Method for preparing amino silicon oil modified acrylic resin leather finishing agent

A technology of acrylic resin and leather finishing agent, which is applied in the fields of leather surface treatment, small raw hide/large raw hide/leather/fur treatment, small raw hide/large raw hide/leather skin/fur chemical treatment, etc. It can solve limitations, poor stability, Difficult to store and other issues

Inactive Publication Date: 2014-08-06
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Zhu Yangrong et al. (Journal of Materials Science and Engineering, 2006, 24 (2): 244.) added functional monomer acetoacetoxy ethyl methacrylate to the synthetic acrylic resin emulsion, and then added KH550 (γ-aminopropyl Triethoxysilane) to obtain room temperature self-crosslinking hybrid silicon acrylic emulsion, the water resistance and aging resistance of the silicon acrylic latex film are significantly improved, but its stability is poor, it is not easy to store, and its application is limited

Method used

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  • Method for preparing amino silicon oil modified acrylic resin leather finishing agent
  • Method for preparing amino silicon oil modified acrylic resin leather finishing agent

Examples

Experimental program
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Effect test

Embodiment 1

[0026] A preparation method of amino silicone oil modified acrylic resin leather finishing agent, comprising the following steps:

[0027] 1) Preparation of monomer pre-emulsion

[0028] Mix 30g of butyl acrylate, 8g of methyl acrylate, 1g of methacrylic acid, and 1g of acetoacetoxyethyl methacrylate (AAEM) evenly, and add them dropwise within 0.5h to 40g of deionized water, 2g of dodecyl In the emulsifier solution composed of sodium sulfate and 1g OS15, OS15 is fatty alcohol polyoxyethylene ether, n=15, the temperature in the reactor is controlled at 40°C, after the addition is completed, stir at 40°C for 1 hour to obtain a mixed single body pre-emulsion;

[0029] 2) Preparation of acrylic resin emulsion

[0030] Based on the total mass fraction of the mixed monomer pre-emulsion, take 10% of the pre-emulsion, 0.05g of ammonium persulfate initiator and 10g of deionized water and add them to another reactor to mix evenly, raise the temperature to 75°C, and wait After the emu...

Embodiment 2

[0037] A preparation method of an amino silicone oil modified acrylic resin leather finishing agent, specifically comprising the following steps:

[0038] 1) Preparation of monomer pre-emulsion

[0039] Mix 25g of butyl acrylate, 10g of methyl acrylate, 1.5g of methacrylic acid, and 3g of acetoacetoxyethyl methacrylate (AAEM) evenly, and add them dropwise within 0.5h to 40g of deionized water, 2g of dodecane In the emulsifier solution composed of sodium hydroxysulfate and 1g OS15, OS15 is fatty alcohol polyoxyethylene ether, n=15, the temperature in the reactor is controlled at 45°C, after the addition is completed, stir for 1h at 45°C to obtain a mixed monomer pre-emulsion;

[0040] 2) Preparation of acrylic resin emulsion

[0041] Based on the total mass fraction of the mixed monomer pre-emulsion, take 10% of the pre-emulsion, 0.075g of ammonium persulfate initiator and 10g of deionized water and add them to another reactor to mix evenly, raise the temperature to 82.5°C, a...

Embodiment 3

[0048] A preparation method of an amino silicone oil modified acrylic resin leather finishing agent, specifically comprising the following steps:

[0049] 1) Preparation of monomer pre-emulsion

[0050] Mix 20g of butyl acrylate, 15g of methyl acrylate, 2g of methacrylic acid, and 2g of acetoacetoxyethyl methacrylate (AAEM) evenly, and add them dropwise within 0.5h to 40g of deionized water, 2g of dodecyl In the emulsifier solution composed of sodium sulfate and 1g OS15, OS15 is fatty alcohol polyoxyethylene ether, n=15, the temperature in the reactor is controlled at 50°C, after the addition is completed, stir at 50°C for 1 hour to obtain a mixed single body pre-emulsion;

[0051] 2) Preparation of acrylic resin emulsion

[0052] Based on the total mass fraction of the mixed monomer pre-emulsion, take 10% of the pre-emulsion, 0.1g of ammonium persulfate initiator and 10g of deionized water and add them to another reactor to mix evenly, heat up to 90°C, and wait After the e...

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Abstract

The invention discloses a method for preparing an amino silicon oil modified acrylic resin leather finishing agent. The method comprises the following steps of: firstly, introducing acetoacetic acid ethyl methacrylate (AAEM) serving as a functional monomer into an acrylic resin molecular chain to prepare self-crosslinking acrylic resin emulsion; and compounding the amino silicon oil emulsion and acrylic resin emulsion according to a certain proportion to prepare a room-temperature self-crosslinking acrylic resin leather finishing agent by using the amino silicon oil as a crosslinking agent. According to the invention, self-crosslinking is carried out on the leather finishing agent at the room temperature, and a amino silicon oil crosslinking acrylic resin net structure is formed after film formation; and due to introduction of the amino silicon oil, the flexibility and the smoothness of the film are increased and the hand feel of the film is improved. By the improvement method, the physical performance of leather coating can be obviously improved, the defect of hot stickiness and cold brittleness of the traditional acrylic resin is overcome, and the method has wide application prospect in the field of leather coating.

Description

technical field [0001] The invention relates to the technical field of leather chemical production, in particular to a preparation method of an amino silicone oil modified acrylic resin leather finishing agent. Background technique [0002] Finishing agent is one of the very important chemical raw materials in leather processing. Commonly used leather finishing agents include polyurethane, acrylic resin, butylene glycol resin, and modified protein, among which acrylic resin is the most used. Acrylic resin is copolymerized from acrylate, methacrylate and styrene-based monomers. Compared with other materials, it has many advantages, such as: excellent adhesion, tough coating film, smooth and bright, and light resistance and aging resistance , Water resistance than casein hydroxyl, easy to use. At the same time, the acrylic resin coating agent has good blendability with most of the pigment pastes, and the formed film is soft to the touch, and has good wear resistance and scrat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G81/02C08F220/18C08F220/14C08F220/06C09D187/00C14C11/00
Inventor 强西怀沈桥张辉艾倩
Owner SHAANXI UNIV OF SCI & TECH
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