Process for preparation of methacrylimide group-containing polym

Details Process for preparation of methacrylimide group-containing polym Process for preparation of methacrylimide group-containing polym

1988-07-18

1990-07-10

Henderson, Christopher

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

Synthetic resins

Treating polymer containing material or treating a solid...

525379, 528492, C08F 600, C08F 2052

Patent

active

049407783

ABSTRACT:
A methacrylimide group-containing polymer having improved moldability as well as good heat resistance and transparency is prepared by heat treating a methacrylimide group-containing polymer having imide ring structural units of the formula: ##STR1## wherein R represents a hydrogen, an alkyl, cycloalkyl, aryl, alkaryl, aralkyl or allyl group 1 to 20 carbon atoms, at a temperature of 190 to 350 C. in the presence of a tertiary amine of the formula: ##STR2## wherein R.sub.1, R.sub.2 and R.sub.3 independently represent an alkyl, aryl, aralkyl or alkaryl group having 1 to 20 carbon atoms, and two of R.sub.1, R.sub.2 and R.sub.3 may be linked to form a ring together with the nitrogen atom.

REFERENCES:
patent: 4246374 (1981-01-01), Kopchik
K. Ziegenberg et al.: Copolymere aus Methacrylsaure und Dimethacryloylimid und die Abhangigkeit ihrer NMR -Spektren vom Neutralisationsgrad, Makromol. Chem. 184, 1705-1726 (1983), English translation attached.

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