Fluorescent dyestuffs

• US 4,301,091 A
• Filed: 09/10/1979
• Issued: 11/17/1981
• Est. Priority Date: 09/23/1978
• Status: Expired due to Term

• Current Assignee: Bayer AG
• Original Assignee: Bayer AG
• Inventors: Raue, Roderich, Schieder, Rudolf, Telle, Helmut, Brinkwerth, Wolfgang
• Primary Examiner(s): Siegel, Alan
• Application Number:
  US06/073,773
• Time in Patent Office: 799 Days
• Field of Search: 260/456 P, 260/505 C, 260/505 R, 260/456 A, 260/465 R, 260/465 D, 260/465 H, 260/465 K, 260/465 G, 260/507 C, 260/508, 260/509, 260/510 , 260/512 C, 560/14
• US Class Current: 562/87
• CPC Class Codes: C07C 309/00 Sulfonic acids; Halides, esters, or anhydrides thereof
• CPC Class Codes: C07F 9/4056 Esters of arylalkanephosphonic acids C07F9/4025 takes precedence
• CPC Class Codes: H01S 3/20 Liquids
• CPC Class Codes: H01S 3/213 including an organic dye

Abstract

Fluorescent dyestuffs of the formula ##STR1## wherein: R₁ and R₂ independently of one another represent hydrogen, a salt-forming cation, an alkyl radical with 1 to 8 carbon atoms or an aralkyl radical which is optionally substituted by non-chromophoric groups,

R₂ to R₅ independently of one another represent hydrogen, alkyl, trifluoromethyl, alkoxy, aralkoxy, alkenyloxy, halogen or the carboxyl, cyano, alkylsulphonyl, arylsulphonyl, carboxamide or sulphonamide group or a carboxylic acid ester group, m and n independently of one another denote 0, 1 or 2 and the sum of m+n must be at least 2, and o, p, q and r independently of one another represent 0, 1 or 2.

processes for their preparation, their use for whitening organic materials and a process for the production of a coherent laser emission using the fluorescent dyestuffs according to formula I.

Claims

1. Fluorescent dyestuffs of the formula ##STR58## wherein R and R₁ independently of one another represent hydrogen, a salt-forming cation, an alkyl radical with 1 to 8 carbon atoms or an aralkyl radical which is optionally substituted by non-chromophoric groups,

R₂ to R₅ independently of one another represent hydrogen, alkyl, trifluoromethyl, alkoxy, aralkoxy, alkenyloxy, halogen, the carboxyl, cyano, alkylsulphonyl, arylsulphonyl, carboxamide or sulphonamide group or a carboxylic acid ester group, m and n independently of one another denote 0, 1 or 2 and the sum of m+n must be at least 2, and o, p, q and r independently of one another represent 0, 1 or 2.

2. Fluorescent dyestuffs of the formula ##STR59## wherein Me represents hydrogen, sodium, potassium or an optionally substituted ammonium radical,

R₂ '"'"' to R₅ '"'"' independently of one another represent hydrogen, C₁ - to C₄ -alkyl, C₂ - to C₅ -alkoxyalkyl, benzyloxy, phenoxy, cyano, halogen or a carboxyl, carboxylic acid ester or carboxamide group and

s and t denote 0 or 1.

3. Fluorescent dyestuffs of the formula ##STR60## wherein Me and R₂ '"'"' to R₅ '"'"' have the same meaning as in claim 2 and

m'"'"' and n'"'"' represent 0 or 1 and the sum of m'"'"' and n'"'"' must be at least 2.

4. A fluorescent dyestuff of the formula ##STR61## in which Me has the same meaning as in claim 2.