Process for the preparation of bifunctional polyphenylene oxide
First Claim
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1. Process for the preparation of polyphenylene ether or polyphenylene oxide having two hydroxyl end groups, corresponding to formula (I):
- ##STR6## wherein R is identical or different and represents hydrogen, an alkyl group having 1 to 4 carbon atoms, an alkoxy group having 1 to 4 carbon atoms or an aryl group having 6 carbon atoms,X represents a group ##STR7## wherein R1 represents hydrogen or an alkyl group having 1 to 4 carbon atoms, O, ##STR8## or SO2, and m and n represent integers from 1 to 200, wherein a mixture of phenols of formula (II) and (III) ##STR9## wherein X and R have the meaning indicated in formula (I) and Y represents Cl, Br or I,are reacted together in the presence of 1×
10-5 to 1 mol per mol of phenol (II) of K3 Fe(CN)6, copper halide copper sulphate, copper carboxylate or copper oxide.
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Abstract
This invention relates to a new process for the preparation of bifunctional polyphenylene oxides.
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6 Claims
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1. Process for the preparation of polyphenylene ether or polyphenylene oxide having two hydroxyl end groups, corresponding to formula (I):
- ##STR6## wherein R is identical or different and represents hydrogen, an alkyl group having 1 to 4 carbon atoms, an alkoxy group having 1 to 4 carbon atoms or an aryl group having 6 carbon atoms,
X represents a group ##STR7## wherein R1 represents hydrogen or an alkyl group having 1 to 4 carbon atoms, O, ##STR8## or SO2, and m and n represent integers from 1 to 200, wherein a mixture of phenols of formula (II) and (III) ##STR9## wherein X and R have the meaning indicated in formula (I) and Y represents Cl, Br or I, are reacted together in the presence of 1×
10-5 to 1 mol per mol of phenol (II) of K3 Fe(CN)6, copper halide copper sulphate, copper carboxylate or copper oxide. - View Dependent Claims (2, 3, 4, 5, 6)
- ##STR6## wherein R is identical or different and represents hydrogen, an alkyl group having 1 to 4 carbon atoms, an alkoxy group having 1 to 4 carbon atoms or an aryl group having 6 carbon atoms,
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Current AssigneeBayer AG
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Original AssigneeBayer AG
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InventorsHeitz, Walter, Risse, Wilhelm
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Primary Examiner(s)Anderson, Harold D.
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Application NumberUS06/780,323Time in Patent Office643 DaysField of Search528/212, 528/210, 528/214, 528/215, 528/217, 528/218, 528/219, 568/33, 568/638, 564/433US Class Current528/212CPC Class CodesC08G 65/38 derived from phenolsC08G 65/44 by oxidation of phenols
