US 4,345,052 AGranted

Method for the preparation of polyether ester amides

AssigneeChemische Werke Huls Aktiengesellschaft

InventorsSalih Mumcu, Hans J. Panoch

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Abstract

Method for manufacturing polyether ester amides by polycondensing at ordinary or reduced pressure, optionally in the presence of catalysts. A hot melt of: (a) polyamides having carboxyl end groups with polyethers having hydroxyl end groups and amino end groups; (b) polyamides having carboxyl end groups and polyethers having hydroxyl end groups; (c) polyamides having carboxyl end groups with polyethers having amino end groups; or (d) polyamides having amino end groups with polyethers having carboxyl end groups; is treated at temperatures from about 200.degree. to 300.degree. C. and at a water vapor pressure of about 5 to 25 bars with mechanical agitation and after water is removed by decompression the polycondensation of the polyether ester amide is carried out.

Claims10

Dependent claims

A method for preparing polyether ester amides, comprising:

(A) preparing a mixture of polyamides and polyethers selected from the group consisting of
(a) polyamides having carboxyl end groups and polyethers having hydroxyl end groups and amino end groups;
(b) polyamides having carboxyl end groups and polyethers having hydroxyl end groups;
(c) polyamides having carboxyl end groups and polyethers having amino end groups;
and
(d) polyamides having amino end groups and polyethers having carboxyl end groups;
(B) treating the mixture of (A) as a hot melt at a temperature between about 200.degree. to 300.degree. C. and under a water vapor pressure of about 5 to 25 bars with mechanical agitation for a period of about 15 minutes to 4 hours;
(C) removing the water from (B) by decompression;
and
(D) carrying out a polycondensation of said treated, water free mixture.

7 more elements

Dependencies are inferred from the claim text.

Facts

Application: 06/169,111Filed 10 Jul 1980
Priority: DE 29322349 Aug 1979
Granted: 17 Aug 1982
Term ends: Not estimatedThe source records don’t support an estimate.

Classification5 codes

C08G 69/44
Macromolecular compounds obtained by reactions forming a carboxylic amide link in the main chain of the macromolecule: polyester-amides
Y10S 525/926
Synthetic resins or natural rubbers -- part of the class 520 series: polyamide containing a plurality of oxyalkylene groups
Y10S 525/927
Synthetic resins or natural rubbers -- part of the class 520 series: polyamide admixed with oxyalkylene-containing polymer
C08G
Macromolecular compounds obtained otherwise than by reactions only involving unsaturated carbon-to-carbon bonds