Glycol modified petg polyester chip and its production process

A polyester chip and diol technology is applied in the field of diol modified PETG polyester chips and its production process, which can solve the problems of product color difference, high production cost, poor PETG polyester toughness, etc., and achieves easy access to raw materials. Obtain the effect of better product performance and better product performance

Active Publication Date: 2022-06-28
JIANGYIN HUAHONG CHEM FIBER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Using neopentyl glycol (NPG) instead of CHDM to modify and copolymerize PETG, the obtained neopentyl glycol modified PETG polyester has poor toughness and brittle products; in addition, it is common to use batch devices in the production process. There are the following problems: intermittent production in batches, high production cost; there are differences in each batch of materials, and there are differences in the head and tail materials in a batch of materials; the color of the product is poor, and it can only barely be used in the "shrink film" industry that does not require high hue. It cannot be used in industries and products that have high requirements for transparency and color, such as sheets, plates, bottles, etc.

Method used

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  • Glycol modified petg polyester chip and its production process
  • Glycol modified petg polyester chip and its production process
  • Glycol modified petg polyester chip and its production process

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0032] The specific embodiments provided by the present invention will be described in detail below with reference to the examples.

[0033] The terephthalic acid (PTA) used in the examples of the present invention was purchased from Jiangyin Hanbang Petrochemical Co., Ltd., neopentyl glycol (NPG) was purchased from Jihua BASF Co., Ltd., and diethylene glycol (DEG) was purchased from Saudi Petroleum Base Company , ethylene glycol (MEG) was purchased from Sabic Company, and catalyst ethylene glycol antimony was purchased from Liaoyang Synthetic Catalyst Co., Ltd.

[0034] The raw material ratios of Examples 1 and 2 and Comparative Examples 1 to 4 are shown in Table 1:

[0035] Table 1 Slurry preparation (compounded according to the following molar ratio)

[0036] Example 1 Example 2 Comparative Example 1 Comparative Example 2 Comparative Example 3 Comparative Example 4 PTA 1 1 1 1 1 1 MEG 0.6 0.8 0.6 0.8 1.2 1.5 NPG 0.5 0.2 0....

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Abstract

The invention discloses a glycol-modified PETG polyester chip, which is made of the following raw materials: the molar ratio of terephthalic acid, neopentyl glycol, diethylene glycol and ethylene glycol is 1: (0.1~ 0.5): (0.05~0.1): (0.6~0.8). The present invention uses terephthalic acid, neopentyl glycol, diethylene glycol, and ethylene glycol, which are relatively low in cost and readily available, as reaction raw materials, and are produced on a continuous polymerization device with stable quality and color transparency to meet the requirements of sheet and plate materials. 1. Glycol modified PETG polyester chips for bottles.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a diol-modified PETG polyester chip and a production process thereof. Background technique [0002] Plastic films such as printing, sleeve labels, and labels used for food packaging have been using toxic PVC heat shrinkable films. The annual consumption of PVC heat shrinkable films in China is more than 200,000 tons. Developed countries such as Europe, America, Japan and South Korea have banned PVC materials by legislation. . China is also gradually banning the use of toxic PVC products in the packaging of the food and beverage industries. [0003] The full name of PETG polyester is polyethylene terephthalate-1,4-cyclohexane dimethanol ester, which is a non-crystalline polyester with toughness, weather resistance, chemical resistance, environmental protection, economic characteristics. PETG is the best product to replace PVC with its good transparency, printing perfo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G63/672C08G63/78
CPCC08G63/672C08G63/78
Inventor 马德义王祖宏胡士清杜永峰胡耀那海锋夏佳
Owner JIANGYIN HUAHONG CHEM FIBER
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