Benzopyran colorants, method of manufacture, and method of use

US7270772B2 · kind B2 · utility

Assignee

• General Electric Company · US

Inventors

• Yogendrasinh Bharatsinh Chauhan · Valsad, IN
• Adil Minoo Dhalla · Mumbai, IN
• Rahul R. Khanwelkar · Jamkhed, IN
• Krishnamoorthy Sivakumar · Bengaluru, IN
• Kiran Puthamane · Jamkhed, IN

Key dates

• Filing date: Nov 28, 2005
• Grant date: Sep 18, 2007
• Expiry date: Nov 28, 2025

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09B57/00
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

A compound of Formula (I)wherein X is hydrogen or a radical of Formula (II), R1 independently at each occurrence is a C1–C20 aliphatic radical, a C3–C10 cycloaliphatic radical, or a C3–C10 aromatic radical; R2, R3, R4 and R5 are independently at each occurrence a halogen, a nitro group, a cyano group, a hydroxy group, a C1–C20 aliphatic radical, a C3–C20 cycloaliphatic radical, or a C6–C20 aromatic radical; and “n”, “q”, and “p” are each independently integers having a value of 0 to 3, and “m” is an integer having a value of 0 to 4.