Patent · US Expired

Process for making perylene pigment compositions

US6692562B2 · kind B2 · utility

3Cited by
20References
13Claims
0Family size

Assignee

Inventor

Key dates

Filing dateMar 8, 2002
Grant dateFeb 17, 2004
Priority date—
Expiry dateMay 11, 2022

Classification

  • Technology area (CPC C)Chemistry; Metallurgy
  • CPC primaryC09B67/0034
  • WIPO fieldBasic materials chemistry
  • WIPO sectorChemistry

Abstract

This invention relates to a process of preparing a perylene pigment compositions containing a reactive co-precipitated blend of(1) about 75 to about 99.9 mol %, relative to the pigment composition, of a compound having the formula (I)  whereinR is hydrogen, C1-C6 alkyl, C5-C8 cycloalkyl, C7-C16 aralkyl, or C6-C10 aryl,A is C1-C6 alkyl, C1-C6 alkoxy, a sulfonyl group, amino, ammonium, hydroxy, nitro, or halogen, andm is zero or a number from 1 to 8; and(2) about 0.1 to about 25 mol %, relative to the pigment composition, of a perylene dicarboxamidine imide having the formula (II)  whereinW is optionally substituted or modified C2-C3 alkylene.

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