Process for producing long-chain alkyl waterproof currying agent

The technology of long-chain alkyl and fatliquor is applied in the field of preparation of long-chain alkyl waterproof and fatliquor, which can solve the problems of weak binding of leather fibers, weak affinity and high price, and achieve enhanced waterproof performance and low production cost. , the effect of improving elasticity

Inactive Publication Date: 2007-07-25
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although these types of waterproof and fatliquoring agents have a certain waterproof and fatliquoring function, they either have weak affinity, weak binding to leather fibers, easy migration, etc., or have some problems such as relatively high prices.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] First 120g (1.23mol) maleic anhydride is dissolved in 180ml xylene as monomer A solution; 28ml (0.15mol) di-tert-butyl peroxide is dissolved in 43ml xylene as initiator B solution; 420g (1.23mol) methyl Octadecyl acrylate and 35ml of n-dodecanethiol were dissolved in 600ml of xylene as solution C for dropwise addition. The monomer A solution was heated to 140°C, and at the same time, the initiator B solution and the C solution were added dropwise, and the B solution and the C solution were dropped within 2 hours and 3 hours respectively. Then continue to reflux for 3 hours to make stearyl methacrylate-maleic anhydride copolymer;

[0018] (2) Add 107.15g (1.23mol) morpholine as solution D dropwise; cool the obtained octadecyl methacrylate-maleic anhydride copolymer solution to 120°C, add solution D dropwise to the above solution, within 1.0 hour Drip finished. Continue to reflux for 2 hours, then carry out decompression distillation to remove solvent, obtain 650g light...

Embodiment 2

[0021] First 98g (1.00mol) maleic anhydride is dissolved with 150ml xylene as monomer A solution; 30ml (0.16mol) di-tert-butyl peroxide is dissolved with 45ml xylene as initiator B solution; 508g (1.5mol) methyl Octadecyl acrylate and 35ml of n-dodecanethiol were dissolved in 730ml of xylene as solution C for dropwise addition. The monomer A solution was heated to 120°C, and at the same time, the initiator B solution and the C solution were added dropwise, and the B solution and the C solution were dropped within 3 hours and 4 hours respectively. Then continue to reflux for 4 hours to obtain octadecyl methacrylate-maleic anhydride copolymer;

[0022] (2) Add 87.11g (1.00mol) morpholine as solution D dropwise, cool the octadecyl methacrylate-maleic anhydride copolymer solution to 90°C, add solution D dropwise to the above solution, and drop it within 2 hours Finish. Continue to reflux for 3 hours, then carry out decompression distillation to remove solvent, obtain 730g light ...

Embodiment 3

[0025] First 146g (1.50mol) maleic anhydride is dissolved with 220ml xylene as monomer A solution; 23ml (0.12mol) di-tert-butyl peroxide is dissolved with 43ml xylene as initiator B solution; 341g (1.00mol) methyl Octadecyl acrylate and 28ml of n-dodecanethiol were dissolved in 488ml of xylene as solution C for dropwise addition. The monomer A solution was heated to 90°C, and at the same time, the initiator B solution and the C solution were added dropwise, and the B solution and the C solution were dropped within 4 hours and 5 hours respectively. Then continue to reflux for 2 hours to obtain stearyl methacrylate-maleic anhydride copolymer;

[0026] (2) Add 131g (1.5mol) morpholine as solution D dropwise, cool the octadecyl methacrylate-maleic anhydride copolymer solution to 130°C, add solution D dropwise to the above solution, and drop it within 2 hours Finish. Continue to reflux for 1 hour, then carry out decompression distillation to remove solvent, obtain 620g light yell...

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PUM

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Abstract

This method discloses a kind of producing method of long-chain alkyl water proof currying agent. Methyl acrylic acid long-chain unsaturated anhydride is used as product to synthesize methyl acrylic acid long-chain alkyl ester--- unsaturated anhydride copolymers. The amidation for the copolymer is made with amine, the long-chain alkyl water proof currying agent is obtained

Description

technical field [0001] The invention relates to a preparation method of a long-chain alkyl waterproof and fatliquoring agent for tanning. Background technique [0002] Leather and its products are favored by consumers for their unique air permeability, water vapor permeability and soft, plump, comfortable and pleasant feel. However, with the improvement of people's living standards, consumers have put forward higher requirements for leather products, requiring that leather products not only have fashionable styles, but also have a unique feel, and should also have waterproof, washable and other properties. Improve the practicality and durability of leather products. In some special fields of industry, geology, water conservancy, military industry, sports and other departments, due to the humid environment, the demand for waterproof leather continues to grow, and the requirements are getting higher and higher; civilian leather products also have a certain improvement in the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C14C9/00
Inventor 王立周峻峰
Owner ZHEJIANG UNIV
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