Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From phenol – phenol ether – or inorganic phenolate
Patent
1980-10-27
1982-05-18
Ziegler, J.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From phenol, phenol ether, or inorganic phenolate
528 26, 528272, C08G 6312
Patent
active
043306624
ABSTRACT:
Ordered copolyestercarbonate resins having repeating units of the formula: ##STR1## wherein a portion of R.sup.1 is meta-phenylene and a portion of R.sub.1 is para-phenylene and R is independently an aromatic hydrocarbylene or inertly substituted aromatic hydrocarbylene, e.g., ##STR2## exhibit physical properties such as heat resistance, clarity and impact strength that are superior to the comparable properties of corresponding random copolymers. They exhibit melt processability that is superior to the melt processability of corresponding copolyestercarbonates wherein R.sup.1 is entirely para-phenylene. They exhibit heat resistance, notch sensitivity and low temperature impact resistance that are superior to comparable properties of corresponding copolyestercarbonates wherein R.sup.1 is entirely meta-phenylene. Such resins are useful for making transparent tough films and molded articles having high heat resistance.
REFERENCES:
patent: 4156069 (1979-05-01), Prevorsek et al.
patent: 4173701 (1979-11-01), Murata et al.
patent: 4260731 (1981-04-01), Mori et al.
patent: 4278787 (1981-07-01), Swart et al.
Jenkins Michael S.
The Dow Chemical Company
Ziegler J.
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