Pigment preparations
AssigneeBASF SE
InventorsHorst Belde, Manfred Herrmann, Franz Leppmeier, Dietrich Lach
Life of this patent
Estimating the term…
Abstract
Pigment preparations useful for pigmenting or delustering finishes for leather and leather substitutes consist essentially of pigments or delusterants or a mixture thereof, binders, water and if desired further customary dispersants and auxiliaries, the binders used being copolymers of A) from 40 to 80% by weight of at least one aromatic vinyl compound of the general formula I ##STR1## where R.sup.1, R.sup.2 and R.sup.3 are each hydrogen, methyl or ethyl and n is 1 or 2, B) from 20 to 60% by weight of acrylic acid or methacrylic acid or a mixture thereof, and C) from 0 to 10% by weight of further copolymerizable monomers, in the form of their salts.
Claims15
A pigment preparation, consisting essentially of at least one pigment or delusterant or a mixture thereof, a binder and water, the binder, comprising:
- A) from about 55 to 65% by weight of at least one aromatic vinyl compound of the formula (I):
- ##STR3## wherein R.sup.1, R.sup.2 and R.sup.3 are each hydrogen, methyl or ethyl and n is 1 or 2, and
- B) from about 35 to 45% by weight of acrylic acid in the form of an ammonium salt.
Dependencies are inferred from the claim text.