Patent · US Expired

Stable, phenolic modified hydrocarbon resins for leucopigments

US4598138A · kind A · utility

2Cited by

6References

13Claims

0Family size

Assignee

Rutgerswerke Aktiengesellschaft · DE

Inventors

Wolfgang Lucke · Oberhausen, DE
Herbert Beneke · Castrop-Rauxel, DE
Peter Staglich · Duisburg, DE

Key dates

Filing date	Nov 15, 1983
Grant date	Jul 1, 1986
Priority date	—
Expiry date	Nov 15, 2003

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB41M5/155
WIPO fieldTextile and paper machines
WIPO sectorMechanical engineering

Abstract

Stable phenolic-modified hydrocarbon resins with an OH number which is 4.5 or greater are resonably priced and toxicologically generally regarded as safe resins for the development of leucopigments, especially for the development of colors in pressure sensitive recording materials. The softening point may be varied by copolymerization with multivalent phenolic compounds and vinyl phenol within the range of 70.degree.-90.degree. C.

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