Sanyo-kokusaku Pulp Co., Ltd.

Nippon Paper Industries Co., Ltd.

Toshihiro Sugiwaki

Masanobu Kawamura

Nobuhiro Hanada

Shinji Hamada

Takashi Date

Shigenobu Fujioka

Yukio Fujimaru

Hideaki Ishitoku

Tomoyuki Nakamoto

Keiji Ueoka

A lignin composition having a content of aluminum or iron or both at 0.05 to 5 wt. % (based on the solids of the lignin solution) and a content of extracts with chlorotrifluoroethylene dimer at 0.01 to 0.4 wt. % (based on solids in lignin solution). The lignin compositions possess high surface tension and are suitable as dispersing agents for cement.

Lignin composition, method of producing the same and dispersing agent

Novel condensates comprising bisphenols and aromatic aminosulfonic acids, in particular, novel 4-aminobenzenesulfonic acid-2,2-bis (hydroxyphenyl)propaneformaldehyde condensates, and methods for their production are disclosed. The novel condensates are useful as a dispersant for disperse dyes, an additive for carbonaceous fine powder-water slurries and as a water reducing agent for cement.

Production of novel condensates comprising bisphenols and aromatic

A production method of novel condensates comprising bisphenols and aromatic aminosulfonic acids, in particular, novel 4-aminobenzenesulfonic acid-2, 2-bis(4-hydrocyphenyl)propaneformaldehyde type condensate and said condensate itself are disclosed. Uses of condensates as a dispersant for disperse dye, additive for carbonaceous fine powder-water slurry and water-reducing agent for cement are also claimed.

Slump reduction-preventing agent and method for improving applicability

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Kuga, Japan

Toshihiro Sugiwaki