Continuous manufacturing of polyol
AssigneeSaudi Aramco Technologies Company
InventorsMohammad S. Alroaithi, Hussain M. Yami, Ola Ali, Wei Xu
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Abstract
A method of continuously producing a polyol includes: (i) feeding a solid catalyst into a continuous stirred tank reactor (CSTR); (ii) contacting a reaction mixture comprising one or more epoxides and carbon dioxide with the solid catalyst and a chain transfer agent comprising a plurality of sites capable of initiating copolymerization of epoxides and carbon dioxide in the CSTR; (iii) allowing polymerization reaction to proceed until a desired molecular weight polyol has formed; and (iv) terminating the polymerization reaction.
Claims20
A method of continuously producing a polycarbonate polyol, the method comprising:
- (i) feeding a solid catalyst into a continuous stirred tank reactor (CSTR);
- (ii) contacting a reaction mixture comprising one or more epoxides and carbon dioxide with the solid catalyst and a chain transfer agent comprising a plurality of sites capable of initiating copolymerization of epoxides and carbon dioxide in the CSTR;
- (iii) allowing polymerization reaction to proceed until a desired molecular weight polyol has formed;
- and
- (iv) terminating the polymerization reaction.
A system for producing a polyol, the system comprising:
- a CSTR in which polymerization reaction of the polyol proceeds;
- a solid catalyst input subsystem fluidly connected to the CSTR, wherein the solid catalyst are fed into the CSTR through the solid catalyst input subsystem;
- and
- a reagent input subsystem fluidly connected to the CSTR,
- wherein a reaction mixture comprising one or more epoxides, and/or carbon dioxide, and a chain transfer agent comprising a plurality of sites capable of initiating copolymerization of epoxides and carbon dioxide are fed into the CSTR through the reagent input subsystem.
Dependencies are inferred from the claim text.