US 4,363,924 AGranted

Depolymerization of polytetramethylene glycol ethers

AssigneeBASF SE

InventorsHerbert Mueller, Otto H. Huchler

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Abstract

A process for depolymerizing polytetramethylene glycol ethers, wherein the latter are heated at from 90.degree. to 180.degree. C. in the presence of a bleaching earth.

Claims6

Dependent claims

A process for depolymerizing polytetramethylene glycol ethers which comprises heating a polytetramethylene glycol ether in the presence of a bleaching earth at from 90.degree. to 180.degree. C.

Dependencies are inferred from the claim text.

Facts

Application: 06/313,657Filed 22 Oct 1981
Priority: DE 304296014 Nov 1980
Granted: 14 Dec 1982
Term ends: Not estimatedThe source records don’t support an estimate.

Classification7 codes

C08G 65/30
From cyclic ethers by opening of the heterocyclic ring: post-polymerisation treatment, e.g. recovery, purification, drying
C07D 307/08
With only hydrogen atoms or radicals containing only hydrogen and carbon atoms, directly attached to ring carbon atoms: preparation of tetrahydrofuran
C08G 65/20
Cyclic ethers having four or more ring atoms: tetrahydrofuran
C08G 65/324
With inorganic compounds: containing oxygen

Family

No related US applications are recorded in the indexed filing history.

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