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Common pigments in production of colored rubber products with white latex reclaimed rubber/natural rubber
(1) Inorganic pigments
Among common inorganic pigments for colored rubber products, red pigments include iron oxide red, cadmium red and molybdenum red; yellow pigments include lead chromate yellow, zinc chrome yellow, cadmium yellow, antimony yellow and iron yellow; blue pigments include iron blue and ultramarine; white pigments include titanium white, zinc oxide, zinc barium white (lithopone) and antimony white; black pigments include carbon black, pine smoke black and graphite; green pigments include chromium green, zinc green and iron green; and purple pigments include methyl violet, benzyl violet, etc.
(2) Organic pigments
Among common organic pigments for colored rubber products, red pigments include toluidine red, lithol red, para red and bright red; yellow pigments include fast yellow, benzidine yellow and Hansa yellow; blue pigments include phthalocyanine blue, peacock blue and indanthreve blue; black pigments include aniline black; green pigments include phthalocyanine green; and purple pigments include methyl violet, benzyl violet, etc.
(3) Metallic pigments
Common metallic pigments for colored rubber products include aluminum powder (silver powder) and copper powder (gold powder).
According to the applications and features of rubber products, appropriate pigments must be used for coloring. Otherwise, coloring cannot be performed. The following factors should be considered to select pigments:
(1) Formulas of white series
100 portions of white latex reclaimed rubber/natural rubber and 10-25 portions of titanium dioxide.
(2) Formulas of red series
Bright red: 100 portions of white latex reclaimed rubber/natural rubber and 2-5 portions of bright red. Red: 100 portions of white latex reclaimed rubber/natural rubber, 1.5-3 portions of Lithol Rubine and 5-8 portions of iron oxide red. Pink: 100 portions of white latex reclaimed rubber/natural rubber, 20-30 portions of lithopone, and 0.1-0.3 portions of Vulcan Red. Rose Bengal: 100 portions of white latex reclaimed rubber/natural rubber, 0.15 portions of Vulcan Red and 1 portion of Lithol Rubine.
(3) Formulas of green series
Green: 100 portions of white latex reclaimed rubber/natural rubber and 3-6 portions of phthalein green. Grass green: 100 portions of white latex reclaimed rubber/natural rubber, 10-15 portions of lithopone, 1.5-2 portions of chrome yellow and 4-5 portions of ultramarine. Dark green: 100 portions of white latex reclaimed rubber/natural rubber, 2.5-3 portions of phthalein blue and 2.5-3 portions of phthalein green. Olive green: 100 portions of white latex reclaimed rubber/natural rubber, 2.4 portions of chrome yellow, 0.5 portions of carbon black and 2.5 portions of Lithol Rubine.
(4) Formulas of blue series
Blue: 100 portions of white latex reclaimed rubber/natural rubber, 15-20 portions of lithopone and 1-2.5 portions of phthalein blue. Sky blue: 100 portions of white latex reclaimed rubber/natural rubber, 15-30 portions of lithopone and 0.1-0.6 portions of phthalein blue.
(5) Formulas of yellow series
Yellow: 100 portions of white latex reclaimed rubber/natural rubber, 10-20 portions of lithopone and 0.2-0.5 portions of benzidine yellow. Orange: 100 portions of white latex reclaimed rubber/natural rubber, 0.5 portions of Vulcan Red and 4.5 portions of fast yellow. Beige: 100 portions of white latex reclaimed rubber/natural rubber, 10-20 portions of lithopone and 0.2-0.5 portions of benzidine yellow.
(6) Formulas of coffee color, grey, brown and black
Coffee color: 100 portions of white latex reclaimed rubber/natural rubber, 0.5 portions of benzidine yellow, 4-8 portions of iron oxide red and 0.1-0.5 portions of carbon black. Grey: 100 portions of white latex reclaimed rubber/natural rubber, 15-20 portions of lithopone, 0.2-0.5 portions of carbon black, and 0.1-0.3 portions of ultramarine. Reddish brown: 100 portions of white latex reclaimed rubber/natural rubber, 2 portions of bright red and 3 portions of Lithol Rubine. Black: 100 portions of white latex reclaimed rubber/natural rubber and 8-15 portions of carbon black.
Formulas of other colors
The above formulas for color pastes are for reference. The proportions in these formulas should be adjusted as needed for ideal coloring effects. In addition, attention should be paid to the consistency of paste and uniformity of color.
What are industrial pigments? Industrial pigments are for industrial products. In addition to visible colors in industrial production, they are used for product marking, anticorrosive
What is smalt pigment? Smalt pigments are semi-finished products for handicrafts, collectively known as base smalt. They are made with a variety of raw materials
How to use Titanium Dioxide for Soap Making? Titanium dioxide is a common additive. Titanium dioxide for soap has many advantages, such as color change, brightening, and sunscreen protection. It
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