Gum Rosin
Rosin is a solid form of resin obtained from pines and some other plants, mostly conifers, produced by heating fresh liquid resin to vaporize the volatile liquid terpene components. It is semi-transparent and varies in color from yellow to black. At room temperature rosin is brittle, but it melts at stove-top temperature. It chiefly consists of various resin acids, especially abietic acid
Rosin is brittle and friable, with a faint piny odor. It is typically a glassy solid, though some rosins will form crystals, especially when brought into solution.[3] The practical melting point varies with different specimens, some being semi-fluid at the temperature of boiling water, others melting at 100 °C to 120 °C. It is very flammable, burning with a smoky flame, so care should be taken when melting it. It is soluble in alcohol, ether, benzene and chloroform.
Rosin is an ingredient in printing inks, photocopying and laser printing paper, varnishes, adhesives (glues), soap, paper sizing, soda, soldering fluxes, and sealing wax.
Rosin can be used as a glazing agent in medicines and chewing gum. It is denoted by E number E915. A related glycerol ester (E445) can be used as an emulsifier in soft drinks. In pharmaceuticals, rosin forms an ingredient in several plasters and ointments.
Rosin mainly is used for enhancing the strength, elasticity, and viscosity of adhesive. Gum Rosin can be used as coating material for release control fertilizer.
In industry, rosin is a flux used in soldering. The lead-tin solder commonly used in electronics has 1 to 2% rosin by weight as a flux core, helping the molten metal flow and making a better connection by reducing the refractory solid oxide layer formed at the surface back to metal. It is frequently seen as a burnt or clear residue around new soldering.
A mixture of pitch and rosin is used to make a surface against which glass is polished when making optical components such as lenses.
Some brands of fly paper use a solution of rosin and rubber as the adhesive.
We can supply best quality Gum Rosin from:
- Indonesia (WW Grade)
- Nepal (N, WG grade)
- Indian (N Grade) along with Dark coloured Rosin application in Rubber Industry at a very cheaper prices.
Hydrocarbon Resins / Petroleum Resins
Hydrocarbon resin is a C5/C9 aromatic hydrocarbon used in industrial applications. It has a tackifying effect and is suitable for use in paint, printing ink, adhesives, rubber and other areas where tackiness is required.
It is a kind of thermal plasticizing hydrocarbon resin produced by C5, C9 fraction, by-products of petroleum cracking, through pretreatment, polymerization and distillation. It is not a high polymer but a low polymer with the molecular weight between 300-3000. Featured by acid value, easy mutual solubilities, resistant to water, resistant to ethanol and chemicals. It has the chemical stabilizing property to acid and alkaline, viscosity adjusting and thermal stabilizing, Generally, the petroleum resins are not used independently, but have to be used together with other kinds of resins as promoters, adjusting agents and modifiers in hot-melt adhesive, pressure-sensitive adhesive, hot melt road marking paint, rubber tires and so on.
There are various types of hydrocarbon resins include C5 Resins, C9 Resins, C5/C9 copolymer resins, and hydrogenated resins. C5 Resins are produced from aliphatic crackers like Piperylene and Isoprene, the current major catalyst is AlCl3. C9 Resins are produced from aromatic crackers like Vinyltoluenes, Indene, Alpha Methylstyrene, Stryene, Methylindenes, etc, the current major catalyst is BF3. C5/C9 copolymer resins are produced from both aliphatic crackers and aromatic crackers. Regarding to hydrogenated resins, there are some additional process like hydrogenated (use hydrogen), by this way, the double bond is neutralized and light color even water white resins are produced. There are some different types, including hydrogenated C5 Resins, hydrogenated C9 Resins, Hydrogenated C5/C9 Resin, and Hydrogenated DCPD resins.
Petroleum resins are used to provide chemical resistance, adhesion,and pressure resistance properties in these industries. Petroleum resins are used in adhesives & sealants, paints & coatings , rubber compounding, printing inks, and others applications.
