Patent · US Expired

Block copolyetheramides

US5213891A · kind A · utility

18Cited by

11References

20Claims

0Family size

Assignee

Elf Atochem S.A. · FR

Inventors

Philippe Maj · Pierre-Bénite, FR
Daniel Cuzin · Marly-le-Roi, FR

Key dates

Filing date	Jan 30, 1992
Grant date	May 25, 1993
Priority date	—
Expiry date	Jan 30, 2012

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/2969
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

Block copolyetheramides, well adopted for conversion into a wide variety of useful thermoplastic elastomer shaped articles, have the formula: ##STR1## in which D is the residue of a diacid oligamide having an Mn ranging from 300 to 3,000 and/or the residue of the diacid chain limiter, PE is the residue of a polyetherdiol having an Mn ranging from 200 to 5,000,.times.is a straight or branched chain (cyclo)aliphatic or aromatic hydrocarbon having from 4 to 20 carbon atoms, n is a number ranging from 1 to 4, and m is an average number ranging from 2 to 50; these are prepared by polycondensing a multiblock polymer having the formula: ##STR2## with a diamine H.sub.2 N--X--NH.sub.2.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.