Patent · US Expired

Thermoreactive recording material

US4918048A · kind A · utility

1Cited by

2References

8Claims

0Family size

Assignee

BAYER HEALTHCARE LLC · DE

Inventors

Hubertus Psaar · Leverkusen, DE
Siegfried Korte · Odenthal, DE

Key dates

Filing date	Apr 26, 1988
Grant date	Apr 17, 1990
Priority date	—
Expiry date	Apr 26, 2008

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB41M5/3331
WIPO fieldTextile and paper machines
WIPO sectorMechanical engineering

Abstract

A thermoreactive recording material contains a dyestuff precursor and an acid-modified polymer of acrylonitrile or methacrylonitrile and a 4-hydroxybenzoic acid ester as acceptor.

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