Coating Terms

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Description
Melamine formaldehyde resins modified by reacting with butanol. Butylated melamine formaldehyde resins are widely used because of their compatibility and high film quality due to their comparably low surface tension. However, they are not used in high solid systems because of their high molecular weights.
Reactive gas obtained by catalitic oxidation or dehydrogenetion of methanol


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Basic structural unit used in production of various resins such as melamine formaldehyde, urea formaldehyde, phenol formaldehyde etc.
Chemical formula:
Boiling point: –21°C
See Also Paraformaldehyde
Monomeric melamine formaldeyde subjected to complete etherification with methanol. Its low molecular weight and solubility in both water and organic solvents enables its usage as high solid content coating input. Because it is completely etherified, acid catalysts need to be added to the coating formulations in order to enhance the reaction tendency, which is lower compared to butylated melamine formaldehyde resins.
Polymerization products of melamine and formaldehyde. They are the most common cross linkers in baking systems. Melamine formaldehyde resins are modified with various alcohols to increase solubility in paint solvents and compatibility with polymers.
A polymer consists of 10 to 100 formaldehyde units. Not only the hazardous effects to human health and environment but also the difficulties in processing and storing of formaldehyde gas leads to paraformaldehyde use in formaldehyde resins. Paraformaldehyde decomposes into the formaldehyde at nearly 150°C.
Chemical formula:
Polymerization product of urea and formaldehyde. Commonly used as adhesives. In addition, they are used as cross-linker in alkyd and polyester baking systems.