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    22.
    发明专利
    未知

    公开(公告)号：FI98921B

    公开(公告)日：1997-05-30

    申请号：FI895843

    申请日：1989-12-07

    Applicant: BASF AG

    Inventor： REHMER GERD ,  BOETTCHER ANDREAS ,  AUCHTER GERHARD

    IPC: C08F212/08 ,  C08F2/46 ,  C08F20/10 ,  C08F20/26 ,  C08F20/52 ,  C08F212/00 ,  C08F220/18 ,  C08F220/30 ,  C08F220/58 ,  C08F290/00 ,  C08F290/06 ,  C08F299/00 ,  C09D4/00 ,  C09D133/04 ,  C09J4/00 ,  C09J133/04 ,  C08L33/04

    Abstract: UV-crosslinkable materials based on (meth)acrylate copolymers contain copolymerized monomers of the general formula I (I) where R is a certain alkyl radical, an aryl radical or a radical R1 and R1 is a radical where R2 to R6 are each H, alkyl, a non-ortho OH group, OCH3, OC2H3, SH, SCH3, Cl, F, CN, COOH, COO(C1-C3-alkyl), CF3, N(CH3)2, N(C2H5)2, N(CH3)C6H5, +N(CH3)3X- or +N(CH3)XX-, where X- is an acid anion, and one or more of the radicals R2 to R6 are each a radical or or where Sp is one of the spacer groups of the following type and R', R'' and R''' are each H or a certain hydrocarbon, and where the radicals X may be identical or different and are each a divalent, alkylene radical, a cycloalkylene radical or phenylene radical, which are bonded directly to one another and/or are bonded to one another by identical or different groups Y, and Y is a divalent radical from the group consisting of and k and m are each from 1 to 10 and 1 and n are each from 0 to 25.

    25.
    发明专利
    未知

    公开(公告)号：DE50007787D1

    公开(公告)日：2004-10-21

    申请号：DE50007787

    申请日：2000-04-27

    Applicant: BASF AG

    Inventor： GERST MATTHIAS ,  AUCHTER GERHARD ,  SCHULER BERNHARD

    IPC: C08F220/12 ,  C09J7/02 ,  C09J133/06 ,  C09J133/08

    Abstract: Pressure-sensitive adhesives comprising an aqueous polymer dispersions wherein the polymer is composed offrom 50 to 99.9% by weight of at least one C1-C12 alkyl (meth)acrylate (monomers a)from 0.05 to 20% by weight of at least one vinylaromatic compound (monomers b)from 0.05 to 10% by weight of at least one ethylenically unsaturated hydroxy compound (monomers c)from 0 to 10% by weight of an ethylenically unsaturated acid or an acid anhydride (monomers d) andfrom 0 to 30% by weight of other ethylenically unsaturated compounds (monomers e)the weight percentages being based on the polymer, and the polymer dispersion comprising an emulsifier consisting to the extent of at least 5% by weight of aromatic carbon atoms (and called aromatic emulsifier for short) or an emulsifier mixture consisting to the extent of at least 10% by weight of an aromatic emulsifier.

    Production of aqueous polymer dispersions for use in adhesives, involves multi-stage emulsion polymerisation with or without adding more initiator and without cooling between stages
    27.
    发明专利
    Production of aqueous polymer dispersions for use in adhesives, involves multi-stage emulsion polymerisation with or without adding more initiator and without cooling between stages 未知

    公开(公告)号：DE10164183A1

    公开(公告)日：2003-07-10

    申请号：DE10164183

    申请日：2001-12-27

    Applicant: BASF AG

    Inventor： WULFF DIRK ,  CENTNER ALEXANDER ,  AUCHTER GERHARD

    IPC: C08F2/22 ,  C08F265/06 ,  C08F285/00 ,  C08F220/18

    Abstract: Aqueous polymer dispersions are produced by multi-stage emulsion polymerisation in which polymerisation in stage 2 and any further stages is carried out in presence of residual initiator from stage 1 or by adding more initiator and the temperature in the reactor is at least 70degreesC from the start of stage 1 to the end of the last stage. A method for the production of aqueous polymer dispersions by at least 2-stage aqueous emulsion polymerisation of unsaturated monomers involving (1) polymerisation of a first monomer mixture (M1) by the monomer-feed method in presence of a radical initiator (I1) to give an aqueous dispersion of polymer (P1), (2) further polymerisation by (2a) addition of a different monomer mixture (M2) in undiluted form to the dispersion and (2b) polymerisation of M2, and optionally (3) repetition of steps (2a) and (2b) in further stages (i), using a total amount of monomers (M2) which is 0.1-20 wt.% of the monomers (M1) polymerised in stage 1 and not adding (M2) before the addition of (M1) is complete. In this method, (a) polymerisation in stage 2 (and any further stages) is carried out in presence of residual initiator (I1) or by adding more (I1) and (b) the temperature in the reactor is at least 70degreesC from the start of stage 1 to the end of step 2b in the last stage. Independent claims are also included for (1) aqueous polymer dispersions obtained by this method (2) polymer powder obtained by evaporating volatile components from these dispersions.

    28.
    发明专利
    未知

    公开(公告)号：ES2158575T3

    公开(公告)日：2001-09-01

    申请号：ES97936671

    申请日：1997-07-29

    Applicant: BASF AG

    Inventor： SCHULER BERNHARD ,  AUCHTER GERHARD ,  TURK JOHANNES ,  NOORDIJK RIK ,  DOBBELAAR JOHANNES ,  BACHER REINHARD

    IPC: C08F220/12 ,  C09J7/04 ,  C09J133/06

    Abstract: A polymer which containsfrom 50 to 99.98% by weight of a C1-C12 alkyl (meth)acrylate a),from 0.02 to 10% by weight of a vinylaromatic compound b),from 0 to 10% by weight of an ethylenically unsaturated acid or of an ethylenically unsaturated acid anhydride c), andfrom 0 to 40% by weight of further monomers d), the percentages by weight being based on the polymer and the polymer being obtainable by polymerizing the monomers a) to d) in at least two stages which differ in their content of vinylaromatic compounds in such a way that the content of vinylaromatic compounds in the vinylaromatics-rich stage is at least 5 times as great as in the low-vinylaromatics stage.

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