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    12.
    发明专利
    未知

    公开(公告)号：DE10148496A1

    公开(公告)日：2003-04-17

    申请号：DE10148496

    申请日：2001-10-01

    Applicant: BASF AG

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

    IPC: C08F2/22 ,  C08F2/16 ,  C08F2/38 ,  C08F212/00 ,  C08F236/00 ,  C08F236/10 ,  C08F212/08 ,  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 the concentration of the butadiene in the monomer feed is increased by at least 10 wt. % in relation to the monomers in the feed process, for a period of at least 1 % of the entire feed duration, when at least 70 % of the monomers to be polymerised have been fed to the polymerisation reaction.

    14.
    发明专利
    未知

    公开(公告)号：BR0008115A

    公开(公告)日：2001-11-06

    申请号：BR0008115

    申请日：2000-02-10

    Applicant: BASF AG

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

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

    METHOD FOR PRODUCING AQUEOUS STYRENE-BUTADIENE-IV POLYMER DISPERSIONS
    16.
    发明专利
    METHOD FOR PRODUCING AQUEOUS STYRENE-BUTADIENE-IV POLYMER DISPERSIONS 未知

    公开(公告)号：CA2461948C

    公开(公告)日：2011-03-15

    申请号：CA2461948

    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: The invention relates to a method for producing an aqueous styrene-butadiene polymer dispersion by means of radical aqueous emulsion polymerisation of a monomer mixture M containing styrene, butadiene, and optionally up to 30 wt. %, in relation to 100 wt. % of monomers, of ethylenically unsaturated comonomers other than styrene and butadiene. The reaction is carried out in a polymerisation vessel according to a monomer supply method, in the presence of a regulator system comprising, in relation to 100 wt. % of monomers, between 0.02 and 0.5 wt. % of at least one hydrocarbon KW having between 6 and 20 C atoms and being selected from compounds forming a pentadienyl radical or a 1-phenylallyl radical by means of abstraction of a hydrocarbon atom, an .alpha.-methylstyrene dimer, and between 0.3 and 2 wt. % of an organic compound S with at least one SH group. The inventive method is characterised in that at least 30 %, preferably at least 50 %, especially at least 80 %, and ideally the entire amount (or more than 95 %) of the hydrocarbon KW is present in the polymerisation vessel.

    METHOD FOR PRODUCING AQUEOUS STYRENE-BUTADIENE POLYMER DISPERSIONS
    17.
    发明专利
    METHOD FOR PRODUCING AQUEOUS STYRENE-BUTADIENE POLYMER DISPERSIONS 未知

    公开(公告)号：CA2461672C

    公开(公告)日：2011-03-15

    申请号：CA2461672

    申请日：2002-09-30

    Applicant: BASF AG

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

    IPC: C08F212/08 ,  C08F2/38 ,  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.

    20.
    发明专利
    未知

    公开(公告)号：AT327266T

    公开(公告)日：2006-06-15

    申请号：AT02777269

    申请日：2002-09-30

    Applicant: BASF AG

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

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

    Abstract: A process for preparing an aqueous styrene-butadiene polymer dispersion by free-radical aqueous emulsion polymerization of a monomer mixture M containing from 40 to 80% by weight of styrene as monomer M1, from 20 to 60% by weight of butadiene as monomer M2, and from 0 to 40% by weight, based on 100% by weight of monomers, of ethylenically unsaturated comonomers M3 other than styrene and butadiene by a monomer feed technique in the presence of from 0.05 to 0.5% by weight, based on 100% by weight of monomers, of at least one hydrocarbon HC selected from compounds having 6 to 20 carbon atoms which on abstraction of a hydrogen atom form a pentadienyl radical or a 1-phenylallyl radical and from alpha-methylstyrene dimer comprises supplying the monomers to be polymerized to the polymerization reaction over the course of 3 hours.

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