| http://www.w3.org/ns/prov#value | - The polycarbonate may be based on one or more polyphenols selected from the group consisting of hydroquinone, resorcinol and polyphenols of the Formula ##STR1## wherein R1, R2, R3 and R4 are independency selected from the group consisting of a hydrogen atom, a chlorine atom, a bromine atom and a C1-4 alkyl radical; and X is a bond or divalent radical selected from the group consisting of C1-10 alk
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