Process for dyeing of polymers of ethylene with basic dyes

Details Process for dyeing of polymers of ethylene with basic dyes Process for dyeing of polymers of ethylene with basic dyes

1986-12-30

1988-03-22

Clingman, A. Lionel

Bleaching and dyeing; fluid treatment and chemical modification

Nontextile, dyeing process or product, including inorganic...

Olefin polymer substrate or rubber

8654, 8657, 8928, C08L 2302, C08L 5106, D06P 141, D06P 379

Patent

active

047325712

ABSTRACT:
A process for the dyeing of polymers of ethylene is disclosed. The process involves contacting articles of the polymer with an aqueous dyebath containing a basic dye in a concentration of at least 0.5 g/l and at a pH of at least 5.0. The temperature of the aqueous dyebath is at least 35.degree. C., especially at least 55.degree. C. The article is maintained in contact with the dyebath for at least 20 seconds. The polymer of ethylene is a blend of 65-99 parts of a homopolymer of ethylene or copolymer of ethylene and at least one C.sub.3 -C.sub.10 higher alpha-olefin with 1-35 parts of a direct or graft copolymer of an alpha-olefin having carboxylic acid, carboxylic acid anhydride, ionomeric or --OH groups. Dyed polymers of ethylene are obtained.

REFERENCES:
patent: 3765829 (1973-10-01), Lambert et al.
patent: 4320046 (1982-03-01), Havens

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