Reversibly color-changing shaped material and process for produc

Details Reversibly color-changing shaped material and process for produc Reversibly color-changing shaped material and process for produc

1993-04-21

1995-07-04

Ryan, Patrick J.

Stock material or miscellaneous articles

Coated or structually defined flake, particle, cell, strand,...

Rod, strand, filament or fiber

428370, 4283105, 4283179, 4283184, 4283155, 428913, 4283044, D02G 300

Patent

active

054298717

ABSTRACT:
The present invention relates to a shaped material consisting of a layer having open microvoids (hereinafter referred to as light-scattering layer) and a layer having a hue different from that of the light-scattering layer (hereinafter referred to as color-developing layer), the light-scattering layer constituting at least part of the outer surface of the shaped material and the color-developing layer constituting the rest of the shaped material, which shaped material changes its color reversibly depending upon its moist or dry condition, as well as to a process for producing said shaped material.

REFERENCES:
patent: 4299880 (1981-11-01), Arens
patent: 4312916 (1982-01-01), Kakumara et al.
patent: 4769273 (1988-08-01), Hoeschele et al.
patent: 4994314 (1991-02-01), Rosenfeld et al.
patent: 5019062 (1991-02-01), Ryan et al.
patent: 5234766 (1993-08-01), Fukui et al.
patent: 5248470 (1993-09-01), Dollinger et al.
patent: 5252396 (1993-10-01), Fukui et al.
patent: 5264531 (1993-11-01), Fukui et al.

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