Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Reexamination Certificate
2007-01-16
2007-01-16
Truong, Duc (Department: 1711)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
C525S332400, C525S288000, C525S291000, C528S086000, C528S171000, C528S255000, C528S219000, C528S373000
Reexamination Certificate
active
10642694
ABSTRACT:
Disclosed is an aromatic sulfonic acid ester derivative represented by the formula (1);in the formula, X is an atom or a group selected from a halogen atom excluding fluorine, —OSO3CH3and —OSO3CF3, A is a divalent electron attractive group, B is a divalent electron donating group or a direct bonding, Rais a hydrocarbon group of 1 to 20 carbon atoms, Ar is an aromatic group having a substituent of —SO3Rb(wherein Rbis a hydrocarbon group of 1 to 20 carbon atoms), m is an integer of 0 to 10, n is an integer of 0 to 10 and k is an integer of 1 to 4. Also disclosed is a process for producing a polyarylene having a sulfonic acid group, which process comprises the steps of coupling polymerization of an aromatic compound containing the derivative of the formula (1), to prepare a polyarylene and hydrolysis of the polyarylene, and which process has high safety and is easily capable of controlling the amount of sulfonoc acid group introduced into a polymer and the introducing position thereof.
REFERENCES:
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Goto Kohei
Kadota Toshiaki
Konno Yousuke
Ohtsuki Toshihiro
Rozhanskii Igor
JSR Corporation
Truong Duc
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