PREPARATION AND SYNTHETIC UTILITY OF DIFLUOROKETENE THIOACETAL. A NOVEL SYNTHETIC ROUTE TOα-MONOFLUOROALKANOIC ACIDS
作者:Kiyoshi Tanaka、Takeshi Nakai、Nobuo Ishikawa
DOI:10.1246/cl.1979.175
日期:1979.2.5
Difluoroketene thioacetal (2) prepared from trifluoroacetaldehyde thioacetal (3) with lithium diisopropylamide or alkyllithiums has been shown to be useful as a building block for the preparation of α-monofluoroalkanoic acids (5), which involves the reaction of 2 with various organometallic compounds followed by hydrolysis of the resulting monofluoroketene thioacetal (4).
Image display medium, process for forming image, and multicolor image-forming apparatus
申请人:——
公开号:US20030184644A1
公开(公告)日:2003-10-02
An image display medium that includes a photoconductive layer containing a photochromic compound and an electron accepting compound; and a substrate, in which the photochromic compound contains a fulgide compound, and the electron accepting compound contains a compound selected at least from: a) a phosphonic acid compound having an aliphatic group containing 12 or more carbon atoms; b) an aliphatic carboxylic acid compound having an aliphatic group containing 12 or more carbon atoms; and c) a phenolic compound having an aliphatic group containing 12 or more carbon atoms, a process for forming an image using the medium, and a multicolor image-forming apparatus using the medium and suitable for the process.
SURFACTANT
申请人:Suzuki Kazumitsu
公开号:US20070167343A1
公开(公告)日:2007-07-19
To provide a surfactant which is obtainable by using substantially no alkali metal, has excellent readhesion prevention ability of finely-pulverized particles at the time of cleaning, and is capable of quite efficient and advanced cleaning. In the present invention, a surfactant which comprises a neutralized salt (AB1) and/or neutralized salt (AB2) is used. Neutralized salt (AB1): a neutralized salt (AB1) which comprises an acidic compound (A1) containing at least each one of an acid group (X1) of an acid having the difference of heat of formation in an acid dissociation reaction (Q1) of 3 to 200 kcal/mol and a hydrophobic group (Y) containing 1 to 36 carbon atoms, and a nitrogen-containing basic compound (B) having the difference of heat of formation in a proton addition reaction of 10 to 152 kcal/mol, wherein (X1) is at least one species selected from a sulfonic acid group, and the like. Neutralized salt (AB2): a neutralized salt (AB2) which comprises a polymer (A2) having at least one acid group (X2) within the molecule, and the nitrogen-containing basic compound (B) having the difference of heat of formation in a proton addition reaction of 10 to 152 kcal/mol.