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Coating Color Preparation

Fig. 7.12 Schematic flow of coating color preparation (source Omya). Fig. 7.12 Schematic flow of coating color preparation (source Omya).
Makinen, M. (1999). Coating color preparation, in Pigment Coating and Surface Sizing of Paper, E. Lehtinen, ed.. Book 11 in the series Papermaking Science and Technology, Fapet Oy, Helsinki, Finland, pp. 319-388. [Pg.1244]

Additives are all formulation constituents other than the active ingredient. Although additives could be classified into excipients and vehicles (excipients for solid preparations and vehicles for liquid ones), there are several other agents used in pharmaceutical formulations with specific functions such as preservatives, sweeteners, coatings, colorants, antioxidants, surfactants, emulsifying agents, and flavors. Since they comprise a vast amount of products, this section will deal with additives for compounding pharmaceutical products for internal use only [17,18]. [Pg.467]

Pregelatinized starches are formed when a dispersion of starch is dried on a heated roll or in a hot air (flash) drier. Added surfactants will aid in rewetting. The use of a pregelatinized starch simplifies the preparation of coating colors, but this practice is restricted due to higher cost and difficulties in obtaining a homogeneous product. [Pg.665]

Suspensions of polyacetylene were prepared as burrs or fibers (46) by using a vanadium catalyst. When the solvent was removed, films of polyacetylene were formed with densities greater than that prepared by the Shirakawa method. These suspensions were mixed with various fillers to yield composite materials. Coatings were prepared by similar techniques. Blends of polypyrrole, polyacetylene, and phthalocyanines with thermoplastics were prepared (47) by using the compounding techniques typically used to disperse colorants and stabilizers in conventional thermoplastics. Materials with useful antistatic properties were obtained with conductivities from 10" to 10" S/cm. The blends were transparent and had colors characteristic of the conducting polymer. For example, plaques containing frans-polyacetylene had the characteristic violet color exhibited by thin films of solid trans-polyacetylene. [Pg.281]

Dr, Deuel. The usual commercial preparations of locust bean gum are powders, mainly prepared by a milling process. These preparations always contain some insoluble substances from the seed coat, coloring material, etc. In order to obtain very pure gum, extracts can be prepared. This is necessary for scientific investigations and may be valuable for special uses in medicine and in the food industry. The... [Pg.60]

Schlossman, D. Shao, Y MazzeUa, F. Quinn, C. Preparation and cosmetic use of duplex coated color lake and other powders. U.S. Pat. Appl. Publ. US 2005037041, 2005 Chem. Abstr. 2005,142, 225265. [Pg.19]

Soybean protein is a very important binder type, especially in North America. It has properties very similar to those of casein. Isolated soybean proteins are hydrolyzed, isoelectric proteins. They are used in the form of alpha and delta proteins with four different viscosities (extra low, low, medium, and high). The viscosity refers to the dissolved soybean protein, the solvent of choice being aqueous ammonia (26 Be). Proteins dissolved in this way exhibit very low sensitivity to water after drying. like casein, soybean protein is mostly used as a mixture with polymer dispersions. This combination permits the preparation of coating colors with high sohds content and a relatively low viscosity. Solids contents ofca. 60%, suitable for blade coaters, can be achieved. [Pg.109]

Fig. 7.21 Batch preparation of coating colors (source Metso). Fig. 7.21 Batch preparation of coating colors (source Metso).

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