Process for the dyeing of polymers of propylene, butene-1...

Details Process for the dyeing of polymers of propylene, butene-1... Process for the dyeing of polymers of propylene, butene-1...

D - Textiles, Paper

06

P

8/3

D06P 3/79 (2006.01) C08L 23/02 (2006.01) D06P 1/41 (2006.01) D06P 5/22 (2006.01)

Patent

CA 1304895

ABSTRACT OF THE INVENTION A process for the dyeing of polymers of propylene, butene-1 and 4-methyl-pentene-1 is disclosed. The process involves contacting articles of the polymer with an aqueous dyebath containing a basic dye in a concentration of at least 0.4 g/l and at a pH of at least 5Ø The temperature of the aqueous dyebath is at least 45°C. The article is maintained in contact with the dyebath for at least 20 seconds. The polymer of propylene is preferably a blend of 50-99 parts of a homopolymer of propylene or copolymer of propylene and ethylene with 1-50 parts of a direct or graft copolymer of an alpha-olefin having carboxylic acid, carboxylic acid anhydride or carboxyl-type ionomeric groups. Dyed polymers are obtained. DC-0196

552879

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