Polycondensates as dyeing promoters for hydrophobic polymer articles
AssigneeCiba Specialty Chemicals Corporation
InventorsAndrew J. Leggio, Mervin G. Wood, Joseph Suhadolnik, John J. McNamara, Ying Dong
Life of this patent
Estimating the term…
Abstract
A process for dyeing or printing an article comprising a hydrophobic polymer, wherein the hydrophobic polymer is brought into contact with a condensation polymer obtained by condensation of at least one poly-hydroxyl-mono-carboxylic acid, prior to or simultaneously with the treatment of the article with a color imparting compound, with the proviso that the condensation polymer is not terminated with lipophilic groups. The process provides dyed articles with good fastness properties.
Claims9
A process for dyeing or printing an article comprising a hydrophobic polymer, wherein said polymer is brought into contact with a condensation polymer obtained by condensation of at least one poly-hydroxyl-mono-carboxylic acid, of the formula
- wherein
- R is C1-C12alkyl or a radical—CH2—OH, prior to or simultaneously with the treatment of said article with a color imparting compound, with the proviso that the condensation polymer is not terminated with lipophilic groups, and where the condensation polymer is a homopolymer.
Dependencies are inferred from the claim text.