Resin composition containing polyalkylene carbonate

A technology of polyalkylene carbonate and resin composition, applied in the field of resin composition containing polyalkylene carbonate, polylactide and polyalkylacrylate, can solve the problem of reducing processability and product storage problems such as non-resistance, limited application, plate fusion-adhesion degree, etc., to achieve the effect of excellent physical and mechanical properties

Active Publication Date: 2015-11-11
LG CHEM LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this mixture has a problem in that it is difficult to realize the difference between polylactide and aromatic polycarbonate because of a large difference in melt viscosity between polylactide and polyaryl carbonate only when they are simply melted and mixed. homogeneous compatibility
For example, there is a problem that molten resin is discharged from the nozzle of the mixing extruder when regularly vibrated, and thus it is difficult to pelletize the molten resin stably
In addition, the problem with this mixture is that since it has a non-pearl luster, when it is mixed with a colorant and then colored, it becomes blurred and it is difficult to show the color, thus limiting its application
[0009] Meanwhile, when an aromatic polycarbonate sheet is processed into an inflatable product, there is a problem that the degree of fusion-adhesion between the sheets becomes severe, thereby greatly reducing workability and product storability sex
When the sheets are prepared by adding polylactide to polyethylene carbonate, the problem of fusion-adhesion between the sheets can be somewhat overcome, but deterioration of transparency occurs

Method used

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  • Resin composition containing polyalkylene carbonate
  • Resin composition containing polyalkylene carbonate
  • Resin composition containing polyalkylene carbonate

Examples

Experimental program
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Effect test

preparation Embodiment 1

[0065] Polyethylene carbonate resins were prepared by copolymerizing ethylene oxide and carbon dioxide using a diethyl-zinc catalyst by the following method (Journal of Polymer Science B1969, 7, 287; Journal of Controlled release 1997, 49, 263).

[0066] 1 g of dry diethyl-zinc catalyst and 10 mL of dioxane solvent were charged into an autoclave reactor equipped with a stirrer, and then 0.1 g of purified water was added to the solution while stirring the solution. Next, carbon dioxide was passed into the reactor to a pressure of about 10 atm, and then the solution was stirred at 120° C. for 1 hour. Afterwards, 10 g of purified ethylene oxide was added, carbon dioxide was introduced again to a pressure of about 50 atm, and then the temperature was adjusted to 60° C. to carry out the reaction. After the reaction, unreacted ethylene oxide was removed under low pressure, and the reaction product was dissolved in dichloromethane solvent. Then, the dissolved reaction product was wa...

Embodiment 1

[0069] 94 g of polyethylene carbonate prepared in Preparation Example 1, 5 g of polylactide (PLA, weight average molecular weight: 230,000, manufactured by NatureWorks Corporation) and 1 g of polymethyl methacrylate (PMMA, weight average molecular weight: 86,000, manufactured by LGMMA Corporation) were mixed to prepare a resin composition.

[0070]Polyethylene carbonate was dried overnight in a vacuum oven at 40°C before use, and polylactide and polymethyl methacrylate were dried in a vacuum oven at 70°C for 4 hours before use .

[0071] The resin composition was formed into pellets using a twin-screw extruder (BA-19, manufactured by BAUTECH Corporation). The particles were dried overnight in a vacuum oven at 40° C. to prepare a dogbone-shaped sample. Then, the mechanical properties of the dogbone-shaped samples were measured using a universal testing machine (UTM).

Embodiment 2 to 6

[0073] A resin composition was prepared in the same manner as in Example 1 except that the contents of polyethylene carbonate, polylactide, and polymethylmethacrylate were changed.

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Abstract

The present invention relates to a resin composition comprising polyalkylene carbonate, polylactide and polyalkyl(meth)acrylate, and exhibiting greatly improved degree of transparency while having excellent biodegradable properties, mechanical properties and thermal properties. The resin composition of the present invention can be used in various fields such as various films, sheets, disposable products, electronic products and automotive interior parts.

Description

technical field [0001] The present invention relates to a kind of resin composition comprising polyalkylene carbonate, more specifically, relate to a kind of resin composition comprising polyalkylene carbonate, polylactide and polyalkylene (meth)acrylate, It exhibits excellent biodegradability, mechanical properties and transparency. [0002] This application claims the benefit of Korean Patent Application No. 10-2013-0033104 filed on March 27, 2013 and Korean Patent Application No. 10-2014-0035718 filed on March 27, 2014, Its entire content is incorporated into this application by reference. Background technique [0003] Unlike engineering plastic aromatic carbonate, amorphous transparent resin polyalkylene carbonate has the advantage that it exhibits biodegradability, it can be thermally decomposed at low temperature, and it is completely decomposed into carbon dioxide and water, Thus no further carbon residues remain. [0004] Meanwhile, polyalkylene carbonate has exce...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L69/00C08L67/04C08L33/04C08J5/00
CPCC08J5/18C08L33/12B32B7/04B32B27/08B32B27/20B32B27/22B32B27/28B32B27/308B32B27/36B32B27/365B32B2250/02B32B2250/24B32B2264/102B32B2264/104B32B2264/108B32B2270/00B32B2307/40B32B2307/412B32B2307/54B32B2307/7163B32B2307/748B32B2553/00B32B2605/003C08L69/00C08J2369/00C08J2433/12C08J2467/04C08L33/06C08L67/04C08L2203/16C08L2205/03
Inventor 赵贤朱徐真花朴胜莹
Owner LG CHEM LTD
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