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Jatropha curcas oil acrylate polymer fatliquor prepared based on miniemulsion polymerization method and method for preparing jatropha curcas oil acrylate polymer fatliquor

A technology of miniemulsion polymerization and jatropha oil, which is applied in animal husbandry, small raw hide/large raw hide/leather skin/fur chemical treatment, application, etc., and can solve the problems of low polymerization activity, low grafting rate, and fatliquor performance Poor problems, to achieve the effect of large output, good self-emulsification ability, and reduced atomization value

Inactive Publication Date: 2018-10-09
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The existing polymer fatliquor relies on carboxyl groups to combine with Cr3+ in chrome tanned leather, and has a strong binding ability. According to existing literature, current research mainly uses vegetable oils with high iodine value as hydrophobic monomers and carboxyl-containing Polymer fatliquor is prepared by copolymerization of vinyl monomers. The performance of this type of product is poor, mainly because the double bonds of vegetable oil are mostly non-conjugated double bonds, the polymerization activity is low, and the grafting rate is low. It is a very good research direction to introduce active vinyl groups into vegetable oils, and then polymerize them with carboxyl-containing vinyl monomers to prepare polymer fatliquor. Combining the advantages of miniemulsion polymerization (droplet nucleation), the high The polymerization of hydrophobic oil monomers not only conforms to the strategy of sustainable development, but also can obtain degradable polymer fatliquor with high grafting rate
Application experiments show that the prepared polymer fatliquoring agent has excellent fatliquoring performance, but the research on the preparation of polymer fatliquoring agent by introducing active vinyl group into vegetable oil to improve its polymerization activity and using miniemulsion polymerization method is still rare to report

Method used

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  • Jatropha curcas oil acrylate polymer fatliquor prepared based on miniemulsion polymerization method and method for preparing jatropha curcas oil acrylate polymer fatliquor
  • Jatropha curcas oil acrylate polymer fatliquor prepared based on miniemulsion polymerization method and method for preparing jatropha curcas oil acrylate polymer fatliquor
  • Jatropha curcas oil acrylate polymer fatliquor prepared based on miniemulsion polymerization method and method for preparing jatropha curcas oil acrylate polymer fatliquor

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] The following are parts by mass

[0053] Step 1: Preparation of epoxy jatropha oil

[0054] Add 50 parts of jatropha oil, 10 parts of glacial acetic acid, and 0.75 parts of concentrated sulfuric acid into a 250ml three-necked flask and mix evenly, raise the temperature to 30°C, drop 40 parts of hydrogen peroxide into the three-necked flask, add dropwise for 1 hour, and heat up to React at 60°C for 6 hours. After the reaction, cool to room temperature to remove water, wash with water until neutral, and obtain epoxy jatropha oil.

[0055] Step 2: Preparation of jatropha oil acrylate

[0056] Add the epoxy jatropha oil, the reaction product of step 1, into a 250ml three-necked flask, add 0.5 parts of p-toluenesulfonic acid as a catalyst, add 0.1 parts of hydroquinone as a polymerization inhibitor, and slowly drop 15 parts of acrylic acid Into a three-necked flask, add dropwise for 0.5h, and react at 100°C for 3h to obtain jatropha oil acrylate.

[0057] Step 3: Preparat...

Embodiment 2

[0062] The following are parts by mass

[0063] Step 1: Preparation of epoxy jatropha oil

[0064] Add 48 parts of Jatropha curcas oil, 10.5 parts of glacial acetic acid, and 0.8 parts of concentrated sulfuric acid into a 250ml three-necked flask and mix evenly, raise the temperature to 30°C, drop 42 parts of hydrogen peroxide into the three-necked flask, add dropwise for 1 hour, and heat up to React at 60°C for 6.5 hours. After the reaction, cool to room temperature to remove water in layers, wash with water until neutral, and obtain epoxy jatropha oil.

[0065] Step 2: Preparation of Acrylated Jatropha Oil

[0066] Add the epoxy jatropha oil, the reaction product of step 1, into a 250ml three-necked flask, add 0.4 parts of p-toluenesulfonic acid as a catalyst, add 0.2 parts of hydroquinone as a polymerization inhibitor, and slowly drop 15 parts of acrylic acid To a three-necked flask, add dropwise for 0.5h, and react at 100°C for 3h to obtain acrylated jatropha oil.

[00...

Embodiment 3

[0072] The following are parts by mass

[0073] Step 1: Preparation of epoxy jatropha oil

[0074] Add 45 parts of jatropha oil, 11 parts of glacial acetic acid, and 0.85 parts of concentrated sulfuric acid into a 250ml three-necked flask and mix evenly, heat up to 30°C, drop 45 parts of hydrogen peroxide into the three-necked flask, add dropwise for 1 hour, and heat up to React at 60°C for 6 hours. After the reaction, cool to room temperature to remove water, wash with water until neutral, and obtain epoxy jatropha oil.

[0075] Step 2: Preparation of jatropha oil acrylate

[0076] Add the epoxy jatropha oil, the reaction product of step 1, into a 250ml three-necked flask, add 0.45 parts of p-toluenesulfonic acid as a catalyst, add 0.3 parts of hydroquinone as a polymerization inhibitor, and slowly drop 15 parts of acrylic acid To a three-necked flask, add dropwise for 0.5h, and react at 100°C for 3h to obtain acrylated jatropha oil.

[0077] Step 3: Fine emulsification of...

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Abstract

The invention relates to a jatropha curcas oil acrylate polymer fatliquor prepared based on a miniemulsion polymerization method and a method for preparing the jatropha curcas oil acrylate polymer fatliquor. The method comprises the following steps: epoxidizing jatropha curcas oil by using hydrogen peroxide, glacial acetic acid and concentrated sulfuric acid to obtain epoxy jatropha curcas oil; taking sodium p-toluenesulfonate as a catalyst, hydroquinone as a polymerization inhibitor and acrylic acid as a nucleophilic reagent to carry out ring-opening reaction on the epoxy jatropha curcas oilto obtain jatropha curcas oil acrylate and introducing an active vinyl part into a vegetable oil molecular chain; dissolving sodium dodecyl sulfate and n-butyl alcohol into deionized water, carrying out ultrasonic uniformity to form an aqueous phase, mixing the aqueous phase with an oil phase, carrying out shearing emulsification and ultrasonic operation to obtain faint yellow stable miniemulsion;adding maleic anhydride, a catalyst, acetanilide and acrylic acid into the miniemulsion for carrying out polymerization reaction to obtain the jatropha curcas oil acrylate polymer fatliquor. The fatliquor has better cold water emulsibility and hydrophilicity, and is a green environmental and biodegradable fatliquoring material.

Description

technical field [0001] The invention belongs to the technical field of leather chemical production, and relates to a method for preparing a jatropha oil acrylate polymer fatliquoring agent based on a miniemulsion polymerization method. Background technique [0002] Fatliquor is an important leather chemical in leather processing. Fatliquor can give leather a soft feel. Polymer fatliquor is a resinous fatliquor with amphiphilic structure. It has both It has a certain retanning effect, has a strong binding ability with leather, and has excellent waterproof performance. However, most of the petroleum-based polymer fatliquor products are currently used, which have poor degradability and cause serious pollution to the environment. With the depletion of petroleum resources, it is imminent to find alternative raw materials that are green and environmentally friendly. [0003] Jatropha curcas is planted in large quantities in the mountainous areas of southwest my country, and it ha...

Claims

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Application Information

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IPC IPC(8): C08F289/00C08F222/06C08F220/06C14C9/02
CPCC08F289/00C14C9/02C08F222/06
Inventor 马建中于帅吕斌
Owner SHAANXI UNIV OF SCI & TECH
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