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Melamine resin or melamine formaldehyde (also shortened to melamine) is a resin with melamine rings terminated with multiple hydroxyl groups derived from formaldehyde. This thermosetting plastic material is made from melamine and formaldehyde . [ 1 ]
Melamine is mainly used in the chemical industry, but it can also be used in making cakes." [57] Shandong Mingshui Great Chemical Group, the company reported by the New York Times as producing melamine from coal, produces and sells both urea and melamine but does not list melamine resin as a product. [58]
In 1938, melamine thermosetting resin was developed by American Cyanamid Company. It resisted heat, abrasion and moisture better than phenolic or urea resins and could be used to make more colors; soon after, the Formica Corporation was buying the entire output of melamine from American Cyanamid.
Left: individual linear polymer chains Right: Polymer chains which have been cross linked to give a rigid 3D thermoset polymer. In materials science, a thermosetting polymer, often called a thermoset, is a polymer that is obtained by irreversibly hardening ("curing") a soft solid or viscous liquid prepolymer (). [1]
A well known triazine is melamine (2,4,6-triamino-1,3,5-triazine). With three amino substituents, melamine is a precursor to commercial resins. Guanamines are closely related to melamine, except with one amino substituent replaced by an organic group.
Adding urea to MF resins has been shown to lower the amount of free formaldehyde below the legal limit and is often used for this purpose. [1] Another complication with MF resins is the low solubility of melamine in water. [16] Because of this and the free formaldehyde content, MF resins are not used as commonly in the field of wood modification.
Melamine-formaldehyde resins are used for plastic laminating. Urea-formaldehyde resin condensates Cured melamine resin structure Furan resin prepolymers made from furfuryl alcohol , or by modification of furfural with phenol , formaldehyde ( methanal ), urea or other extenders, are similar to amino and phenolic thermosetting resins in that cure ...
Ion-exchange resins are used in water purification and catalysis of organic reactions. (See also AT-10 resin, melamine resin.) Certain ion-exchange resins are also used pharmaceutically as bile acid sequestrants, mainly as hypolipidemic agents, although they may be used for purposes other than lowering cholesterol.