| 摘要 |
FIELD: chemistry.SUBSTANCE: invention relates to a method of halogenating butyl rubber. The method involves mixing starting butyl rubber and a halogenating agent which is deposited on a solid support with a developed adsorptive surface capable of reversible sorption of halogen. Mixing is carried out in the presence of a nitrogen-containing organic compound of general formula:(X = O, S, NH; R, R, R, R= H, Alk, Ar; Alk = CH, CH, n-CH, iso-CH, n-CH, iso-CH, di-CH, tert-CH, CH, iso-CH, CH, iso-CH, CH, iso-CH, CH, iso-CH, CH, iso-CH, CH, (iso-CH, cyclopentyl, cyclohexyl and other aliphatic and alicyclic substitutes; Ar = CH, CH-CH, CH-CH-o, CH-CH-m, CH-CH-n and other aromatic substitutes).EFFECT: high content of halogen in the end product in exo-halogenated form of isoprenyl links owing to elimination of secondary dehydrohalogenation and isomerisation reactions, as well as high molecular weight of the product owing to elimination of secondary decomposition reactions.5 cl, 2 tbl, 3 dwg, 7 ex |
