Preparation and application of a kind of reactive fatliquoring agent containing polyoxyalkylene epoxy group acrylate polymer

A technology of polyoxyalkylene epoxy acrylic acid and polyoxyalkylene epoxy ethylene is applied in the field of leather chemical synthesis and can solve the problems of easy oxidation, yellowing and migration resistance, etc.

Active Publication Date: 2021-04-27
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The saturation of the molecular structure of the polymer and the structural characteristics of the reactive group effectively solve the shortcomings of traditional natural fatliquor such as easy oxidation, yellowing and poor migration resistance.

Method used

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  • Preparation and application of a kind of reactive fatliquoring agent containing polyoxyalkylene epoxy group acrylate polymer
  • Preparation and application of a kind of reactive fatliquoring agent containing polyoxyalkylene epoxy group acrylate polymer
  • Preparation and application of a kind of reactive fatliquoring agent containing polyoxyalkylene epoxy group acrylate polymer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Dissolve 1.51g of emulsifier sodium lauryl sulfate in 55g of distilled water to form an aqueous emulsifier solution; add the aqueous solution of sodium lauryl sulfate into a 250mL four-necked flask, then heat it in a water bath to 80°C, turn on the stirrer to stir, and turn on Condensed water, while stirring, dropwise added 3.6g of acrylic acid, 12.88g of isooctyl acrylate and 27g of polyoxyalkylene epoxy vinyl monomer (relative molecular mass about 270), 4.67g of methacryloxy The aqueous solution prepared by ethyltrimethylammonium chloride and 20g distilled water and the aqueous potassium persulfate solution prepared by 2.02g potassium persulfate and 40g distilled water, the dropping time is controlled at 2.5 hours, and the constant temperature is reacted at 80°C for 2 hours, and finally cooled to room temperature, using a 30% aqueous sodium hydroxide solution to adjust the pH of the resulting reaction system to 6.5 to obtain a reactive fatliquoring agent containing a p...

Embodiment 2

[0032] Dissolve 2.10g of the emulsifier sodium dodecylbenzenesulfonate in 65g of distilled water to form an emulsifier aqueous solution; add the aqueous solution of sodium dodecylbenzenesulfonate into a 250mL four-necked flask, then heat it in a water bath to 80°C, and start stirring Stir with the mixer, turn on the condensed water, and add 2.5g of acrylic acid, 17.02g of 2-propylheptyl acrylate and 29.75g of polyoxyalkylene epoxy vinyl monomer (relative molecular mass about 350) dropwise to it while stirring. , the aqueous solution prepared by 2.91g dimethyl diallyl ammonium chloride and 20g distilled water and the aqueous solution of potassium persulfate prepared by 2.16g potassium persulfate and 54g distilled water, the dropping time is controlled at 3 hours, and the constant temperature reaction is carried out at 80°C After 2 hours, it was finally cooled to room temperature, and the pH of the obtained reaction system was adjusted to 6.5 with a 30% aqueous sodium hydroxide s...

Embodiment 3

[0034] Dissolve 1.2g of emulsifier sodium dodecylbenzenesulfonate in 40g of distilled water to form an emulsifier aqueous solution; add the aqueous solution of sodium dodecylbenzenesulfonate into a 250ml four-necked flask, then heat it in a water bath to 80°C, and start stirring Stir with the mixer, turn on the condensed water, and dropwise add 3.6g of acrylic acid, 21.3g of lauryl acrylate and 25.8g of polyoxyalkylene epoxy vinyl monomer (relative molecular mass about 430) to it while stirring, 3.73g The aqueous solution prepared by acryloyloxyethyltrimethylammonium chloride and 20g of distilled water and the aqueous solution of potassium persulfate prepared by 2.45g of potassium persulfate and 65g of distilled water, the dropping time is controlled at 2.5 hours, and the constant temperature reaction is carried out at 80°C for 2 hours , and finally cooled to room temperature, and using 30% aqueous sodium hydroxide solution to adjust the pH of the reaction system to 6.5 to obta...

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Abstract

The invention discloses a method for synthesizing a reactive polymer leather fatliquoring agent. The method adopts vinyl monomer with polyoxyalkylene epoxy structure, long-chain acrylate, acrylic acid and cationic vinyl monomer to obtain multiple amphiphilic copolymer fatliquor through emulsion copolymerization. The epoxy group in the molecular structure of this type of fatliquoring agent has high reactivity and can covalently bond with skin collagen fibers; the polyoxyalkylene structure endows the copolymer with hydrophilicity and is beneficial to improve the stability of the emulsion system properties; the long-chain hydrocarbon structure plays a role in lubricating the skin fibers; the cationic monomer can improve its binding and fixing properties with the skin fibers. The preparation of the fatliquoring agent described in the invention adopts a solvent-free emulsion polymerization method, which can meet the requirements of an ecological fatliquoring agent, and is especially suitable for fatliquoring non-chrome tanned leather; the saturation of the molecular structure of the polymer and the presence of reactive groups The structural characteristics can solve the shortcomings of traditional natural fatliquor such as easy oxidation, yellowing and poor migration resistance.

Description

technical field [0001] The invention belongs to the technical field of synthesis of leather chemicals, and relates to a preparation method and application of an active polymer leather fatliquoring agent, in particular to a preparation and application of a polyoxyalkylene epoxy group-containing acrylate polymer fatliquoring agent. its application. Background technique [0002] Fatliquoring is a very important process in the production of leather and fur, which has a great influence on the softness and quality properties of leather. The amount of fatliquoring agent used in the fatliquoring process is very large, as high as 10%-20% of the tare weight. Traditional leather fatliquors are mainly prepared from natural animal, vegetable and mineral oils through chlorination, sulfonation, esterification, sulfation and amidation. This kind of fatliquoring agent generally has weak bonding performance with leather, and has disadvantages such as easy migration and poor solvent extracti...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F220/32C08F220/18C08F220/06C08F220/34C08F226/02C08F2/26C14C9/02
CPCC08F2/26C08F220/32C14C9/02
Inventor 彭必雨虞德胜杜金霞贾欣驹张春晓
Owner SICHUAN UNIV
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