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Idemitsu Petrochemmical Co., Ltd. Patents |
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Assignee: Idemitsu Petrochemmical Co., Ltd.
Address: Tokyo, JP
No. of patents: 1
Patents:
| Patent Number |
Title Of Patent |
Date Issued |
| 5290911 |
Process for preparing polyarylene thioether from thiophenol |
March 1, 1994 |
| A process for preparing a polyarylene thioether, comprising oxidation coupling polymerizing with oxygen and a catalyst in the presence of an acid, at least one compound selected from the group consisting of thiophenols of the formula (II): ##STR1## wherein R.sup.9 to R.sup.12 are |
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