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    42.
    发明专利
    未知

    公开(公告)号：DE50207217D1

    公开(公告)日：2006-07-27

    申请号：DE50207217

    申请日：2002-09-30

    Applicant: BASF AG

    Inventor： GASCHLER WOLFGANG ,  SCHAEDLER VOLKER ,  MANDERS LAMBERTUS ,  WIRTH THOMAS ,  KROENER HUBERTUS

    IPC: C08F212/08 ,  C08F2/38 ,  C08F220/04 ,  C08F220/44 ,  C08F236/06 ,  C08F236/10 ,  C08F291/00 ,  C09D5/02 ,  C09D109/06 ,  C09D109/08 ,  C09D125/10 ,  D21H17/35 ,  D21H19/58

    Abstract: A process for preparing an aqueous styrene-butadiene polymer dispersion by free-radical aqueous emulsion polymerization of a monomer mixture M comprising styrene, butadiene, and if desired up to 30% by weight, based on 100% by weight of monomers, of ethylenically unsaturated comonomers other than styrene and butadiene; in a polymerization vessel by a monomer feed technique in the presence of a regulator system containing, based on 100% by weight of monomers, from 0.02 to 0.5% by weight of at least one hydrocarbon HC having from 6 to 20 carbon atoms, selected from compounds which on abstraction of a hydrogen atom form a pentadienyl radical or 1-phenylallyl radical, and alpha-methylstyrene dimer, and from 0.3 to 2% by weight of an organic compound S containing at least one SH group wherein at least 30%, preferably at least 50%, in particular at least 80%, and with particular preference the entirety (or >95%) of hydrocarbon HC is included in the initial charge to the polymerization vessel.

    43.
    发明专利
    未知

    公开(公告)号：AT329945T

    公开(公告)日：2006-07-15

    申请号：AT02779444

    申请日：2002-09-30

    Applicant: BASF AG

    Inventor： GASCHLER WOLFGANG ,  SCHAEDLER VOLKER ,  MANDERS LAMBERTUS ,  WIRTH THOMAS ,  KROENER HUBERTUS

    IPC: C08F2/38 ,  C08F212/08 ,  C08F220/04 ,  C08F220/44 ,  C08F236/06 ,  C08F236/10 ,  C09D5/02 ,  C09D109/06 ,  C09D109/08 ,  C09D125/10 ,  D21H19/58 ,  C08F291/00 ,  D21H17/35

    Abstract: A process for preparing an aqueous styrene-butadiene polymer dispersion by free-radical aqueous emulsion polymerization of a monomer mixture M comprising styrene, butadiene, and if desired up to 30% by weight, based on 100% by weight of monomers, of ethylenically unsaturated comonomers other than styrene and butadiene; in a polymerization vessel by a monomer feed technique in the presence of a regulator system containing, based on 100% by weight of monomers, from 0.02 to 0.5% by weight of at least one hydrocarbon HC having from 6 to 20 carbon atoms, selected from compounds which on abstraction of a hydrogen atom form a pentadienyl radical or 1-phenylallyl radical, and alpha-methylstyrene dimer, and from 0.3 to 2% by weight of an organic compound S containing at least one SH group wherein at least 30%, preferably at least 50%, in particular at least 80%, and with particular preference the entirety (or >95%) of hydrocarbon HC is included in the initial charge to the polymerization vessel.

    44.
    发明专利
    未知

    公开(公告)号：DE50012127D1

    公开(公告)日：2006-04-13

    申请号：DE50012127

    申请日：2000-02-10

    Applicant: BASF AG

    Inventor： KROENER HUBERTUS ,  KLOSTERMANN RAINER ,  BIRK JOACHIM ,  HAUFF THOMAS

    IPC: C08F2/22 ,  B01J19/00 ,  B01J19/18 ,  C08F2/01 ,  C08G85/00

    Abstract: A method of on-line monitoring and control of monomer conversion in emulsion polymerization includes continuously balancing, as from an initialization time, the heat QIN, introduced into the reactor, the reaction enthalpy QRE introduced via the monomer feed, and the heat which has been removed from the reactor QOUT, and calculating an amount of heat which has not been removed QAD which would lead to an increase in the internal temperature and the internal pressure of the reactor in the event of a spontaneous adiabatic reaction. A check is carried out as to whether the potential adiabatic temperatures and pressures always lie below prescribed upper limits. If the upper limits are exceeded, the monomer feed to the reactor is throttled back or interrupted.

    45.
    发明专利
    未知

    公开(公告)号：DE10148497A1

    公开(公告)日：2003-04-17

    申请号：DE10148497

    申请日：2001-10-01

    Applicant: BASF AG

    Inventor： MANDERS LAMBERTUS ,  WIRTH THOMAS ,  GASCHLER WOLFGANG ,  KROENER HUBERTUS

    IPC: C08F2/38 ,  C08F212/08 ,  C08F236/06

    Abstract: The invention relates to a method for producing an aqueous styrene-butadiene polymer dispersion by carrying out a radical aqueous emulsion polymerization of a monomer mixture M containing: 40 to 80 wt. % of styrene depicted as Monomer M1; 20 to 60 wt. % of butadiene depicted as monomer M2, and; 0 to 40 wt. %, with regard to 100 wt. % of the monomers, of ethylenically unsaturated comonomers M3 that differ from styrene and butadiene. The polymerization is carried out according to a monomer feeding method in the presence of 0.05 to 0.5 wt. %, with regard to 100 wt. % of the monomers, of at least one hydrocarbon KW selected among compounds having 6 to 20 C atoms that form a pentadienyl radical or a 1-phenylallyl radical when a hydrogen atom is abstracted, and the alpha -methylstyrene dimer. The inventive method is characterized in that the monomers to be polymerized are introduced within three hours of the polymerization reaction.

    46.
    发明专利
    未知

    公开(公告)号：DE10148494A1

    公开(公告)日：2003-04-17

    申请号：DE10148494

    申请日：2001-10-01

    Applicant: BASF AG

    Inventor： GASCHLER WOLFGANG ,  SCHAEDLER VOLKER ,  MANDERS LAMBERTUS ,  WIRTH THOMAS ,  KROENER HUBERTUS

    IPC: C08F2/22 ,  C08F2/38 ,  C08F212/00 ,  C08F212/08 ,  C08F236/00 ,  C08F236/10 ,  C08F236/06

    Abstract: The invention relates to a method for producing an aqueous styrene-butadiene polymer dispersion by the radical aqueous emulsion-polymerisation of a monomer mixture M, containing: between 40 and 80 wt. % styrene as monomer M1; between 20 and 60 wt. % butadiene as monomer M2 and between 0 and 40 wt. %, (in relation to l00 wt. % monomers), of ethylenically unsaturated comonomers M3 that differ from styrene and butadiene, according to a monomer feed process in the presence of between 0.05 and 0.5 wt. %, (in relation to l00 wt. % monomers), of at least one hydrocarbon KW comprising between 6 and 20 C atoms, selected from compounds, which form a pentadienyl or a 1-phenylallyl radical during the abstraction of a hydrogen atom, or from alpha -methylstyrene dimers. Said method is characterised in that at least 30 % of the hydrocarbon KW is already present in the polymerisation vessel and the residual quantity of the hydrocarbon KW is fed to the polymerisation reaction during the course of the latter.

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