The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 24, 1992
Filed:
Mar. 16, 1992
Philippe Maj, Thiberville, FR;
Noelle Forichon, Le Neubourg, FR;
Elf Atochem S.A., Puteaux, FR;
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: