Polyamide resin has excellent performance and is widely used

Widely used in ink, hot melt adhesive.

Polyamide resin is a chemical raw material with excellent performance and wide application. According to its properties, it can be divided into two categories: non-reactive or neutral polyamide and reactive polyamide. Neutral polyamides are mainly used in the production of inks, heat-sealing adhesives and coatings, reactive polyamides are used in epoxy resin curing agents, and in thermosetting surface coatings, adhesives, lining materials and potting, molding resin. Neutral dimer acid polyamide resin has good adhesion on polyethylene and other substrates, and is especially suitable for printing on plastic films such as polyethylene surface packaging film and metal foil composite lamination film; inks prepared with neutral polyamide resin include: Glossy, good bonding performance, good alcohol dilution, low gelling, quick drying, low odor. Dimer acid-based heat-sealing resin, widely used in shoemaking, canning, packaging and bookbinding; seam sealing for canned packaging; bonding of new structural containers for frozen apples, oranges and other juices. Heat-sealing polyamide binders are used for strong material adhesion due to their resistance to dry cleaning, strong detergents, bleaching agents and high temperature washing conditions in laundry rooms and households, and they have high adhesion strength to fabrics and are easy to use. Adhesion and excellent moisture resistance for heat-shrinkable cable jackets. Other uses of neutral polyamine resins include the preparation of thixotropic coatings, domestic water-based adhesives, fabric antistatic agents, transparent candles and detergents. The reactive polyamide resin is further reacted and used as a curing agent for epoxy resins, resulting in extensive crosslinking into a thermosetting resin. When used as a curing agent, it has the advantages of high optionality, non-toxicity, can be cured at room temperature, soft and not brittle, etc., which can make epoxy resin have excellent adhesion, flexibility, toughness and chemical resistance. , moisture resistance and surface finish. The largest use of dimer acid-based amine resin-epoxy resin is adhesive, surface coating and potting and molding resin. The adhesive has good wetting performance, high bonding strength, good internal plasticity, and can withstand greater impact force than epoxy resins cured with amines. This kind of adhesive can be used as metal side seam adhesive, plastic and automobile body welding agent and caulking material, and can also be used as metal-metal bonding structural adhesive. Dimer acid-based polyamide-cured epoxy resin with excellent properties such as flexibility, chemical resistance, salt corrosion resistance, impact resistance and high gloss, and is widely used as surface coating.