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Tannic Acid Extraction Hydrolyzable Tannin Condensed Tannins
Product Details:
Payment & Shipping Terms:
| Minimum Order Quantity: | 25kg |
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| Price: | 60~70USD |
| Packaging Details: | 25kg/barrel |
| Delivery Time: | 5-10days |
| Payment Terms: | L/C,T/T,Western Union,MoneyGram |
| Supply Ability: | 1000T |
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Detail Information |
Product Description
Quality indicators
| index | unit | Cold melt | Hot melt |
| Tannin | ％ | ≧67 | ≧71 |
| Non-tannin | ％ | ≦30 | ≦26 |
| Insoluble matter | ％ | ≦2.5 | ≦3.5 |
| Water content | ％ | ≦12 | ≦12 |
The application of tannins in the textile industry mainly includes the following aspects:
Textile adhesive: Tannin extract can be used as a textile adhesive for yarn sizing preparation to improve yarn strength and uniformity.
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Hydrophilic cross-linking modification: Tannin extract is used as a filling material to perform hydrophilic cross-linking modification on the microfiber synthetic leather base fabric to improve the hygroscopicity and water vapor permeability of the base fabric. Studies have shown that the hygroscopicity of the base fabric modified by cross-linking agents such as tannins has increased by 35.66%, the water vapor permeability has increased by 53.23%, and the tensile strength has been improved, and the modification does not affect the softness of the base fabric.
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Dyeing auxiliary: tannin itself has color and can be used as a direct dye; in addition, tannin can undergo a complex reaction with metal salts, and the resulting complex can significantly change the chromatogram of tannin and increase the bonding fastness to leather. Therefore, tannin can also be used as a mordant dye to dye leather.