Method for dyeing polyethylene terephthalate films

Details Method for dyeing polyethylene terephthalate films Method for dyeing polyethylene terephthalate films

1992-09-28

1994-08-16

Lieberman, Paul

Bleaching and dyeing; fluid treatment and chemical modification

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

Polymer from polyol and a polycarboxylic acid or derivative...

8495, 8506, 8582, 8922, 8933, 8938, D06P 352, C09B 6700

Patent

active

053383184

ABSTRACT:
A method of dyeing film of polyethylene terephthalate wherein the film is immersed in a dye bath of solvent or dispersion dyes dissolved in a carrier consisting of glycerol triacetate, the dye bath being heated so the film is raised to the glass transition temperature of the film, and the dye and carrier are absorbed into the film. The dye and carrier are removed from the surface of the film by a washing bath, and the film is then heated to remove the carrier absorbed in the film without depreciating the dyestuff or the film.

REFERENCES:
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patent: 3034847 (1962-05-01), Chapman
patent: 3467481 (1969-09-01), Gold
patent: 4581035 (1986-04-01), Wilson
patent: 4602916 (1986-07-01), Wilson
patent: 4609375 (1986-09-01), Wilson et al.
patent: 4812142 (1989-03-01), Brodmann
patent: 5162046 (1992-11-01), Mercado

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