Good coloring

The polymer can be vulcanized to give a rubber with very good chemical (solvent) resistance, excellent resistance to aging and weathering, and good color retention in sunlight. 

Acryhc fibers discolor and decompose rather than melting when heated, but they have very good color and heat stabihty at temperatures less than I20°C. In a study by American Cyanamid (using Federal Test Specification TT-P-I4Ia. Method 425.2) the yeUowness of acryhc fiber was measured as a function of temperature. Compared to a value of 0.0 for a pure white body, the original fiber had a yeUowness index of 0.04—0.10. After 30 minutes of exposure at II5°C the yeUowness increased only slightly to 0.II—0.17. After 6 h at I30°C, however, the yeUowness increased to 0.38—0.41. 

Color Matching. Color matching is a process in which a technician prepares a formulation, ie, a mixture of pigments in a desired medium, that has the color effects desired by the customer. A good color match in one medium, eg, plastic, is not always a good match in another medium, eg, ceramic glaze. Thus the medium as well as the processing conditions have to be identical to those used by the customer. 

Experienced color matchers can achieve a good color match by trial and error without using any instmmentation. In some cases, however, this technique can be a lengthy process, and should the desired match be outside the color space defined by the available color standards, the technician might spend too much time just to determine that the match is not possible. To get the most cost-effective match using a low metamerism in the shortest possible time, the use of a computet color matching system is preferable. 

Fabric preparation is often considered to be the most important stage to obtain good color yields, levelness, and brightness on wool fabric (104). This is done almost exclusively by an oxidative chlorination process, the most popular commercial methods using either a batch treatment with dichloroisocyanuric acid (DCCA), or a continuous fabric treatment with gaseous chlorine, called the Kroy process. 

Couleur, /. color caramel, burnt sugar dark, coarse smalt (pf.) fancy goods, colored goods. 

A derivative of 163, 3-(2-morpholinoethylthio)[l,2,4]triazino[5,6-fo]indole dihydrochloride, is used as a thrombolytic (91URP1672373). Derivatives of the pyrazolo[5,l-c][l, 2,4]tria-zines were used as a constituent of silver halide color photographic supported material, which showed good color reproducibility [91JAP(K)03/291649]. The protective action of [l,2,4]triazino[4,3-a]benzimidazoles as corrosion inhibitors was studied (91MI8). 

ABS Good Color changes have been noted (yellow to green). High-impact grades are not as radiation... 

Color Urea, melamine, polycarbonate, polyphenylene oxide, polysulfone, polypropylene, diallyl phthalate, and phenolic are examples of what is needed in the temperature range above 200°F (94°C) for good color stability. Most TPs will be suitable below this range. 

PAC is faster-acting than alum, even in cold water. It produces a compact, fast-settling floe and is effective over a wide range of pH levels (typically 4-9.5). It provides good color removal. 

Sorbitan esters of fatty acids are well known. Similar products can be made from ether carboxylic acids and sorbitol without an acid catalyst with a good color [39]. The advantage of these products is that the hydrophilicity can be adjusted by the polyethylene glycol content in the ether carboxylic acid. 

Whereas nonionic ethylene oxide adducts discolor badly on contact with sodium hydroxide, phosphate derivatives of these nonionics exhibit good color stability even under these conditions. But in the presence of strong acids poly-oxyethylated phosphate esters undergo hydrolysis to the base nonionic and phosphoric acid. However, the free surface-active acids by themselves show little tendency to hydrolyze. They have a pH value of 2 in aqueous solution. 

The combination of highly exothermic reactions with a sharp increase in viscosity as conversion proceeds controls reactor design and operational conditions in full-scale operations. The art of sulfonation is to maintain the optimal reaction temperature and reaction time, resulting in products with small amounts of byproducts and good color. 

Thousands of polyphenols from fruits (grapes, apples, etc.), vegetables (horse beans), and teas have been identified, many having good coloring properties, especially anthocyanins and some flavonoids. Well-documented reviews discuss the coloring capacities of some polyphenols including procyanidins. - Detailed presentations of anthocyanin and flavonoid properties and analysis are included in Sections 2.3, 4.3, and 6.3. The soluble proanthocyanidins of the colored horse bean Viciafaba L. seed coats were isolated and separated by solvent partition. 

These azaphthalides have been reported to give blue or greenish-blue images, together with clay developers, and to have good color forming ability and resistance toward light and moisture. 

If there is one clear need in the field of OLED materials it continues to be in the area of blue emitters. A blue emissive material with good color coordinates CIE (0.10, <0.10) coupled with long device lifetime (>10,000 h) and high electrical efficiency (>5 cd/A) is the holy grail of materials chemists in this field. A major effort to find such materials continues in many laboratories including our own and the current sets of available materials may be supplanted at any time. However, the current best candidate blue emitters in the SMOLED area compromise many desirable properties — the most troublesome being long lifetime. 

Resublimed aluminum chloride is suitable it requires no further grinding. The excess over the required 2 moles assures a complete reaction and a product of good color. 

These lamps show moderately good color rendering properties, the very broad spectrum being one of their main utilities. For instance, high-pressure Xe lamps or deuterium lamps are commonly used in optical spectroscopy techniques. 

The structural chemistry of alkyds has already been covered in Chapter 15, Section 7. Although there are over 400-500 varieties of such resins, they are all polyesters with carbon-carbon double bonds that can be cross-linked. They are very versatile in coatings, and their diverse properties can be matched for particular uses. They are the most widely used resins for protective coatings. Their best points can be summarized as follows (1) easy to apply (2) can have flat, semigloss, or high-gloss finish (3) useful for most surfaces except concrete or plaster (alkaline) (4) good color retention and (5) odorless (some of them). 

Poly(vinyl acetate) dispersions are more sensitive to hydrolysis but have good color retention and resistance to grease and oil. 

You can choose to build your own BISH detection kit from individual reagents from various vendors or to purchase a commercial BISH kit. Selecting a right color combination with good color contrast is a key for successful BISH assay detection. Color blindness is an important factor for deciding a color combination (7, 8). Common color combinations are (I) blue (AP-based detection) and red (AP-based detection), (2) black (HRP-based detection) and red (AP-based detection), and (3) green (HRP-based detection) and red (AP-based detection). 

The molecules creating the colored smoke must be of low toxicity (including low carcinogenicity). Further, they must readily sublime without decomposition at the temperature of the pyrotechnic reaction to yield a dense smoke of good color quality [3]. 

---