Production method of polycarbonate, and polycarbonate pellet
AssigneeMitsubishi Chemical Corporation
InventorsShingo Namiki, Yasuhiro Oda
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AssigneeMitsubishi Chemical Corporation
InventorsShingo Namiki, Yasuhiro Oda
Estimating the term…
The present invention relates to a method for producing a polycarbonate having excellent characteristics such as hue and mechanical properties with a stable quality and a high yield by solving a plurality of problems as those described above in producing a polycarbonate by using a specific dihydroxy compound exhibiting low thermal stability as compared with bisphenols and having a —CH2—O— structure. The polycarbonate obtained by polycondensation in the present invention is a polycarbonate having an appropriate viscosity despite decrease in the reaction temperature, providing for a color tone less susceptible to yellowing, and exhibiting excellent mechanical properties.
A method for producing a polycarbonate, the method comprising continuously feeding:
Dependencies are inferred from the claim text.