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Polyester/polycarbonate blend with good thermal and color stability

一种聚碳酸酯、混合物的技术，应用在聚酯/聚碳酸酯混合物领域，能够解决物理特性互补等问题，达到耐热性良好的效果

Active Publication Date: 2016-01-13
SK CHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition to the problem of heat resistance improvement, there is a limit to the complementarity of physical properties

Method used

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  • Polyester/polycarbonate blend with good thermal and color stability

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～6

[0026] Examples 1-6: Preparation and detection of polyester / polycarbonate mixtures

[0027] As the data shown in Table 1, PC (LG-DDW, MI: 30) was dried in a dryer at 120°C for 5 hours, and the P(ET-CT) prepared in the examples was dried in a dryer, Dry at 80°C for 5 hours, dry PET (polyethylene terephthalate) (brand name: SKYPET, SK Chemical Co., Ltd.) in a dryer at 70°C for 80 hours, and then add the three Into the dried reactor and stir for 3 minutes until well mixed. The polyester / polycarbonate mixture was injected into 3.0mm thick samples using a cold runner (water cooled) mold capable of producing 3.0mm thick / 40mm×40mm sized samples and 3mm thick / 12mm×120mm sized samples. In the injection molding machine, the L / D (length / diameter) of the screw is 23, and the compression ratio is 3. The color grade of the sample was detected with a color grade measuring instrument (NipponDenshoku, 300A), and the heat distortion temperature (HDT) was measured with a heat deformation measu...

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Abstract

The invention discloses a polyester / polycarbonate mixture with good heat stability and color stability. The polyester / polycarbonate blend includes: (a) P(ET-CT) (poly(ethylene terephthalate-1,4-cyclohexanedimethanol)), the P(ET-CT) CT) is copolymerized with 1,4-cyclohexanedimethanol (CHDM) with a molar percentage of 40-90% relative to the total diol component; (b) polyethylene terephthalate (PET); ( c) polycarbonate (PC); (d) germanium of 1 to 100 ppm (weight ratio) relative to the total polyester / polycarbonate mixture; relative to the total polyester / polycarbonate mixture, the P(ET-CT ) and the total weight percentage of PET is 50-90%, the weight percentage of the PET is 1-6 times of the weight percentage of the P(ET-CT), the weight percentage of the PC The content is 10-50%.

Description

technical field [0001] The invention relates to a polyester / polycarbonate mixture, in particular to a polyester / polycarbonate mixture with good heat stability and color stability. Background technique [0002] Due to the higher mechanical strength, heat resistance, transparency and gas barrier properties of polyester resins, polyester resins are suitable for making packaging films for beverages such as juice, soft drinks or carbonated soft drink packaging containers or as materials for audio / video tapes, so are heavily used. Polyester sheets or board walls have good transparency and excellent mechanical strength, so they are widely used as materials for boxes, boxes, hoardings, store shelves, protective panels, blister packaging, as well as building materials, interior materials and decorations materials and more. Recently, polyester resin has found new uses. Polyester resin is injected into thick plastic sheets, and the resulting sheets can be used to make interior decora...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L67/03C08L69/00C08K3/08C08J5/00
CPCC08K3/08C08L67/02C08L69/00C08L2205/02C08G63/183C08G63/189C08G63/199C08G63/78C08G63/863C08L67/03C08G2261/612
Inventor 黄东浚黄晸竣林在凤金泰荣裵成洙
Owner SK CHEM CO LTD