Process for producing radical polymer and microapparatus for...

Details Process for producing radical polymer and microapparatus for... Process for producing radical polymer and microapparatus for...

2004-07-16

2008-12-16

Teskin, Fred M (Department: 1796)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Polymerizing in tubular or loop reactor

C526S088000, C526S920000, C422S138000, C422S202000

Reexamination Certificate

active

07465771

ABSTRACT:
The present invention provides a method for producing a radical polymer having controlled molecular weight distribution or a narrow molecular weight distribution profile, comprising feeding a radical polymerization initiator and a radical-polymerizable monomer into a reaction tube having an inner diameter of 2 mm or less and performing polymerization in the reaction tube in a homogeneous liquid state under flow conditions. Also provided is a microreactor having a jacket for allowing a temperature-regulating fluid to pass therethrough and a plurality of round tubes which are arranged in parallel in the jacket, each having an inner diameter of 2 mm or less, wherein reaction temperature in the round tubes can be regulated through flowing of the temperature-regulating fluid in the jacket.

REFERENCES:
patent: 6399031 (2002-06-01), Herrmann et al.
patent: 6555629 (2003-04-01), Pysall et al.
patent: 2002/0055655 (2002-05-01), Leipprand et al.
patent: 2002/0170976 (2002-11-01), Bergh et al.
patent: 2003/0082081 (2003-05-01), Fouillet et al.
patent: 7-25908 (1995-01-01), None
patent: 2002-512272 (2002-04-01), None
patent: 2002-544309 (2002-12-01), None
patent: 2003-200041 (2003-07-01), None
patent: 2004-197083 (2004-07-01), None
patent: WO 03/037501 (2003-05-01), None

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