Polyphenylene ether resin

摘要

PCT No. PCT/JP96/00931 Sec. 371 Date Oct. 7, 1997 Sec. 102(e) Date Oct. 7, 1997 PCT Filed Apr. 5, 1996 PCT Pub. No. WO96/32435 PCT Pub. Date Oct. 17, 1996A poly(phenylene ether) resin composed of structural units represented by the general formula: ach alkyl, cycloalkyl, etc. or H (provided that two or more of R1, R2 and R3 do not represent H at the same time), or one of R1, R2 and R3 represents alkyl or H while the others together form a saturated ring, or R1, R2 and R3 together form an aromatic ring; A represents alkyl; p is an integer of from 3 to 5; and Y- represents a pharmaceutically acceptable acid residue) and/or structural units represented by the general formula: <IMAGE> (II) (wherein R4, R5 and R6 represents each alkyl, cycloalkyl, etc. or H (provided that two or more of R4, R5 and R6 do not represent H at the same time), or one of R4, R5 and R6 represents alkyl or H while the others together form a saturated ring, or R4, R5 and R6 together form an aromatic ring; and A, p and Y- have same meanings as defined above) and structural units represented by the general formula: <IMAGE> (III) (wherein R7 and R8 represents each alkyl, cycloalkyl, etc. or together form a saturated ring; q is an integer of from 3 to 20; and A, p, and Y- have same meanings as defined above) wherein the sum of the contents of the structural units represented by the general formula (I) and the structural units represented by the general formula (II) amounts to 40 to 96% by mole and the content of the structural units represented by the general formula (III) amounts to 4 to 60% by mole based upon the content of phenylene ether component and a process for producing the same. The poly(phenylene ether) resins have the effect of adsorbing bile acids and are useful as a cholesterol reducing agent.