propylene, olefins, paraxylene, naphtha, aromatics, petrochemical, acrylonitrile, butadiene, styrene, monomer, acetic acid, caprolactam, acrylic acid, ethane, feedstock, polypropylene, cumene, polyolefin, adipic acid, butyl rubber, urea, octene, terephthalic acid, acetyl, refinery, cyclohexane, calcium carbide, aniline, phthalic anhydride, phenol, sodium chlorate, hexene, polyethylene, ethyl acetate, isobutylene, sulfur, orthoxylene, hydrocracking, isomerization, butene, butanes, alumina, vinyl acetate, esters, caustic soda, crude oil, isocyanate, catalytic cracker, toluene, phosphoric acid, coker, ferrosilicon, polybutadiene, synthetic rubber, xylenes, desulfurization, methanol, succinic acid, amides, polymers, ethene, propionic acid, pentane, ethylbenzene, molecular sieve, terephthalate, dehydrogenation, paraffins, hydroperoxide, amines, carbamide, ammonia, polyester fiber, butyl, coking, metallocene, ferroalloy, benzene, isoprene, alkylation, polycondensation, acetylene, methionine, blast furnace, refiners, sulfuric acid, titanium dioxide, resins, plasticiser, butylene, epichlorohydrin, cst, potassium sulphate, reformate, fractionation, sulfur dioxide, methylamine, copolymers, pyridine, chemical, aromatic hydrocarbon, methyl methacrylate, methane, formaldehyde, propane, ethanol, glycerol, chlorine, hydrogen, monoxide, alkali, glycol, acetate, hydrocarbon, olefin, poly, ethyl, chloro, diethyl, naphthalene, vinyl

vinyl, vinyl group, vinyl radical

alkene, olefine