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    METHOD FOR PRODUCING AQUEOUS STYRENE-BUTADIENE-IV POLYMER DISPERSIONS
    35.
    发明专利
    METHOD FOR PRODUCING AQUEOUS STYRENE-BUTADIENE-IV POLYMER DISPERSIONS 未知

    公开(公告)号：CA2461948A1

    公开(公告)日：2003-04-10

    申请号：CA2461948

    申请日：2002-09-30

    Applicant: BASF AG

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

    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: 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 wi th at least one SH group. The inventive method is characterised in that at leas t 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 II
    36.
    发明专利
    METHOD FOR PRODUCING AQUEOUS STYRENE-BUTADIENE POLYMER DISPERSIONS II 未知

    公开(公告)号：CA2461675A1

    公开(公告)日：2003-04-10

    申请号：CA2461675

    申请日：2002-09-30

    Applicant: BASF AG

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

    IPC: C08F2/22 ,  C08F2/16 ,  C08F2/38 ,  C08F212/00 ,  C08F236/00 ,  C08F236/10 ,  C08F212/08

    Abstract: The invention relates to a method for producing an aqueous styrene-butadiene polymer dispersion by the radical aqueous emulsion-polymerisation of a monom er mixture M, containing: between 40 and 80 wt. % styrene as monomer M1; betwee n 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 atom s, 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 bee n fed to the polymerisation reaction.

    37.
    发明专利
    未知

    公开(公告)号：TR200102319T2

    公开(公告)日：2001-11-21

    申请号：TR200102319

    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.

    38.
    发明专利
    未知

    公开(公告)号：DE59704544D1

    公开(公告)日：2001-10-11

    申请号：DE59704544

    申请日：1997-06-30

    Applicant: BASF AG

    Inventor： MATHAUER KLEMENS ,  MAECHTLE WALTER ,  MC KEE EDMUND ,  KROENER HUBERTUS

    IPC: C08F2/00 ,  C08F2/22 ,  C08F2/24 ,  C08F2/38

    Abstract: PCT No. PCT/EP97/03397 Sec. 371 Date Oct. 28, 1998 Sec. 102(e) Date Oct. 28, 1998 PCT Filed Jun. 30, 1997 PCT Pub. No. WO98/02466 PCT Pub. Date Jan. 22, 1998A process for preparing an aqueous polymer dispersion by free-radically initiated polymerization of free-radically polymerizable compounds I with moderate solubility in water, whose disperse polymer particles contain not only compounds I but also compounds II with a very low solubility in water where a mixture consisting of a portion of the compounds I and consisting of the compounds II is used to produce an aqueous emulsion I with a droplet size /=1000 nm.

    METHOD FOR PRODUCING AQUEOUS STYRENE-BUTADIENE POLYMER DISPERSIONS III
    39.
    发明专利
    METHOD FOR PRODUCING AQUEOUS STYRENE-BUTADIENE POLYMER DISPERSIONS III 未知

    公开(公告)号：CA2461947C

    公开(公告)日：2011-05-24

    申请号：CA2461947

    申请日：2002-09-30

    Applicant: BASF AG

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

    IPC: C08F2/22 ,  C08F212/08 ,  C08F2/38 ,  C08F212/00 ,  C08F236/00 ,  C08F236/06 ,  C08F236/10 ,  C08F291/00

    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.

    METHOD FOR PRODUCING AQUEOUS STYRENE-BUTADIENE POLYMER DISPERSIONS II
    40.
    发明专利
    METHOD FOR PRODUCING AQUEOUS STYRENE-BUTADIENE POLYMER DISPERSIONS II 未知

    公开(公告)号：CA2461675C

    公开(公告)日：2010-09-21

    申请号：CA2461675

    申请日：2002-09-30

    Applicant: BASF AG

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

    IPC: C08F2/22 ,  C08F212/08 ,  C08F2/16 ,  C08F2/38 ,  C08F212/00 ,  C08F236/00 ,  C08F236/10

    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.

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