Selectively reflective polymer moulded article and a process for

Details Selectively reflective polymer moulded article and a process for Selectively reflective polymer moulded article and a process for

1997-12-01

1999-12-28

Wu, Shean C.

Compositions

Liquid crystal compositions

428 1, 349183, C09K 1938

Patent

active

060077387

ABSTRACT:
This invention provides, in an easy manner, a film-like moulded article which shows a selective reflection of a wavelength and circularly polarized light. A suitable environment for formation of a liquid crystalline phase is prepared by forming a moulded article (thin film-like moulded article) using a cellulose derivative which can form the liquid crystalline phase (e.g. a water-insoluble cellulose derivative such as ethyl cellulose), and allowing the moulded article to absorb a highly volatile organic solvent by contact with its vapour. After formation of the liquid crystalline phase, removal of the organic solvent provides the object moulded article. The thin film-like moulded article can be employed for an optical element of a circular polarized light-generator or a decoration material.

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Muller et al. Advanced Materials, vol. 9, No. 2, pp. 159-162 (XP000681088) Feb. 1997).

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