Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From phenol – phenol ether – or inorganic phenolate
Patent
1981-10-21
1984-01-17
Lee, Lester L.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From phenol, phenol ether, or inorganic phenolate
528125, 528126, 528173, 528179, 528182, 528191, 528193, 528194, C08G 6318
Patent
active
044265115
ABSTRACT:
A heat resisting aromatic polyester resin comprising (a) recurring units of the formula (I): ##STR1## wherein X is a bivalent group selected from the group consisting of an unsubstituted or substituted bivalent hydrocarbon group having 1 to 10 carbon atoms,--O--, --S--, --SO.sub.2 --and--CO--, and (b) recurring units of the formula (II): ##STR2## wherein X is as defined above, R and R' are a group selected from the group consisting of alkyl, aryl, aralkyl, alkoxyl, aryloxyl and phenylalkoxyl groups having 1 to 20 carbon atoms, their substituted groups, a halogen atom and a mixture thereof, p+q=1 to 8, and m and n are 0 or 1, but n is not 0 when m is 1, provided that up to 10% by mole of the total of the units: ##STR3## in the formulas (I) and (II) may be replaced with units: ##STR4## the ratio of (a)/[(a)+(b)]being from 0.05 to 0.95 by mole. The polyester resin is substantially amorphous and soluble in some organic solvents, and has an excellent heat resistance. The polyester resin is prepared by reacting terephthaloyl chloride with alkali metal salts of at least two kinds of particular bivalent phenolic compounds in the presence of a phase transfer catalyst.
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Asada Masahiro
Matsuura Miyuki
Yonezawa Kazuya
Kanegafuchi Kagaku Kogyo & Kabushiki Kaisha
Lee Lester L.
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