Petroleum Aliphatic Hydrocarbon Resins

Hydrocarbon resins from petroleum are commonly used as a less expensive alternative to phenolic tackifying resins. These resins are commonly used in the tire industry however, they do not impart aged tack as good as phenolic tackifier resins. 

These hydrocarbon resins are produced from the cationic polymerization of mixed olefin and diolefin feedstocks. These raw materials consist of C5 feedstocks such as pentenes, pentadiene, isoprene, and amylene, and C6 streams of hexenes and hexa-dienes. 

Aliphatic hydrocarbon tackifying resins Aliphatic tackifiers 

Sartomer Company Harwick Standard Eastman Hydrocarbon Resins ExxonMobil Chemical Neville Chemical 

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Figure 4 matches the tack strength performance of palm kernel oil alkyd resins as a tackifier in rabber compound againsta reference (the same ENR compound without alkyd), polyterpene (a 3-pinene resin with softening point of around 30°C) and petroleum resin (C5 type aliphatic hydrocarbon resin withsoftening point around 100°C), two of the very common tackifiers in the tire industry. These... 

Petroleum resins are low molecular weight thermoplastic hydrocarbon resins synthesized from steam cracked petroleum distillates. These resins are differentiated from higher molecular weight polymers such as polyethylene and polypropylene, which are produced from essentially pure monomers. Petroleum resin feedstocks are composed of various reactive and nonreactive aliphatic and aromatic components. The resins are usually classified as C-5... 

G-5—G-9 Aromatic Modified Aliphatic Petroleum Resins. Compatibihty with base polymers is an essential aspect of hydrocarbon resins in whatever appHcation they are used. As an example, piperylene—2-methyl-2-butene based resins are substantially inadequate in enhancing the tack of 1,3-butadiene—styrene based random and block copolymers in pressure sensitive adhesive appHcations. The copolymerization of a-methylstyrene with piperylenes effectively enhances the tack properties of styrene—butadiene copolymers and styrene—isoprene copolymers in adhesive appHcations (40,41). Introduction of aromaticity into hydrocarbon resins serves to increase the solubiHty parameter of resins, resulting in improved compatibiHty with base polymers. However, the nature of the aromatic monomer also serves as a handle for molecular weight and softening point control. 

The generic name hydrocarbon resins designates several families of low molar mass polymers (M from 600 to 104) obtained by polymerization of petroleum, coal tar, and turpentine distillates [80-82], In most cases, these products are obtained by cationic polymerization of mixtures either of aliphatic and/or aromatic mono and diolefins present in the more or less enriched Cs and C9 feedstreams, or of pure aromatic monomers generally of the styrene type. They are complex mixtures of polymers ranging from viscous liquids and tacky fluids to hard, brittle thermoplastics, and are used as additives in adhesives, printing inks, rubbers, coatings, etc. [80-82], They are obviously amorphous and are characterized by their softening point (0 to —150° C), determined by standardized methods (i.e.,... 

Petroleum resins are a by-product of oil refining. Like hydrocarbon resins, a range of grades are produced. Aliphatic resins, which contain oligomers of isoprene, tend to be used as tackifiers, whereas aromatic resins, which also contain high levels of dicyclopentadiene, tend to be classed more as reinforcing systems. 

Synthetic petroleum resins, C5 aliphatic types. See C5 hydrocarbon resin,... 

CHT-Aiginat EHV 3, CHT-Aiginat MV, CHT-Aiginat NV ia, CHT-Aiginat NV. See Algin CHT-Antifoam BSN. See Silicone emulsion CHT-Antifoam K 50. See Silicone CHT-Cataiase BF. See Catalase C5 hydrocarbon resin, aliphatic Synonyms Synthetic petroleum resins, C5 aliphatic types... 

Resins are thought to be molecular precursors of the asphaltenes. The polar heads of the resins surround the asphaltenes, while the aliphatic tails extend into the oil. Figure 13. Resins may act to stabilize the dispersion of asphaltene particles and can be converted to asphaltenes by oxidation. Unlike asphaltenes, however, resins are assumed soluble in the petroleum fluid. Pure resins are heavy liquids or sticky (amorphous) solids and are as volatile as the hydrocarbons of the same size. Petroleum fluids with high-resin content are relatively stable. Resins, although quite surface-active, have not been found to stabilize significantly water-in-oil emulsions by themselves in model systems. However, the presence of resins in solution can destabilize emulsions via asphaltenes solvation and/or replacement at the oil/water interface (89-96), Figure 13. 

Hydrocarbon Resins - There are two general types, aliphatic and aromatic resins. Both resins are obtained from the polymerization of olefins from the petroleum industry. Aromatic resins are based on coumarone-indene and polyindene whereas the aliphatic resins are from polymerized mixed olefins which are not based on indene. 

Polydicyclopentadiene resins n. Friable, thermoplastic, unsaturated aromatic resins derived from petroleum hydrocarbons whose principal component is dicyclopen-tadiene. Softening points from 10 to 140°C (50-285°F) Sp gr, 0.99-1.11 iodine value, 170-200. Soluble in aliphatic, aromatic, chlorinated solvents insoluble in water, alcohols, and glycols. 

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