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Polycarbonate resin composition

A technology of polycarbonate resin and resin composition, applied in the field of resin composition containing polycarbonate resin, capable of solving problems such as insufficient heat resistance

Active Publication Date: 2012-09-05
TEIJIN LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the obtained polycarbonate resin had a glass transition temperature of 144°C and was insufficient in heat resistance.

Method used

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  • Polycarbonate resin composition
  • Polycarbonate resin composition
  • Polycarbonate resin composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0167] The following examples are given to further illustrate the present invention. However, the present invention is not limited to these Examples. Wherein, the parts in the examples are parts by weight, and % is % by weight. In addition, the following methods were used for evaluation.

[0168] (1) specific viscosity (η SP )

[0169] The pellets were dissolved in methylene chloride to a concentration of 0.7 g / dL, and measured using an Ostwald viscometer (device name: RIGO AUTO VISCOSIMETER TYPE VMR-0525·PC) at a temperature of 20°C. Among them, specific viscosity η SP It can be calculated|required from the following formula.

[0170] n sp =t / t o -1

[0171] t: flow time of the sample solution

[0172] t o : only the flow time of the solvent

[0173] (2) Content rate of biological origin substances

[0174] According to ASTM D686605, the biogenic substance content rate was measured by the biogenic substance content rate test using the radiocarbon concentration (pe...

reference example 1

[0200] Reference example 1 (production of polycarbonate resin)

[0201] 7307 parts by weight of isosorbide (50 moles) and 10709 parts by weight of diphenyl carbonate (50 moles) are put into the reactor, and 4.8 parts by weight of tetramethylammonium hydroxide are put into (with respect to 1 mole of diphenyl carbonate The composition is 1×10 -4 mol) and sodium hydroxide 5.0×10 -3 Parts by weight (relative to 1 mole of diphenyl carbonate component is 0.25 × 10 -6 mol) as a polymerization catalyst was heated to 180° C. under normal pressure in a nitrogen atmosphere to melt.

[0202] Slowly reduce the pressure in the reaction tank under stirring for 30 minutes, and distill off the generated phenol while reducing the pressure to 13.3×10 -3 MPa. After allowing it to react for 20 minutes in this state, the temperature was raised to 200° C., and then the pressure was reduced slowly over 20 minutes, while the phenol was distilled off, and at 4.00×10 -3 MPa was allowed to react for...

reference example 2

[0204] Reference example 2 (production of polycarbonate resin)

[0205] 7307 parts by weight of isosorbide (50 moles), 10923 parts by weight of diphenyl carbonate (51 moles) and 270 parts by weight of stearyl alcohol (1.0 moles) are put into the reactor, and tetramethylammonium hydroxide 4.7 Parts by weight (relative to 1 mole of diphenyl carbonate component is 1×10 -4 mol) and sodium hydroxide 4.0×10 -3 Parts by weight (relative to 1 mole of diphenyl carbonate component is 0.20×10 -6 mol) as a polymerization catalyst was heated to 180° C. under normal pressure in a nitrogen atmosphere to melt.

[0206] Slowly reduce the pressure in the reaction tank under stirring for 30 minutes, and distill off the generated phenol while reducing the pressure to 13.3×10 -3 MPa. After allowing it to react for 20 minutes in this state, the temperature was raised to 200° C., and then the pressure was reduced slowly over 20 minutes, while the phenol was distilled off, and at 4.00×10 -3 MPa ...

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Abstract

An object of the present invention is to provide a polycarbonate resin composition which has a high content of biogenic matter and is excellent in heat resistance, heat stability, moldability, hue and transparency. The present invention related to a resin composition comprising 0.0005 to 0.5 part by weight of at least one heat stabilizer (component S) selected from the group consisting of phosphorus-based heat stabilizers (PS) and hindered phenol-based heat stabilizers (HS) based on 100 parts by weight of a polycarbonate resin (component A) which contains a recurring unit represented by the following formula (1) as the main constituent, and a molded article thereof.

Description

technical field [0001] The present invention relates to resin compositions containing polycarbonate resins. More specifically, it relates to a resin composition containing a polycarbonate resin made of a biologically derived substance and having excellent heat resistance, thermal stability, moldability, transparency, and color tone. Background technique [0002] Polycarbonate resin is a polymer formed by linking aromatic or aliphatic dihydroxy compounds through carbonate, among which polycarbonate resin obtained from 2,2-bis(4-hydroxyphenyl)propane (commonly known as bisphenol A) (hereinafter sometimes referred to as "PC-A") is excellent in transparency, heat resistance, and mechanical properties such as impact resistance, so it can be used in many fields. [0003] Polycarbonate resins are generally produced using raw materials obtained from petroleum resources, but due to concerns about the depletion of petroleum resources, the practical use of polycarbonate resins using b...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L69/00C08K5/101C08G64/30C08K5/51
CPCC08K5/51C08K5/10C08G64/0208
Inventor 三宅利往木下真美斋藤瑞穗弘中克彦北薗英一小田显通
Owner TEIJIN LTD