Amino Resin
Amino resin by containing the amino compounds with formaldehyde resin formed by the condensation of the general. Important resin urea-formaldehyde resin, melamine-formaldehyde resin and aniline formaldehyde resin. Generally be made of aqueous or ethanol solution, can also be dried into a powder solid. Most of the hard and brittle, when you need to increase the use of filler.
Amino resin coating is a multi functional groups of compounds in order to contain (-NH2) functional group compounds with aldehydes (mainly formaldehyde) addition condensation, then the resulting hydroxymethyl (-CH20H) and the aliphatic monohydric alcohols part of the ether of or all of the ether of the product to be 2. According to the amino compounds used can be divided into different categories: urea-formaldehyde resin, melamine resin, benzene, on behalf of the melamine resin, copolymer resin.
If used alone as a film if the amino resin, obtained film is too hard, and brittle hair, poor adhesion to the substrate, it usually is compatible with the amino resin, and can be cross-linked by heating other types of resins usable by He can be used as oil-modified alkyd resins, unsaturated polyester resin, acrylic resin, epoxy resin, epoxy ester such as cross-linking agent, such as matching, by heating can be three-dimensional network structure, there is strength and toughness of paint membrane, depending on the use of amino resins and other resins match the changes, the resulting film has its own characteristics.
With the amino resin as crosslinking agent film with excellent gloss, color retention, hardness, chemical resistance, water resistance and weather resistance, etc. Therefore, amino resin as crosslinking agent is widely used in paints and automotive, industrial and agricultural machinery, just-made furniture, household appliances and metal pre-coated and other industrial coatings. Amino resin in the presence of acid catalyst may be in the bottom temperature baking or curing at room temperature, this performance can be used for reaction of two liquid-based wood coating and automotive repair coatings.
