POLYOL RESIN AND PAINT COMPOSITION COMPRISING SAME
申请人:MITSUI PETROCHEMICAL INDUSTRIES, LTD.
公开号:EP0287669A1
公开(公告)日:1988-10-26
The polyol resin comprises a reaction product between (a) disphenol epoxy resin containing a long-chain alkyl-substituted bisphenol as at least a part of the bisphenol component and (b) an active hydrogen-containing compound capable of reacting with the epoxy group,, and is characterized in that it is soluble in organic solvents such as aromatic compounds and insensitive to humidity. This polyol resin is particularly useful as a resin component for urethane paint.
A catalytic system consisting of sodium tungstate and methyltrioctylammonium hydrogensulfate effects oxidation of simple secondary alcohols to ketones using 3—30% H2O2 without any organic solvents. The oxidation can be conducted under entirely halide-free, mildly acidic conditions. A combination of tungstic acid and an appropriate quaternary ammoniumsalt also effects the alcohol dehydrogenation. The