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公开(公告)号：DE943188C
公开(公告)日：1956-05-17
申请号：DEST008119
申请日：1954-04-29
Applicant: STANDARD OIL DEV CO
IPC: C07F7/02
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公开(公告)号：FR1116684A
公开(公告)日：1956-05-09
申请号：FR1116684D
申请日：1954-12-30
Applicant: STANDARD OIL DEV CO
IPC: C07C57/34 , C08G63/181
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公开(公告)号：FR1115632A
公开(公告)日：1956-04-26
申请号：FR1115632D
申请日：1954-11-18
Applicant: STANDARD OIL DEV CO
IPC: C07C31/18
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公开(公告)号：FR1114113A
公开(公告)日：1956-04-09
申请号：FR1114113D
申请日：1954-11-26
Applicant: STANDARD OIL DEV CO
Abstract: In a polymerisation process using an alkali metal as catalyst, the reaction product is treated with aqueous sulphuric acid containing more than 80 per cent but not more than 96 per cent H2SO4 in an amount sufficient to convert the alkali metal quantitatively to its bisulphate. The preferred polymerisation process is one employing a diolefin, e.g. butadiene, isoprene, piperylene, 2-3-dimethylbutadiene and 2-methylpentadiene, with or without sytrene or a ring substituted alkyl styrene. The polymerisation process may use from 1.5 to 10 parts of finely divided alkali metal, e.g. sodium, from 50 to 500 parts of an inert hydrocarbon diluent boiling from 20-200 DEG C., from 10-35 parts of an ether having not more than 2 carbon atoms in the molecule, per 100 parts of the monomer, and a C1 to C5 aliphatic alcohol, e.g. isopropanol or tertiary butanol. Specified diluents are solvent naphtha/pentane, xylene, benzene and cyclohexane, while the ethers may be acetal, dioxane, diethyl ether, vinyl ethyl ether, vinyl isobutyl ether, t-butylmethyl ether and methylol.
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Patent Agency Ranking
公开(公告)号：FR1113942A
公开(公告)日：1956-04-05
申请号：FR1113942D
申请日：1954-11-04
Applicant: STANDARD OIL DEV CO
IPC: C07C7/163
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公开(公告)号：FR1112406A
公开(公告)日：1956-03-14
申请号：FR1112406D
申请日：1954-09-14
Applicant: STANDARD OIL DEV CO
IPC: C10M159/24 , F02B3/06
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公开(公告)号：FR1112405A
公开(公告)日：1956-03-14
申请号：FR1112405D
申请日：1954-09-14
Applicant: STANDARD OIL DEV CO
IPC: A01N25/02
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