Aqueous dyestuff dispersions

• US 4,186,029 A
• Filed: 07/19/1978
• Issued: 01/29/1980
• Est. Priority Date: 07/20/1977
• Status: Expired due to Term

• Current Assignee: Bayer AG
• Original Assignee: Bayer AG
• Inventors: Wolf, Karlheinz, Schulze, Hans, Hornle, Reinhold, Aign, Volker, Bremer, Fritz, Rasche, Peter, Berlenbach, Wilhelm
• Primary Examiner(s): Poer, James
• Application Number:
  US05/926,076
• Time in Patent Office: 559 Days
• Field of Search: 106/308 Q
• US Class Current: 8/552
• CPC Class Codes: C09B 67/0089 non ionic dispersing agent, e.g. EO or PO addition products
• CPC Class Codes: D06L 4/664 Preparations of optical brighteners; Optical brighteners in aerosol form; Physical treatment of optical brighteners
• CPC Class Codes: D06P 1/6135 from aromatic alcohols or from phenols, naphthols

Abstract

Aqueous dyestuff dispersions which contain water-insoluble dyestuffs and water-soluble oxyalkylation products of compounds which are obtainable by the addition of styrene or its derivatives onto phenols or naphthols, or derivatives of such oxyalkylation products, are suitable for pigmenting natural or synthetic materials.

Claims

1. Aqueous dyestuff dispersions comprising water-insoluble dyestuff and a water-soluble oxyalkylation product obtained by condensation of 1 to 3 mols of styrene or vinyltolulene and 1 mol of phenol, reacted with 12 to 100 mols of ethylene oxide.

2. Aqueous dyestuff dispersions according to claim 1, which also contain further customary additives.

3. Aqueous dyestuff dispersions according to claim 1, which contain pigments, disperse dyestuffs, transfer printing dyestuffs or water-insoluble optical brighteners as the water-insoluble dyestuff.

4. Aqueous dyestuff dispersions according to claim 1, which contain 20 to 65% by weight of dyestuff, 2 to 35% by weight of said oxyalkylation product, 0 to 20% by weight of nonionic or anionic surface-active agents, 5 to 20% by weight of water-retention agents and 15 to 40% by weight of water.

5. Aqueous dyestuff dispersions according to claim 4, which contain organic pigments or carbon black as the water-insoluble dyestuff.

6. Aqueous dyestuff dispersions according to claim 5, which contain compounds which are obtainable by condensation of 2.7-2.8 mols of styrene or vinyltoluene and 1 mol of phenol, reacted with 25-30 mols of ethylene oxide, as the oxyalkylation product.