Patent ID: 6512045
Filing Date: 2003-01-28
Classification: C08F

Abstract:
A build-up suppressing composition, comprising a mixture of:a) at least one product deriving from the condensation of an aldehyde (A), a phenol compound (B) and an aromatic carboxylic acid hydroxylated on the aromatic nucleus (C); or at least one product deriving from the condensation between formaldehyde, or a precursor thereof, and a compound of formula (I) in which m is 1, 2 or 3, and R and R1 are independently selected from the group consisting of hydrogen, halogen, (C1-5)alkyl, hydroxyl and carbo(C1-5)alkoxyl; in admixture with b) at least one polycarboxylic acid, optionally having on the non carboxylic carbon atoms 1 to 3 radicals independently selected from the group consisting of halogen atoms and the groups Oâ€”R4 and NHâ€”R5, in which R4 and R5 are independently hydrogen, (C1-6)alkyl or a C1-C6 acyl group, or the alkali metal salts thereof.