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資質(zhì)榮譽DOWELLTAN NL20
Neutralizing retanning agent
Chemical & Physical Data:
Appearance: Brown liquid
Effective Content/% : 49.0~51.0
pH(10%): 6.0~7.5
Properties:
lDOWELLTAN NL20 has a mild tanning effect; it is noted for its mild, penetrating, de-acidifying effect and high buffering property.
lDOWELLTAN NL20 does not loosen the grain during neutralization and avoid coarsening the grain after subsequent application of vegetable and synthetic tanning agents.
lDOWELLTAN NL20 has a property of good levelling action with minimal shade-weakening effect and improves penetration of anionic dyes, and has a basifying effect on chromium salts. Due to its high buffer properties, it can be used in the same bath of chrome without any risk of precipitations.
lGood light resistance.
Application:
lIn general, 2-4 % DOWELLTAN NL20 (calculated on the shaved weight) is applied in the neutralizing and retanning process, and it is used in dyeing processes to help disperse retanning or vegetable tanning agents and dyes.
Packing:
120L plastic drum
Storage:
1 year storage in sealed original package at 5-35℃. Avoid long-time exposure in the sunlight or freezing environment. Drums should be tightly resealed each time after material is taken from them, and their contents should be used up as soon as possible. Non-dangerous chemical.
