31.
    发明专利
    未知

    公开(公告)号:PT97218B

    公开(公告)日:1998-07-31

    申请号:PT9721891

    申请日:1991-04-01

    Applicant: BASF AG

    Abstract: Copolymers suitable for use as temporary surface protection for two- or three-dimensional structures and as sizing agents are based on C1-C8-alkyl acrylates and/or methacrylates and are obtainable by free radical emulsion or solution polymerization of A) from 50 to 95% by weight of a C1-C8-alkyl acrylate or methacrylate, B) from 5 to 20% by weight of an unsaturated carboxylic acid or anhydride, C) from 0 to 20% by weight of further water-soluble comonomer, and D) from 0 to 10% by weight of other comonomer in the presence of E) from 2 to 60 parts by weight of a polyvinyl alcohol per 100 parts by weight of the monomer mixture of A) to D).

    Binder mixtures for paper-coating materials

    公开(公告)号:AU679836B2

    公开(公告)日:1997-07-10

    申请号:AU1575595

    申请日:1995-01-23

    Applicant: BASF AG

    Abstract: PCT No. PCT/EP95/00224 Sec. 371 Date Aug. 5, 1996 Sec. 102(e) Date Aug. 5, 1996 PCT Filed Jan. 23, 1995 PCT Pub. No. WO95/21294 PCT Pub. Date Aug. 10, 1995Binders for papercoating slips which permit uniform printability contain a polymer prepared by the seed procedure and comprising from 1 to 49% by weight of a polymer seed A) having a glass transition temperature of from -80 DEG to +25 DEG C. and based on esters of acrylic acid or methacrylic acid, and from 51 to 99% by weight of ethylenically unsaturated monomers B), from 10 to 100% by weight of which monomers are butadiene, the polymer seed A being added before or during the polymerization of the ethylenically unsaturated monomers.

    Binder mixtures for paper-coating materials

    公开(公告)号:AU1575595A

    公开(公告)日:1995-08-21

    申请号:AU1575595

    申请日:1995-01-23

    Applicant: BASF AG

    Abstract: PCT No. PCT/EP95/00224 Sec. 371 Date Aug. 5, 1996 Sec. 102(e) Date Aug. 5, 1996 PCT Filed Jan. 23, 1995 PCT Pub. No. WO95/21294 PCT Pub. Date Aug. 10, 1995Binders for papercoating slips which permit uniform printability contain a polymer prepared by the seed procedure and comprising from 1 to 49% by weight of a polymer seed A) having a glass transition temperature of from -80 DEG to +25 DEG C. and based on esters of acrylic acid or methacrylic acid, and from 51 to 99% by weight of ethylenically unsaturated monomers B), from 10 to 100% by weight of which monomers are butadiene, the polymer seed A being added before or during the polymerization of the ethylenically unsaturated monomers.

    METHOD FOR PRODUCING AQUEOUS STYRENE-BUTADIENE-IV POLYMER DISPERSIONS

    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

    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

    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

    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.

    38.
    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

    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.

    METHOD FOR PRODUCING AQUEOUS STYRENE-BUTADIENE POLYMER DISPERSIONS III

    公开(公告)号:CA2461947A1

    公开(公告)日:2003-04-10

    申请号:CA2461947

    申请日:2002-09-30

    Applicant: BASF AG

    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 at least 30 % of the hydrocarbo n KW is already present in the polymerisation vessel and the residual quantity of the hydrocarbon KW is fed to the polymerisation reaction during the cours e of the latter.

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