Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Polymers from only ethylenic monomers or processes of...
Reexamination Certificate
2007-09-04
2007-09-04
Wu, David W. (Department: 1713)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Polymers from only ethylenic monomers or processes of...
C526S066000, C526S317100, C526S918000
Reexamination Certificate
active
10691586
ABSTRACT:
There is disclosed a process to uniformly and rapidly carry out the mixing of a monomer liquid and a polymerization initiator and thus for the resulting polymer not to adhere to the inner surface of the piping or the inside of the apparatus in an art of producing a water-absorbent resin by continuously mixing the monomer liquid and the polymerization initiator together and thereby carrying out polymerization. This process comprises the steps of: (a) continuously supplying a monomer liquid20to such as a supply pipe10to continuously stir the monomer liquid20in the supply pipe10with such as a stirring apparatus12; (b) causing a polymerization initiator30to join into a flow of the monomer liquid20being in a stirred state, thereby obtaining a mixed liquid40of the monomer liquid20and the polymerization initiator30; and (c) continuously supplying the mixed liquid40from the supply pipe line10to a polymerization apparatus to cause the mixed liquid40to run a polymerization reaction.
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Cambridge Dictionaries online, Aug. 2, 2005.
Dairoku Yorimichi
Fujino Shin-ichi
Fujita Yasuhiro
Irie Yoshio
Shibata Hirofumi
Bernshteyn M.
Nippon Shokubai Co. , Ltd.
Roylance Abrams Berdo & Goodman L.L.P.
Wu David W.
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