In these years, apart from developing and producing new organic dyestuff of high applied quality, the many manufacturers at home and abroad have laid more stress on the surface treating of the existed products, adding or giving new applied qualities on the purpose of meeting new needs, there is abroad a variety of methods with the organic dyestuff surface treating.
This paper developed a recipe of color master - batch for polyethylene ( PE) casting film, comprising rutile (TiO2), macromoleeule organic dyestuff, nanometer CaCO3, high molecular dispersant, ethylene - vinyl acetate copolymer resin and compound carrier. The technologies for making and dispersing the fine dyestuff were discussed and the effects of the nanometer CaCO3 on mechanical and thermal properties of the color master - batch were studied.
The photochemical modifications induced in the UV ablation of molecular substrates are examined in model systems of polymer films (PMMA) doped with a highly photosensitive organic pigment (1-iodonaphthalene).
The ancient Maya combined skills in organic chemistry and mineralogy to create an important technology - the first permanent organic pigment.
The effect of organic pigment on the grinding of calcium carbonate
The addition of sufficient amounts of organic pigment to calcium carbonate retarded the calcite-aragonite transition of calcium carbonate.
This was explained by the assumption that the surface of calcium carbonate was covered with organic pigment and its lubricating action interfered with that transformation.
The capabilities of the proposed procedure are demonstrated by solving the crystal structures of a number of organic pigments (PY111, PR181, Me-PR170).
Among others, Prussian blue, ultramarine blue, carbon black, chrome yellow, yellow ochre, red lead, red iron oxide, burnt Sienna, indigo blue, chrome orange, phthalocyanine green, and some other organic pigments, were determined in the specimens.
Inks used for printing paper and cardboard are dispersions of synthetic organic pigments in a bonding agent system built up essentially of resins, vegetable oils and high-boiling-point mineral oil products (b.p.
Simple diffuse reflectance UV-vis spectroscopic determination of organic pigments (fringelites) in fossils
To screen for organic pigments, like fringelites or porphyrins, in sediments and fossil specimen, a simple diffuse reflectance UV-vis spectroscopic determination was developed.