Polarizing film: polymer film base containing substituted anthra

Details Polarizing film: polymer film base containing substituted anthra Polarizing film: polymer film base containing substituted anthra

1987-06-16

1989-06-20

Clingman, A. Lionel

Bleaching and dyeing; fluid treatment and chemical modification

Nontextile, dyeing process or product, including inorganic...

8512, 8516, 8675, 8677, 8690, C09B 122, G02B 108, G02B 530

Patent

active

048406406

ABSTRACT:
A polarizing film which comprises a film base having thereon an anthraquinone dye of general formula (I): ##STR1## wherein R.sup.1 and R.sup.2 each represents a hydrogen atom, an alkyl group, an alkoxy group, an aralkyloxy group, an aryl group, a cyclohexyl group, a 4-alkylcyclohexyl group, a carboxylic acid ester group, a carboxylic acid amide group, a halogen atom, ##STR2## X represents an oxygen atom, a sulfur atom or an amino group.

REFERENCES:
patent: 2882119 (1959-04-01), Laucius et al.
patent: 4115056 (1978-09-01), Koller et al.

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