Branched polycarbonate derived from single-ring aromatic compound
AssigneeEnichem Tecnoresine S.p.A.
InventorsPiero Manaresi, Francesco Pilati, Corrado Berti, Alberto Petri
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Abstract
In the present invention disclosed are high-molecular-weight, soluble, thermoplastic branched polycarbonates endowed with improved properties, and suitable to blow-moulding fabrication. Such polycarbonates are characterized by the presence, in their structure, of units deriving from the following single-ring aromatic compounds: ##STR1## wherein R.sub.1 indicates H, --COCl, --SO.sub.2 Cl; R.sub.2, and R.sub.3, equal to or different from each other, indicate --COCl or SO.sub.2 Cl. The above-said compounds are directly used in the syntheses.
Claims3
Branched aromatic polycarbonate comprised of units derived from the copolymerization of at least one aromatic dihydroxy compound, a carbonate precursor, and at least one single-ring aromatic compound, having the following formula (I):
- ##STR4## wherein R.sub.1 represents H, --COCl, or --SO.sub.2 Cl, and R.sub.2 and R.sub.3, represent, independently, --COCl or --SO.sub.2 Cl.
Dependencies are inferred from the claim text.