| 摘要 |
A flame-retardant phenolic resin which comprises the product obtained on (A) REACTING AT LEAST ONE HALOGENATED COMPOUND REPRESENTED BY THE GENERAL FORMULA (I) <IMAGE> (I) wherein A is -CH=CH2 or -O-CH2-CH=CH2, X is a chlorine atom or a bromine atom, and n is an integer of 1, 2 or 3, with at least one phenol in the presence of an acidic catalyst; and (B) REACTING THE RESULTING REACTION PRODUCT WITH AT LEAST ONE PHOSPHORIC ACID ESTER COMPOUND CONTAINING A PHENOLIC OH group represented by the general formula (II), (III) or (IV). <IMAGE> (II) <IMAGE> (III) <IMAGE> (IV) wherein R1, R2, R3 and R4 each represents an unsubstituted or substituted hydrocarbyl group, where R1 and R2 may be the same or different, and n is 1, 2 or 3, and at least one aldehyde or a precursor thereof in the presence of an acidic or alkali catalyst; and a process for producing the flame-retardant phenolic resin.
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