Patent Number: 8,507,590

Title: Fluorescent brighteners, methods of preparation thereof, fluorescent brightener compositions, and methods of preparation and uses thereof

Abstract: A compound of Formula (I) ##STR00001## wherein R.sup.1, R.sup.2, and R.sup.3 are independently at each occurrence hydrogen, a halogen, a cyano functionality, a C.sub.1-C.sub.20 aliphatic functionality, a C.sub.3-C.sub.10 cycloaliphatic functionality or a C.sub.3-C.sub.20 aromatic functionality, with the proviso that R.sup.2 and R.sup.3 are not hydrogen when R.sup.1 is a methyl or hydrogen; R.sup.4 and R.sup.5 are independently at each occurrence hydrogen, a halogen, a cyano functionality, a C.sub.1-C.sub.20 aliphatic functionality, a C.sub.3-C.sub.10 cycloaliphatic functionality or a C.sub.3-C.sub.10 aromatic functionality; R.sup.7 and R.sup.8 are independently at each occurrence, a halogen, a cyano functionality, a C.sub.1-C.sub.20 aliphatic functionality, a C.sub.3-C.sub.10 cycloaliphatic functionality or a C.sub.3-C.sub.10 aromatic functionality; R.sup.6 is a C.sub.2-C.sub.20 aliphatic functionality, a C.sub.3-C.sub.10 cycloaliphatic functionality or a C.sub.3-C.sub.20 aromatic functionality; and "n" and "m" are each independently integers having a value of 0 to 3.

Inventors: Naik; Shantaram Narayan (Bangalore, IN), Dhalla; Adil Minoo (Dadar Mumbai, IN), Chauhan; Yogendrasinh Bharatsinh (Gujarat, IN)

Assignee: Sabic Innovative Plastics IP B.V.

International Classification: C07D 221/06 (20060101)

Expiration Date: 2021-08-13 0:00:00