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Method for analyzing copolycarbonate

A technology of copolycarbonate and polysiloxane, which is applied in separation methods, analytical materials, chemical instruments and methods, etc., can solve the problems of inability to determine the molecular weight of polysiloxane, inability to determine the molecular weight distribution of polysiloxane, etc.

Pending Publication Date: 2022-02-25
LG CHEM LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

When using the NMR method, the average molecular weight of the polysiloxane used in the copolycarbonate can be calculated, but the molecular weight distribution of the polysiloxane that affects the physical properties cannot be determined, and when two or more different When the polysiloxane structure is used, the molecular weight of each polysiloxane cannot be determined

Method used

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  • Method for analyzing copolycarbonate
  • Method for analyzing copolycarbonate
  • Method for analyzing copolycarbonate

Examples

Experimental program
Comparison scheme
Effect test

preparation Embodiment 1

[0124] A copolycarbonate comprising a first repeating unit of bisphenol A (BPA) from LG Chem, Ltd. and a second repeating unit from a polysiloxane-containing aromatic diol compound having the following structural formula (based on The total weight of the copolycarbonate contains 7% by weight of polysiloxane-containing aromatic diol compound).

[0125] The polysiloxane-containing aromatic diol compound used as a starting material below had a weight average molecular weight of 4,830 g / mol, a number average molecular weight of 3,300 g / mol, and a molecular weight distribution (Mw / Mn) of 1.47.

[0126]

preparation Embodiment 2

[0128] Copolycarbonate FG1700 of Idemitsu Co. comprising a repeating unit derived from a polysiloxane-containing aromatic diol compound was prepared.

[0129]

preparation Embodiment 3

[0131] Sabic Corp.'s copolycarbonate EXL1414 comprising repeating units derived from a polysiloxane-containing aromatic diol compound was prepared.

[0132]

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Abstract

The present invention relates to a method for analyzing a copolycarbonate. More specifically, the present invention relates to a method for analyzing a copolycarbonate, wherein in a copolycarbonate having a polysiloxane structure introduced into a polycarbonate main chain, the weight average molecular weight, number average molecular weight, and molecular weight distribution of a polysiloxane-containing aromatic diol compound used as a start material can be analyzed more accurately.

Description

technical field [0001] Cross References to Related Applications [0002] This application is based on and claims priority from Korean Patent Applications No. 10-2019-0073540 and No. 10-2020-0074897 filed on June 20, 2019 and June 19, 2020, respectively. The disclosure content of is fully incorporated in this specification by reference. [0003] The present invention relates to a method for analyzing copolycarbonates. Background technique [0004] Polycarbonate resins are prepared by polycondensation of aromatic diols such as bisphenol A and carbonate precursors such as phosgene, and have excellent impact strength, dimensional stability, heat resistance, transparency, and the like. Therefore, polycarbonate resins have wide-ranging applications such as exterior materials for electrical and electronic products, automobile parts, building materials, optical elements, and the like. [0005] Recently, in order to apply these polycarbonate resins to a wider range of fields, man...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N24/08G01N30/06G01N30/88C08J11/24C08L69/00
CPCG01N24/087G01N30/88G01N30/06C08J11/24C08J2369/00B01D15/34G01N24/08G01N2030/884G01N2030/067G01N2030/885
Inventor 金涍容柳进淑吴仙玉吴诚濬
Owner LG CHEM LTD
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