Process for producing weather-resistant polycarbonate with triaz

Details Process for producing weather-resistant polycarbonate with triaz Process for producing weather-resistant polycarbonate with triaz

1989-02-08

1990-08-28

Anderson, Harold D.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

528196, 528198, C08G 6362

Patent

active

049526642

ABSTRACT:
A process for producing a weather-resistant polycarbonate resin by solution polymerization, of at least one dihydric phenol and phosgene in which a compound represented by formula (I): ##STR1## wherein R.sup.1, R.sup.2, and R.sup.3, each represents a hydrogen atom, a halogen atom, a nitro group, an alkyl group having from 1 to 20 carbon atoms, an alkoxy group having from 1 to 20 carbon atoms, or an aryl group having from 6 to 20 carbon atoms; m represents 1 or 2; and n represents an integer of from 1 to 10, is used as a terminator. The polycarbonate resin produced exhibits high weather resistance without suffering from volatilization.

REFERENCES:
patent: 3133045 (1964-05-01), Deanin et al.
patent: 3399172 (1968-08-01), Jaquiss
patent: 4153780 (1979-05-01), Narita et al.

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