Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Polycarbonate resin composition, method for producing same, and molded object

A technology of polycarbonate resin and manufacturing method, applied in the field of polycarbonate resin composition, can solve the problems of unfavorable environment, high melt viscosity, no increase in polymerization degree, etc., and achieve the effect of excellent transparency

Active Publication Date: 2018-03-27
MITSUBISHI CHEM CORP
View PDF14 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Furthermore, Patent Document 7 discloses a polycarbonate copolymer comprising a structural unit derived from ISB, a structural unit derived from an aliphatic dihydroxy compound, and a structural unit derived from an aromatic bisphenol compound, for Although this polycarbonate copolymer is excellent in heat resistance, moldability, and mechanical strength, it may not increase to a sufficient degree of polymerization and lack impact resistance due to the inclusion of structural units derived from bisphenol compounds. polymer
In addition, the polymer has a low content of biologically derived substances, which is also not preferable from an environmental point of view
[0006] A polycarbonate resin composed of a dihydroxy compound such as isosorbide (ISB), which is a dihydroxy compound obtained from biomass resources, has a high glass transition temperature and excellent heat resistance, but it is rigid and suffers from melt polymerization. The melt viscosity is high, and high molecular weight polymers cannot be obtained, so it has the disadvantage of lacking impact resistance

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Polycarbonate resin composition, method for producing same, and molded object
  • Polycarbonate resin composition, method for producing same, and molded object
  • Polycarbonate resin composition, method for producing same, and molded object

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0248] Hereinafter, the present invention will be described in more detail by way of examples, but the present invention is not limited to the following examples unless the gist is exceeded.

manufacture example 1-1

[0292] The polycarbonate resin was polymerized using a continuous polymerization apparatus consisting of three vertical stirring reactors and one horizontal stirring reactor and a twin-screw extruder. Specifically, firstly, ISB, CHDM and DPC are melted in a tank respectively, and ISB is 35.2 kg / hr, CHDM is 14.9 kg / hr, and DPC is 74.5 kg / hr (by molar ratio, ISB / CHDM / DPC= 0.700 / 0.300 / 1.010) was continuously supplied to the first vertical stirring reactor. Simultaneously, an aqueous solution of calcium acetate monohydrate was supplied to the first vertical stirring reactor so that the amount of calcium acetate monohydrate added as a catalyst was 1.5 μmol relative to 1 mol of the total dihydroxy compound. The reaction temperature, internal pressure, and residence time of each reactor were set as the first vertical stirred reactor: 190°C, 25kPa, 90 minutes, the second vertical stirred reactor: 195°C, 10kPa, 45 minutes, and the third vertical stirred reactor. Type stirred reactor: ...

manufacture example 1-2

[0297] Regarding the supply amount of each raw material to the reactor, ISB is 25.4 kg / hr, CHDM is 25.0 kg / hr, and DPC is 74.8 kg / hr (ISB / CHDM / DPC=0.500 / 0.500 / 1.006 in molar ratio), Calcium acetate monohydrate is 1.5 μ mol with respect to 1 mol of all dihydroxy compounds, and the reduced viscosity of the obtained polycarbonate resin is changed from 0.60 dL / g to 0.63 dL / g. 1 A resin was prepared in the same manner to obtain a polycarbonate resin having a molar ratio of ISB / CHDM of 50 / 50 mol%. 0.65 weight ppm of phosphorous acid (0.24 weight ppm in terms of phosphorus atoms) was added as a catalyst deactivator to the polycarbonate resin. In addition, phosphorous acid was added as follows. Prepare the masterbatch that coats and mixes the ethanol solution of phosphorous acid on the pellet of the polycarbonate resin obtained in Production Example 1-2, from the side of the first exhaust port of the extruder (the Resin supply port side) The masterbatch is supplied so that it may be...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
Melt viscosityaaaaaaaaaa
Melt viscosityaaaaaaaaaa
Login to View More

Abstract

The purpose of the present invention is to provide: a polycarbonate resin composition having excellent transparency and having a high biogenic substance content rate and high levels of heat resistance, humid heat resistance, and impact resistance in a well-balanced manner; a method for producing the same; and a molded object of the polycarbonate resin composition. The present invention pertains to: a polycarbonate resin composition comprising a polycarbonate resin (A) including a constitutional unit derived from a compound represented by formula (1), and an aromatic polycarbonate resin (B); amethod for producing the same; and a molded object of the resin composition.

Description

technical field [0001] The present invention relates to a polycarbonate resin composition excellent in transparency and well-balanced in biologically derived substance content, heat resistance, heat and humidity resistance, and impact resistance, a method for producing the same, and a molded article obtained by molding the resin composition . Background technique [0002] Conventional aromatic polycarbonate resins containing structures derived from bisphenol A and the like are manufactured using raw materials derived from petroleum resources. Polycarbonate resins are manufactured from raw materials obtained from biomass resources. In addition, due to the dangers of climate change due to the increase in carbon dioxide emissions and global warming caused by accumulation, there is also a demand for the development of carbon-neutral monomers derived from plants that can maintain carbon neutrality even if they are disposed of after use. Raw material polycarbonate resin. [000...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): C08L69/00C08G64/16C08G64/40C08K3/00C08K5/00
CPCC08L69/00C08G64/302C08G64/0208C08G64/40C08G64/16C08L2205/025C08L2201/08C08L2201/10C08K3/00C08K5/00C08K3/105C08K3/10C08K5/06C08K3/08C08K2003/0818
Inventor 田中智彦垣内麻美久野贵雄森久德
Owner MITSUBISHI CHEM CORP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com