Cold water dyes for all natural fibers Discovered late last century, Naphtol is principal dye
used in Batik production in South East Asia. Naphtol dyes
are not sold in the form of a "finished dye" but in form of
their components ( insoluble azo base and fast colour
coupling compound ) which combine on the fibre to produce a
water insoluble azo dye of outstanding fastness properties.
Naphtol are the only truly cold water dyes available to home
dyers which makes them ideal for wax resist (batik)
application. 1. Immersion method - most commonly used in Batik
dyeing 2. Hand painting method (with or without
thickener) 1. IMMERSION METHOD
Naphtol dyes are applied by the means of two baths. The
first bath consists of "Naphtol solution" which impregnates
the cloth with a chemical, which in turn reacts with the
"Diazo solution " in the second bath. This reaction is
instant and
creates the colour. No
further fixation is necessary. The whole dyeing
process takes only a few minutes from start to finish. The
resulting colours are fast to light, washing and
bleaching. NAPHTOL
BATH: 1. Paste 2g (approx. 1 teaspoon) of Naphtol with
small amount of Turkey Red Oil. 2. Add 1/4 litre (1 cup) of boiling water and mix
well, then add 1/4 teaspoon of Caustic Soda (Lye)
flakes. 3. Add enough cold water to make 1 litre. DYEING PROCEDURE 1. Place the cloth into the Naphtol Bath; agitate
gently to ensure even penetration 2. Lift out the fabric and drip off over the dye
bath, and then dip into a bucket of 3. Then, immerse the fabric in the Diazo bath.
Agitate and leave for 2 -3 minutes. 4. Rinse in cold water. NOTE: After all dyeing is completed, immerse the fabric
in soapy boiling water for a couple of minutes to eliminate
excess dye and to stabilize the colour. Some Diazo e.g.
Orange GC will abruptly change colour from pale red to
orange in boiling water. AFTER THE DYE BATHS HAVE BEEN PREPARED, THEY ARE GOOD FOR
MANY DYEINGS WITHIN A PERIOD OF ABOUT 6 HOURS, PROVIDING
THEY ARE KEPT AWAY FROM DIRECT SUNLIGHT. 2. HAND PAINTING
METHOD Naphtol bath 1. Paste 2g (approx. 1 teaspoon) of Naphtol with
small amount of Turkey Red Oil. 2. Add 1/4 litre (1 cup) of boiling water and mix
well, then add 1/4 teaspoon of Caustic Soda 3. Add enough cold water to make 1 litre. 4. Place the cloth into the Naphtol Bath; agitate
gently to ensure even penetration of the dye. 5. Lift out and hang to dry away from light - best
done late evening and left to dry in dark. Diazo painting solution Mix 1 tablespoon (6 gr) Diazo in 1 glass of water. 1. Once a
Diazo has been applied and a colour created, no
other Diazo will react in the same spot. Meaning
you can freely apply red colour next to blue - they
will not mix, the edges of touching colours will be
well defined. 2. Colours
created by Naphtol Dyes are resistant to bleach
making them ideal for use in production of hand
painted tablecloth, bed sheets etc. Hand painting method is at its best for multi coloured
tie-dyeing. Naphtol Dyes are the cheapest (up to 40%) to use
in comparison with Reactive Dyes (Procion, Drimarene-K,
Remazol etc.). Any Naphtol will react with any Diazo and
produce a colour. There are thousands of colours and hues
that can be created by using different combinations of
Naphtol & Diazo. Do not get confused with so many Naphtols:- Naphtol G is "Yellow" Naphtol and combination with any
Diazo only produces a variety yellow colour. Naphtols D, AS, BO, TR, OL, BS & RS will produce all
other colours. Orange hues with Diazo Yellow GC, Diazo Orange GC &
RD SAMPLES FOR DISPOSAL COMBINE
REMAINING NAPHTOL & DIAZO BATHS WHICH WILL NEUTRALIZE
EACH OTHER. Automatic
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They are suitable for dyeing of Cotton, Silk &
Rayon.
Naphtol dyes can be applied by two methods:
DIAZO BATH:
Mix 6g (approx. 1 table spoon) of Diazo with a little cold
water then add more cold water to make a total of 1
litre.
You'll need 3 containers - one for Naphtol , one for
intermediate rinse and one for Diazo.
If you need a darker
colour simply repeat the dyeing process
of the dye. Leave for 2-3 minutes.
salty water (use 1 tablespoon of cooking
salt per litre of water) + 1/2 teaspoon
of caustic soda
(lye). This is to stop excess of Naphtol
polluting the Diazo bath.
(Lye) flakes.
Leave for 2 -3 minutes.
Then stretch (Naphtolated) cloth on frame and paint
on or spray the Diazo solution.
Colour appears instantly and does not require any other
fixation.
You can achieve multicoloured dyeing in the space of 5
minutes by applying different Diazo on the same cloth.
What
makes Naphtol Dyes from any other dyes is:
Diazo Black K
(Brenthamine K) is a special dyeing salt.
Applied over any material dyed with fibre reactive dye,
it will react with it and produce black colour.
Naphtol BT is "Brown" Naphtol producing a variety of earthy
brown colours.
Naphtol BR is "Brown" Naphtol producing a variety of reddish
brown
Naphtol SR is "Black" Naphtol producing black in combination
with Red B Diazo
Naphtol GR is "Green" Naphtol and is generally used in
combination with Blue BB Diazo for bottle green
Naphtol ITR produces earthy/reddish colours.
Different Naphtols produce different hues of same colour.
For example:-
Red hues with Diazo Red RC, AL, 3GL or B
Blue hues with Diazo Blue BB, 3B or GC
Violet hues with Diazo Violet B
Green with Diazo Green BB or GT
Black with Diazo Black B, K or GT.
When starting to use this fascinating dye, it pays to keep
samples and make your own colour chart, detailing Naphtol
and Diazo combinations, which should be kept for your future
reference. Always dye samples of different materials
together, as Naphtol will dye each fabric a slightly
different shade or tone. Keep in mind that Naphtols trend to
dye silk to much stronger shade in comparison with cotton.
It is imperative to test strength before applying to your
work as there is no remedy or possibility of removing wrong
colour or shade.
IT IS THEN SAFE TO DISCARD.
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NEEDED: Indigo, Caustic Soda , Sodium Hydrosulphite 1. Dissolve 25g (0.8oz) Caustic Soda (lye) in 500 ml of cold water. Use a small amount of this liquid to paste 50g of Indigo and then add the balance of solution. 2. Take 40g (1.5oz) of Sodium Hydrosulphite and sprinkle on top of Indigo mixture. Leave to stand for 20 minutes, making sure that the temperature of the "vat" remains within 70-80 C (160-180F). 3. Pour this mixture slowly into 5 litre (1.3 gal) of water at 20 C (68F) The cloth should be immersed into the "vat" slowly and
without agitation. The depth of shade will depend largely on
the immersion time - deepest shade is achieved after approx.
15 minutes. Longer immersion or repeated dyeing will not
result in deeper shade. As soon as the cloth is exposed to the air, it will start changing colour from green to dark blue. Leave to hang for 10-15 minutes then rinse. The vat remains good for 2-3 days providing that the crust that forms on the top is not disturbed, which would admit too much oxygen and kill the vat. It is helpful to occasionally sprinkle some Sodium Hydrosulphite to reactivate the crust. |
TRANSFER PRINTING The process consists of painting the design onto paper by
any method. After the paper has dried, the design is placed
face down onto the fabric and then subjected to heat and
pressure. The painted dye sublimates (changes from solid to
vapour), under the heat and is absorbed by the fibre. The
final result is very brilliant colour, fast to light and
washing. Although the colours, as they appear on the paper after
it has dried, are dull and uninteresting, the colour on the
fabric will be brilliant - so remember that true colour
appears only after absorption into the fibre. Almost any
paper can be used for your design; though best results are
obtained by using thin, nonabsorbent paper with a shiny
surface e.g.. Litho paper. The success of transferring the design onto fabric will
depend largely on the type of heating equipment used. Best
results will be achieved with a transfer press or, for
example, an Elna press or similar. However, a simple iron
can be used providing it does not have steam holes, as the
holes would appear on the fabric as polka dots unless the
iron is constantly moved. Every possible technique can be used to create texture
variations on the fabric ... collage of preprinted paper,
placing objects under the fabric, placing a leaf between
fabric and preprinted paper would give a clear silhouette of
the leaf, etc. SUITABLE FABRICS for printing are Polyester, Orlon, and
Nylon. Prints can be made even on clear plastic sheeting.
The dyes have NO affinity for natural fibres, but mixtures
containing at least 65% synthetic can be dyed. METHOD: Paste the dye with just enough boiling water to
dissolve it. Then add cold water to required strength. There
are no set rules as to how much water should be used,
however, as a guide, 10g per 100 ml will give full intensity
and 3g per 100 ml will produce pastel shades. Dyes can be
thickened with DR-33 paste (do not use Manutex as it is not
suitable), for silk screen printing and painting. Thickened
dye produces sharper clear lines. It must be remembered that
every nuance of texture, however insignificant, will be
faithfully reproduced during heat transfer. To prepare your transfer bed by placing several sheets of
newspaper onto a firm surface, covering the last layer with
a clean sheet of paper. Place your fabric on top of paper
and place the painted design FACE DOWN on the fabric. Cover
with another thin sheet of paper. Pre heat iron on wool
setting - 200C (390F) and press slowly, remaining at the
same spot for 20-30 seconds. Make sure the design does not
move by taping it to the edge of the fabric. Any movement
will result in a fuzzy image. It is a good idea to check if
the transfer is taking place by carefully lifting a corner
of the printed sheet. If complete transfer has not taken
place, continue ironing till you are satisfied with the
results. The dye is now firmly and permanently fixed to the
fabric, and there is no further treatment required. After
printing, some dye remains on the paper, and it is possible
to reprint the same design again, the colour becoming paler
after subsequent printing. DYEING LENGTH OF FABRIC: The fabric is dyed at boil. Weigh the material and use
25-50g of dye (lower amount for paler shade) and minimum of
15 litre water for 1 kilo of fabric. METHOD: Paste dye in little boiling water then adds
balance of water. Add 3% Polysol Carrier (300 ml per 1 kilo
of material) Immerse material and slowly bring to boil. Dye
for 30-60 minutes depending on depth on required depth of
shade. Rinse material in cold water.
This extremely easy process for decorating fabric with
brilliant colours is nonpolluting, safe, and does not
require either fixing agents or rinsing. The fabric remains
supple and retains its original feel. These dyes offer great
flexibility of application: the design can be applied by
brush using water colour technique, fine writing pen,
roller, printing block, and silk screen method.
Direct dyes for Cotton,Viscose, Silk and Nylon
Strong dyes- require only cooking salt and very hot or
boiling water for easy dyeing. SOLAR dyes are used on
cellulose fibers such as cotton, rayon, and linen. They lack
the permanence of the cold water fiber reactive dyes which
most serious dyers prefer for use on cellulose fibers, but
in some cases they have advantages that make their use
worthwhile. For example, while many of the direct dyes are
not very lightfast, there are some dyes in the class that
may be more lightfast than similar shades of fiber reactive
dyes. All direct dyes do perform rather poorly with respect
to washfastness. Without an appropriate after-treatment,
direct dyes bleed a little with every washing, losing their
brightness and endangering other clothes washed in the same
load. However, there are special after-treatments which may
be used to solve this problem. (Vinegar is not among them!
In spite of claims you may see to the contrary, you cannot
use vinegar to set any dye on cotton or other cellulose
materials.) A product named DYEFIX (30 ml per litre of
water), which is an ionic bulking agent which essentially
"glues" the dye into the fiber, works very well to make
fabric dyed with direct dyes washable without bleeding of
the dye. These dyes are principally used for dyeing articles for
"markets", curtains and theatre productions. 100 gram will
dye 4 kilo (9 lb.) of dry fabric to dark shade. Solar BLACK
is one of the best black dyes available for cotton
dyeing.
RECIPE NEEDED: Dye, Cooking salt (dissolve before adding to dye
bath), Boiling water Each kilo (2.2lb) dry material requires between 15 - 20
litre (4 -5 gallons) of water. Ideally the fabric should be
dyed at boiling temperature for 30 minutes, however if that
is not possible, the dyes will perform adequately in very
hot water. It is also possible to dye relatively cold water
providing the material is left in the dye bath for 8
hours. For paler colours, just add more water. For tie-dyeing,
maintain temperature as high as possible during the entire
dyeing. NB. Black should be dyed at 50-60° C only, and NO
salt should be used with Scarlet !!
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Nylon is dyed for 30 minutes at the boil.
Rinse material under cold running water until water runs
almost clear.
Vat dyes are insuluble in water, and to be able to be
applied to the cloth must be first "reduced" to leuko form
with the aid of Caustic Soda and Sodium Hydrosulphite. To
complete the dyeing, vat dyes have to be converted back to
their insouluble form. This is done by simply hanging them
"oxidise" in the air. Vat dyes have extremely high wash and
boil fastness. REQUIREMENTS: 270g Caustic Soda (Lye) Preparation Sprinkle 270g Caustic Soda over 1 litre of cold water and
leave to dissolve. Bottle and safety label - this solution
is corrosive. This solution is called "loog" Vat preparation 1. Paste 17g dye in little hot water then add 80ml hot
water at 60C° , add 17 g Sodium Hydrosulphite an leave
it to "vat" for 15 minutes. 2. Meanwhile make another vat consisting of; Now add the dye mixture from the first vat to the second
vat. Immerse material and dye for 10-20 minutes, depending
on depth of shade required. Rinse in cold water and hang out to oxidise.
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Important practical propery is that they can be appied over
material dyed with fibre reactive dyes, partly or completely
stripping them thus creating multiple layered dyeing. Very
effective for Shibori technique over fibre reactive
(Drimarene-K ) dyes.
1 litre cold water
15 litre hot water
17g Vat Dye
62g Sodium Hydrosulphte (Hydros)
14.2 litre of water with temperature anything between 30 -
60C°
45g Sodium Hydrosulphite
45ml "loog"