Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Polymers from only ethylenic monomers or processes of...
Reexamination Certificate
2011-04-26
2011-04-26
Teskin, Fred M (Department: 1762)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Polymers from only ethylenic monomers or processes of...
C526S912000, C210S679000, C585S820000
Reexamination Certificate
active
07932329
ABSTRACT:
Stage I Group 1 metal/porous metal oxide compositions or Stage II Group 1 metal/porous metal oxide compositions are shown to be useful to remove impurities and act as drying agents for various types of solvents and for olefinic monomers used in anionic polymerizations. One important advantage of these compositions is their ability to dry simultaneously solvent and monomers, without inducing a significant polymerization of the latter. Another important characteristic is the capacity of the compositions to be totally inactive toward conventional anionic polymerization which allows them to be left in situ during the polymerization itself.
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International Search Report mailed May 15, 2009.
Carlotti Stephane
Deffieux Alain
Ito Mana
Lefenfeld Michael
J.A. Lindeman & Co., PLLC
Laboratoire de Chimie des Polymeres Organiques
Signa Chemistry, Inc.
Teskin Fred M
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