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Self-crosslinking acrylic resin leather finishing agent and preparation method thereof

A technology of self-crosslinking acrylic and leather finishing agent, which is applied in leather surface treatment, small raw hide/large raw hide/leather/fur treatment, small raw hide/large raw hide/leather skin/fur chemical treatment, etc., and can solve weather resistance, Insufficient lighting performance and other problems, to achieve the effects of shortening the cross-linking curing time, good adhesion, and improving the properties of hot sticky and cold brittle

Inactive Publication Date: 2012-11-07
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] Although through the improvement of the above methods, various modified acrylic resin coating agents have improved in terms of mechanics, adhesion, light resistance and other physical and chemical properties, but some properties in actual use, such as weather resistance, lighting performance, etc. There are still some shortcomings

Method used

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  • Self-crosslinking acrylic resin leather finishing agent and preparation method thereof
  • Self-crosslinking acrylic resin leather finishing agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Step 1: Pre-emulsification:

[0032] First, take 40 parts by mass of deionized aqueous solution in which 2 parts of emulsifier is dissolved and add it to the first reactor equipped with a stirrer, condenser and thermometer, and raise the temperature to 35°C;

[0033] Then 36.5 parts of butyl acrylate, 12.5 parts of methyl acrylate, 1 part of acrylic acid and 0.5 part of diacetone acrylamide were mixed and added dropwise to the first reactor within 30 minutes for pre-emulsification for 30 minutes to obtain a pre-emulsion;

[0034] The second step: polymerization reaction:

[0035] Take 20 parts by mass parts of deionized aqueous solution that is dissolved with 0.5 parts of emulsifier and add in the second reactor that has agitator, condenser and thermometer, pass into sufficient amount of N 2 Remove the oxygen in the reactor and raise the temperature to 30°C;

[0036] Then add 30 parts of pre-emulsion and 10 parts of deionized aqueous solution with 0.05 parts of initia...

Embodiment 2

[0038] Step 1: Pre-emulsification:

[0039] First, take 40 parts of deionized aqueous solution dissolved with 4 parts of emulsifier in parts by mass and add it to the first reactor with agitator, condenser and thermometer, and heat up to 40°C;

[0040]Then 36.5 parts of butyl acrylate, 12.5 parts of methyl acrylate, 1 part of acrylic acid and 1 part of diacetone acrylamide were mixed and added dropwise to the first reactor within 40 minutes for pre-emulsification for 40 minutes to obtain a pre-emulsion;

[0041] The second step: polymerization reaction:

[0042] Take 20 parts by mass parts of deionized aqueous solution that is dissolved with 0.5 parts of emulsifier and add in the second reactor that has agitator, condenser and thermometer, pass into sufficient amount of N 2 Remove the oxygen in the reactor and raise the temperature to 40°C;

[0043] Then add 30 parts of pre-emulsion and 10 parts of deionized aqueous solution with 0.1 part of initiator directly into the secon...

Embodiment 3

[0045] Step 1: Pre-Emulsification:

[0046] First, take 40 parts of deionized aqueous solution dissolved with 6 parts of emulsifier in parts by mass and add it to the first reactor with agitator, condenser and thermometer, and raise the temperature to 45°C;

[0047] Then 36.5 parts of butyl acrylate, 12.5 parts of methyl acrylate, 1 part of acrylic acid and 1.5 parts of diacetone acrylamide were mixed and added dropwise to the first reactor within 60 minutes for pre-emulsification for 60 minutes to obtain a pre-emulsion;

[0048] The second step: polymerization reaction:

[0049] Take 20 parts by mass parts of deionized aqueous solution that is dissolved with 0.8 parts of emulsifier and add in the second reactor that has agitator, condenser and thermometer, pass into sufficient amount of N 2 Remove the oxygen in the reactor and raise the temperature to 36°C;

[0050] Then, 40 parts of pre-emulsion and 10 parts of deionized aqueous solution with 0.15 parts of initiator dissol...

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Abstract

The invention provides a self-crosslinking acrylic resin leather finishing agent and a preparation method thereof. The preparation method comprises the following steps: firstly, carrying out radical polymerization on acrylate, methacrylic acid and diacetone acrylamide so as to prepare an acrylic resin emulsion; regulating the pH of the emulsion to 5-6; and adding a substance with a water-soluble protide structure as a cross-linking agent, so as to prepare a novel self-crosslinking acrylic resin leather finishing agent. According to the invention, the protide substance is used as the cross-linking agent of the acrylic resin, thereby achieving the room temperature controllable self-crosslinking of the acrylic resin, effectively promoting the physical property of a film and simplifying the production process of the acrylic resin film. The hot adhesive and cold short defects of the acrylic resin finishing agent are improved through crosslinking action; and simultaneously, the protide substance is introduced in the acrylic resin molecular chain, thus the resin film has a property of a protide film-forming agent and good comprehensive property.

Description

technical field [0001] The invention belongs to the production of leather chemicals, in particular to a self-crosslinking acrylic resin leather finishing agent and a preparation method thereof. Background technique [0002] Polyurethane resins, acrylic resins, butadiene resins, and modified protein film-forming agents are often used as film-forming materials in leather finishing, among which acrylic resins are used in the largest amount. Acrylic resin is synthesized by copolymerization of acrylate monomer and methacrylate monomer. The main absorption peak of acrylic resin is outside the solar spectrum range, so the prepared acrylic resin coating agent has excellent light resistance and Anti-aging properties. At the same time, the acrylic resin coating agent also has good flexibility and toughness, good tensile strength, strong adhesion, and no discoloration, and can be mixed with pigment paste and other water-soluble synthetic resins. [0003] However, due to the chemical ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D133/08C09D189/00C08F220/18C08F220/14C08F220/06C08F220/58C08F2/24C08J3/24C14C11/00
Inventor 强西怀张辉王艳姣陈佳
Owner SHAANXI UNIV OF SCI & TECH
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