Continuous production of elastic polyesters

Details Continuous production of elastic polyesters Continuous production of elastic polyesters

1986-05-28

1987-07-14

Phynes, Lucille M.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

528491, C08G 6376

Patent

active

046803459

ABSTRACT:
An improvement in a process for producing an elastic polyester wherein a crystalline aromatic polyester and one or plurality of lactones are reacted, the improvement comprises by carrying out the reaction in a continuous process by continuously feeding the molten crystalline aromatic polyester and the lactones to a reaction vessel to subject them to addition polymerization, while continuously discharging a reaction mixture from the vessel to obtain the elastic polyester. Optionally, the reaction mixture can be further subjected to polycondensation in a molten state or a solid phase.

REFERENCES:
patent: 2758915 (1956-08-01), Vodonik et al.
patent: 3502623 (1970-03-01), Hurworth et al.
patent: 4096125 (1978-06-01), Smith et al.
patent: 4569973 (1986-02-01), Tyrell et al.
Sumoto, M., et al., Chemical Abstracts 80:16127j (1974).

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