BLOCCANTE 496
Reserving agent for protein and / or polyamide components mixed with cellulosic or artificial fibers, usable in an acid
bath.
Improves wet fastness on polyamide fibers and wool dyed with acid dyes.
Chemical-Physical Characteristics
CERTIFICATIONS
ZDHC 3, ECO PASSPORTIonic charge
Anionic
Physical aspect
Brown liquid
pH (5% solution)
8 ± 1
Solubility
Miscible in any ratio with water, even cold
Stability
Stable to slightly acidic and alkali baths. With acetic acid conc. react and subsequently dissolves by agitation.
Precautionary rules
Avoid direct contact between BLOCCANTE 496 and concentrated acids.
Dosage
Dyeing of wool fiber and polyamide:
It is an excellent dyeing agent for polyamide fibers in the presence of 1: 2 type complex metal dyes.
The dosages vary from case to case, depending on the shade of the dyes and therefore the percentages of the dyes used: on average
they are between 2 and 3% fiber weight.
Dyeing of wool and / or polyamide with cellulosic fibers:
It is a specific reservoir for dyeing called “mezzalana” as it avoids the rise of direct dyes on the wool or polyamide fibers.
The doses of use are between 1 – 5% fiber weight. a second percentage of the colors used.
For a light color, 3% fiber weight. is usually recommended.
Post-treatment of protein and / or polyamide fibers:
BLOCKER 496 is useful for increasing the wet fastness of acid dyes made on wool or polyamide.
The dyed and rinsed material is briefly treated with 3 – 7% BLOCCANTE 496 by adjusting the pH to approx. 4.5 with acetic acid at
ordinary or lukewarm temperature for about 20 ‘.
Properties
Riservante delle componenti proteiche e/o poliammidiche in mista con fibre cellulosiche o artificiali, utilizzabile in ambiente acido.
Migliora le solidità ad umido su fibre di poliammide e lana tinte con coloranti acidi.
Applications
Dyeing of wool fiber and polyamide:
It is an excellent dyeing agent for polyamide fibers in the presence of 1: 2 type complex metal dyes.
The dosages vary from case to case, depending on the shade of the dyes and therefore the percentages of the dyes used: on average
they are between 2 and 3% fiber weight.
Dyeing of wool and / or polyamide with cellulosic fibers:
It is a specific reservoir for dyeing called “mezzalana” as it avoids the rise of direct dyes on the wool or polyamide fibers.
The doses of use are between 1 – 5% fiber weight. a second percentage of the colors used.
For a light color, 3% fiber weight. is usually recommended.
Post-treatment of protein and / or polyamide fibers:
BLOCKER 496 is useful for increasing the wet fastness of acid dyes made on wool or polyamide.
The dyed and rinsed material is briefly treated with 3 – 7% BLOCCANTE 496 by adjusting the pH to approx. 4.5 with acetic acid at
ordinary or lukewarm temperature for about 20 ‘.
Additional info
The above information is only indicative and without any guarantee on our part for use. Please contact our technicians for assistance
and for anything not mentioned in this document. The data contained in this sheet are not to be considered specific.
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