Process for the Production of Polybutadiene Oils

    公开(公告)号:GB1153775A

    公开(公告)日:1969-05-29

    申请号:GB4466766

    申请日:1966-10-06

    Applicant: BASF AG

    Abstract: 1,153,775. Oily butadiene polymers. BADISCHE ANILIN- & SODA-FABRIC A.G. 6 Oct., 1966 [7 Oct., 1965], No. 44667/66. Heading C3P. Oily homopolymers of butadiene and copolymers of butadiene with up to 25% by weight of a copolymerizable olefinically unsaturated monomer, are made by polymerizing the monomer or monomers, in an inert organic solvent at temperature of from - 50‹ to + 50‹ C., in the presence of 0À2 to 10 mole per cent, of the reaction product of sodium, potassium, rubidium, or caesium with a compound of the formula where A is an aromatic radical, R 1 , R 2 , R 3 , R 4 denote C 1 to C 20 saturated aliphatic radicals, x is an integer of 1 to 4, and n an integer of 2 to 20. Any substituent must not react with the above metals. The solvent may be selected from aliphatic and cycloaliphatic ethers, aliphatic, aromatic, and cycloaliphatic hydrocarbons. Compounds of Formula (I) may be cumene, o or m or p-cymene, o, m or p-diisopropylbenzene, isopropylnaphthalene, diisopropylnaphthalene, alpha - ethyl - propylbenzene, triisopropylnaphthalene, triisopropylanthracene, mono- or di-isopropyl anthracene, isopropylcarbazole, isopropylfluorene, or retene. Suitable compounds for preparation of compounds of Formula (II) are m or p-diisopropylbenzene, 1,4 - diisopropyl - 2 - tert.- butylbenzene, 1,4 - dibutyl - 2 - ethylbenzene, 1,4 - diisopropyl - 2,5 - di - methylbenzene, and 1,4 - diisopropylnaphthalene. Suitable comonomers are isoprene, styrene and substituted styrenes, esters of acrylic and methacrylic acids, and esters of maleic, fumaric, and itaconic acids. The polymers are recovered by conventional techniques such as washing with water and hydrogen halides. The polymers may be aftertreated.

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