C - Chemistry – Metallurgy – 07 – D
Patent
C - Chemistry, Metallurgy
07
D
402/313, 260/362
C07D 307/60 (2006.01) C08F 22/06 (2006.01)
Patent
CA 1099275
ABSTRACT OF THE DISCLOSURE The invention relates to a process for making polymaleic anhydride by polymerising maleic anhydride in a solvent mixture of xylene, the ortho isomer content of which is up to 99%, and a non-reactive solvent having a boiling point of from 110° to 180°C. using di-tertiary butyl peroxide as catalyst.
281910
Birrell Raymond N.
Royle Norman E.
Ciba-Geigy (uk) Limited
Fetherstonhaugh & Co.
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