GB316951A - Process for the manufacture of condensation products from olefines and unsaturated hydrocarbons - Google Patents

Abstract

316,951. I. G. Farbenindustrie Akt.- Ges. Aug. 4, 1928, [Convention date]. Mineral and tar oils.-Olefines containing at least three carbon atoms in the molecule are condensed with each other or with aromatic hydrocarbons in the presence of a hydrosilicate possessing a large surface and high porosity. Suitable hydrosilicates are those of aluminium and magnesium, such as bleaching earth, Florida earth, and Fuller's earth, to which other condensing agents .may be added, such as a metal halide or an addition compound of an olefine with an aluminium halide. Aromatic hydrocarbons mentioned are benzene and its homologues, polynuclear hydrocarbons such as naphthalene and anthracene, and partially-hydrogenated compounds, such as tetrahydro-naphthalene. As olefinic components may be employed the technical products obtained in the refining of oils by the Edeleanu process. The olefines may also be employed diluted with other gases, e.g. in the form of oil gas or cracking gas. The reaction is facilitated by the use of raised temperature and increased pressure, and also by the presence of hydrogen halides. A solvent may be used. According to one of the examples, a mobile Edeleanu extract is treated in the presence of Fuller's earth with propylene at elevated temperature and pressure, and yields, after vacuum distillation, a bright odourless oil; similar results are obtained by using butylene amylene or cyclohexene. Specifications 291,137 and 296,034, [both in Class 2 (iii), Dyes &c.], are referred to. The Specification as open to inspection under Sect. 91 (3) (a) describes also the condensation of olefines containing at least three carbon atoms with aromatic and aliphatic compounds containing a double bond; phenols are mentioned as suitable aromatic compounds. This subjectmatter does not appear in the Specification as accepted.