Preparation method of polymer fatliquoring agent

A technology of polymer and fatliquoring agent, applied in the field of preparation of polymer fatliquor, can solve the problems of leather softness and lack of oily feeling, and achieve the effect of mild reaction conditions

Inactive Publication Date: 2010-06-23
ZHEJIANG IND & TRADE VACATIONAL COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For leather retanning, white leather can be obtained, but the softness and oiliness of the leather are insufficient

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Add 500g corn oil, 2.5g fluoroantimonic acid, 90g maleic anhydride and 48g styrene into a 1000ml three-necked flask equipped with a stirrer, stir at room temperature for 40-60 minutes, then raise the temperature to 110°C within 50 minutes , and stirred at this temperature for 180min. Remove unreacted monomers in vacuum, lower the temperature to 35°C-45°C, neutralize with ammonia water to pH 6.5-7.5, and stir for 60 minutes while keeping the system temperature not exceeding 60°C to obtain the final product.

[0027] The product obtained in Example 1 is used to fatliquify yellow cowhide wet blue leather with a thickness of 1.2 mm. Before adding the fatliquoring agent, the pH value of the leather is neutralized to 5.5, and the liquid ratio is adjusted to be 150%, and the tare weight is added. 20% fatliquor, rotate at 45°C for 2 hours, then add appropriate amount of dye (anionic) and rotate for 1 hour. Reduce the operating solution to pH 3.8 with acid. Finally wash, squee...

Embodiment 2

[0029] Add 300g corn oil, 200g soybean oil, 4.5g fluoboric acid, 90g maleic anhydride, 30g styrene and 18g vinyl acetate into a 1000ml three-necked flask equipped with a stirrer, stir at room temperature for 20-30 minutes, and then Raise the temperature to 70°C within minutes, and keep stirring at this temperature for 480 minutes. Remove unreacted monomers in vacuum, lower the temperature to 40°C, neutralize with 40% aqueous sodium hydroxide solution to pH 6.0-7.5, and stir for 30 minutes while keeping the system temperature at 50°C to obtain the final product.

Embodiment 3

[0031] 300g corn oil, 300g sunflower oil, 15g chlorosulfonic acid, 72g maleic anhydride, 38g styrene, 24g vinyl acetate and 30g ethylene glycol dimethacrylate are added in a 1000ml there-necked flask equipped with a stirrer, Stir at room temperature for 40 minutes, then raise the temperature to 85° C. within 30 minutes, and keep stirring at this temperature for 400 minutes. Remove unreacted monomers in a vacuum, lower the temperature to 40°C, neutralize with diethanolamine to a pH value of 7.0-8.5, and stir for 40 minutes while keeping the system temperature at 45°C to obtain the final product.

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PUM

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Abstract

The invention provides a preparation method of polymer fatliquoring agent, comprising the following steps: (1) component A and component B are mixed, the component A is at least one of natural oil containing unsaturated fatty acid and long carbon chain unsaturated fatty acid ester, the component B at least comprises monoene which belongs to an unsaturated monomer, peracid is used as catalyst, so as to carry out copolymerization; (2) alkali is added in a polymer which carries out copolymerization, and the alkali and the polymer carry out neutralization reaction, the polymer is neutralized to have pH value from 6.0 to 8.5. In the invention, the peracid is used as the catalyst, the reaction condition is mild, no waste is discharged in the reaction process, and the product can be biologically degraded.

Description

technical field [0001] The invention relates to a preparation method of a polymer fatliquoring agent. Background technique [0002] Zheng Tao [Development of New Polymer Fatliquor, Leather Chemical Industry, 2000, 17(3): 15-18] prepared a polymer leather fatliquor by using vegetable oil, vinyl monomer and other raw materials. The experimental results show that under the action of the initiator, only when the reaction temperature reaches above 110°C, the resulting product has better stability, otherwise the resulting product is easy to separate. The ideal reaction temperature is 120-160°C. [Synthesis and Application of Fatliquoring Agent WRF-1, Leather Science and Engineering, 2004, 14(1): 33-36] prepared by copolymerizing animal and vegetable oils and maleic anhydride at 130℃~150℃ The precursor of water-washable fatliquoring agent was obtained, and then modified by esterification and grafting with alcohol wax and silicone oil, and a high-molecular water-washable fatliquori...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F289/00C08F222/08C14C9/02
Inventor 卢行芳
Owner ZHEJIANG IND & TRADE VACATIONAL COLLEGE
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