Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – At least one aryl ring which is part of a fused or bridged...
Patent
1995-06-01
1997-08-19
Mosley, Terressa
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
At least one aryl ring which is part of a fused or bridged...
502 1, 502 2, 502 7, 524147, 524148, 524404, C08J 5100
Patent
active
056589786
ABSTRACT:
A processes for producing a (co)polycarbonate having a low terminal hydroxyl group concentration and being excellent in heat resistance and hue, which comprises melt-polycondensing a dihydroxy compound with a carbonic diester in the presence of a catalyst for transesterification selected from the group consisting of a nitrogen-containing basic compound, an alkali metal borate and an alkaline earth metal borate and in the presence of a specific ester compound.
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Encyclopedia of Chemical Technology, vol. 4 fourth edition, pp. 365-381 (1992).
Database WPI, AN 93-61696 & JP-A-05 009 283, 28 Jun. 1991, Abstract.
Hukuda Yutaka
Kanno Tatsuya
Oshino Yasuhiro
Daicel Chemical Industries Ltd.
Mosley Terressa
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