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PBAT resin composition and preparation method and application thereof

A resin composition and resin technology, applied in the field of polymer materials, can solve problems such as redness or purpleness, yellowish product color, unstable appearance color, etc., and achieve good mechanical properties and mechanical properties, excellent mechanical strength and toughness , the effect of improving the appearance and mechanical properties

Pending Publication Date: 2022-02-08
WANHUA CHEM GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Generally speaking, the current PBAT generally has the problem of poor stability between batches of products, especially the unstable appearance and color. The commonly used titanium-based catalysts will lead to low gloss and yellow color of the product; moreover, during the preparation process It is also accompanied by inevitable side reactions, resulting in yellow, red or purple color of the product, which greatly affects the range of downstream applications of the product

Method used

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  • PBAT resin composition and preparation method and application thereof
  • PBAT resin composition and preparation method and application thereof
  • PBAT resin composition and preparation method and application thereof

Examples

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Effect test

Embodiment 1

[0149] A kind of PBAT resin composition, comprises PBAT resin and cyclopentylidene conjugated structure compound (2-cyclopentylene cyclopentanone and 2,5-dicyclopentylene cyclopentanone); Preparation method is as follows:

[0150] Weigh 1,000g of terephthalic acid, 1,000g of adipic acid, 1,700g of 1,4-butanediol, and 2.37g of tetra-n-butyl titanate into a 5L reaction kettle, start stirring, replace with nitrogen three times, and maintain normal pressure. Raise the temperature of the reaction system to 220°C, react for 90min, and the esterification rate is 96.2%; Nitrogen is filled into the reactor to return the reactor to normal pressure to obtain a PBAT melt, which is extruded under the protection of nitrogen, cooled to room temperature, and pelletized to obtain the PBAT resin composition.

Embodiment 2

[0152] A kind of PBAT resin composition, comprises PBAT resin and cyclopentylidene conjugated structure compound (2-cyclopentylene cyclopentanone and 2,5-dicyclopentylene cyclopentanone); Preparation method is as follows:

[0153] Weigh 990g of terephthalic acid, 1100g of adipic acid, 1750g of 1,4-butanediol, and 2.73g of tetra-n-butyl titanate into a 5L reactor, start stirring, replace with nitrogen three times, and maintain normal pressure. Raise the temperature of the reaction system to 215°C, react for 120min, and the esterification rate is 96.8%; Nitrogen is filled into the reactor to return the reactor to normal pressure to obtain a PBAT melt, which is extruded under the protection of nitrogen, cooled to room temperature, and pelletized to obtain the PBAT resin composition.

Embodiment 3

[0155] A kind of PBAT resin composition, comprises PBAT resin and cyclopentylidene conjugated structure compound (2-cyclopentylene cyclopentanone and 2,5-dicyclopentylene cyclopentanone); Preparation method is as follows:

[0156] Weigh 980g of terephthalic acid, 1250g of adipic acid, 1680g of 1,4-butanediol, and 2.68g of tetra-n-butyl titanate and add them into a 5L reaction kettle, start stirring, nitrogen replacement 3 times, and maintain normal pressure. Raise the temperature of the reaction system to 210°C, react for 130min, and the esterification rate is 97.1%; Nitrogen is filled into the reactor to return the reactor to normal pressure to obtain a PBAT melt, which is extruded under the protection of nitrogen, cooled to room temperature, and pelletized to obtain the PBAT resin composition.

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Abstract

The invention provides a PBAT resin composition and a preparation method and application thereof. The PBAT resin composition comprises PBAT resin and a cyclopentadiene conjugated structure compound. The mass content of the cyclopentadiene conjugated structure compound in the PBAT resin composition is 0.05 ppm to 100 ppm. The PBAT resin composition has the advantages of high molecular weight, good mechanical properties, low color value, excellent color stability and excellent hue, can fully meet the requirements of film blowing and other processing molding, and has low haze and is clearer and more transparent after film blowing, and the appearance and mechanical properties of the product are comprehensively improved. A resin composition containing the PBAT resin composition has good mechanical properties, and can fully meet the application requirements of various film bag products.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to a PBAT resin composition and a preparation method and application thereof. Background technique [0002] Polybutylene adipate-terephthalate (PBAT resin) is a copolymer of butylene adipate and butylene terephthalate, which has both polybutylene adipate (PBA ) and polybutylene terephthalate (PBT), both good ductility and elongation at break, and good heat resistance and impact properties; in addition, it also has excellent biodegradability It is expected to become a substitute material for traditional plastics such as polyethylene, polypropylene and polyvinyl chloride, and has a very good application prospect. [0003] PBAT resin has a high melting point and good processability. It can be processed by blown film, injection molding, blow molding and other molding methods. It has high application in many fields such as packaging materials, biomedical materials,...

Claims

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Application Information

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IPC IPC(8): C08G63/183C08G63/16C08G63/78C08L67/02C08K5/07
CPCC08G63/183C08G63/16C08G63/78C08K5/07C08L67/02
Inventor 胡江林高梦云陈建旭刘岩韦云涛姜庆梅王雨龙方文娟王喜蒙王磊黎源
Owner WANHUA CHEM GRP CO LTD
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