Fusible solids

While they are called resins, they are really monomers to low-molecular-weight oligomers, liquids to soluble fusible solids, with high reactivity in the epoxy rings, and fair reactivity in the internal hydroxyl groups. They are cured most often by room-temperature reaction with polyamines or polyamide amines. 

At the same time, the aryl silicones of high R/Si ratio are brittle vitreous soluble fusible solids, which actually are supercooled liquids. By themselves they are too brittle and weak for coating or impregnation. 

Arsenic pentasulphide—As.S,—310—is said to have been formed by fusing a mixture of As.S, and S in proper proportions, ns a yellow, fusible solid, capable of sublimation in absence of air. There exiH well-dehiied sutphnvseuaies, p>TO- and meta sulpbui senates,... 

It is a yellow, fusible solid, capable of sublimation in absence of air. There exist well-defined sulfarsenates, pyro- and meta-sulfarsenates. 

Carbon does not directly unite with chlorine but when chlorine is made to act on certain oiganic compounds, which are decomposed by it, the carbon being presented to it in the nascent state, combines with the chlorine. There are several chlorides of carbon 1. Dichloride of carbon C Cl. A white solid fusible and combustible body. 2. Protochloride of carbon, C Ch, a liquid, boiling at 160". 3. Perchloride of carbon, C, Cl j. Avery fusible solid, boiling at 360 , combustible. None of these compounds have any practical interest. 

The protoiqdide of tin is a brownish-red fusible solid, dissolving in water the periodide forms silky yellow crystals. 

Ternary complexes of the above type are generally viscous oils or fusible solids of light yellow to red colour characterized by high specific gravity ( 2 g/cm and high electrical conductivity Their stability increases as the basicity of the hydrocarbon and the acidity of the system HY -H MY increase. In case the hydrocarbon remains the same in all the complexes the stability of the latter changes as follows (cf -... 

Boron trisuli ide occurs generally as a whit g aaey, fusible solid, but it is sometimes obtained in the form d silky needles. It melts on heating, and can be distilled in a current of sul phuretted hydrogen. It is at once decomposed in contact with water udth formation of boric acid and sulphuretted hydrogen... 

Gee MA, Olsen I (1996) Battery with fusible solid electrolyte. US Patent 5534365... 

Natural resins are generally described as solid or semisolid amorphous, fusible, organic substances that are formed in plant secretions. They are usually transparent or translucent yeUow-to-brown colored, and are soluble in organic solvents but not in water. The principal uses for natural resins are in varnishes, printing inks, adhesives, paper size, and polymer compositions. The term natural resins includes tree and plant exudates, fossil resins, mined resins, and shellac. They often have been altered from their original state during isolation and processing. For some appHcations, the resins have been chemically modified to increase their industrial utiUty. 

Soluble core molding The soluble core technology (SCT) is called by different names such as soluble fusible metal core technology (FMCT), fusible core, lost-core, and lost-wax techniques (3). In this process, a core [usually molded of a low melting alloy (eutectic mixture) but can also use water soluble TPs, wax formulations, etc.] is inserted into a mold such as an injection molding mold. This core can be of thin wall or solid construction. 

Both shape and design details are heavily process related. The ability to mold ribs, for example, may depend on material flow during a process or on the flowability of a plastic reinforced with glass. The ability to produce hollow shapes depends on the ability to use removable cores, including air, fusible or soluble solids, and even sand. Hollow shapes can also be produced using cores that remain in the product, such as foam inserts in RTM or metal inserts in IM. 

Baekeland had to make important discoveries before he could bridge the gap between the initial concept and final products. In particular, he found that the base-catalysed condensation of phenol and formaldehyde can be carried out in two parts. If the process is carefully controlled, an intermediate product can be isolated, either as a liquid or a solid, depending on the extent of reaction. At this stage, the material consists of essentially linear molecules and is both fusible and soluble in appropriate solvents. When heated under pressure to 150 °C, this intermediate is converted to the hard, infusible solid known as bakelite . This second stage is the one at which the three-dimensional cross-linked network develops. 

Coal Char Coal char is, generically, the nonagglomerated, non-fusible residue from the thermal treatment of coal however, it is more specifically the solid residue from low- or medium-temperature carbonization processes. Char is used as a fuel or a carbon source. Chars have compositions intermediate between those of coal and coke the volatile matter, sulfur content, and heating values of the chars are lower, and the ash content is higher, than those of the original coal. 

The product decomposes on sublimation forming mercury(ll) chloride, ammonia, and nitrogen. However, in the presence of ammonium chloride, the same reaction with ammonia with HgCb in aqueous solution yields fusible white precipitate, (NH3)2HgCl2. Similar product also is obtained by reaction of gaseous ammonia with solid mercury(II) chloride. However, the solid mer-cury(II) chloride is more stable than the above infusible product and can be melted without decomposition. 

The common metals gold, silver, lead, copper, tin, iron, being similar from so many points of view, were from an early period considered as minerals especially closely related. Their fusibility their cooling again to the same solid condition the fact that they could be melted together to form other kinds of metal (alloys) their malleability either in the cold or at furnace heat their adaptability to so many common uses, coins, statues, jewelry, tools, etc. easily gave rise to the idea that they possessed a constitution more alike than was the case with minerals... 

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