| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a method for producing a (poly)alkylene glycol diether, introducing the oxyalkylene groups of the optional mole number of addition and optional terminal alkyl groups by using a metallosilicate catalyst having 10 to 1,000 ratio of SiO<SB POS="POST">2</SB>/M<SB POS="POST">2</SB>O<SB POS="POST">3</SB>as an ether interchange reaction catalyst. <P>SOLUTION: This method for producing the (poly)alkylene glycol diether includes a process of obtaining the (poly)alkylene glycol diether by the ether interchange reaction of a first (poly)alkylene glycol monoether with a second (poly)alkylene glycol monoether in the presence of the metallosilicate catalyst having 10 to 1,000 ratio of SiO<SB POS="POST">2</SB>/M<SB POS="POST">2</SB>O<SB POS="POST">3</SB>(wherein, M is ≥1 kind selected from the group consisting of Al, Ga, Ge, B, Zn, P, Zr, Ti, Cr, Be, V and As). <P>COPYRIGHT: (C)2012,JPO&INPIT |
