发明名称 |
Film of aromatic polyethersulfone process for the production thereof and solution composition for the production thereof |
摘要 |
An optically isotropic film of an aromatic polyethersulfone, which is useful as a substrate for a liquid crystal display device, and an optically anisotropic, uniaxially oriented film of an aromatic polyethersulfone, which is useful as a phase difference plate for a liquid crystal display device. The optically isotropic film is produced by casting an aromatic polyethersulfone solution composition comprising 15 to 40 parts by weight of a solvent which contains at least 60% by weight of 1,3-dioxolane and can dissolve an aromatic polyethersulfone and 10 parts by weight of the aromatic polyethersulfone, on a substrate, and heating the cast solution composition containing a solvent to evaporate the solvent off.
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申请公布号 |
US5645766(A) |
申请公布日期 |
1997.07.08 |
申请号 |
US19950415136 |
申请日期 |
1995.03.30 |
申请人 |
TEIJIN LIMITED |
发明人 |
SHIRO, TAKASHI;IWATA, KAORU;NITTA, HIDEAKI;SASAKI, TAKESHI;YONEMURA, UTAMI |
分类号 |
C08K5/1535;C08K5/1575;G02F1/1333;G02F1/13363;(IPC1-7):F21V9/00;C08K5/15 |
主分类号 |
C08K5/1535 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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