Polymerization of maleic anhydride

Details Polymerization of maleic anhydride Polymerization of maleic anhydride

1990-02-07

1991-12-31

Schofer, Joseph L.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

549252, C08F23402

Patent

active

050773640

ABSTRACT:
Polymaleic anhydride having a weight average molecular weight by gel permeation chromatography of between 450 and 800 and a polydispersivity of between 1.0 and 1.15 is produced by polymerizing maleic anhydride, using a peroxide initiator in an amount not greater than 10% by weight of the anhydride, in a dilute solution in o-xylene or a substituted o-xylene.

REFERENCES:
patent: 3320216 (1967-05-01), Butler
patent: 3474114 (1969-10-01), Kuhlkamp
patent: 3810834 (1974-05-01), Jones et al.
patent: 3919258 (1975-11-01), Richardson et al.
patent: 4374733 (1983-02-01), Snyder et al.
patent: 4789716 (1988-12-01), Scholz
patent: 4818795 (1989-04-01), Denzinger

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