Process for producing long-chain alkyl waterproof currying agent

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

Inactive Publication Date: 2006-03-01
ZHEJIANG UNIV
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  • Abstract
  • Description
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  • 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 h

Method used

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Examples

Experimental program
Comparison scheme
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Example Embodiment

[0017] Example 1:

[0018] First, 120g (1.23mol) maleic anhydride is dissolved in 180ml xylene as the monomer A solution; 28ml (0.15mol) di-tert-butyl peroxide is dissolved in 43ml xylene as the initiator B solution; 420g (1.23mol) methyl Octadecyl acrylate and 35ml n-dodecanethiol were dissolved in 600ml xylene as a dropwise C solution. The monomer A solution was heated to 140°C, and the initiator B solution and the C solution were added dropwise at the same time. The B solution and the C solution were dropped within 2 hours and 3 hours, respectively. Then continue to reflux for 3 hours to prepare stearyl methacrylate-maleic anhydride copolymer;

[0019] (2) Take 107.15g (1.23mol) of morpholine as the dropwise D solution; cool the obtained stearyl methacrylate-maleic anhydride copolymer solution to 120°C, drop the D solution to the above solution, within 1.0 hour Finish dripping. Continue to reflux for 2 hours, and then perform vacuum distillation to remove the solvent to obtain ...

Example Embodiment

[0021] Example 2:

[0022] Firstly, 98g (1.00mol) maleic anhydride was dissolved in 150ml xylene as the monomer A solution; 30ml (0.16mol) di-tert-butyl peroxide was dissolved in 45ml xylene as the initiator B solution; 508g (1.5mol) methyl The octadecyl acrylate and 35 ml of n-dodecanethiol were dissolved in 730 ml of xylene as a dropwise C solution. The monomer A solution was heated to 120°C, and the initiator B solution and the C solution were added dropwise at the same time. 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 stearyl methacrylate-maleic anhydride copolymer;

[0023] (2) Using 87.11g (1.00mol) of morpholine as the dropwise D solution, cool the stearyl methacrylate-maleic anhydride copolymer solution to 90°C, drop the D solution to the above solution, drop it within 2 hours Finish. Continue to reflux for 3 hours, and then perform vacuum distillation to remove the solvent to obtain...

Example Embodiment

[0025] Example 3:

[0026] Firstly, 146g (1.50mol) maleic anhydride was dissolved in 220ml xylene as the monomer A solution; 23ml (0.12mol) di-tert-butyl peroxide was dissolved in 43ml xylene as the initiator B solution; 341g (1.00mol) methyl Octadecyl acrylate and 28ml n-dodecanethiol were dissolved in 488ml xylene as a dropwise C solution. The monomer A solution was heated to 90°C, and the initiator B solution and the C solution were added dropwise at the same time. The B solution and the C solution were dropped within 4 hours and 5 hours, respectively. Then continue to reflux for 2 hours to prepare stearyl methacrylate-maleic anhydride copolymer;

[0027] (2) Use 131g (1.5mol) of morpholine as the dropwise D solution, cool the octadecyl methacrylate-maleic anhydride copolymer solution to 130°C, drop the D solution to the above solution, drop it within 2 hours Finish. Continue to reflux for 1 hour, and then perform vacuum distillation to remove the solvent to obtain 620 g of a l...

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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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IPC IPC(8): C14C9/00
Inventor 王立周峻峰
Owner ZHEJIANG UNIV
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