Process for the production of three-dimensionally crosslinked po

Details Process for the production of three-dimensionally crosslinked po Process for the production of three-dimensionally crosslinked po

1998-04-28

2000-06-06

Tucker, Philip

Compositions

Light transmission modifying compositions

Producing polarized light

25229901, 428 1, F21V 914, C09K 1952

Patent

active

060714387

ABSTRACT:
The invention relates to a process for the preparation of three-dimensionally crosslinked polymeric materials having a broad cholesteric reflection band, which comprises bringing polymeric materials having cholesteric properties and an extractable material content into contact with a solvent or solvent mixture.

REFERENCES:
patent: 4388453 (1983-06-01), Finkelmann et al.
patent: 4637896 (1987-01-01), Shannon
patent: 5211877 (1993-05-01), Andrejewski et al.
patent: 5362315 (1994-11-01), Muller-Rees et al.
patent: 5683622 (1997-11-01), Kratzschmar et al.
Database WPI, Class A89, AN94-257675, JP 06 186 534 A (Nippon Oil Co Ltd), (1994).
Database WPI, Class A89, AN86-085U77, (1986) JP 61 032 801 A (Matsushita Elec Ind Co Ltd).

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