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Bio-based biodegradable tri-block and multi-block copolymer with dimer acid polyester chain segment, preparation method of copolymer and application of copolymer

A technology of multi-block copolymer and dimer acid polyester, which is applied in the field of bio-based biodegradable tri-block, multi-block copolymer and its preparation, can solve the problem of inability to solve the problem of oil/coal substitution, and achieve good Tensile strength, reduced effect of use

Inactive Publication Date: 2017-12-29
王肖桦
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Among biodegradable material products, biodegradable film flexible packaging products (such as supermarket shopping bags, rolling bags, compostable garbage bags, biodegradable agricultural mulch films, various packaging films, etc.) are the most widely used and the largest consumption. The impact on the environment after being discarded is also the greatest, but PBAT and PPC suitable for the preparation of biodegradable film flexible packaging products are all from petroleum / coal resources. Using PBAT, PPC, etc. to replace the existing polyethylene film can achieve the function of reducing environmental pollution , but it cannot solve the problem of oil / coal substitution

Method used

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  • Bio-based biodegradable tri-block and multi-block copolymer with dimer acid polyester chain segment, preparation method of copolymer and application of copolymer
  • Bio-based biodegradable tri-block and multi-block copolymer with dimer acid polyester chain segment, preparation method of copolymer and application of copolymer
  • Bio-based biodegradable tri-block and multi-block copolymer with dimer acid polyester chain segment, preparation method of copolymer and application of copolymer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] Step 1: Weigh 0.415 kg of bio-based 2,5-furandicarboxylic acid, 6.0 kg of dimer acid, 3.0 kg of petroleum-based 1,6-hexanediol, 20 grams of malic acid, and 10 grams of tetrabutyl titanate, and add them to In the esterification reaction kettle, the temperature is raised to 200-250° C. in a temperature-programmed manner, and the reaction is stirred for 2-5 hours until the esterification rate reaches more than 97%, and the esterified product (1) is obtained.

[0053] Transfer the esterified product (1) to a polycondensation kettle with a decompression device, evacuate to an absolute pressure of 3-5Kpa while stirring, and raise the temperature to 200-250°C at the same time, stir and react for 1-2 hours, and further reduce the pressure to an absolute pressure 100-200Pa, continue to react for 1-3 hours. The end point of the reaction was judged according to the change of the stirring current. Dimer acid polyester (1) is obtained.

[0054] Step 2: Transfer the dimer acid poly...

Embodiment 2

[0059] The PLA-dimer acid polyester (1)-PLA triblock copolymer (1) prepared in Example 1 is mixed with polybutylene terephthalate adipate in a ratio of 5:5, while adding 2% MDI based on the weight of the polymer, mix evenly, raise the temperature of the internal mixer to 150-200°C in advance, add it to the internal mixer and knead for 30 minutes to obtain PLA-dimer acid polyester (1)-PLA-PBAT Block Copolymer (2).

[0060] The mechanical properties and bio-based content of the obtained multi-block copolymer of table 2 embodiment 2

[0061]

Embodiment 3

[0063] Step 1: Weigh 1.125 kg of bio-based succinic acid, 5.35 kg of dimer acid, 3.5 kg of petroleum-based 1,4-butanediol, 15 grams of bio-based glycerin, and 10 grams of tetraisopropyl titanate, and add them to the esterification In the reaction kettle, the temperature is raised to 160-200°C in a temperature-programmed manner, and the reaction is stirred for 2-5 hours until the esterification rate reaches more than 97%, and the esterified product (2) is obtained.

[0064] Transfer the esterified product (2) to a polycondensation kettle with a decompression device, vacuumize it to an absolute pressure of 3-5Kpa while stirring, and raise the temperature to 200-250°C at the same time, stir and react for 1-2 hours, and further reduce the pressure to an absolute pressure 100-200Pa, continue to react for 1-3 hours. The end point of the reaction was judged according to the change of the stirring current. The dimer acid-containing polyester segment B(2) is obtained.

[0065]Step 2:...

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Abstract

The invention discloses bio-based biodegradable tri-block and multi-block copolymer with a dimer acid polyester chain segment, a preparation method of the copolymer and an application of the copolymer. The tri-block copolymer is of an A-B-A type, a chain segment B is polyester containing dimer acid, a chain segment A is a homopolymer or copolymer, one or more cyclic monomers E are polymerized in a ring opening manner to obtain the homopolymer or copolymer, and the tri-block copolymer, an optional polymer D and a chain extender react to form A-B-A-type multi-block copolymer and / or A-B-A-D-type multi-block copolymer. The tri-block and multi-block copolymer has high biological carbon content, good biodegradability and family composting performance and excellent mechanical performance and machining performance, belongs to environmental-friendly materials and can be widely used for fields such as packaging, agriculture, biological medicines and medical treatment.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to a bio-based biodegradable tri-block and multi-block copolymer containing a dimer acid polyester chain segment and a preparation method and application thereof. Background technique [0002] As a substitute for traditional non-renewable petroleum / coal-based polymers, bio-based polymers are receiving more and more attention as petroleum / coal resources are becoming increasingly scarce. On the other hand, with the widespread use of plastic products, the environmental problems caused by the waste of traditional plastic products, especially film plastic products, are becoming more and more serious, and more and more attention has been paid to environmentally friendly materials with biodegradable properties. Bio-based biodegradable materials have both bio-based and biodegradable properties, and at the same time solve the problems of resource substitution and enviro...

Claims

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Application Information

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IPC IPC(8): C08G63/685C08L67/04C08L3/02C08K3/26C08L67/02C08L1/02C08K3/34
CPCC08G63/6858C08K2003/265C08L67/04C08L2205/02C08L2205/03C08L3/02C08K3/26C08L67/02C08L1/02C08K3/34
Inventor 王肖桦
Owner 王肖桦
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