Light-polarizing films
First Claim
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1. A light-polarizing film comprising a uniaxially oriented conductive polymer having about 81% or more of a polarizing coefficient in the wavelength having a minimum transmittance in the range of from 400 to 700 nm, said uniaxially oriented conductive polymer represented by formula (VIII):
- ##STR9## wherein R6 and R7, which may be the same or different, each represents a hydrogen atom, an alkyl group having from 1 to 4 carbon atoms, a nitrile group, an alkoxy group having from 1 to 4 carbon atoms, a halogen atom, or a trihalomethyl group; and
n represents an integer of at least 5, and wherein the conductive polymer represented by formula (VIII) is obtained from a conductive polymer precursor represented by formula (IV);
##STR10## wherein R6 and R7, which may be the same or different, each represents a hydrogen atom, an alkyl group having from 1 to 4 carbon atoms, a nitrile group, an alkoxy group having from 1 to 4 carbon atoms, a halogen atom, or a trihalomethyl group;
R8 and R9, which may be the same or different, each represents a hydrogen atom or an alkyl group having from 1 to 4 carbon atoms;
Z represents an anion; and
n represents an integer of at least 5, wherein the conductive polymer is in the form of a uniaxially oriented conductive polymer obtained by mixing the conductive polymer precursor with a base polymer and subjecting to uniaxially stretching and a releasing treatment.
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Abstract
A light-polarizing film is disclosed, comprising a conductive polymer having dichroism and having an unsaturated cyclic structure in the main chain thereof. The light-polarizing film of the invention has good polarization quality and is excellent in durability under high-temperature and high-humidity conditions.
22 Citations
6 Claims
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1. A light-polarizing film comprising a uniaxially oriented conductive polymer having about 81% or more of a polarizing coefficient in the wavelength having a minimum transmittance in the range of from 400 to 700 nm, said uniaxially oriented conductive polymer represented by formula (VIII):
- ##STR9## wherein R6 and R7, which may be the same or different, each represents a hydrogen atom, an alkyl group having from 1 to 4 carbon atoms, a nitrile group, an alkoxy group having from 1 to 4 carbon atoms, a halogen atom, or a trihalomethyl group; and
n represents an integer of at least 5, and wherein the conductive polymer represented by formula (VIII) is obtained from a conductive polymer precursor represented by formula (IV);
##STR10## wherein R6 and R7, which may be the same or different, each represents a hydrogen atom, an alkyl group having from 1 to 4 carbon atoms, a nitrile group, an alkoxy group having from 1 to 4 carbon atoms, a halogen atom, or a trihalomethyl group;R8 and R9, which may be the same or different, each represents a hydrogen atom or an alkyl group having from 1 to 4 carbon atoms; Z represents an anion; and n represents an integer of at least 5, wherein the conductive polymer is in the form of a uniaxially oriented conductive polymer obtained by mixing the conductive polymer precursor with a base polymer and subjecting to uniaxially stretching and a releasing treatment. - View Dependent Claims (2, 3)
- ##STR9## wherein R6 and R7, which may be the same or different, each represents a hydrogen atom, an alkyl group having from 1 to 4 carbon atoms, a nitrile group, an alkoxy group having from 1 to 4 carbon atoms, a halogen atom, or a trihalomethyl group; and
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4. A light-polarizing film comprising a uniaxially oriented conductive polymer having about 81% or more of a polarizing coefficient in the wavelength having a minimum transmittance in the range of from 400 to 700 nm, wherein the conductive polymer is a conductive polymer having dichroism and represented by formula (IX):
- ##STR11## wherein n represents an integer of at least 5, and wherein the conductive polymer represented by formula (IX) is obtained from a conductive polymer precursor represented by formula (V);
##STR12## wherein n represents an integer of at least 5, wherein the conductive polymer is in the form of a uniaxially oriented conductive polymer obtained by mixing the conductive polymer precursor with a thermoplastic polymer and subjecting to uniaxially stretching and a releasing treatment. - View Dependent Claims (5, 6)
- ##STR11## wherein n represents an integer of at least 5, and wherein the conductive polymer represented by formula (IX) is obtained from a conductive polymer precursor represented by formula (V);
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Current AssigneeSumitomo Chemical Company Limited
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Original AssigneeSumitomo Chemical Company Limited
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InventorsHigashi, Koji, Taguchi, Satoshi, Okada, Toyokazu
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Primary Examiner(s)Maples, John S.
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Assistant Examiner(s)TUCKER, PHILIP C
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Application NumberUS07/544,793Time in Patent Office571 DaysField of Search252/500, 252/585, 252/582, 528/373, 528/380, 528/502, 350/397, 350/398, 428/910, 428/500, 428/515US Class Current252/585CPC Class CodesC08G 61/123 derived from five-membered ...H01B 1/127 comprising five-membered ar...H01B 1/128 comprising six-membered aro...Y10S 428/91 Product with molecular orie...Y10T 428/31855 Of addition polymer from un...Y10T 428/31909 Next to second addition pol...
