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51. 发明专利

NL7013549A Polymerisation of isoprene - in presence of organoaluminium /titanium tetrahalide catalyst and ethylene 未知
公开(公告)号：NL7013549A
公开(公告)日：1972-03-16
申请号：NL7013549
申请日：1970-09-14
IPC分类号： C08F136/08 , C08D1/14
摘要： Cis-1,4-polyisoprene is obtained by polymerising isoprene in presence of catalyst comprising an organo-Al cpd. and a Ti-tetrahalide and up to 8 pbw ethylene per 100 pbw of isoprene. Polymer has high Mooney viscosity; mech. strength of the unvulcanised polymer is superior to that of usual polyisoprene or natural rubber: achieved without reduction of polymn. rate and cis-1,4 content of product.

53. 发明专利

NL7109402A 未知
公开(公告)号：NL7109402A
公开(公告)日：1972-01-11
申请号：NL7109402
申请日：1971-07-07
IPC分类号： C08F4/70 , C08F36/04 , C08D1/14
摘要： 1346091 Butadiene polymerization catalyst GOODYEAR TIRE & RUBBER CO 1 June 1971 [8 July 1970] 18252/71 Heading C3P The polymerization of butadiene, with or without other conjugated dienes, is carried out by means of a catalyst composition comprising, in specified proportions, (i) an organometallic compound of a metal of Group I, II or III, (ii) an organic compound of nickel or nickel carbonyl, (iii) a metal fluoride (including BF 3 ) or complex thereof, and (iv) a compound containing a hydroperoxide group. The catalyst components may be combined in the presence of the monomer or the catalyst may be preformed; in a preferred procedure it is preformed in the presence of a small amount of a conjugated diene. Examples describe the polymerization of butadiene in benzene with catalysts derived from (i) Et 3 Al or (i-Bu) 3 Al, (ii) nickel octanoate, (iii) BF 3 .Et 2 O, and (iv) cumene hydroperoxide, tbutyl hydroperoxide, di-isopropylbenzene hydroperoxide, p-menthane hydroperoxide or hydrogen peroxide. The polymers produced have a high proportion of their butadiene units in the cis-1,4 orientation.

56. 发明专利

DE2043726A1 未知
公开(公告)号：DE2043726A1
公开(公告)日：1971-03-18
申请号：DE2043726
申请日：1970-08-31
IPC分类号： C07C4/10 , C08F36/06 , C08D1/14
摘要： 1312132 Polymerization catalyst for conjugated dienes GOODYEAR TIRE & RUBBER CO 14 Aug 1970 [11 Sept 1969] 39259/70 Heading C3P Butadiene is polymerized, or copolymerized with other conjugated dienes, to a polymer comprising at least 90% of cis-1,4 units by using a catalyst system comprising (A) an organometallic compound of a metal of Group I, II or III, (B) a carboxylate or organic co-ordination complex of nickel, or nickel tetracarbonyl and (C) a tetrafluoroborate of Li, Be, Ca, Mg, Ni or Co or lithium hexafluorophosphate or hexafluoroantimonate or an organic hexafluorophosphate or hexafluoroantimonate, the mole ratios being: (A)/(B): 0À3/1 to 200/1; (C)/(B): 1/1 to 300/1; (A)/(C): 0À05/1 to 5/1. The catalyst composition may be formed in situ or preformed. The examples describe the polymerization of butadiene in solution in benzene using various combinations of (A) triethylaluminium or tetraethyllithium aluminium, (B) nickel octanoate and (C) nickel fluoroborate, lithium fluoroborate, lithium hexafluorophosphate, triphenylmethyl hexafluorophosphate or di-(2-ethylhexyl) ammonium hexafluorophosphate. The nickel fluoroborate was pretreated to remove part of its water of crystallization.

58. 发明专利

DE2034989A1 未知
公开(公告)号：DE2034989A1
公开(公告)日：1971-02-04
申请号：DE2034989
申请日：1970-07-15
IPC分类号： C08F8/00 , C08C19/44 , C08D1/14
摘要： Process for obtaining starter (co) polymers, characterized in that it comprises treating polymers of conjugated dienes and copolymers of conjugated dienes with vinylaromatic compounds, obtained in solution by means of an anionic initiator, mainly N-butyl lithium, which are still found in activated state, in the presence of at least one branching agent, which comprises in its molecule well the group (see formula), well the group (see formula), where r is a hydrocarbon radical. (Machine-translation by Google Translate, not legally binding)

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