Patent · US Expired

Mixtures of solutions of polyamidocarboxylic acids and solutions of polyimide-forming starting materials

US6074757A · kind A · utility

1Cited by

2References

8Claims

0Family size

Assignee

Schenectady Europe GmbH · DE

Inventors

Klaus-Wilhelm Lienert · Hamburg, DE
Gerold Schmidt · Hamburg, DE
Rainer Blum · Ludwigshafen, DE

Key dates

Filing date	Feb 17, 1998
Grant date	Jun 13, 2000
Priority date	—
Expiry date	Feb 17, 2018

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/31721
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

The invention relates to mixtures of preferably from 80 to 99.9% by weight, based on the mixture, of a solution S1 comprising one or more polyamidocarboxylic acids and preferably from 0.1 to 20% by weight, based on the mixture, of a solution S2 comprising one or more, preferably primary, diamines and one or more tetracarboxylic acid diesters, processes for producing polyimide coatings using such mixtures, the use of such mixtures for producing polyimide coatings, and also polyamide-coated articles obtainable using such mixtures.

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