Patent · US Expired

Use of compounds containing polyether chains prepared from epoxidized carboxylic acid derivatives for the removal of printing inks from wastepaper

US5403440A · kind A · utility

9Cited by

6References

11Claims

0Family size

Assignee

Henkel Kommanditgesellschaft auf Aktien · DE

Inventors

Peter Daute · Beverstedt, DE
Berthold Schreck · Goldkronach, DE
Klaus Hornfeck · Mettmann, DE

Key dates

Filing date	Apr 8, 1993
Grant date	Apr 4, 1995
Priority date	—
Expiry date	Apr 8, 2013

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02W30/64
WIPO fieldEnvironmental technology
WIPO sectorChemistry

Abstract

The invention relates to the use of compounds containing polyether chains prepared by reaction of epoxidized C.sub.10-22 carboxylic acid derivatives with polyalkylene glycols having average molecular weights of 100 to 2,000 and/or certain alkoxylated aliphatic compounds for the removal of printing inks from printed wastepaper and/or paper circuit waters.

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