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A complex β nucleating agent and its preparation method and application

A beta nucleating agent and technology of nucleating agent, applied in the field of complex beta nucleating agent and its preparation, can solve the problems of different processing conditions, different shapes, poor dimensional stability of products, etc.

Active Publication Date: 2020-10-27
山西科灜科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the presence of amide groups in the molecule of aromatic diamide β-nucleating agents, hydrogen bonds will be generated between molecules. During the processing, due to the different properties of polypropylene resins and different processing conditions, the molecules of aromatic diamide β-nucleating agents Different degrees of destruction of inter-hydrogen bonds, different dispersion degrees and different shapes of nucleating agents in polypropylene resin processing, resulting in poor stability of β-crystal induction efficiency
[0006] At the same time, due to the poor compatibility between the aromatic diamide β nucleating agent and polypropylene resin, the aromatic diamide β nucleating agent will be oriented in the flow method of polypropylene resin during processing, resulting in poor dimensional stability of the product

Method used

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  • A complex β nucleating agent and its preparation method and application
  • A complex β nucleating agent and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A preparation method of complex type beta nucleating agent has the following steps:

[0028] Step 1: Add 74.0kg lanthanum laurate, 165.0kg N, N'-dicyclohexyl terephthalamide and 240kg cyclohexane into the reactor, stir at room temperature for 0.5 hours; heat the reactor to 80°C for reaction temperature and continued to react for 2 hours;

[0029] In step 2, the product in step 1 is distilled off under reduced pressure to remove the solvent cyclohexane to obtain a white powder complex type β-nucleating agent.

[0030] The obtained complex type β nucleating agent is carried out infrared analysis, and analysis result is: ν N-H (3317cm -1 ),δ N-H (1543cm -1 ).

Embodiment 2

[0032] A preparation method of complex type beta nucleating agent has the following steps:

[0033] Step 1: Add 81.4kg lanthanum myristate, 132.0kg N, N'-dicyclohexyl terephthalamide and 256kg benzene into the reactor, stir at room temperature for 0.6 hours; heat the reactor to 80°C for reaction temperature and continued to react for 2.5 hours;

[0034] In step two, the product in step one is distilled off under reduced pressure to remove the solvent benzene to obtain a white powdery complex type β-nucleating agent.

[0035] The obtained complex type β nucleating agent is carried out infrared analysis, and analysis result is: ν N-H (3317cm -1 ),δ N-H (1545cm -1 ).

Embodiment 3

[0037] A preparation method of complex type beta nucleating agent has the following steps:

[0038] Step 1, add 100kg lanthanum stearate, 100kgN, N'-dicyclohexyl terephthalamide and 300kg toluene into the reactor, stir at room temperature for 1.0 hour; heat the reactor to 110°C as the reaction temperature and continue Reaction for 3 hours;

[0039] In step 2, the product in step 1 is distilled off under reduced pressure to remove the solvent toluene to obtain a white powdery complex type β-nucleating agent.

[0040] The obtained complex type β nucleating agent is carried out infrared analysis, and analysis result is: ν N-H (3318cm -1 ),δ N-H (1548cm -1 ).

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Abstract

The invention discloses a complex type beta nucleating agent as well as a preparation method and application thereof. The nucleating agent is generated by complexing long carbon chain fatty acid lanthanum salt with a para-aromatic diamide beta nucleating agent and has the following structure shown as a formula (I) (shown in the description); in the formula (I), x is greater than or equal to 10, yis equal to 3, z is equal to 3, m is greater than or equal to 0.2, n is smaller than or equal to 1, M is rare earth metal lanthanum, and R is cyclohexyl. The invention also discloses the preparation method of the complex type beta nucleating agent. The preparation method comprises the following steps: mixing the long carbon chain fatty acid lanthanum salt, the para-aromatic diamide beta nucleatingagent and a solvent and carrying out heating reaction; then carrying out vacuum distillation to remove the solvent, thus obtaining the complex type beta nucleating agent. The complex type beta nucleating agent prepared by the preparation method disclosed by the invention is mainly applied to polypropylene resin and has the advantages of stable structure, low sensitivity to processing conditions and good beta crystal inducing efficiency stability when being used in the polypropylene resin. Meanwhile, the complex type beta nucleating agent prepared by the invention has good compatibility with the polypropylene resin, and dimensional stability of the product is improved.

Description

Technical field [0001] The present invention relates to the technical field of beta nucleating agents, specifically a complex beta nucleating agent and its preparation method and application. Background technique [0002] Polypropylene resin is low in price and has excellent performance. Among the five general synthetic resins, it has rapid growth, great development potential, and wide application. Due to its own structural characteristics, the shortcomings of polypropylene resin are also obvious. For example, the side methyl groups on the molecular links reduce the chain flexibility, and the large spherulite particles make it have a high embrittlement temperature, poor impact resistance, high temperature rigidity and Insufficient transparency; poor dyeability, adhesion, electrical resistance, hydrophilicity and compatibility with polar polymers and inorganic fillers; large processing shrinkage, poor creep resistance, and poor dimensional stability of the product , prone to...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08K5/098C08K5/20C08L23/12
CPCC08K5/098C08K5/20C08L23/12C08L2205/242
Inventor 王克智毛晨曦张建军王凯李向阳李训刚张鸿宇苏丽丽刘凤玉巩翼龙李少阳张惠芳代燕琴杨树竹唐钰王晶王晨陆朝阳
Owner 山西科灜科技有限公司