Process for producing polyesters
AssigneeE. I. Du Pont de Nemours and Company
InventorsRobert R. Burch, Edward B. Jones, Steven R. Lustig
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Abstract
Disclosed herein is a process for the production of polyester which involves heating a polymerizable monomer or oligomer in an inert liquid which does not dissolve or swell the monomer, oligomer, or polyester product, while boiling the inert liquid and codistilling the low molecular weight byproduct of the polymerization.
Claims22
A process for production of a polyester, comprising, heating and agitating one or more monomers or oligomers, polymerizable to a polyester upon heating, in an inert liquid medium at a temperature at which said liquid medium boils, in the absence of a nonvolatile surfactant, provided that:
- a volatile product of said polymerizing is removed by codistillation with said inert liquid medium;
- said monomers and said polyester are not swollen nor dissolved by said inert liquid medium.
Dependencies are inferred from the claim text.