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Treatment of leather including employing pectin

A technology of leather and pectin, which is applied in the field of leather manufacturing and can solve problems such as release problems

Active Publication Date: 2020-12-04
A 史密特亲子贸易有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Furthermore, since generally these polymeric compounds are not largely biodegradable, they are unwanted compounds in tanneries waste streams and can cause release problems during the leather's life cycle

Method used

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  • Treatment of leather including employing pectin
  • Treatment of leather including employing pectin
  • Treatment of leather including employing pectin

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0071] Materials and methods

[0072] pectin

[0073] Two commercial citrus pectins were obtained: CT 01 (low methoxyl) and CT 02 (amidated), and a beet pectin SB 01 (high methoxyl). All of these pectins are extracted and processed at the supplier. Pectin is not enzymatically treated at the supplier. For leather application tests, these pectins were used unmodified (unmodified pectin) and modified (enzymatically hydrolyzed and / or demethoxylated) to give partially enzymatically hydrolyzed pectin, demethoxylated Pectin or partially enzymatically hydrolyzed demethoxylated pectin.

[0074] Table 1: Unmodified pectin samples used in this study

[0075] pectin source Degree of methoxylation[%] Amidation degree [%] Remark CT 01 Tangerine 37-38 - low methoxy CT 02 Tangerine 29-30 21 amidation SB 01 beet 54-65 - high methoxyl

[0076] enzyme

[0077] Endopolygalacturonase M2 (Aspergilus aculeatus), a pectin hydrolase, was o...

Embodiment 1

[0094] Wet blue (WB) bovine leather (thickness 1-2 mm) was treated according to the basic recipe in Table 3, wherein 1.5% (weight of shaved leather based on WB) was applied during retanning after mineral retanning and neutralization. ) unmodified citrus pectin CT 02, unmodified sugar beet pectin SB 01 or synthetic derivatives (Syntan RS 540 from Smit & zoon) immediately followed by the addition of phenolic retanning agents and dyes.

[0095] Table 3: The post-tanning treatment formulation of Example 1

[0096]

[0097]

[0098] The resulting crust samples were compared to a reference which was treated according to Table 3 with Syntan RS 540 instead of pectin, or treated without the addition of pectin or RS540 Sample (blank). The results are listed in Table 4. Both samples help improve stain intensity and fullness. Softness properties vary.

[0099] Table 4: Sensory evaluation of Example 1 (leather treated with CT 02 relative to blank evaluation, leather treated with ...

Embodiment 2

[0102] Wet blue (WB) bovine leather (thickness 1-2 mm) was treated according to the recipe in Table 3, modified for shoe upper articles, where 1- 2% (active matter, based on WB shaved leather) of partially enzymatically hydrolyzed citrus pectin CT 01 (H-CT 01), partially enzymatically hydrolyzed beet pectin SB 01 (H-SB 01 pectin ) or synthetic derivatives (Syntan RS 540 from Smit&Zoon), followed immediately by the addition of phenolic retanning agents and dyes.

[0103] Table 5: Sensory evaluation of Example 2 (all samples vs reference WB treated with Syntan RS 540)

[0104] H-CT 01 H-SB 01 textured appearance +- +- Dyeing uniformity - - staining intensity +++ +++ texture firmness + +- softness + - Fullness - +-

[0105] The resulting crust samples were compared to a reference, which was a sample of crust similar to the test sample but treated with Syntan RS 540 instead of pectin. The results are listed in Table 5. ...

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PUM

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Abstract

The invention concerns a method for manufacturing leather including employing pectin and leather thus obtained, in particular leather impregnated with pectin.

Description

technical field [0001] The invention relates to the field of leather manufacturing. Background technique [0002] Leather is a versatile material used in a variety of applications. Leather manufacturers are concerned with customizing leather for multiple applications. Furthermore, the raw hides that form the basis of leather manufacturing are of natural origin and as such contain imperfections and natural variations. Even despite these imperfections and natural variations, there remains the challenge of valorizing these raw materials to the maximum. Additionally, new colors, looks and textures need to be applied or developed as consumer preferences continue to evolve. [0003] To meet these needs, leather manufacturing includes methods with many possibilities for customizing products. Variations in hides, processing and selection of chemicals allow leather manufacturers to produce a wide variety of end products. While leather production methods are varied, the essence o...

Claims

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Application Information

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IPC IPC(8): C14C3/08C14C3/28C14C9/00C14C9/02
CPCC14C3/08C14C3/28C14C9/00C14C9/02
Inventor 马玉洁W·厄尔哈特F·范德克利斯W·J·穆德J·范哈维伦
Owner A 史密特亲子贸易有限公司
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