a) Make a 500-gram lab batch taking the supplied pigment powder by following the B.M.R of respective colors in the lab.
Test the solid, pH, and Viscosity and try to match with B.M.R. when the lab batch is totally matched with the B.M.R mentioned specs for solid, pH & viscosity then take the lab sample for checking for tinting/depth/ strength & tone. In all cases, apply sufficient mechanical stirring to the Bulk Pigment Paste and White pigment paste to ensure full homogenization, before sampling for testing.
Application test for textile Binder
b) Mix 20g + 0.02g of the YORCOL-produced pigment under test with 100g + 0.02g of Standard
YORCOLA-WHITE, in a 250ml, curved-bottomed, glass beaker. Repeat using a sample of the
standard pigment. Make sure that these mixtures have 5000-7000cps viscosity in Brookfield
viscometer in spindle no 62 at 30 R.P.M. Ensure that both beakers are clearly labeled "Standard" or
"Sample".
c) Mix 7g + 0.02g of the lab-produced YORCOL A-WHITE pigment under test with 13g + 0.02g of STANDARD YORCOL A-DEEP BLACK, in a 50ml, curved bottomed, glass beaker. Repeat using a sample of the standard pigment. Ensure that both beakers are clearly labeled "Standard" or "Sample". Use “booted” rods to ensure complete mixing.
d) Clip a White drawdown card onto the coating bed and place a sheet of scrap paper under the card so that the bottom part of the bed is covered. Spot the mixes onto the card as indicated:(The spots should be large enough for the mixes to touch when drawn down.)
a) Using a No. 6 K Bar, draw down the pigment spots to the bottom of the card, keeping a firm
even pressure across the bar.
b) Remove the card from the bed and dry it in a hot (110°C) oven for 2 minutes. Allow the card to
cool for 5 minutes and compare the test pigment with the standard.
WASH THE BAR COATER THOROUGHLY.
c) Test the strength and DE using the spectrophotometer.
d) Record results in the QC Results file.
TESTING METHODS FOR PIGMENT DISPERSIONS & RAW MATERIAL PIGMENT POWDERS
PRODUCT TEST METHOD
TEST NAME: Tinting Strength - PIGMET A-WHITE Pigments
METHOD:
In all cases, apply sufficient mechanical stirring to the Bulk Pigment Paste to ensure full homogenization, before sampling for testing.
a) Mix 7g + 0.02g of the produced PIGMET A-WHITE pigment under test with 13g + 0.02g of PIGMET A-DEEP BLACK, in a 50ml, curved-bottomed, glass beaker. Repeat using a sample of the standard pigment. Ensure that both beakers are clearly labeled "Standard" or "Sample". Use “booted” rods to ensure complete mixing.
b) Clip a White drawdown card onto the coating bed and place a sheet of scrap paper under the card so that the bottom part of the bed is covered. Spot the mixes onto the card as indicated:
(The spots should be large enough for the mixes to touch when drawn down.)
c) Using a No. 6 K Bar, draw down the pigment spots to the bottom of the card, keeping a firm even pressure across the bar.
d) Remove the card from the bed and dry it in a hot (110°C) oven for 2 minutes. Allow the card to cool for 5 minutes and compare the test pigment with the standard. WASH THE BAR COATER THOROUGHLY.
e) Test the strength and DE using the spectrophotometer.
f) Record results on the QC Results file.
Preparation of Protein Precipitation (Bruce's reagent) Solution or Regent
PRODUCT TEST METHOD
TEST NAME: Tinting Strength - PIGMET A-WHITE Pigments
METHOD:
In all cases, apply sufficient mechanical stirring to the Bulk Pigment Paste to ensure full homogenization, before sampling for testing.
a) Mix 7g + 0.02g of the produced PIGMET A-WHITE pigment under test with 13g + 0.02g of PIGMET A-DEEP BLACK, in a 50ml, curved-bottomed, glass beaker. Repeat using a sample of the standard pigment. Ensure that both beakers are clearly labeled "Standard" or "Sample". Use “booted” rods to ensure complete mixing.
b) Clip a White drawdown card onto the coating bed and place a sheet of scrap paper under the card so that the bottom part of the bed is covered. Spot the mixes onto the card as indicated:
(The spots should be large enough for the mixes to touch when drawn down.)c) Using a No. 6 K Bar, draw down the pigment spots to the bottom of the card, keeping a firm even pressure across the bar.
d) Remove the card from the bed and dry it in a hot (110°C) oven for 2 minutes. Allow the card to cool for 5 minutes and compare the test pigment with the standard. WASH THE BAR COATER THOROUGHLY.
e) Test the strength and DE using the spectrophotometer.
f) Record results on the QC Results file.
Preparation of Protein Precipitation (Bruce's reagent) Solution or Regent
PRODUCT TEST METHOD
TEST NAME: Tinting Strength – Pigments Excluding Whites. |
METHOD:
In all cases, apply sufficient mechanical stirring to the Bulk Pigment Paste and White AQ to ensure full homogenization, before sampling for testing.
a) Mix 5g + 0.02g of the PIGMET-produced pigment under test with 25g + 0.02g of
Standard PIGMET A-WHITE, in a 150ml, curved-bottomed, glass beaker. Repeat using a
sample of the standard pigment. Ensure that both beakers are clearly labeled
"Standard" or "Sample".
b) Clip a White drawdown card onto the coating bed and place a sheet of scrap paper under the card so that the bottom part of the bed is covered. Spot the mixes onto the card as indicated:
(The spots should be large enough
for the mixes to touch when drawn down.)
c) Using a No. 6 K Bar, draw down the pigment spots to the bottom of the card, keeping a firm even pressure across the bar.
d) Remove the card from the bed and dry it in a hot (110°C) oven for 2 minutes. Allow the card to cool for 5 minutes and compare the test pigment with the standard.
WASH THE BAR COTTER THOROUGHLY.
e) Test the strength and DE using the spectrophotometer.
f) Record results in the QC Results file.
What are the raw materials for pigments?
The pigment's raw materials are titanium dioxide, carbon black, iron oxide, and others.
What is pigment powder?
Pigment powder is a finely ground powder made from pigments, which are substances used to impart color or modify the color of other materials. Pigment powders are used in a variety of applications, including paints, coatings, inks, plastics, and cosmetics.
What are the 4 types of pigment production color?
The 4 types of pigments power are chlorophylls, anthocyanins, carotenoids, and betalains.
What is the pigment used for?
The pigment used for Paints and coatings, Plastics, Inks, Cosmetics, and Food and drugs.
