Organic compounds -- part of the class 532-570 series – Organic compounds – Oxygen containing
Reexamination Certificate
2006-03-14
2006-03-14
Keys, Rosalynd (Department: 1621)
Organic compounds -- part of the class 532-570 series
Organic compounds
Oxygen containing
C568S618000
Reexamination Certificate
active
07012164
ABSTRACT:
A method for precisely producing a polyether having a relatively high molecular weight by means of a double metal cyanide complex catalyst is provided. A method for continuously producing a polyether, which comprises ring opening addition polymerization of an alkylene oxide in the presence of a double metal cyanide complex catalyst, wherein substantially no vapor phase part is present in a reactor.
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Hatano Hiroshi
Ikai Shigeru
Kasahara Nobuyuki
Suzuki Chitoshi
Toyota Yoshinori
Asahi Glass Company Limited
Keys Rosalynd
Oblon & Spivak, McClelland, Maier & Neustadt P.C.
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