Patent · US Expired

Method to prepare copolyesteramides for moulding

US4115475A · kind A · utility

73Cited by

7References

11Claims

0Family size

Assignee

Ato Chimie · FR

Inventors

Paul Foy · Paris, FR
Rene Kern · Savigny-sur-Orge, FR

Key dates

Filing date	Jul 13, 1976
Grant date	Sep 19, 1978
Priority date	—
Expiry date	Jul 13, 1996

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08G69/44
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

A process for synthesizing sequence copolyesteramides with the general formula EQU OH [CO--A--COO--B--O].sub.n H where A is a linear aliphatic polyamide sequence and B is a linear aliphatic copolyesteramide sequence, for use in producing moulded or extruded articles with good mechanical resistance at elevated temperature; the process consists of polycondensation of a linear aliphatic copolyesteramide with hydroxyl end-groups, with a molecular weight of between 1,000 and 10,000, and a polyamide with carboxyl end-groups, with a molecular weight of between 2,000 and 15,000.

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