Patent · US Expired

Binder for a coating composition for electrical conductors

US6392000B1 · kind B1 · utility

1Cited by

2References

15Claims

0Family size

Assignee

E.I. DU PONT DE NEMOURS AND COMPANY · US

Inventors

Wolfgang Schuelke · Haan, DE
Rainer Krause · Hochheim, DE
Diethard Winkler · Wuppertal, DE

Key dates

Filing date	Oct 26, 2000
Grant date	May 21, 2002
Priority date	—
Expiry date	Nov 8, 2020

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/2933
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

A binder comprising a block polymer of blocks A and B and at least one of the blocks of C and D or E and F. The blocks are formed from:A monocarboxylic acids having 15 to 50 carbon atoms,B polyisocyanates having at least two isocyanate groups,C polycarboxylic acids having at least two carboxyl and/or anhydride groups,D polyisocyanates having at least two isocyanate groups,E polyalcohols having at least two hydroxyl groups, andF polyisocyanates having at least two isocyanate groups.The composition of the block polymer has the following composition: (f+g)/h=0.5 to 1.0, i/(h−f−g)=2.0 to 25 and a/(c+e)=0.1 to 1.0, where a, c and e=total moles of A, C and E; f=total equivalents of hydroxyl groups, g=total equivalents of carboxyl and anhydride groups, h=total equivalents of isocyanate groups and I=total moles of A to F.

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