| 摘要 |
PROBLEM TO BE SOLVED: To obtain a phenoxy resin having excellent heat resistance, electrical insulating properties and transparency. SOLUTION: The method for producing a phenoxy resin comprises reacting a phenol (A) at least composed of a specific fluorene (A1) containing a phenolic hydroxy group such as a 9,9-bis(alkyl-hydroxyphenyl)fluorene (e.g. 9,9-bis(4-hydroxy-3-methylphenyl)fluorene, 9,9-bis(4-hydroxy-3,5-dimethylphenyl)fluorene etc.) with a difunctional epoxy compound (e.g. bisphenol type epoxy resin etc.). In the phenol (A), the ratio of the fluorene (A1) may be ≥80 mol% based on the total of the phenol (A). COPYRIGHT: (C)2009,JPO&INPIT
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