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    4.
    发明专利
    未知

    公开(公告)号：BR0212868A

    公开(公告)日：2004-09-14

    申请号：BR0212868

    申请日：2002-09-30

    Applicant: BASF AG

    Inventor： GASCHLER WOLFGANG ,  SCHODLER VOLKER ,  MANDERS LAMBERTUS ,  WIRTH THOMAS ,  NER HUBERTUS KR

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

    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 having 6 to 20 carbon atoms, which is selected from compounds which on abstraction of a hydrogen atom form a pentadienyl radical or a 1-phenylallyl radical and from alpha-methylstyrene dimer comprises including at least 30% of the hydrocarbon HC in the initial charge to the polymerization vessel and supplying the remainder of the hydrocarbon HC to the polymerization reaction in the course of that reaction.

    5.
    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.

    Method for producing aqueous styrene-butadiene-IV polymer dispersions
    9.
    发明专利
    Method for producing aqueous styrene-butadiene-IV polymer dispersions 未知

    公开(公告)号：AU2002342780B2

    公开(公告)日：2007-11-15

    申请号：AU2002342780

    申请日：2002-09-30

    Applicant: BASF AG

    Inventor： MANDERS LAMBERTUS ,  WIRTH THOMAS ,  SCHADLER VOLKER ,  KRONER HUBERTUS ,  GASCHLER WOLFGANG

    IPC: C08F212/08 ,  C08F2/38 ,  C08F220/04 ,  C08F220/44 ,  C08F236/06 ,  C08F236/10 ,  C09D5/02 ,  C09D109/06 ,  C09D109/08 ,  C09D125/10 ,  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.

    Method for producing aqueous styrene-butadiene polymer dispersions
    10.
    发明专利
    Method for producing aqueous styrene-butadiene polymer dispersions 未知

    公开(公告)号：AU2002338845B2

    公开(公告)日：2007-11-08

    申请号：AU2002338845

    申请日：2002-09-30

    Applicant: BASF AG

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

    IPC: C08F212/08 ,  C08F2/38 ,  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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