Test of Organic Pigment
Full shade: based on a shade concentration of 0.2% pigment. White reduction: use standard depth 1/3 (SD 1/3) as white reduction, based on the respective pigment concentration to achieve 1/3 ISD based on 5% TiO2[/accordion-item]
Heat Resistance in PVC-P
Resistance to heat was tested according to DIN 53775, soft calendered sheet were made,put the sheet in 180℃ oven for 30 minutes,and compare with sheet without heating,were assessed using the ISO 105-A03 grayscale (GS) for assessing staining, with GS 5 denoting no migration,GS 1 means poorest immigration.
Heat Resistance In Polyolefins,HDPE,PP,PS,ABS,PET,PC
Resistance to heat was tested according to DIN 12877 at SD 1/3 with 1 % titanium dioxide in the injection molding process. The values quoted are the temperature in ° C at which, after a dwell time of 5 min, a color change equivalent to a ΔE*ab = 3 (DIN 6174) is obtained.
Light fastness (HDPE and PVC-p)
Method 1:Light fastness was determined using Xenon lamp exposure tests in accordance with the equivalent test methods ISO 4892-2. The samples were assessed against the 1–8 Blue Wool Scale which 8 denoting the highest light fastness.
Method 2: Accelerate ageing testing, in accordance with ISO 105 B02,put Sample and Blue Wool Scale in xenon light which 5 times strong than sunlight, cover 1/2 of sample and Blue Wool Scale, till the sample color equivalent to
ISO 105-A03 grayscale (GS) GS 3 degree,then use the Blue Wool Scale to assess light fastness from 1-8.
Fastness to Migration
Migration resistance was determined in accordance with DIN 53775 by direct contact between the colored test sheet and a white, flexible PVC contact sheet. assessed using the ISO 105-A03 grayscale (GS) for assessing staining, with GS 5 denoting no migration.
Weather resistance (HDPE and PVC-p)
Weather resistance was determined using Xenon light exposure tests in accordance with the equivalent test methods ISO 4892-2, assessed using the ISO 105 grayscale (GS) for assessing staining which 5 denoting no migration
Influence on the warping tendency of injection-molded HDPE articles was determined in accordance with ISO 294-4/ASTM D955. assessed using low, high, nt(not tested)
Some Organic Pigments recommended from XINGHUA PIGMENTS GROUP：
Pigment red 48:1 (P.R.48:1)
Pigment orange 13 (P.O.13)
Pigment red 48:2 (P.R.48:2)
Pigment yellow 14 (P.Y.14)
Pigment yellow (P.Y.17)
Pigment yellow (P.Y.83)
Pigment violet (P.V.23)
Pigment violet (P.V.19)
Pigment red 57:1 (P.R.57:1)
Pigment blue (P.B.15:4)
About Xinghua Pigments Group (namely, Shenzhen Xinghua Pigment Masterbatch Co., Ltd.)
As the biggest manufacturer of chemical pigments and solvent dyes of South China, Xinghua Pigments Group has over twenty years of professional experience in the pigments and solvent dyes industries and has been covered almost all the organic pigments, organic solvent dyes, masterbatch, Titanium Dioxide and other relative products.
Besides, Xinghua Pigments Group can offer CUSTOMIZED PIGMENTS AND/OR SOLVENT DYES based on PANTONE.
What is more, it is also the core agents and/or partners of many international chemical giants such as CABOT, BASF, CLARIANT, HUNSTMAN (VENATOR), DIC AND LANXESS. We respect, value and cherish every customer, partner and friend, please join us to build a more colorful world together.
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Xinghua Pigments Group