New chromium free tanning agen®♦t
DEMARTAN PG does not contain free formaldehy☆§de, environmental performance in line "<with EU standards. DEMARTAN PG is v™εery suitable for pre-tanning and re-tanning of∞α leather requiring soft fγ €inished leather.
Keywords: New chromium f ♥ree tanning agent
Classification:
Product Description
Product parameters
Appearance: White powder
Active ingredient: 70 ± 2%
PH value: 8.5-9.5 (1%↔> aqueous solution)
Solubility: Easily soluble in water
Ionic: Anionic
Product performance
DEMARTAN DAP is a new type of chromium f↔ ree, metal free, and al βdehyde free polymer tanning ag→'✘αent used for tanning all environmentally friendl$>y white wet leather.
The shrinkage temperature of DEMARTAN↑§↕≈ DAP tanned white wet skin can r★←each 85 ℃.
DEMARTAN DAP tanned white wet lea≥♦$ther has a white, plump, and soft color, a♥↓♣nd is well compatible with other retanning, ®∏¶filling, and fatliquoring materials.
DEMARTAN D A P is an environmentally frie≤€♦ndly tanning agent, and the tanned prγ∏≤oducts comply with EU standards.
Application reference:
1. DEMARTAN DAP White Wet Leather Tannin÷¶€g Reference Dosage: 5-8%
2. DEMARTAN D A P is in an alkaline♣€ state (pH: 8.0-9.5) during tanning, ""←and oxalic acid, formic<® acid, or our company should λ✘₹be used for neutralization
Neutralize organic acids such as DEMARLAL EA/Eλ₩λ B to pH 4.2-5.0 for ♥≥£filling and fatliquoring op♣↓₽δerations.
3. Process examples:
The tanning process of sheep white wet s≈★→¥kin
Sheep acid skin - degreasing: liβ✘quid ratio of 1.5. 7-8 BE ° sal✘<t or sodium formate solution added: 1% B/₹∞∞116:1% for 60 minutes - deacidi↓©"fication: baking soda 2% ±/soda ash § 1.5% ± added in batches (to pH 7>φ±.5-8.0) - pretanning: add DAP1%, rota₹♣¶te for 2 hours and stλαop overnight - wash with water. Tanning:& Add 0.8% DAP3 and rotate for ♥< 1 hour. Add DAP3% and rotate for 6->₩8 hours. Heat water at 100% internal temperat€↑ure of 38 ℃ and rotate for 4↕↓$↔ hours. Add 0.2% anti mold age ≠∏nt and wash for 2 hours to remove the drum. Let <>≠↓it stand for at least 48 hours.
Packaging and storage
25kg composite paper bag;
Stay away from moisture, avoid direct sunlighΩ≥t, maintain original ™γ>packaging and reasonable storage me₹ thods at 5-40 ℃, with a shelf>©★ life of 12 months.
This product is non dangerous goods and is ♦®$stored and transported as ordin₹↕ε₹ary goods.
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Zhenjiang Daysun New♥ ₩φ Materials Technology Co.，Ltd.
Address: No.3 Liangshan Road, New Material ±✔εδIndustrial Park, New ÷♠District, Zhenjiang City, Jiangsu Province
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