Process for producing polycondensates

Details Process for producing polycondensates Process for producing polycondensates

1978-09-05

1982-02-02

Nielsen, Earl A.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 37N, 528128, 528173, 528176, 528196, 528212, 528272, 528309, 528335, 528342, 528350, 528353, 528388, C08G 8500, C08G 6306, C08G 6906

Patent

active

043138705

ABSTRACT:
In a method producing a polycondensate by bulk polycondensation of a monomer (or a reactant mixture) which is a fluid at the polycondensation temperature, an improvement which comprises carrying out the polycondensation until substantially the whole polycondensate becomes a solid polydispersion while continually applying a shearing force sufficient for maintaining the polycondensation system in polydispersed state at a temperature of below the sintering of the produced polycondensate but sufficiently high for allowing the polycondensation to proceed substantially.

REFERENCES:
patent: 3379696 (1968-04-01), Wiloth
patent: 3562206 (1971-02-01), Silverman et al.
patent: 3637595 (1972-01-01), Cottis et al.
patent: 3821171 (1974-06-01), Beaton
patent: 3969325 (1976-07-01), Conciatori et al.
patent: 3987015 (1976-10-01), Driscoll et al.
patent: 4067852 (1978-01-01), Calundann
patent: 4080317 (1978-03-01), Morawetz et al.
patent: 4146702 (1979-03-01), Morris et al.

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