ALICYCLIC POLYAMINES AND PROCESS FOR THE PREPARATION THEREOF
申请人:DAICEL CHEMICAL INDUSTRIES, LTD.
公开号:EP0895984A1
公开(公告)日:1999-02-10
An alicyclic polyamine of the formula (1)
wherein Y1 represents a saturated aliphatic hydrocarbon group and R1 through R4 are the same or different and each represents hydrogen atom, an alkyl group, a cycloalkyl group, an aryl group, or an aralkyl group. The alicyclic polyamine can be obtained by subjecting a 3-formylcycloalkanone or 3-formylcycloalkenone to reductive amination reaction.
3-HYDROXYMETHYLCYCLOALKANOLS AND PROCESS FOR PRODUCING THEM
申请人:DAICEL CHEMICAL INDUSTRIES, LTD.
公开号:EP0895980A1
公开(公告)日:1999-02-10
A 3-hydroxymethylcycloalkanol of the formula (1)
wherein Y1 represents a saturated aliphatic hydrocarbon group. The 3-hydroxyethylcycloalkanol can be obtained by subjecting a 3-formylcycloalkanone or 3-formylcycloalkenone to reduction.
Amended Abstract
The present invention relates to a 3-hydroxymethylcycloalkanol of the following formula (1), and a process for production of a 3-hydroxymethylcycloalkanol of the formula (1) by reduction of 3-formylcycloalkanone or 3-formylcycloalkenone.
In accordance with the present invention, 3-hydroxymethylcycioalkanol, which is useful as the starting material for the production of polymers, can be produced with high conversion and high selectivity.
A cycloaliphatic polyisocyanate compound, a process for the preparation thereof, a polyurethane therefrom, and an adhesive composition
申请人:Daicel Chemical Industries, Ltd.
公开号:EP0976723A2
公开(公告)日:2000-02-02
The invention relates to a cycloaliphatic polyisocyanate represented by general formula (1) described below,
in which Y1 is a divalent saturated aliphatic hydrocarbon residual group, for example, 3-isocyanatemethyl-5,5-dimethylcyclohexylisocyanate.
The invention also relates to a process for manufacturing the above polyisocyanate by a reaction for conversion into an isocyanate of 3-aminomethylcycloalkyl amines which is obtained by a reductive amination of 3-formylcycloalkanones or 3-formylcycloalkenones obtained by oxidation of 3-methyl group in 3-methylcycloalkanones or 3-methylcycloalkenones. Further, 3-isocyanatemethyl-5,5-dimethylcyclohexylisocyanate having the chlorine content of not more than 10 ppm is optionally obtained using dimethylcarbonate by a phosgene method or a nonphosgene method.