| 摘要 |
PURPOSE:To obtain a compound having terminal double bond and useful as a raw material of heat-resistant polymer, etc., safely and selectively, at a low cost, by dehydrating an alpha-substituted ethanol in the presence of zirconium oxide as a catalyst. CONSTITUTION:A compound having terminal double bond and useful as a copolymer of polyolefin or a raw material of detergent, etc. is prepared by the dehydration reaction of the compound of formula (R is 3-20C hydrocarbon group which may contain double bond, excluding cyclohexyl). The reaction is carried out in the presence of preferably a zirconium oxide prepared by calcining a zirconium compound, preferably zirconium hydroxide, zirconyl hydroxide, zirconium nitrate, zirconyl nitrate, zirconyl carbonate, zirconium alkoxide, etc., at 300- 1,500 deg.C, especially 500-1,100 deg.C for 0.1-50hr, especially 1-10hr. The objective compound can be produced safely, in high selectivity by this process. |
