| 摘要 |
PROBLEM TO BE SOLVED: To provide a phenolic polymer of very high purity and a derivative thereof that can be developed into electronic material applications. SOLUTION: The polymer (A) comprises a hydroxyphenylene unit (α) and an oxypheneylene unit (β) and is represented by general formula (1) (wherein R<SP>1</SP>-R<SP>13</SP>are each independently a hydrogen atom or a 1-5C linear or branched alkyl group). COPYRIGHT: (C)2008,JPO&INPIT
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