Process for removing metals from vinylphenol polymers

Details Process for removing metals from vinylphenol polymers Process for removing metals from vinylphenol polymers

1992-11-23

1994-02-22

Schofer, Joseph L.

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

Synthetic resins

Treating polymer containing material or treating a solid...

528493, 528494, 528495, C08F 608

Patent

active

052888509

ABSTRACT:
The present invention provides an easily employed and economical process for removing substantially all of the metals from vinylphenol polymers by dissolving the vinylphenol polymer in a solvent and contacting the solution with a strong acidic cation exchange resin. In this way, vinylphenol polymers of high purity are attained, with a metal content which is virtually eliminated or substantially reduced.

REFERENCES:
patent: 4636540 (1987-01-01), Warfel
patent: 4709009 (1987-11-01), Fujiwara et al.
patent: 4985540 (1991-01-01), Bradford et al.
Derwent Publication re Japanese Patent Laid Open No. 63-154704.
Derwent Publication re Japanese Laid Open No. Hei 1 (1989) 103604.
Derwent Publication re Japanese Laid Open No. Sh 60 (1985) 58407.

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