JPS59100122A - Production of solid amino resin - Google Patents

Abstract

PURPOSE:To reduce a production time and cost and to obtain a solid amino resin of a low water content, by heating and reacting solid materials, and thereby making it possible to obtain a solid amino resin as a final reaction roduct, and to eliminate a formed dewatering step. CONSTITUTION:Use is made of a solid amino compound, such as urea, melamine, or guanamine, alone, its mixture or modified product, or the like; a solid formaldehyde such as paraformaldehyde; and a solid catalyst such as hexamethylenetetramine, sodium hydroxide, or sodium chloride. If necessary, solid additives such as surfactants and lubricants are used. It is thus possible to obtain an amino resin as final product in the form of solid by heating and reacting these solid materials only.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention belongs to the field of manufacturing technology of amine solid resin for amino resin molding materials used in wiring devices, electrical appliances, etc.

[Background technology]

Conventionally, Yuria: resin molding materials, melamine resin molding materials, guanamine resin molding materials, phenol-modified melamine wood IJ! ``The amine solid resin used for iIM type materials etc. contains formalin as formaldehyde, especially 37%
Because Polmarine is used, the amino resin that is the reaction product obtained inevitably contains a large amount of water, about 30% by weight, and cannot be used for its original purpose as a solid resin, so it is forced to be dehydrated. The resin is made into a solid resin with a moisture content of 5 to 10% by weight, but the time and cost losses due to the length of the manufacturing process become a problem, so it is necessary to make the moisture content lower in order to further improve quality and improve handling convenience. It was something I couldn't do.
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[Purpose of the invention]

The present invention makes it possible to obtain the amino resin, which is the reaction product, in solid form, thereby reducing production time and cost by eliminating the forced dehydration step, and furthermore, obtaining an amine solid resin with less moisture than conventional products.Amino Solid 431 This work was developed for the purpose of providing a method for producing fat.

[Coherence of the Invention] The present invention is a method for producing an amine solid resin, which is characterized by heating and reacting solid raw materials consisting of a solid amino compound, solid formaldehyde, solid melting medium, etc. By obtaining it in solid form and eliminating the forced dehydration step, it is possible to reduce production time and cost, and to obtain an amino solid resin with low moisture content. The present invention will be explained in detail below. The solid amino compound used in the present invention is a single solid amino compound, a mixture, a modified product, etc. of solid amino compounds such as urea, melamine, guanamine, etc., the solid formaldehyde is a solid formaldehyde such as paraformaldehyde, and the solid catalyst is hexamethylene. Solid catalysts such as tetramine, sodium hydroxide, and ammonium chloride. Other additives such as surfactants and lubricants that are added as necessary are all solid. By heating and reacting only these solid raw materials, the amino resin that is the reaction product is also solid. This is what you can get.

〔Example〕

Add 1.5 mol of cyformaldehyde to 1,971 mol of formaldehyde and heat to dissolve. To the solution, add sodium hydroxide to adjust the pH to 8, react at reflux temperature for 60 minutes, and cool the reaction product. Triple moisture! i
L% urea solid resin was obtained.

[Conventional example] 1.5 mol of cyformaldehyde to 1971 mol of 37
% formalin and then PHg with 25% ammonia water.
The water content of the reaction product was 30 ff1m % after being reacted for 60 minutes at the following conditions: The reaction product was dehydrated under reduced pressure to obtain a urea solid resin having a water content of 10% by weight.

〔Effect of the invention〕

As explained above, the productivity and moisture content of the urea solid resins of Examples and Conventional Examples are clearly shown in Table 1. As is clear from Table 1, the manufacturing method of the amino solid resin of the present invention improves the productivity and moisture content of the urea solid resins. The l+'UI type was also able to convert J fat to b', confirming the superiority of the present invention.

Table 1 Note: Ratio when conventional manufacturing time and cost are each set as 100

Claims (1)

[Claims] A method for producing an amine solid resin, which comprises heating and reacting solid raw materials consisting of a solid amine compound, solid formaldehyde, solid catalyst, etc.