Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Polymers from only ethylenic monomers or processes of...
Reexamination Certificate
2007-07-03
2007-07-03
Zucker, Paul A. (Department: 1621)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Polymers from only ethylenic monomers or processes of...
C526S318000
Reexamination Certificate
active
11509984
ABSTRACT:
The present invention relates to a process for producing weakly acidic cation exchangers of the polymethacrylic acid type by alkaline saponification of a crosslinked copolymer of alkyl methacrylate and methacrylic acid.
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Halle Olaf
Klipper Reinhold
Podszun Wolfgang
Vanhoorne Pierre
Wagner Rudolf
Lanxess Deutschland GmbH
Seng Jennifer R.
Zucker Paul A.
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