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A kind of preparation method and application of mildew-proof tanning protein filler

A protein and mildew-proof technology, applied in the application, leather impregnation, small raw hide/large raw hide/leather/fur treatment, etc., can solve the problems of weak binding of protein fillers, not involving protein mildew, etc., to avoid migration. Effect

Active Publication Date: 2021-03-12
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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  • A kind of preparation method and application of mildew-proof tanning protein filler
  • A kind of preparation method and application of mildew-proof tanning protein filler
  • A kind of preparation method and application of mildew-proof tanning protein filler

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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 pentamethylene melamine:methanol to a three-necked bottle at a molar ratio of 1:2, add acid to adjust the pH value of the solution in the bottle to 4.0-5.5; heat up the solution in the there-necked bottle 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 temperature 60°C and vacuum degree 0.1MPa, dealcoholize and dehydrate the solution in the there-necked bottle for 2 hours to obtain the primary resin product, and the colorless viscous liquid obtained after filtration is the partially etherified amino resin;

[0021] (2) Take 42g of collagen powder, add 16g of partially etherif...

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 pentamethylene melamine:methanol to a three-necked bottle at a molar ratio of 1:2, add acid to adjust the pH value of the solution in the bottle to 4.0-5.5; heat up the solution in the there-necked bottle 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 there-necked bottle for 2 hours to obtain the primary product of the resin; the obtained colorless viscous liquid after filtration is the partially etherified amino resin; (2 ) Take 42g of collagen powder, add 16g of partially etherified ...

example 3

[0030] A preparation method and application of an anti-mildew tanning protein filler, the preparation method of which is:

[0031](1) Preparation of etherified amino resin: add pentamethylene melamine:methanol to a three-necked bottle at a molar ratio of 1:2, add acid to adjust the pH value of the solution in the bottle to 4.0-5.5; heat up the solution in the there-necked bottle 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, dealcoholize and dehydrate the solution in the there-necked bottle for 2 hours to obtain the primary resin product, and the colorless viscous liquid obtained after filtration is the partially etherified amino resin;

[0032] (2) Take 42g of collagen powder, add 16g of partially etherifi...

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Abstract

The present invention relates to a preparation method and application of mildew-proof tanning protein filler. Take 42g of collagen powder, add the etherified amino resin and 60g of water obtained in the step into a three-necked flask, adjust the pH of the system to 8-9, and set the pH at 70 Stir and react at ~90°C for 1~2h, then add 1~5g of aluminum oxalate and 1.2~3.4g of substance A, stir and react at 60~80°C for 30min~75min, and vacuum dry to obtain mildew-resistant tanning protein filler. The anti-mildew tanning protein filler is used in the retanning filling process of leather, and the obtained leather has anti-mildew.

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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Patent Type & Authority Patents(China)
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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