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US 6,846,336 B1Granted
Acid-resistant solutions containing aromatic formaldehyde condensation products
AssigneeBayer Aktiengesellschaft
InventorsMichael Gerle, Klaus Walz, Hans Albert Ehlert, Ralf Heinen
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Abstract
The present invention relates to acid-resistant solutions containing aromatic formaldehyde condensation products having sulfonate and/or carboxylate groups, aliphatic carboxylic acids, aromatic sulfonic acids, and glycol ether solvents, to the preparation thereof, and to their use as leveling agents, dispersants or fastness improvers in textile finishing, as tanning agents for leather, and in the stain resist finishing of textile materials.
Claims23
An aqueous solution of a mixture containing
- (A) 5 to 50% by weight of at least one aromatic formaldehyde condensation product containing sulfonate and/or carboxylate groups,
- (B) 2 to 30% by weight of at least one aliphatic carboxylate acid,
- (C) 1 to 20% by weight of at least one aromatic sulfonic acid, and
- (D) 1 to 15% by weight of at least one solvent of the formula (I)
- R1O(CH2CHR3O)n—R2, (I)
- where R1 and R2 are independently H, straight-chain or branched C1-C6-alkyl, phenyl, or C1-C4-acyl, R3 is H or CH3 and n is an integer from 1 to 10, and where the weight percentages indicated for components (A) to (D) are each based on the entire aqueous solution.
3 more elements
Dependencies are inferred from the claim text.