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condensation
(redirected from Condensation reaction)

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condensation

Conversion of a vapour to a liquid. This is frequently achieved by letting the vapour come into contact with a cold surface. It is the process by which water vapour turns into fine water droplets to form a cloud.

Condensation in the atmosphere occurs when the air becomes completely saturated and is unable to hold any more water vapour. As air rises it cools and contracts – the cooler it becomes the less water it can hold. Rain is frequently associated with warm weather fronts because the air rises and cools, allowing the water vapour to condense as rain. The temperature at which the air becomes saturated is known as the dew point. Water vapour will not condense in air if there are not enough condensation nuclei (particles of dust, smoke, or salt) for the droplets to form on. It is then said to be supersaturated. Condensation is an important part of the water cycle.

condensation

In organic chemistry, a reaction in which two organic compounds combine to form a larger molecule, accompanied by the removal of a smaller molecule (usually water). This is also known as an addition–elimination reaction. Polyamides (such as nylon) and polyesters (such as Terylene) are made by condensation polymerization.



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? Mentioned in ? References in periodicals archive
 
Also, the reaction with the surface must be reasonably competitive with the intramolecular silane condensation reaction, or the silane will be consumed in forming the siloxane network without the anchor to the surface.
Past, present and future of organosilane treatments for fillers by Thomas, Bryan / Rubber World
These organosilane intermediates, in the absence of substrates such as silica or similar minerals, or in the absence of hydroxyl-, amino- or carboxylic acid-containing organic compounds, undergo a complex series of hydrolysis and self condensation reactions leading to dimers, trimers, tetramers and ultimately oligomers and polymers designated as silsesquioxanes, [RSi[O.
Chemistry of silanes: interfaces in dental polymers and composites (1) by McDonough, Walter G. / Journal of Research of the National Institute of Standards and Technology
Furans--These two-part systems cure by a condensation reaction in which water is produced as a by-product of the reaction.
Benchmarking the nobake binder systems by Archibald, James J. / Modern Casting
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