Rosin is a very important chemical raw material, widely used in various industrial sectors such as soap, papermaking, paint and coatings, ink, adhesive, rubber, food, electronics, building materials and solder paste....
1. Soap Industry
Rosin is cooked with soda ash or caustic soda to make rosin soap. Pine soap features great detergency, easy solubility in water, oil dissolving, and easy foaming. The stickiness of rosin keeps soap from cracking and rancidity.
2. Papermaking Industry
In papermaking industry, rosin and caustic soda are used to make rosin sodium soap, that is, sizing material. The sizing material is mixed with paper pulp and alum. The rosin is softened and filled into the small paper fibers when the pulp is rolled and heated. After paper is "glued" or "sized", it can improve strength, smoothness, water resistance and reduces ink penetration, stretching.
3. Paint & Coatings Industry
Rosin is easily soluble in various organic solvents, and easy to form a film with luster. It is one of the basic raw materials for paints and coatings. The rosin is to make paint bright in color, dry quickly, smooth in film appearance, longer in attaching.
4. Ink Industry
Rosin is mainly used as a color carrier in printing inks. It make inks more adhesive to paper. Without use of rosin, the ink will be printed to be dull and blurred.
5. Adhesive Industry
Based on rosin esters and hydrogenated rosin esters, adhesives are commonly used as hot melt adhesives, pressure sensitive adhesives and rubber tackifiers.
6. Rubber Industry
Rosin is used as a softener in the rubber industry to increase its elasticity. Disproportionated rosin potassium soap can be made into synthetic rubber.
7. Food industry
Glycerides of hydrogenated rosin are heated and melted together with natural chicle, wax, vinyl acetate, etc., and then mixed thoroughly with spices, sugar, and pigments to make chewing gum. Hair remover composed of 88-94% melted rosin and 6-12% cottonseed oil are often used to remover the hair left on the animal body and head in slaughterhouses.
8. Electrical Industry
35% rosin and 65% bright oil are used to make insulating oil as a protective film on cables for insulation and heat resistance. Rosin is mixed with bakelite and other man-made resins for insulating varnishes.
9. building materials industry
Rosin is mainly used as concrete foaming agent and floor tile adhesive in the building material industry. Rosin is also used as a binder for vinyl chloride asbestos tiles. Rosin are mixed with linseed oil, calcium carbonate, charcoal, pigments, etc. together to make carpet tiles.
10. Solder Flux
Rosin flux is a special material for removing oxide film that is formed on the surface of the metal after the metal is heated in contact with air in the course of electronic welding.