Chiral CLCPs containing colored monomers

Details Chiral CLCPs containing colored monomers Chiral CLCPs containing colored monomers

1997-05-21

1998-11-17

Kelly, C. H.

Compositions

Liquid crystal compositions

25229962, 2522991, 25229961, 252582, C09K 1952, C09K 1932, C09K 1934, F21V 900

Patent

active

058371605

ABSTRACT:
The invention relates to cholesteric liquid-crystalline polymers containing at least one colored comonomer which absorbs light in the visible wavelength region. The colored comonomers can be bifunctional hydroxyl, amino and/or carboxyl derivatives of anthranthrone, anthraquinone, dioxazine, phthalocyanine, quinacridone, diketopyrrolopyrrole, perylene, perinone, azomethine or azo pigments or aminostilbenecarboxylic acids. Coatings containing such polymers are distinguished by coloristic effects which depend on the viewing angle and cannot be achieved by absorption pigments alone or by CLCP effect coatings.

REFERENCES:
patent: 4631328 (1986-12-01), Ringsdorf et al.
patent: 4943617 (1990-07-01), Etzbach et al.
patent: 5093025 (1992-03-01), Koide et al.
patent: 5098878 (1992-03-01), Riepl et al.
patent: 5389285 (1995-02-01), Shannon et al.
patent: 5514296 (1996-05-01), Chen et al.

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