Function polyamide monomer, function polyamide and preparation methods

A technology of polyamide monomer and polyamide, which is applied in the field of functional polyamide and its preparation, and functional polyamide monomer, which can solve the problems of poor mechanical properties of elastomers and unsatisfactory mechanical properties, and achieve the effect of excellent aggregated structure

Active Publication Date: 2017-12-22
ANHUI AGRICULTURAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, most of the elastomers prepared from these raw materials have poor mechanical properties. Even ...

Method used

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  • Function polyamide monomer, function polyamide and preparation methods
  • Function polyamide monomer, function polyamide and preparation methods
  • Function polyamide monomer, function polyamide and preparation methods

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-1

[0041] Embodiment 1-1 functional polyamide monomer 1 (R 1 For the preparation of -OH)

[0042] Take 100 g of methyl undecylenate and add 1 g of 1,3-diamino-propanol into 4 ml of tetrahydrofuran. After passing argon for half an hour, place it in a 40°C oil bath, add 10ml of sodium methoxide, the solution becomes clear, and react for 20 hours under the reaction conditions of 40°C. The specific reaction equation is as follows:

[0043]

[0044] Finally, after purification, a white powdery solid is obtained, and the white powdery solid is a functional polyamide monomer whose side group R1 is -OH, also called a hydroxyl amide monomer.

[0045] The 1H NMR spectrum of the functional polyamide monomer 1 prepared in this embodiment is as follows figure 1 As shown, the purity of the obtained functional polyamide monomer 1 is very high. From figure 1 Peak e at 3.38ppm and peak f at 3.8 can be seen that 1,3-diamino-propanol has been successfully integrated into the monomer, and the...

Embodiment 1-2

[0046] Embodiment 1-2 functional polyamide monomer 1 (R 1 For the preparation of -OH)

[0047]1 weight part of undecylenic acid methyl ester and 1 weight part of 1,3-diamino-propanol were added to 10 weight parts of tetrahydrofuran. After passing argon for half an hour, place it in an oil bath at 40°C, add 10 -4 After parts by weight of sodium methoxide, the solution becomes clear, reacted for 2 hours under the reaction condition of 40° C., and finally obtained a white powdery solid through recrystallization.

[0048] The 1H NMR spectrum of the functional polyamide monomer 1 prepared in this example also shows a high purity.

Embodiment 1-3

[0049] Embodiment 1-3 functional polyamide monomer 1 (R 1 For the preparation of -OH)

[0050] Take 1000 parts by weight of undecylenic acid methyl ester, and add 10 parts by weight of 1,3-diamino-propanol into 1000 parts by weight of tetrahydrofuran. After passing argon for half an hour, place it in an oil bath at 40°C, add 10 parts by weight of sodium methoxide, the solution becomes clear, react for 36 hours at 120°C, and finally obtain a white powdery solid through recrystallization.

[0051] The 1H NMR spectrum of the functional polyamide monomer 1 prepared in this example also shows a high purity.

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Abstract

The invention relates to a function polyamide monomer, polyamide and preparation methods. A structural formula of the function polyamide monomer is shown in the description, and a structural formula of a side group R1 is -OCOR1' or -OH. A structural formula of the function polyamide is shown in the description, the n is larger than or equal to 5 and smaller than or equal to 5000, and the R2 of a main chain is disulfide. The preparation method of the function polyamide comprises the steps: dissolving the function polyamide monomer, dithiol and a catalyst into a solvent; then introducing protection gas of argon and putting into an oil bath pan to react; finally, obtaining a function polyamide product through methyl alcohol precipitation. According to the invention, a synthetic vegetable oil derivative namely the function polyamide monomer is converted into function polyamide in high efficiency, the final yield of the function polyamide is 50% to 100%, and the purity of the function polyamide is 90% to 100%. The function polyamide disclosed by the invention is synthesized from natural raw materials, has no free formaldehyde, benzene and heavy metal and can meet a national environment-friendly material standard. The function polyamide disclosed by the invention has excellent mechanical capacity and mechanical property.

Description

technical field [0001] The invention belongs to the field of biomass-based polymer materials, and in particular relates to a functional polyamide monomer, a functional polyamide and a preparation method. Background technique [0002] Thermoplastic elastomers are found in every aspect of our lives today, such as adhesives, coatings, tubes, tires and fibers. However, most elastomers today are prepared from non-renewable resources, and renewable biomatrix thermoplastic elastomers are still in their infancy. Scientists have also developed many biomass-based thermoplastic elastomers, such as bio-based polyurethane elastomers (Donglin Tang, Christopher W.Macosko, Polym.Chem., 2014, 5, 3231-3237), protein-based thermoplastic elastomers body (Karthik Nagapudi, William T.Brinkman, Macromolecules, 2005, 38(2), pp 345–354), polyester urethane thermoplastic elastomer (Janne andJukka V. Macromolecules, 1997, 30(10), pp 2876–2882), Biomass-based elastomers derived from fatty acids (S...

Claims

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Application Information

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IPC IPC(8): C07C231/02C07C233/38C08G75/045
CPCC07C233/38C08G75/045
Inventor 汪钟凯宋凌志陶伟周江骏彭强
Owner ANHUI AGRICULTURAL UNIVERSITY
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