Fluorinated monophenols and diphenols and method for their preparation
申请人:General Electric Company
公开号:US04358624A1
公开(公告)日:1982-11-09
Phenol reactants and fluorinated aldehydes or fluorinated ketones are reacted in the presence of organic sulfonic acid catalysts to yield fluorinated monophenols and fluorinated diphenols. Fluorinated monophenols can be isolated and reacted with additional phenol reactant in the presence of organic sulfonic acid catalysts to yield asymmetrical, as well as symmetrical, fluorinated diphenols. A preferred organic sulfonic acid catalyst is methanesulfonic acid. The novel fluorinated monophenols have a hydroxy group and a fluorinated aryl radical or fluorinated alkyl radical substituted upon the benzylic carbon atom. The novel fluorinated diphenols have at least one fluorinated aryl radical or fluorinated alkyl radical substituted upon the methylene carbon atom of the bisphenol.
FLUORINATED MONOPHENOLS AND DIPHENOLS AND METHOD FOR THEIR PREPARATION
申请人:GENERAL ELECTRIC COMPANY
公开号:EP0067851A1
公开(公告)日:1982-12-29
EP0067851A4
申请人:——
公开号:EP0067851A4
公开(公告)日:1983-06-09
Novolak Resin Containing Hexafluoroisopropanol Group, Method for Producing Same, and Composition of Same
申请人:CENTRAL GLASS COMPANY, LIMITED
公开号:US20150337077A1
公开(公告)日:2015-11-26
Disclosed is a novolak resin containing a repeating unit represented by the general formula (1). R
1
is a hydrogen atom or an alkyl group which is C
1-4
straight-chain or C
3-4
branched-chain, and some or all hydrogen atoms in the alkyl group may be replaced with a fluorine atom; R
2
is a hydrogen atom, a phenyl group, an alkyl group which is C
1-10
straight-chain or C
3-10
branched-chain, or an alkyl group having a C
3-10
cyclic structure, and some or all hydrogen atoms in the phenyl group and the alkyl group may be replaced with fluorine atoms; each of a and b is independently an integer of 1-3, and these are defined as 2≦a+b≦4; and d is an integer of 0-2. This novolak resin has high dissolution rate in the alkaline development solution in addition to the heat resisting property which is a property of phenolic resin.