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Patent Searching and Data


Title:
PREPARATION METHOD FOR POLYCARBONATE RESIN COMPOSITION
Document Type and Number:
WIPO Patent Application WO/2016/203916
Kind Code:
A1
Abstract:
A preparation method for a polycarbonate resin composition that is characterized by involving a process for using, as a starting material, a polycarbonate resin that includes a polycarbonate-polyorganosiloxane copolymer (A), and for including at least one substance from among a styrene resin (B), a flame retardant (C), a flame retardant aid (D), and an inorganic filler (E). The polycarbonate-polyorganosiloxane copolymer (A) has a specific polycarbonate block (A-1) and a specific polyorganosiloxane block (A-2). The differential molecular weight distribution curve of the polyorganosiloxane block (A-2), which is obtained from measurement by gel permeation chromatography using polystyrene as a conversion standard and in which the horizontal axis is the logarithmic value log(M) of the molecular weight M and the vertical axis is the value dw/dlog(M) obtained by differentiating the concentration fraction w by the logarithmic value log(M) of the molecular weight, satisfies the following: (1) the maximum value of dw/dlog(M) is reached in the range of 3.4≤log(M)≤4.0; and (2) in the differential molecular weight distribution curve, the value obtained by integrating the values of dw/dlog(M) in the range of 4.00≤log(M)≤4.50 is 6–40% of the value obtained by integrating the values of dw/dlog(M) across the entire range of log(M).

Inventors:
YAMADA AKI (JP)
ISHIKAWA YASUHIRO (JP)
Application Number:
PCT/JP2016/065348
Publication Date:
December 22, 2016
Filing Date:
May 24, 2016
Export Citation:
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Assignee:
IDEMITSU KOSAN CO (JP)
International Classes:
C08L69/00; C08G64/18; C08K3/00; C08K5/42; C08K5/521; C08K7/14; C08L25/04; C08L27/18; C08L55/02
Domestic Patent References:
WO2013051557A12013-04-11
WO2015087595A12015-06-18
Foreign References:
JP2012236926A2012-12-06
JP2014172938A2014-09-22
JP2006523243A2006-10-12
JP2013523938A2013-06-17
JP2015193771A2015-11-05
Other References:
See also references of EP 3312240A4
Attorney, Agent or Firm:
OHTANI, Tamotsu (JP)
Tamotsu Otani (JP)
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