Triphenol compound
First Claim
1. A triphenol compound represented by the following formula:
- ##STR13## wherein R1, R2, R3, R4, R5 and R6,independently, represent hydrogen, a halogen, a C1 -C5 alkyl group or a C1 -C5 alkoxy group.
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Accused Products
Abstract
A triphenol type compound represented by the following formula: ##STR1## wherein R1, R2, R3, R4, R5 and R6 independently represent hydrogen, a halogen, a C1 -C5 alkyl group or a C1 -C5 alkoxy group.
The triphenol type compound can be used, as a branching agent for the production of a polycarbonate comprising (A) a carbonic acid component unit, (B) a divalent phenol component unit, and (C) a tripenol type compound component unit derived from the above-mentioned triphenol type compound. The triphenol type compound unit (C) is used in an amount of 0.01 to 10 mole %, based on the divalent phenol component unit (B) and the intrinsic viscosity [η], determined at 25° C. in methylene chloride, of the polycarbonate is 0.4 to 1.0 dl/g and the glass transition temperature (Tg), determined by a differential scanning type calorimeter is 150° C. to 300° C.
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Citations
5 Claims
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1. A triphenol compound represented by the following formula:
- ##STR13## wherein R1, R2, R3, R4, R5 and R6,independently, represent hydrogen, a halogen, a C1 -C5 alkyl group or a C1 -C5 alkoxy group.
- View Dependent Claims (2, 3, 4, 5)
Specification
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- Resources
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Current AssigneeMitsui Chemicals Incorporated (Mitsui Chemicals)
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Original AssigneeMitsui Petrochemical Industries, Ltd. (Mitsui Chemicals)
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InventorsMizuno, Kenichi, Oyoshi, Hajime, Jujo, Yozo
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Primary Examiner(s)ANDERSON, HAROLD
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Application NumberUS06/916,099Time in Patent Office742 DaysField of Search568/720, 568/722, 568/723, 568/729US Class Current568/720CPC Class CodesC07C 39/15 with all hydroxy groups on ...C07C 43/23 containing hydroxy or O-met...
