Process for the depolymerization of polyesters using dawsonite a

Details Process for the depolymerization of polyesters using dawsonite a Process for the depolymerization of polyesters using dawsonite a

1984-11-05

1986-06-10

Milestone, Norma S.

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

549266, 549 10, 549 11, C07D32300, C07D31300, C07D32700, C07D32702

Patent

active

045944342

ABSTRACT:
Dawsonite is a highly effective and useful catalyst for the thermal depolymerization of polyesters to produce macrocyclic compounds. High yields and enhanced rates of reaction are obtained using Dawsonite obtained from natural or synthetic sources.

REFERENCES:
patent: 2092031 (1937-09-01), Spanagel
patent: 4157330 (1979-06-01), Rueter et al.
patent: 4165321 (1979-08-01), Harris et al.
patent: 4221771 (1980-09-01), Van der Heem
patent: 4238458 (1980-12-01), Misra
Chemical Abstracts, vol. 94 (1981) 102927r.
Dana's System of Mineralogy, vol. 2 (1951) pp. 276-278.

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