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Colored polylactic acid particle and preparation method thereof

A technology for coloring polylactic acid and polylactic acid, which is applied in the field of colored polylactic acid particles and its preparation, and the coloring of polylactic acid, can solve the problems of limited application range, increased cost of raw materials, and increased investment costs of polylactic acid downstream application production enterprises. The effect of wide application range and reduction of raw material cost

Pending Publication Date: 2020-03-27
安徽丰原福泰来聚乳酸有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the polylactic acid coloring method disclosed above can be made into polylactic acid products of various colors, the finished products are all colored fiber products, and the scope of application is greatly limited.
In addition, the above-mentioned polylactic acid colored fiber products all use colorless polylactic acid solids such as slices as raw materials, and then add a color-matching link to the polylactic acid product production line to make colored polylactic acid products, which increases the downstream application of polylactic acid. The investment cost of the production enterprise, and the need to purchase colorless polylactic acid particles and masterbatches of various colors during the production process, the cost of raw materials will also increase

Method used

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  • Colored polylactic acid particle and preparation method thereof
  • Colored polylactic acid particle and preparation method thereof
  • Colored polylactic acid particle and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] This embodiment adopts figure 1 The production device for colored polylactic acid particles shown produces colored polylactic acid particle products. details as follows.

[0027] The polylactic acid polymerization device 1 is polymerized to generate a colorless polylactic acid material in a molten state. The relative molecular weight of the colorless polylactic acid material is 170,000 g / mol.

[0028] Take the polylactic acid-based color masterbatch, the selection of the polylactic acid-based color masterbatch is determined according to the needs of downstream manufacturers, and what is selected in this embodiment is the polylactic acid-based sky blue masterbatch produced by Changzhou Baohong Color Masterbatch Co., Ltd., wherein The pigment content is 10%. The color masterbatch is put into the screw extruder 4, and heated to melt to obtain colored polylactic acid in molten state, that is, colored polylactic acid melt.

[0029] The colorless polylactic acid material ...

Embodiment 2

[0042] This embodiment adopts figure 1 The production device for colored polylactic acid particles shown produces colored polylactic acid particle products. details as follows.

[0043] The polylactic acid polymerization device 1 is polymerized to generate a colorless polylactic acid material in a molten state. The relative molecular weight of the colorless polylactic acid material is 150,000 g / mol.

[0044] Get the polylactic acid-based color masterbatch, the selection of the polylactic acid-based color masterbatch is determined according to the needs of downstream manufacturers. In this embodiment, the polylactic acid-based light yellow masterbatch produced by Changzhou Baohong Color Masterbatch Co., Ltd. is selected, wherein The pigment content is 20%. The color masterbatch is put into the screw extruder 4, and heated to melt to obtain colored polylactic acid in molten state, that is, colored polylactic acid melt.

[0045] The colorless polylactic acid material that is ...

Embodiment 3

[0058] This embodiment adopts figure 1 The production device for colored polylactic acid particles shown produces colored polylactic acid particle products. details as follows.

[0059] The polylactic acid polymerization device 1 is polymerized to generate a colorless polylactic acid material in a molten state. The relative molecular weight of the colorless polylactic acid material is 180,000 g / mol.

[0060] Get the polylactic acid-based color masterbatch, the selection of the polylactic acid-based color masterbatch is determined according to the needs of downstream manufacturers, and what is selected in this embodiment is the polylactic acid-based carbon black masterbatch produced by Changzhou Baohong Color Masterbatch Co., Ltd., wherein The pigment content is 10%. The color masterbatch is put into the screw extruder 4, and heated to melt to obtain colored polylactic acid in molten state, that is, colored polylactic acid melt.

[0061] The colorless polylactic acid materi...

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Abstract

The invention belongs to the technical field of polylactic acid production, and specifically discloses a colored polylactic acid particle and a preparation method thereof. The provided colored polylactic acid particle is composed of polylactic acid and pigments. The colored polylactic acid particle is prepared by directly mixing a polymerized molten colorless polylactic acid material with coloredpolylactic acid prepared from polylactic acid based color master batch to prepare colored polylactic acid mixed melt, cutting the mixed melt in water, and drying. The colored polylactic acid particlecan be used in more application fields and can be made into colored fibers, colored plastic products, colored films, and the like. For the polylactic acid downstream application production enterprises, the colored polylactic acid particle can be directly used for production, the step of coloring colorless polylactic acid can be eliminated, and thus the equipment investment and raw material cost are both prominently reduced.

Description

technical field [0001] The invention relates to the technical field of polylactic acid production, in particular to the coloring of polylactic acid, in particular to colored polylactic acid particles and a preparation method thereof. Background technique [0002] Polylactic acid (PLA) is a type of biopolymer material made from cassava, sorghum, corn, straw and other crops through fermentation, purification, polymerization and other production processes. Its production energy consumption is lower than that of petroleum products. High-quality synthetic polymers consume 30% to 50% less energy. Under normal temperature and humidity conditions, the physical properties of polylactic acid and its products are stable. The waste of polylactic acid can be degraded into carbon dioxide and water by microorganisms in soil or seawater, and then can enter the natural cycle indefinitely through plant photosynthesis. Therefore, polylactic acid is an ideal green polymer material. Polylacti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J3/20C08L67/04
CPCC08J3/20C08J2367/04
Inventor 李远马丁·范·冈斯伯格张宏才徐业生邵志强
Owner 安徽丰原福泰来聚乳酸有限公司
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