Claims
- 1. A fluorescent brightener, consisting of 51-99% of an unsymmetrically substituted compound of the formula ##STR53## in which R and R.sub.1 are identical or different and, if R and R.sub.1 are identical, the substituent positions of R and R.sub.1 must be different, and in which R and R.sub.1 independently of one another are CN or a carboxylic acid ester group, and 49-1% of a symmetrically substituted compound of the formula ##STR54## in which R is as defined above and the two R's are bonded to identical positions in their phenyl rings.
- 2. A fluorescent brightener according to claim 1, wherein, in the two individual components, R and R.sub.1 independently of one another are CN or a group of the formula --COOY, in which Y is alkyl, halogenoalkyl, aralkyl, carbalkoxyalkyl, cyanoalkyl, hydroxyalkyl, aminoalkyl, alkylaminoalkyl or dialkylaminoalkyl, and all of the abovementioned alkyl groups and alkyl moieties in composite groups in each case have 1 to 6 carbon atoms; or Y is alkenyl having 3 to 6 carbon atoms, cycloalkyl having 5 to 6 carbon atoms, propargyl, tetrahydrofurfuryl or a group of the formula ##STR55## in which X is hydrogen or methyl and n is an integer between 1 and 4 and the alkyl group has 1 to 6 carbon atoms.
- 3. A fluorescent brightener according to claim 2, wherein R and R.sub.1, in each case independently of one another, are --CN or --COOY, in which Y is alkyl having 1 to 4 C atoms.
- 4. A fluorescent brightener according to claim 2, wherein R and R.sub.1 are CN.
- 5. A fluorescent brightener according to claim 4, consisting of 51-99% of the compound of the formula ##STR56## and 49-1% of the compound of the formula ##STR57##
- 6. A fluorescent brightener of claim 5, consisting of 70-99% of the unsymmetrically substituted compound and 30 to 1% of the symmetrically substituted compound.
- 7. A fluorescent brightener of claim 5, consisting of 80-99% of the unsymmetrically substituted compound and 20-1% of the symmetrically substituted compound.
- 8. A fluorescent brightener of claim 5, consisting of 90-99% of the unsymmetrically substituted compound and 10 to 1% of the symmetrically substituted compound.
- 9. A fluorescent brightener according to claim 4, consisting of 51-99% of the compound of the formula ##STR58## and 49-1% of the compound of the formula ##STR59##
- 10. A fluorescent brightener of claim 9, consisting of 70-99% of the unsymmetrically substituted compound and 30 to 1% of the symmetrically substituted compound.
- 11. A fluorescent brightener of claim 9, consisting of 80-99% of the unsymmetrically substituted compound and 30 to 1% of the symmetrically substituted compound.
- 12. A fluorescent brightener of claim 9, consisting of 80-99% of the unsymmetrically substituted compound and 30 to 1% of the symmetrically substituted compound.
- 13. A fluorescent brightener according to claim 1, consisting of 70-99% of the unsymmetrically substituted compound, and 30 to 1% of the symmetrically substituted compound.
- 14. A fluorescent brightener according to claim 13, consisting of 80-99% of the unsymmetrically substituted compound, and 20-1% of the symmetrically substituted compound.
- 15. A fluorescent brightener according to claim 14, consisting of 90-99% of the unsymmetrically substituted compound, and 10-1% of the symmetrically substituted compound.
- 16. An agent for the fluorescent brightening of high molecular weight organic materials, which contains a fluorescent brightener defined in claim 1.
- 17. An agent according to claim 16, which, in addition to a fluorescent brightener, which gives rise to a greenish to bluish shade on the treated substrate, contains a fluorescent brightener which gives rise to a reddish shade on the treated substrate.
- 18. An agent according to claim 17, which contains, in addition, a fluorescent brightener from the category of the naphthalimides, bis-benzoxazolyl-ethylenes, bis-benzoxazolyl-thiophens, stilbenyl-benzoxazoles, naphthotriazolyl-stilbenes or triazolylcourmarins.
- 19. An agent according to claim 18, which contains, as the fluorescent brightener active substance, 5-90% of a fluorescent brightener, which gives rise to a greenish to bluish shade on the treated substrate, and 95-10%, of a fluorescent brightener which gives rise to the reddish shade on the treated substrate.
- 20. An agent according to claim 19, which contains a fluorescent brightener consisting of the compounds ##STR60## and, in addition, a fluorescent brightener from the category of the naphthotriazolyl-stilbenes or of the triazolylcoumarins.
- 21. A fluorescent brightener according to claim 1 wherein R and R.sub.1 must have different substituent positions in formula (1).
- 22. A mixture of optical brightener compounds consisting of a compound of formula (A) ##STR61## and a compound of formula (C) where formula (C) is ##STR62##
- 23. A mixture according to claim 1 of 51-99% of a compound of formula (A) and 48-1% of a compound of formula (C).
- 24. A mixture of optical brightener compounds consisting of 70% of a compound of the formula ##STR63## and 30% of a compound of the formula ##STR64##
Priority Claims (2)
Number |
Date |
Country |
Kind |
11040/79 |
Dec 1979 |
CHX |
|
3058/80 |
Apr 1980 |
CHX |
|
Parent Case Info
This application is a division of application Ser. No. 474,731, filed Mar. 18, 1983, which application is in turn a continuation of application Ser. No. 213,150, filed Dec. 4, 1980 (now abandoned).
US Referenced Citations (2)
Number |
Name |
Date |
Kind |
4330427 |
Martini et al. |
May 1982 |
|
4336155 |
Martini et al. |
Jun 1982 |
|
Foreign Referenced Citations (3)
Number |
Date |
Country |
0023027 |
Jan 1981 |
EPX |
0032254 |
Jul 1981 |
EPX |
1045443 |
Oct 1966 |
GBX |
Divisions (1)
|
Number |
Date |
Country |
Parent |
474731 |
Mar 1983 |
|
Continuations (1)
|
Number |
Date |
Country |
Parent |
213150 |
Dec 1980 |
|