Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From phenol – phenol ether – or inorganic phenolate
Patent
1993-06-08
1995-01-10
Kight, III, John
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From phenol, phenol ether, or inorganic phenolate
528125, 528126, 528176, 528179, 528182, 528196, 528198, 528201, 528202, 528205, C08G 6400
Patent
active
053808142
ABSTRACT:
A process for producing an aromatic polycarbonate by reacting an aromatic dihydroxy compound, an alkali or alkaline earth metal base and a carbonyl halide compound comprises feeding a polymerization catalyst as the carbonyl halide is fed to a mixture of the aromatic dihydroxy compound, the alkali metal or alkaline earth metal, water and an organic solvent. The molecular weight of the aromatic polycarbonate can be properly controlled, the rate of end capping is high, and coloration of the aromatic polycarbonate is less. Such aromatic polycarbonate can be produced while suppressing hydrolysis of the carbonyl halide compound and/or haloformate compound.
REFERENCES:
patent: 3173891 (1965-03-01), Fry et al.
patent: 3184431 (1965-05-01), Deanin et al.
patent: 3213059 (1965-10-01), Deanin et al.
patent: 3220975 (1965-11-01), Fox
patent: 3240756 (1966-03-01), Deanin et al.
patent: 3275601 (1966-09-01), Schnell et al.
patent: 3787359 (1974-01-01), Horn et al.
patent: 3945969 (1976-03-01), Horn et al.
patent: 3989672 (1976-11-01), Vestergaard
patent: 4277599 (1981-07-01), Mark
patent: 4384108 (1983-05-01), Campbell et al.
Hirao Motokazu
Ito Tomonori
Nakatsuka Masakatsu
Totani Yoshiyuki
Yamaguchi Akihiro
Jones Richard
Kight III John
Mitsui Toatsu Chemicals Inc.
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