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Motoshi Ishikura Patents |
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Inventor: Ishikura; Motoshi
Address: Hiroshima, JP
No. of patents: 2
Patents:
| Patent Number |
Title Of Patent |
Date Issued |
| 5298531 |
Process for the preparation of polyimide foam |
March 29, 1994 |
| A polyimide foam is prepared by heating a mixture comprising an alkyl ester of 4,4'-oxydiphthalic acid and a diamine at a temperature of 60.degree. to 350.degree. C. This foam is elastic and flame-retardant and has an excellent resistance to acid and alkali. |
| 5273657 |
Process for preparing modified porous membrane |
December 28, 1993 |
| A modified porous membrane can be prepared by dissolving an aromatic polymer having a thioether group in an organic solvent, forming membrane of the aromatic polymer from the resultant solution by phase conversion and oxidizing the formed membrane. This modified porous membrane can e |
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