# US 7,608,715 B2 · Fluorescent brighteners, methods of preparation thereof, fluorescent brightener compositions, and methods of preparation and uses thereof

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- Number: US 7,608,715 B2
- Document ID: US7608715B2
- Status: Granted
- Kind: B2
- Application number: 11/285,336
- Filed: 2005-11-21
- Published: 2007-05-24
- Granted: 2009-10-27
- Earliest claimed: 2005-11-21
- Assignees: Sabic Innovative Plastics IP B.V.
- Inventors: Shantaram Narayan Naik; Adil Minoo Dhalla; Yogendrasinh Bharatsinh Chauhan
- Web page: https://patentgrep.com/patent/US7608715B2

## CPC

- C08K 5/3437: condensed with carbocyclic rings
- C07D 221/06: Ring systems of three rings
- C07D 221/14: Aza-phenalenes, e.g. 1,8-naphthalimide
- C08K 5/0041: {Optical brightening agents, organic pigments}
- C08L 21/00: Compositions of unspecified rubbers
- C08K: Use of inorganic or non-macromolecular organic substances as compounding ingredients (paints, inks, varnishes, dyes, polishes, adhesives C09)
- C07D: HETEROCYCLIC COMPOUNDS (macromolecular compounds C08)
- C08L: COMPOSITIONS OF MACROMOLECULAR COMPOUNDS (compositions based on polymerisable monomers C08F, C08G; artificial filaments or fibres D01F; textile treating compositions D06)

## Abstract

A compound of Formula (I) wherein R1, R2, and R3 are independently at each occurrence hydrogen, a halogen, a cyano functionality, a C1-C20 aliphatic functionality, a C3-C10 cycloaliphatic functionality or a C3-C20 aromatic functionality, with the proviso that R2 and R3 are not hydrogen when R1 is a methyl or hydrogen; R4 and R5 are independently at each occurrence hydrogen, a halogen, a cyano functionality, a C1-C20 aliphatic functionality, a C3-C10 cycloaliphatic functionality or a C3-C10 aromatic functionality; R7 and R8 are independently at each occurrence, a halogen, a cyano functionality, a C1-C20 aliphatic functionality, a C3-C10 cycloaliphatic functionality or a C3-C10 aromatic functionality; R6 is a C2-C20 aliphatic functionality, a C3-C10 cycloaliphatic functionality or a C3-C20 aromatic functionality; and “n” and “m” are each independently integers having a value of 0 to 3.

## Claims

### Claim 1

A compound having Formula (II)
wherein “p” is an integer having a value of 2 to 4.

### Claim 2

A compound having Formula (III)

### Claim 3 (depends on 1)

The compound of claim 1, wherein the compound has a maximum absorption in the range of 300 to 400 nm, and maximum emission in the range of 400 to 500 nm in dichloromethane.

### Claim 4 (depends on 2)

The compound of claim 2, wherein the compound has a maximum absorption in the range of 300 to 400 nm, and maximum emission in the range of 400 to 500 nm in dichloromethane.