Nissan Motor Company Limited

Enthone Incorporated

Hideaki Yaegashi

Hiroshi Yokoyama

Masahiko Yamanaka

Kentarou Watanabe

Shoko Kano

Osamu Tanaka

Yasuhiro Kimura

Hideo Sawada

Tsuneo Sakauchi

Hiroyuki Kishi

Bernhard Wessling

Masahiro Obika

Shinji Matsuda

Jörg Posdorfer

Stephan Nissen

Monika Schwarzenberg

A nanoparticle includes a chain oligomer section having a hydrophilic group and fluoroalkyl groups respectively at its opposite terminals, a three-dimensional silica network section, and an organic chain having fluorine or silicon, and is represented by the following formula (2): where R' is independent H or independent alkyl group; X is the hydrophilic group and is selected from the group consisting of an OH group, an NCO group, an NHgroup, an NHR group (where R is alkyl group) and a COY group (where Y is a hydrophilic group); Ris the fluoroalkyl group having a carbon number of 2 to 10 and a molecular weight of 119 to 1000; 3D-SN is the three-dimensional silica network section; B is selected from the group consisting of an O, O&#x2550;C&#x2014;O, NH&#x2014;C&#x2550;O and NR&#x2014;C&#x2550;O (where R is alkyl group); E is O, O&#x2550;C&#x2014;O, NH&#x2014;C&#x2550;O or NR&#x2014;C&#x2550;O (where R is alkyl group); L is (CHO)&#x2014;[Si(CH)O]&#x2014;(CHO)-&#x3b1;, (CF)j-&#x3b1; or (CFO)-&#x3b1; where &#x3b1; is COY group (where Y is hydrophilic group), NCO group, NHgroup, NHR group (R is alkyl group), R group (or alkyl group) or H; n is 1&#x2266;n&#x2266;10; m is 1&#x2266;m&#x2266;n; k is 1&#x2266;k&#x2266;500; l is 0&#x2266;1&#x2266;10; j is 0&#x2266;j&#x2266;20; and h is 1&#x2266;h&#x2266;20.

Nanoparticle and nanoparticle composite

A nanoparticle composite includes a host molecule including a chain oligomer section having a hydrophilic group and fluoroalkyl groups respectively at opposite terminals thereof and a three-dimensional silica network section, and having a structure represented by the following formula (1): where X is the hydrophilic group and is independent OH group, independent NCO group, independent NHgroup, independent NHR group (where R is alkyl group) or independent OCY group (where Y is a hydrophilic group); Ris the fluoroalkyl group having a carbon number of 2 to 10 and a molecular weight of 119 to 1000; 3D-SN is the three-dimensional silica network section; B is independent O, independent O&#x2550;C&#x2014;O, independent NH&#x2014;C&#x2550;O or independent NR&#x2014;C&#x2550;O (where R is alkyl group); n is 1&#x2266;n&#x2266;10; and m is 1&#x2266;m&#x2266;n; and a guest molecule included in the host molecule.

Nanoparticle composite

A nanoparticle includes a chain oligomer section having a hydrophilic group and fluoroalkyl groups respectively at its opposite terminals, a three-dimensional silica network section, and an organic chain having fluorine or silicon, and is represented by the following formula (1): where R' is independent H or independent alkyl group; X is the hydrophilic group and is independent OH group, independent NCO group, independent NHgroup or the like; Ris the fluoroalkyl group having a carbon number of 2 to 10 and a molecular weight of 119 to 1000; 3D-SN is the three-dimensional silica network section; B is independent O, independent O&#x2550;C&#x2014;O or the like; E is O, O&#x2550;C&#x2014;O, NH&#x2014;C&#x2550;O or the like; G is [(CHO)&#x2014;[Si(CH)O]&#x2014;(CHO)] or the like.

A pretreatment apparatus for performing pretreatment before a painting process includes a treatment tank to be filled with a treatment liquid for degreasing and chemical conversion. A circuit section forms a circulation path for circulating the treatment liquid from the treatment tank to the treatment tank. A purifying section removes dust, chemical sludge and oil from the treatment liquid circulated to the treatment tank through the circulation path.

Apparatus for pretreatment prior to painting

Growing community of inventors

Kanagawa, Japan

Hideaki Yaegashi