Mitsui Chemicals, Inc.

Pola Chemical Industries, Inc.

Masayuki Yanagi

Hiroshi Itoh

Takeshi Yamamoto

Makoto Kimura

Takayuki Namiki

Toshihiko Takaki

Hiroyoshi Watanabe

Masaru Tanabe

Shoko Oyanagi

Masato Inazu

Nobuyuki Kawakatsu

Toshihiro Morimoto

Yuji Yoshiko

Kazunori Harada

Yoshiyuki Miyata

Masaki Mitani

Kenichi Kishii

Atsushi Utsunomiya

Yasuko Ono

Yoshiharu Momota

Ryoko Yokota

Tetsuo Katoh

Kyoko Yamasaki

Mariko Onoda

Masanori Tsuchihashi

An amphipathic compound represented by any of the following Formulas: ##STR1## (R.sub.1 is a linear or branched, saturated hydrocarbon group having 6 to 48 carbon atoms, or a linear or branched, unsaturated hydrocarbon group containing 1 to 12 unsaturated double bond and having 6 to 48 carbon atoms; Y is NH, N--(CH.sub.2 --CH.dbd.CH.sub.2), or O; Q is --CH.sub.2 --C(R.sub.2).dbd.CH.sub.2 or --R.sub.4 --O--CO--C(R.sub.2).dbd.CH.sub.2 ; and M is alkali metal, an ammonium group, or --(CH.sub.2 CH.sub.2 O).sub.m H), a copolymer of the amphipatic compound with a copolymerizable ethylenically unsaturated compound and, a paper making additive containing a water soluble or dispersible high molecular compound as an active ingredient and processes for producing these high molecular compounds.

Amphipathic compound having succinic acid skeleton

Provided are an amphipathic compound represented by any of the following Formulas: ##STR1## (R.sub.1 is a linear or branched, saturated hydrocarbon group having 6 to 48 carbon atoms, or a linear or branched, unsaturated hydrocarbon group containing 1 to 12 unsaturated double bond and having 6 to 48 carbon atoms; Y is NH, N--(CH.sub.2 --CH.dbd.CH.sub.2), or O; Q is --CH.sub.2 --C(R.sub.2).dbd.CH.sub.2 or --R.sub.4 --O--CO--C(R.sub.2).dbd.CH.sub.2 ; and M is alkali metal, an ammonium group, or --(CH.sub.2 CH.sub.2 O).sub.m H), a copolymer of the amphipatic compound with a copolymerizable ethylenically unsaturated compound and, a paper making additive containing a water soluble or dispersible high molecular compound as an active ingredient and processes for producing these high molecular compounds.

Dopamine re-uptake inhibitor

Diphenylpiperazine derivative and drug for circulatory organ containing

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Yokohama, Japan

Masayuki Yanagi