Preparation and application of polyoxyalkyl epoxy acrylate-containing polymer active fatting agent

A technology of polyoxyalkylene epoxy acrylic acid and polyoxyalkylene epoxy vinyl, which is applied in the field of leather chemical synthesis and can solve problems such as yellowing resistance, migration resistance, and easy oxidation

Active Publication Date: 2020-05-15
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 polyoxyalkyl epoxy acrylate-containing polymer active fatting agent
  • Preparation and application of polyoxyalkyl epoxy acrylate-containing polymer active fatting agent
  • Preparation and application of polyoxyalkyl epoxy acrylate-containing polymer active fatting agent

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 synthesis method of a reactive polymer leather fatting agent. According to the method, a vinyl monomer with a polyoxyalkyl epoxy group structure, acrylic acid long-chain ester, acrylic acid and a cationic vinyl monomer are adopted and subjected to emulsion copolymerization to obtain the multi-element amphiphilic copolymer fatting agent. Epoxy groups in the molecular structure of the fatting agent have high reaction activity and can be covalently combined with skin collagen fibers; the polyoxyalkyl structure endows the copolymer with hydrophilicity and is beneficial toimproving the stability of an emulsion system; the long-chain alkyl structure plays a role in lubricating the leather fibers; and the cationic monomer can improve the bonding and fixing performance of the cationic monomer and the leather fiber. A solvent-free emulsion polymerization method is adopted for preparing the fatting agent, the requirement of the ecological fatting agent can be met, andthe fatting agent is particularly suitable for fatting non-chrome tanned leather. Because of the saturability of the molecular structure of the polymer and a reactive group contained in the molecularstructure, the defects that a traditional natural fatting agent is prone to oxidation and yellowing, poor in migration resistance and the like can be overcome.

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 Applications(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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