Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From phenol – phenol ether – or inorganic phenolate
Patent
1988-07-11
1990-02-13
Anderson, Harold D.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From phenol, phenol ether, or inorganic phenolate
528176, 528184, 528191, 528194, C08G 6944
Patent
active
049008021
ABSTRACT:
High molecular weight thermotropic aromatic copolyesteramides which can be molded/extruded into a wide variety of useful shaped articles having improved thermomechanical properties are comprised of recurring structural units of the formulae (I), optionally (II), (III) and (IV), wherein: ##STR1## in which R.sub.1 is a methyl or ethyl radical or a chlorine or bromine atom, with the proviso that the units (I) may be identical or different; ##STR2## the molar ratio of the units (I) relative to the sum of the units (II)+(III) ranges from 0.95 to 1.05;
the amount of the units (II) in the mixture of (II)+(III) ranges from 0 to 80 mol % and that of the units (III), on the same basis, ranges from 100 to 20 mol %;
the amount of the units (IV), expressed relative to the amount of the units (I), ranges from 5 to 100 mol %; and
said copolyesteramides have a flow temperature ranging from 200.degree. to 350.degree. C.
REFERENCES:
patent: 4169933 (1979-10-01), Jackson, Jr. et al.
patent: 4717624 (1988-01-01), Ikenaga et al.
Anderson Harold D.
Mosley T.
Rhone-Poulenc Chimie
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