methyl etherification amino resin for? What's the use of methyl etherification amino resin?

is a general term for resins formed by polycondensation of amino-containing compounds with formaldehyde. Important resins are urea formaldehyde resin, melamine formaldehyde resin and aniline formaldehyde resin.can generally be made into aqueous solution or ethanol solution, can also be dried into powder solid. Most of them are hard and brittle, and need to be filled when used. Coating with amino resin is a kind of multi functional compounds, containing (-NH2) functional compounds and aldehydes (mainly formaldehyde) addition condensation, and then the generation of methylol (-CH20H) and aliphatic monohydric alcohol partial etherification or all etherification of two products obtained. According to the use of different amino compounds can be divided into four categories: urea formaldehyde resin, melamine resin, benzene melamine resin, copolymer resin.

If amino resin is used alone as a paint film, the paint film is too hard, brittle and has poor adhesion to the substrate. Therefore, it is usually combined with other types of resins that are compatible with amino resin and can be cross-linked by heating. It can be used as a cross-linking agent for oil-modified alkyd resin, saturated polyester resin, acrylic resin, epoxy resin, epoxy ester, etc. Such matching, by heating can obtain a three-dimensional network structure of the strong toughness of the paint film, according to the use of amino resin and other matching resin changes, the resulting paint film also has its own characteristics.

The paint film with amino resin as cross-linking agent has excellent gloss, color retention, hardness, chemical resistance, water resistance and weather resistance, etc. Therefore, the paint with amino resin as cross-linking agent is widely used in industrial coatings such as automobiles, industrial and agricultural machinery, rigid furniture, household appliances and metal pre-coating. In the presence of acid catalysts, amino resins can be baked at bottom temperature or cured at room temperature, which can be used for reactive two-liquid wood coating and automotive repair coatings.