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Preparing method and application of mould proof tanning protein filler

A protein and anti-mildew technology, applied in application, leather impregnation, small raw hide/large raw hide/leather/fur treatment, etc., can solve the problems that are not related to protein mildew, protein filler is not firmly bonded, etc., to avoid migration, The effect of increasing the degree of cross-linking

Active Publication Date: 2018-12-18
广东紫翼鞋业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In 2016, the Qingdao Maritime Court accepted the moldy problem of Korean garment leather sold to the United States. Since there was no current testing standard, three experts in the tanning industry were invited to conduct appraisal and arbitration. A lot of protein fillers are used in the process. Experts agree that the cause of mold is due to the addition of protein fillers. The protein fillers are not firmly bonded, migrate to the surface of the garment leather, and mildew occurs under a certain humidity. Therefore, At this time, the art began to realize the shortcomings of protein fillers
[0006] The existing research in this field does not involve the study of protein mildew, and the cross-linking modification is mainly carried out with organic materials to improve its complexation with collagen

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0019] A preparation method and application of an anti-mildew tanning protein filler, the preparation method of which is:

[0020] (1) Preparation of etherified amino resin: add the molar ratio of pentamethylolmelamine:methanol to a three-necked flask at a ratio of 1:2, add acid to adjust the pH value of the solution in the bottle to 4.0-5.5; heat the solution in the kettle to 30°C; Stir the reaction until the pentamethylolmelamine is completely dissolved, then add epichlorohydrin (pentamethylolmelamine: epichlorohydrin = 1:0.1 molar ratio) to the three-necked bottle, and adjust the pH of the solution in the bottle to 8~ 9; Under the conditions of a temperature of 60°C and a vacuum of 0.1 MPa, the solution in the kettle was dealcoholized and dehydrated for 2 hours to obtain the primary resin product, and the colorless viscous liquid obtained after filtration was a partially etherified amino resin;

[0021] (2) Take 42g of collagen powder, add 16g of etherified amino resin obta...

example 2

[0025] A preparation method and application of an anti-mildew tanning protein filler, the preparation method of which is:

[0026] (1) Preparation of etherified amino resin: add the molar ratio of pentamethylolmelamine:methanol to a three-necked flask at a ratio of 1:2, add acid to adjust the pH value of the solution in the bottle to 4.0-5.5; heat the solution in the kettle to 40°C; Stir the reaction until the pentamethylolmelamine is completely dissolved, then add epichlorohydrin (pentamethylolmelamine: epichlorohydrin = 1:0.1 molar ratio) to the three-necked bottle, and adjust the pH of the solution in the bottle to 8~ 9; Under the conditions of temperature 100°C and vacuum degree 0.1MPa, dealcoholize and dehydrate the solution in the kettle for 2 hours to obtain the primary resin product; the colorless viscous liquid obtained after filtration is the partially etherified amino resin;

[0027] (2) Take 42g of collagen powder, add 16g of etherified amino resin obtained in the ...

example 3

[0031] A preparation method and application of an anti-mildew tanning protein filler, the preparation method of which is:

[0032](1) Preparation of etherified amino resin: add the molar ratio of pentamethylolmelamine:methanol to a three-necked flask at a ratio of 1:2, add acid to adjust the pH value of the solution in the bottle to 4.0-5.5; heat the solution in the kettle to 35°C; Stir the reaction until the pentamethylolmelamine is completely dissolved, then add epichlorohydrin (pentamethylolmelamine: epichlorohydrin = 1:0.1 molar ratio) to the three-necked bottle, and adjust the pH of the solution in the bottle to 8~ 9; Under the conditions of temperature 80°C and vacuum degree 0.1MPa, the solution in the kettle was dealcoholized and dehydrated for 2 hours to obtain the primary resin product, and the colorless viscous liquid obtained after filtration was partially etherified amino resin;

[0033] (2) Take 42g of collagen powder, add 16g of etherified amino tree obtained in ...

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PUM

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Abstract

The invention relates to a preparing method and application of mould proof tanning protein filler. 42 g of collagen powder is taken, etherified amino resin obtained in the step and 60 g of water are added in a three-mouth flask, the system pH is adjusted to 8-9, the stirring reaction is conducted at the temperature of 70-90 DEG C for 1-2 h, then, 1-5 g of aluminum oxalate and 1.2-3.4 g of substances A are added, the stirring reaction is conducted at the temperature of 60-80 DEG C for 30 min-75 min, vacuum drying is conducted, and the mould proof tanning protein filler is obtained. The mould proof tanning protein filler is used for the tanning retanning filling technology, and the obtained leather is mould proof.

Description

technical field [0001] The invention relates to a method for preparing a protein filler, in particular to a method for preparing a mildew-proof tanning protein filler. Background technique [0002] It can improve the fullness and fullness of leather, correct the loose surface of leather, and improve the handle and poor position of leather. [0003] In the past, magnesium sulfate, glucose, etc. were often used for filling heavy leather, and they were added to the hot air drum for filling while adding oil to the heavy leather; now naphthenate can also be used for filling. Commonly used fillers for light leather include tannin extract, filling acrylic resin, amino resin and protein filler. It is usually added in the late stage of emulsion oiling, which is called wet filling. For cow and pigskin repaired leather with loose surface, water and surfactant can be used to dissolve the filling resin, and brush it on the leather surface for dry filling to reduce the loose surface. ...

Claims

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Application Information

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IPC IPC(8): C14C9/00C14C9/04C14C3/08
CPCC14C3/08C14C9/00C14C9/04
Inventor 段瑶瑶段建辉李万青
Owner 广东紫翼鞋业有限公司
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