Block polyetheramides

Details Block polyetheramides Block polyetheramides

1992-03-16

1992-11-24

Foelak, Morton

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

Synthetic resins

From carboxylic acid or derivative thereof

528274, 528288, 528292, 528300, 528301, 528302, 528307, 528308, 528332, 528335, 525425, 525432, 525434, 525440, 428357, 428373, 4284744, C08G 63685

Patent

active

051663090

ABSTRACT:
Novel block polyetheramides, well adapted for the usual thermoplastic elastomer applications, e.g., as molded or extruded shaped articles, films, sheaths, composites and the like, have the following general formula: ##STR1## in which D is the residue of an oligoamidediacid having an Mn ranging from 300 to 8,000 and/or the residue of the diacidic polymer chain limiter, PE is the residue of a polyetherdiol having an Mn ranging from 200 to 5,000, X is a linear or branched, (cyclo)aliphatic or aromatic hydrocarbon having form 3 to 20 carbon atoms, R.sub.1 and R.sub.2, which may be identical or different, are either OH or H, n is a number ranging from 0.1 to 10, and m is an average number ranging from 2 to 50, and are prepared by reacting, in the molten state, an oligoamidediacid A with an oligotherdiol B and a low molecular weight diacidic coupler C, the respective molar percentages a, b and c of which being such that:

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