Pigment with color dependent on viewing angle, method of making

Details Pigment with color dependent on viewing angle, method of making Pigment with color dependent on viewing angle, method of making

1997-01-16

1999-11-02

Yoon, Tae

Compositions: coating or plastic

Materials or ingredients

Pigment, filler, or aggregate compositions, e.g., stone,...

106490, 106506, 25229901, 2522997, 428 1, 523171, 524269, C09K 1902, C09K 1904, C09K 1936, C09D 500

Patent

active

059762390

ABSTRACT:
The invention relates to a pigment with color dependent on the viewing angle, which has been obtained by three-dimensional crosslinking of oriented substances of liquid-crystalline structure having a chiral phase. In order to stabilize the color of such a pigment at elevated temperatures, crosslinking is carried out in the presence of at least one additional, color-neutral compound comprising at least two crosslinkable double bonds.

REFERENCES:
patent: 4388453 (1983-06-01), Finkelmann et al.
patent: 4637896 (1987-01-01), Shannon
patent: 5039208 (1991-08-01), Ornishi et al.
patent: 5362315 (1994-11-01), Mueller-Rees et al.

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