C - Chemistry – Metallurgy – 08 – F
Patent
C - Chemistry, Metallurgy
08
F
18/1035, 400/643
C08F 279/00 (2006.01) C08F 291/02 (2006.01)
Patent
CA 1137681
Abstract of the Disclosure: A continuous process for producing rubber- modified methyl methacrylate syrups which comprises continuously supplying a material liquor comprising 1 to 20 parts by weight of a rubbery polymer dissolved in 100 parts by weight of a monomer comprising 60 to 100 % by weight of methyl methacrylate, and a radical- polymerization initiator to the first reaction zone, continuously polymerizing at such a stationary conversion that the rubbery polymer is dispersed in the form of particles form while maintaining the temperature and residence time in the zone so that a steady state is achieved in the zone and the steady-state concentration of the initiator in the zone is 1/2 to 1/1,000 time as much as the concentration of initiator supplied, continu- ously taking out the resulting reaction mixture from the zone, and passing it through the second reaction zone having a volume of 0 to 5 time as much as that of the first reaction zone, to obtain a stable syrup comprising a disperse phase and a continuous phase, the former phase being substantially a solution of the rubbery polymer in the monomer and the latter one being substantially a solution of the resinous polymer in the monomer, and a process for the production of methyl methacrylate cast sheets and molding materials having an excellent impact resistance from the syrups.
350427
Hanamura Yoshimi
Kitagawa Yoshihiko
Moritani Masahiko
Sakuramoto Akira
Suzuki Mikio
Kirby Eades Gale Baker
Sumitomo Chemical Co. Ltd.
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