oxide addition type nonionic surfactant (b2) having a melting point less than 20&deg; C., (b1) fulfilling the specific requirements concerning solubility, in a specific ratio.

Granulated bleaching activator

The present invention provides a method of producing powder of e.g. a polycarboxylic acid-based copolymer efficiently at a high yield. The method of the present invention comprises forming a sticky thin-film of the polycarboxylic acid-based copolymer or the like on a support, reducing a stickiness of the said thin-film and powdering the said thin-film.

Method of producing powder

A granular bleach activator composition and a process for producing a granular bleach activator composition having excellent solubility and storability, which comprises using at least one member selected from the group consisting of substances (a), (b), (c) and (d) as a core particle and granulating the core particle and a powdery bleach activator in the presence of a water-soluble organic binder to give granules having a weight-average particle diameter of 100 to 3,000 .mu.m:

Process for producing granular bleach activator composition and granular

A process for producing a high bulk density granular detergent involving the steps of:

Process for producing high bulk density granular detergent

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Wakayama, Japan

Hiroshi Noro