Process for preparing substituted polyarylene ethers

Details Process for preparing substituted polyarylene ethers Process for preparing substituted polyarylene ethers

2005-08-09

2005-08-09

Truong, Duc (Department: 1711)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

C528S126000, C528S220000, C528S488000, C528S492000, C528S501000, C528S503000, C525S310000, C525S471000, C525S534000

Reexamination Certificate

active

06927273

ABSTRACT:
Processes for preparing polymers of the formulawherein m is 0 or 1, X is chlorine, bromine, or iodine, and n, e, and f are each, independently of the others, integers wherein e may be 0 and n and f are each at least 1 by providing a first reaction mixture containing a first solvent, a compound of the formulawherein Y is a chlorine or fluorine atom, a compound of the formulaand optionally, a compound of the formulaheating the first reaction mixture and removing generated water therefrom, thereby forming an intermediate polymer of the formulaproviding a second reaction mixture containing a second solvent, the intermediate polymer, and a N-halosuccinimide, wherein the halogen atom in the N-halosuccinimide is the same as the halogen atom that is X; and heating the second reaction mixture, thereby forming the polymer.

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