Method for color dyeing polycarbonate

Details Method for color dyeing polycarbonate Method for color dyeing polycarbonate

1994-06-14

1995-09-26

Lieberman, Paul

Bleaching and dyeing; fluid treatment and chemical modification

Pattern effect dyeing, process, compositions, or products

Discontinuous or multidirectional movement of substrate

8506, 8512, 8609, 8611, 86371, 4271631, 427164, 427169, 427162, D06P 500

Patent

active

054531004

ABSTRACT:
Polycarbonate materials are dyed by immersion into a mixture of dye or pigment dissolved in a solvent blend. The blend is made up of an impregnating solvent, which attacks the polycarbonate and allows impregnation of the dye or pigment, and a moderating solvent which reduces the aggressiveness of the impregnating solvent. A graded tint is provided by slowly withdrawing the immersed polycarbonate material from the mixture. Polycarbonate materials having a graded tint, especially sheets in the form of lenses and goggles, are also provided.

REFERENCES:
patent: 4377389 (1983-03-01), Haddad et al.

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