Basic sources and application areas of petroleum resins
A petroleum resin is a C5 and C9 fraction produced by petroleum cracking. It is a thermoplastic resin produced by pretreatment, polymerization, distillation, etc. It is not a polymer but a molecular weight of 300-3000. Oligomer.
Basic source
Petroleum resin is named for its petroleum derivative. It has low acid value, good miscibility, water resistance, ethanol resistance and chemical resistance. It is chemically stable to acids and bases, and has good viscosity and thermal stability. Features. Petroleum resins are generally not used alone, but as accelerators, regulators, modifiers and other resins.
Basic classification
Petroleum resin
Petroleum resins can be generally classified into C5 alphatic (aliphatic), C9 aromatic (aromatic hydrocarbon), DCPD (cycloaliphatic), and pure monomer (such as poly SM, AMS (alpha methyl styrene) and other products) Four types, the constituent molecules are hydrocarbons, so they are also called hydrocarbon resins (HCR).
The petroleum resin is classified into an aliphatic resin (C5), an alicyclic resin (DCPD), an aromatic resin (C9), an aliphatic/aromatic copolymer resin (C5/C9), and a hydrogenated petroleum resin depending on the raw materials. C5 hydrogenated petroleum resin, C9 hydrogenated petroleum resin.
Application category
paint
The paint mainly uses C9 petroleum resin with high softening point, DCPD resin and C5/C9 copolymer resin. The addition of petroleum resin to the paint can increase the gloss of the paint and improve the adhesion, hardness, acid resistance and alkali resistance of the paint film.
rubber
The rubber mainly uses a low softening point C5 petroleum resin, a C5/C9 copolymer resin, and a DCPD resin. The resin and the natural rubber colloid have good mutual solubility, and have no great influence on the rubber vulcanization process. The addition of petroleum resin to the rubber can play the role of thickening, reinforcing and softening. In particular, the addition of the C5/C9 copolymer resin not only increases the adhesion between the rubber particles, but also improves the adhesion between the rubber particles and the cord, and is suitable for high-demand rubber products such as radial tires.
Adhesive industry
Petroleum resin has good adhesion, and the addition of petroleum resin to the adhesive and pressure-sensitive adhesive tape can improve the adhesive strength, acid resistance, alkali resistance and water resistance of the adhesive, and can effectively reduce the production cost.
Ink industry
Ink resin for ink, mainly high softening point C9 stone
Oil resin, DCPD resin. The addition of petroleum resin to the ink can achieve the effects of color development, quick drying, brightening, and improved printing performance.
Other industries
The resin has a certain degree of unsaturation and can be used for paper sizing agents, plastic modifiers, and the like.
5. Petroleum resin is non-dangerous. During transportation, it should be protected from sunlight and rain; it should not be transported together with pyrophoric materials, strong oxidants and strong acids.
Petroleum resins should be stored in a ventilated, cool, dry environment. The storage period is generally one year, and can be used if it is qualified after one year.
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