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2022年12月04日 Shandong Leahou Light Industrial of New Material Co., Ltd Welcome!

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LEATAN R12
发布日期:2017-01-13 浏览次数:2008


【Chem.constitution】   

Polymer for retanning chrome-tanned leather

【Application】   

Polymer for retanning chrome-tanned leather

【Characteristics features】

Colour-consistency: pourable, viscous, yellowish or brownish liquid

pH :in 10% aqueous solution 6.0-7.0

Solid content (%) :38-42

Charge :anionic

Shelf life: 1 year

【Properties】

►LEATAN R12 is supplied in the form of a pourable, viscous, yellowish or brownish liquid which   is easy to dilute with hot water. It is sensitive to acids, and the solids can precipitate at a pH of   less than 3.8. Attention also needs to be paid to its compatibility with cationic substances such as   mineral tanning agents. LEATAN R12 is compatible with synthetic and vegetable tanning agents,   fatliquors, anionic dyes and other anionic substances at the concentrations at which they are    normally applied, provided that the pH is not allowed to fall below 3.8.

►Leathers retanned with LEATAN R12 are soft and full, even if only a small amount is applied,    and the fineness of the grain is not impaired. LEATAN R12 also helps to ensure that the leather    largely retains its typical chrometanned character in spite of it having been treated with vegetable     and synthetic tanning agents. LEATAN R12 improves the distribution of vegetable and synthetic    tanning agents through the cross-section, which has a beneficial effect on the tightness of the   grain and improves the leather’s response to buffing.

►LEATAN R12 is completely lightfast, and it has only a slight lightening effect on the intrinsic   colour of the leather. Leathers retanned with LEATAN R12, especially in combination with   syntans, can be dyed to very level shades. White tanning agents can be used in combination with   LEATAN R12 to increase the whiteness of pale chrome-tanned leathers.  

【Application】    

LEATAN R12can be used to retan full-grain and corrected grain chrometanned leather with the aim of making it softer and fuller and to improve the tightness of the grain. The advantage of LEATAN R12 over conventional retanning agents that are used to enhance fullness is that the fine grain pattern remains intact. The best results can be obtained with LEATAN R12 if it is applied after the neutralization stage. Neutralizing agents with a buffering and masking effect such as Tamol® NA have been shown to perform well here. The exhaustion of LEATAN R12 from the float depends on the pH, and the exhaustion is   usually higher at low pH values.

【Storage conditions】   

Recommended storage temperature:0℃ -40℃.


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