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1987 (1) TMI 254 - CEGAT, NEW DELHIExtract: ....... slightly basic aqueous formaldehyde solution methylol melamines are formed first. A large molar excess of formaldehyde is commonly used (3 to 6 mol per mol melamine) as a result, a very high functionality (e.g. hexamethylolmelamines) is obtained and, at the same time, the insolubility of the primary and secondary condensation products is enhanced.
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