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C9 petroleum resin use

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Petroleum resins are different from general-purpose resins and cannot be used alone. They are usually blended with other materials to improve the properties of various products.
Petroleum resins are mainly used in the following aspects:
(1) Applications in the coatings industry. In the coatings industry, petroleum resins can be combined with other resins to replace high-priced resins in whole or in part, thereby reducing costs and improving various properties such as gloss, hardness, water resistance, stability and chemical resistance. For example, in the formulation of novolac, the rosin-modified phenolic resin and rosin calcium ester are replaced by C9 petroleum resin, and the obtained product still meets the standards of novolac and phenolic enamel. However, the cost of C9 petroleum resin is less than that of rosin modification. The cost of phenolic resin is 1/4, so the cost can be greatly reduced. Adding alicyclic petroleum resin to epoxy resin, polyurethane and lacquer can improve the hardness, flexion test, temperature resistance and weather resistance of the product.
(2) Application in adhesives. Among the binders, petroleum resins mainly serve to provide adhesion. The main components of the binder are natural rubber, synthetic rubber, polyolefin, polyacrylic acid vinegar, ethylene-vinyl acetate copolymer, etc. The addition of petroleum resin can improve the bonding stability of these polymers. , creep resistance, heat resistance and other properties. For example, a petroleum resin and an SBS thermoplastic elastomer block copolymer are mixed in a mixed solvent of toluene hexane, and the resulting viscous mixture can be used to form a pressure-sensitive adhesive tape into a pressure-sensitive adhesive.
(3) Applications in the rubber industry. C9 petroleum resin is mainly used as a rubber softening additive in the rubber industry. The styrene-butadiene rubber itself is not sticky and hard. The addition of C9 petroleum resin causes the molecular chain of styrene-butadiene rubber to be divided, so that the product has good viscosity and softness. On the other hand, C9 petroleum resin can reduce the amount of natural rubber into synthetic rubber, and significantly reduce the cost without changing the quality of rubber products. In terms of process, the use of petroleum resin can save a raw rubber refining process, shorten the production cycle and improve economic efficiency.
(4) Applications in printing inks. In the ink, petroleum resin is mainly used as a binder. The petroleum resin has good compatibility with many components in the ink, and for various printing inks, there are corresponding petroleum resins to meet the wetting speed, drying speed, solvent release, water and alkali resistance, etc. Requirements for various indicators. Petroleum resin is processed into ink to maintain stable dispersion of pigment for a long time.