Patent · US Expired

Metal-free phthalocyanine of the .gamma.-form

US5432277A · kind A · utility

1Cited by

3References

4Claims

0Family size

Assignee

BASF SE

Inventors

Peter Boettcher · Sterling Forest, US
Peter Erk · Bischofswerda, DE
Joachim Jesse · Bad Dürkheim, DE

Key dates

Filing date	Oct 15, 1993
Grant date	Jul 11, 1995
Priority date	—
Expiry date	Oct 15, 2013

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC09B67/0019
WIPO fieldBasic materials chemistry
WIPO sectorChemistry

Abstract

Metal-free phthalocyanine of the .gamma.-form is suitable inter alia for coloring printing inks, plastics and coatings and is characterized by the X-ray powder diagram (Cu.sub.K.alpha.) having the essential glancing angles 2 theta [.degree.]6.8, 7.4, 13.6, 14.9, 15.9, 16.9, 20.5, 22.4, 24.7, 26.2 and 27.8, possibly in mixture with other crystal forms, in which case the glancing angles may be shifted by .+-.0.2.degree. (FIG. 1).

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