Modified melamine formaldehyde resin with high flexibility
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A technology of melamine and formaldehyde resin, which is applied in the field of melamine resin production, can solve problems such as poor flexibility, and achieve the effects of increasing toughness, increasing stability and reducing brittleness
Inactive Publication Date: 2015-01-14
CHONGZHOU HERUI TECH
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Problems solved by technology
Due to its unique triazine ring structure and strong reactivity of methylol compounds, melamine resin has some shortcomings, such as poor flexibility
Method used
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Embodiment 1
[0023] A total of 100 kilograms of raw materials, which are made from the following raw materials in parts by weight:
[0033] Mix melamine, formaldehyde, sodium hydroxide, alcohol and water in sequence, heat to 80°C and stir for 10 minutes, then add isocyanurate, continue stirring for 1, then add oleoyl diethanolamine, polyethylene glycol, nonylphenol Oxyethylene ether (n=4), control the temperature at 80°C, stir evenly, cool to room temperature after complete dissolution, and obtain modified melamine formaldehyde resin.
Embodiment 2
[0035] A total of 100 kilograms of raw materials, which are made from the following raw materials in parts by weight:
[0045] Mix melamine, formaldehyde, sodium hydroxide, alcohol and water in turn, heat to 70°C and stir for 10 minutes, then add isocyanurate, continue stirring for 2 hours, then add linoleoyldiethanolamine, polyethylene glycol, octylphenol Polyoxyethylene ether (n=5), control the temperature at 60°C, stir evenly, cool to room temperature after complete dissolution, and obtain modified melamine formaldehyde resin.
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Abstract
The invention provides modified melamine formaldehyde resin with high flexibility. The modified melamine formaldehyde resin is prepared from the following raw materials in parts by weight: 100 parts of melamine, 160-220 parts of formaldehyde, 10-20 parts of isocyanurate, 5-10 parts of fatty acid amide, 5-8 parts of polyethylene glycol, 3-6 parts of alkylphenol polyoxyethylene ether, 2-5 parts of sodium hydroxide, 40-60 parts of alcohol and 20-30 parts of water. The modified melamine formaldehyde resin with high flexibility disclosed by the invention can be used for effectively prolonging the polymerization time of the modified melamine formaldehyde resin, increasing the storage period of the modified melamine formaldehyde resin and improving the flexibility of the resin. A resin modifying component contained in the modified melamine formaldehyde resin with high flexibility can participate in the copolycondensation reaction of the resin to change the resin structure, so that the cross-linking density is lowered, and thus, the foam strength is increased, the flexibility is increased and the brittleness is lowered. The modified melamine formaldehyde resin is full of elasticity and the stability of the modified melamine formaldehyde resin is increased.
Description
technical field [0001] The invention relates to the field of melamine resin production, in particular to a highly flexible modified melamine formaldehyde resin. Background technique [0002] Melamine formaldehyde resin is a thermosetting resin that can form a water-resistant, heat-resistant, wear-resistant, pollution-resistant, and glossy resin protective film. It is widely used in the furniture industry and is mostly used in the preparation of melamine-impregnated paper. Due to its unique triazine ring structure and strong reactivity of methylol compounds, melamine resin has some shortcomings, such as poor flexibility. Therefore, according to different requirements, in order to improve the inherent performance defects of melamine resin, it is often realized by modifying the resin. Contents of the invention [0003] The purpose of the present invention is to provide a highly flexible modified melamine formaldehyde resin. [0004] The technical scheme adopted is as follow...
Claims
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Application Information
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