Hydroxymethylated melamino-formaldehyde resin, preparation method and application thereof

A technology of methylolated melamine and formaldehyde resin, which is applied in the field of preparation of methylolated melamine-formaldehyde resin powder, can solve the problem of reducing the methylol content of methylolamine resin, difficult to separate methylolamine resin, and high yield Only 30% of the problem, to achieve the effect of enhancing mechanical properties, easy to popularize, and suppress droplet
CN110627979AInactive Publication Date: 2019-12-31XIHUA UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
XIHUA UNIV
Publication Date
2019-12-31
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to the technical field of fine chemicals and flame-retardant materials, in particular to a preparation method and application of hydroxymethylated melamino-formaldehyde resin powder. The preparation method of the hydroxymethylated melamino-formaldehyde resin includes the steps of: (1) firstly adding melamine and a formaldehyde solution into a reaction container, then adding distilled water to keep the solid content of the system at 10-50%, then controlling the reaction temperature at 40DEG C-95DEG C, and carrying out stirring reaction for 0.5-6h; (2) at the end of the reaction, freezing the reaction container containing the reaction solution to convert the reaction solution into a solid reactant; and (3) finally, drying the obtained solid reactant to obtain the hydroxymethylated melamino-formaldehyde resin powder. The hydroxymethylated melamino-formaldehyde resin prepared by the preparation method of the hydroxymethylated melamino-formaldehyde resin provided by the invention has the characteristics of high hydroxyl content and high yield.
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Description

technical field

[0001] The invention relates to the technical fields of fine chemicals and flame-retardant materials, in particular to a preparation method and application of methylolated melamine-formaldehyde resin powder. Background technique

[0002] By controlling the reaction conditions of melamine and formaldehyde, methylolamine resin, methyl ether amine resin and methylene amine resin can be obtained respectively. Methylolamine resin has good water solubility and is easy to self-crosslink and solidify. It is often used as a finishing agent for fabrics and papers, endowing them with waterproof, shrink-proof and wrinkle-proof functions. At present, methods such as crystallization, centrifugation, and evaporative drying are commonly used in industry to remove the moisture in the solution of methylolated melamine formaldehyde resin (abbreviated as methylolamine resin) to obtain its powder, such as Chinese patent "201010561762.0", "201010122554.0 ", "2016104656216", "2018...

Claims

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