Claims
- 1. A 1,4-bis-[oxazol-2'-yl]-naphthalene, of the formula ##STR60## in which R.sup.v denotes chlorine, and R.sub.4 ''' denotes hydrogen, halogen in the 5-position or 6-position, alkyl with 1 to 4 carbon atoms or --COOY, wherein Y represents hydrogen, a salt-forming cation or alkyl with 1 to 4 carbon atoms, or denotes alkylsulphonyl with 1 to 4 carbon atoms.
- 2. A 1,4-bis-[oxazol-2'-yl]-naphthalene according to claim 1, of the formula ##STR61## in which R.sub.4 "" denotes hydrogen or, in the 5-position or 6-position, alkyl with 1 to 4 carbon atoms or --COOY, wherein Y represents alkyl with 1 to 4 carbon atoms.
- 3. The 1,4-bis-[oxazol-2'-yl]-naphthalene according to claim 1, of the formula ##STR62##
- 4. The 1,4-bis-[oxazol-2'-yl]-naphthalene according to claim 1, of the formula ##STR63##
- 5. The 1,4-bis-[oxazol-2'-yl]-naphthalene according to claim 1, of the formula ##STR64##
- 6. Process for optically brightening organic materials, wherein a compound as defined in one of claim 1 is incorporated into these materials or is applied to the surface thereof.
- 7. Process according to claim 6, wherein a compound as defined in claim 2 is incorporated into the materials or applied to the surface thereof.
- 8. Process according to claim 6 for optically brightening materials made of polyester.
- 9. Process according to claim 8, wherein compounds as defined in claims 3 or 4 are incorporated into the polyester or applied to the surface thereof.
- 10. Process according to claim 6, wherein 0.001 to 2%, of the brightener, based on the weight of the material to be optically brightened, is applied to the materials to be brightened or is incorporated into these materials.
Priority Claims (1)
Number |
Date |
Country |
Kind |
13213/75 |
Oct 1975 |
CHX |
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Parent Case Info
This is a continuation of application Ser. No. 727,119 filed on Sept. 27, 1976 now abandoned.
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1302052 |
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670890 |
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Continuations (1)
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Number |
Date |
Country |
Parent |
727119 |
Sep 1976 |
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