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Method for preparing amphiprotic copolymer poly-dodecyl acrylic amide acrylic acid

The technology of polydodecyl acrylamide acrylic acid and dodecyl acrylamide is applied in the field of preparation of amphoteric polymer, can solve the problems such as unclear and complete disclosure of preparation methods, and achieves reduced product cost, simple process, The effect of low energy consumption

Inactive Publication Date: 2011-06-15
NORTHEAST DIANLI UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

According to relevant literature reports, the amphoteric copolymer dodecylacrylamide-6-acrylamido caproic acid has been widely used in the preparation of photonics films, but the literature only records that the above-mentioned amphoteric polymers are synthesized in benzene, and it is not clear Fully disclose its preparation method

Method used

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  • Method for preparing amphiprotic copolymer poly-dodecyl acrylic amide acrylic acid
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  • Method for preparing amphiprotic copolymer poly-dodecyl acrylic amide acrylic acid

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Experimental program
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Embodiment 1

[0045] The preparation of embodiment 1 amphoteric copolymer polydodecylacrylamide acrylic acid:

[0046] (1) Synthesis of dodecyl acrylamide

[0047] 1) Add 2.24ml of triethylamine and 2.99g of 1-dodecylamine to 30ml of chloroform, stir to dissolve under ice bath, and obtain solution 1.

[0048] 2) Add 1.30 ml of acryloyl chloride to another 30 ml of chloroform to obtain solution 2. Slowly add solution 2 to solution 1 in the ice bath state, continue ice bathing for 30 minutes after the addition, keep the solution alkaline (pH=8-10), and then react at room temperature for 1 hour.

[0049]3) Add 1 mol / L HCl solution to the reactant in step 2), adjust the pH=1, and let it stand for 30-60 minutes.

[0050] 4) Transfer the reaction solution in step 3) into a separatory funnel for liquid separation, and collect the organic phase.

[0051] 5) Add NaHCO to step 4) organic phase 3 The pH of the solution was adjusted to 9, and after liquid separation, the organic phase was collected...

Embodiment 2

[0063] The preparation of embodiment 2 amphoteric copolymer polydodecylacrylamide acrylic acid:

[0064] (1) Synthesis of dodecyl acrylamide

[0065] 1) Add 2.94ml of triethylamine and 2.99g of 1-dodecylamine to 30ml of chloroform, and stir while ice-bathing to prepare solution 1.

[0066] 2) Add 1.71ml of acryloyl chloride to another 30ml of chloroform, and record it as solution 2. Slowly add solution 2 to solution 1 prepared in step 1) in ice bath state, keep ice bath for 30 minutes after the addition, and keep the solution alkaline (pH=8-10), then react at room temperature for 1 h.

[0067] 3) The reaction liquid in step 3) is adjusted to pH=1 with 1 mol / L HCl solution, and left for 30-60 minutes.

[0068] 4) Move the reaction solution in step 3) into a separatory funnel for liquid separation, and collect the organic phase.

[0069] 5) Add NaHCO to step 4) organic phase 3 solution, adjusted to pH=9, and collected the organic phase.

[0070] 6) Add saturated saline with...

Embodiment 3

[0081] The preparation of embodiment 3 amphoteric copolymer polydodecylacrylamide acrylic acid:

[0082] (1) Synthesis of dodecyl acrylamide

[0083] 1) Add 3.36ml of triethylamine and 2.99g of 1-dodecylamine into 30ml of chloroform, stir to dissolve under ice bath, and obtain solution 1.

[0084] 2) Add 1.95 ml of acryloyl chloride to another 30 ml of chloroform to obtain solution 2. Slowly add solution 2 to solution 1 in the ice bath state, continue ice bathing for 30 minutes after the addition, keep the solution alkaline (pH=8-10), and then react at room temperature for 1 hour.

[0085] 3) Add 1 mol / L HCl solution to the reactant in step 2), adjust the pH=1, and let it stand for 30-60 minutes.

[0086] 4) Transfer the reaction solution in step 3) into a separatory funnel for liquid separation, and collect the organic phase.

[0087] 5) Add NaHCO to step 4) organic phase 3 The pH of the solution was adjusted to 9, and after liquid separation, the organic phase was collec...

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Abstract

The invention relates to a method for preparing an amphoteric copolymer, namely a polydodecyl acrylamide acrylic acid. The method takes DMSO as an organic solvent, a crylic acid and dodecyl acrylamide as raw materials, and AIBN as an initiator; as measured by mol, the ratio of the dodecyl acrylamide to the crylic acid is 4 to 1, the ratio of the AIBN to the crylic acid is 1 to 10, and the ratio of the DMSO to the crylic acid is 70 to 1; the DMOS, the crylic acid and the dodecyl acrylamide with required amount are added into a reactor in turn according to the mol ratio, and benzene is added after dissolution, a mass ratio of the crylic acid to the benzene is between 1 to 200 and 1 to 250; the AIBN with required amount is then added, temperature rise is performed and the reaction temperature is controlled to 60 DEG C, and then polymerization is performed for 12 hours; and a polymer prepared is concentrated at a temperature of between 17 and 21 DEG C and under the pressure of between 0.02 and 0.04 MPa, and target products are prepared after dissolution through chloroform, sedimentation, centrifugal separation, decompression drying and so on of the polymer.

Description

technical field [0001] The invention belongs to a preparation method of an amphoteric polymer, in particular to a preparation method of an amphoteric copolymer polydodecylacrylamide acrylic acid. Background technique [0002] A self-assembled film is a thin film formed by molecules spontaneously adsorbing on a solid substrate through chemical bonds in a solution (or gaseous state), and its system mainly includes organosilane / hydroxylated surface (SiO 2 / Si,Al 2 o 3 / Al, glass, etc.); Mercaptans / Au, Ag, Cu; Alcohols and amines / Pt; Carboxylic acids / Al 2 o 3 , Ag, etc. The molecules in the self-assembled film are bonded and arranged in an orderly manner, with the least defects, and are in a "crystalline state". It is easy to study modern physical and chemical characterization techniques in order to regulate the relationship between the structure and properties of the film. It is necessary to study various complex phenomena on the surface and interface. It is an ideal model...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F220/70C08F220/06
Inventor 贾若琨闫永楠
Owner NORTHEAST DIANLI UNIVERSITY