Stock material or miscellaneous articles – Liquid crystal optical display having layer of specified... – With charge transferring layer of specified composition
Patent
1988-11-30
1990-11-06
Page, Thurman K.
Stock material or miscellaneous articles
Liquid crystal optical display having layer of specified...
With charge transferring layer of specified composition
428913, C09K 1900
Patent
active
049685392
ABSTRACT:
A polymer membrane for delivering a drug is provided. The membrane is capable of regulating the delivery of the drug and comprises (A) a porous hydrophobic polymer membrane having a pore diameter of not larger than 3 .mu.m and a porosity of 10 to 90% which is immobilized with (B) a specific liquid crystal-forming compound having a gel/liquid crystal transition temperature in the range of 25.degree. to 45.degree. C.
REFERENCES:
patent: 4513034 (1985-04-01), Sparer et al.
patent: 4692336 (1987-09-01), Eckenhoff et al.
Aoyagi Takao
Nozawa Iwao
Sato Shuji
Suzuki Yousuke
Yasu Minako
Lion Corporation
Page Thurman K.
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