Polycondensates as dyeing promoters for hydrophobic polymer articles
AssigneeCiba Specialty Chemicals Corporation
InventorsAndrew Leggio, Mervin Wood, Joseph Suhadolnik, John McNamara, Ying Dong
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Abstract
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, 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, provides dyed articles with good fastness properties.
Claims20
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, 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.
A composition comprising
- (a) a condensation polymer obtained by condensation of at least one poly-hydroxyl-mono-carboxylic acid, and
- (b) a hydrophobic polymer,
- with the proviso that the condensation polymer is not terminated with lipophilic groups.
A process for the preparation of an article comprising a hydrophobic polymer which shows good affinity to dyes, wherein said polymer is brought into contact with a condensation polymer obtained by condensation of at least one poly-hydroxyl-mono-carboxylic acid, with the proviso that the condensation polymer is not terminated with lipophilic groups.
A process for the preparation of a condensation polymer, comprising reacting at least one poly-hydroxyl-mono-carboxylic acid at a temperature of at least 200° C.
Dependencies are inferred from the claim text.