Process for making a temporary color change on a plastic materia

Details Process for making a temporary color change on a plastic materia Process for making a temporary color change on a plastic materia

1997-09-26

1998-12-01

Hafer, Robert A.

Amusement devices: toys

Figure toy or accessory therefor

Having means for simulating personal toilet or medical...

446394, A63H 344

Patent

active

058429050

ABSTRACT:
A simple, general purpose temporary dyeing process for coloring plastic or plastic fabric is disclosed. A colorless, but pH sensitive indicator solution is applied to a plastic material, such as the hair of a fashion doll, without changing the hair color. A developer solution of a specific pH range is subsequently applied to the doll hair, thereby causing the color of the hair to change. As the hair dries and the developer solution evaporates, the hair returns to its original color.

REFERENCES:
patent: 3382607 (1968-05-01), Ryan et al.
patent: 4276207 (1981-06-01), Lester et al.
patent: 5083967 (1992-01-01), Yokoe et al.
patent: 5346422 (1994-09-01), Bagrodia

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