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    PRODUCTION OF PRESSURE-SENSITIVE ADHESIVE TAPE AND APPARATUS THEREFOR
    1.
    发明专利
    PRODUCTION OF PRESSURE-SENSITIVE ADHESIVE TAPE AND APPARATUS THEREFOR 失效

    公开(公告)号：JPH10324852A

    公开(公告)日：1998-12-08

    申请号：JP13522998

    申请日：1998-05-18

    Applicant: BASF AG

    Inventor： MEYER-ROSCHER BERND DR ,  MATHAUER KLEMENS DR

    IPC: B05D7/24 ,  B05C11/10 ,  B65D75/06 ,  C09J7/02 ,  C09J133/00 ,  C09J175/04 ,  C09J183/04 ,  C09J201/00

    Abstract: PROBLEM TO BE SOLVED: To provide a process for producing a pressure-sensitive adhesive tape by using a tube filled with a pressure-sensitive adhesive. SOLUTION: A skin tube E filled with a pressure-sensitive adhesive composition is allowed to enter an apparatus C having a cylindrical member A. While the skin tube is traveling inside the cylindrical member, it is cut in the longer direction to form a skin tape H. The skin tape H is separated from the pressure sensitive adhesive composition so as to leave some adhesive composition on the skin tape. The separated pressure-sensitive adhesive composition I is discharged out of the apparatus through an exit. The skin tape separated from the pressure-sensitive adhesive and having a layer of the pressure-sensitive adhesive remaining unseparated is rolled up.

    3.
    发明专利
    未知

    公开(公告)号：DE19717877A1

    公开(公告)日：1998-10-29

    申请号：DE19717877

    申请日：1997-04-28

    Applicant: BASF AG

    Inventor： MAC KEE GRAHAM EDMUND DR ,  LAWRENZ SVEN ,  MATHAUER KLEMENS DR

    IPC: B01J14/00 ,  C08F2/00 ,  C08F2/01 ,  C08F2/16 ,  C08F2/18 ,  C08F12/08 ,  C08F20/12 ,  C08F20/44 ,  C08F291/00 ,  C08F20/18

    Abstract: The method used to polymerize a microsuspension enables continuous production of particular homopolymerizates and copolymerizates from at least one polymerizable monomer. The polymerization of the microsuspension, to which addition agents can be added depending on the desired application, is carried out in a tubular reactor at a temperature of at least 0 DEG C C in the presence of a hydrophobic radical polymerization initiator, resulting in particular homopolymerizates and copolymerizates of an average diameter d50 of at least 50 mu m. The polymerizates obtained by this method find applications as addition agents for thermoplastic moulding compounds, as copier toner components, as auxiliary agents for paper and leather, as coating agents for magnetic tapes and foils and as colour and paint components.

    Controlled production of aqueous polymer dispersion
    5.
    发明专利
    Controlled production of aqueous polymer dispersion 未知

    公开(公告)号：DE19735225A1

    公开(公告)日：1999-02-18

    申请号：DE19735225

    申请日：1997-08-15

    Applicant: BASF AG

    Inventor： FISCHER MICHAEL DR ,  MATHAUER KLEMENS DR ,  MORRISON BRADLEY RONALD DR ,  DURANT YVON DR

    IPC: C08F2/22 ,  C08F4/00

    Abstract: Production of aqueous polymer dispersions by radical initiated aqueous emulsion polymerisation of ethylenically unsaturated monomer(s) (I) comprises emulsifying (a) a mixture of (I) with radical initiator(s) and stable N-oxyl radical(s) or (b) a mixture of (I) with compound(s) which decompose on heating to give stable N-oxyl radicals and polymerisation initiating radical partners, with the aid of dispersants to give an aqueous emulsion with a disperse phase mainly comprising droplets with a diameter \} 500 nm, and then polymerising the emulsion at elevated temperature. Also claimed are the aqueous polymer dispersions.

    Production of aqueous polymer dispersion for adhesives, binders etc.
    6.
    发明专利
    Production of aqueous polymer dispersion for adhesives, binders etc. 未知

    公开(公告)号：DE19724915A1

    公开(公告)日：1998-12-17

    申请号：DE19724915

    申请日：1997-06-12

    Applicant: BASF AG

    Inventor： ZHAO CHENG-LE DR ,  ROSER JOACHIM DR ,  WISTUBA ECKEHARDT DR ,  MATHAUER KLEMENS DR ,  SCHULER BERNHARD DR

    IPC: C08F2/22 ,  C08F4/30 ,  C08F4/34 ,  C08F265/06 ,  C08F291/00 ,  C09D151/00 ,  C09J151/00 ,  C04B26/06 ,  C08F220/18 ,  C08J3/03 ,  C08J3/12 ,  C09D133/06 ,  C09D151/06 ,  C09J133/04 ,  D06M15/263 ,  D21H17/37

    Abstract: Production of aqueous polymer dispersions (I) comprises radical-initiated aqueous emulsion polymerisation of ethylenic monomers to give a dispersion of polymer (A) followed by radical polymerisation of other monomers in one or more subsequent stages (i) in the presence of polymer (A), with the following features: (a) polymer (A) has a Tg of Tg1, (b) the monomers polymerised in stages (i) are such that the isolated statistical (co)polymerisation of these monomers gives a polymer (i) with a Tg which approaches a limiting value of Tgi with increasing molecular weight, (c) for each Tg1 the difference Tgi - Tg1 = at least 10 deg C, (d) the amount of monomers polymerised in polymer (A) is 85-99.9 wt.% of the total amount (TM) polymerised in the entire process, (e) the total amount of monomers polymerised in all stages (i) is 0.1-15 wt.% of TM, (f) in each stage (i), the addition of monomer is carried out so that monomer conversion (polymerisation) (Ui) does not exceed 50 mol% of the amount already in the reactor at any time up to the end of addition, and (g) apart from monomers with two conjugated double bonds, the total amount of monomer used for the production of polymer (A) includes not more than 5 wt.% monomers with more than one unsaturated group. Also claimed are (1) dispersions (I) obtained by this process, (2) polymer powder obtained by spray drying (I), (3) polymers obtained by this process and (4) aqueous dispersions containing such polymers.

    7.
    发明专利
    未知

    公开(公告)号：DE19720705A1

    公开(公告)日：1998-11-19

    申请号：DE19720705

    申请日：1997-05-16

    Applicant: BASF AG

    Inventor： MEYER-ROSCHER BERND DR ,  MATHAUER KLEMENS DR

    IPC: B05D7/24 ,  B05C11/10 ,  B65D75/06 ,  C09J7/02 ,  C09J133/00 ,  C09J175/04 ,  C09J183/04 ,  C09J201/00 ,  B05D5/10 ,  B05C17/025

    Abstract: In a process for manufacturing adhesive strips a tubular sleeve filled with adhesive is moved under tension through a pipe-shaped apparatus(A) and slit along the length to form a flat strip(H). Most of the adhesive drains from the sleeve, the remainder adheres to the strip(H) which is then wound up. Process equipment comprises the pipe(A) with three or more openings, two slitting knives(F) and a strip wind-up arrangement(D). One opening receives the tubular sleeve, another forms an outlet for excess adhesive and the other incorporates a diverting roll(C).

    Production of aqueous polymer dispersion
    9.
    发明专利
    Production of aqueous polymer dispersion 未知

    公开(公告)号：DE19750159A1

    公开(公告)日：1999-05-20

    申请号：DE19750159

    申请日：1997-11-12

    Applicant: BASF AG

    Inventor： MATHAUER KLEMENS DR ,  KROENER HUBERTUS DR ,  KELLER ANDREAS ,  KASTENHUBER WALTER

    IPC: B01J19/00 ,  B01J19/18 ,  C08F2/01 ,  C08F2/22 ,  F28D1/06 ,  F28D9/04

    Abstract: Production of an aqueous polymer dispersion involves moving the reaction emulsion through an external cycle (9) leading from and returning to a reaction vessel. The cycle (9) has a shearing-deficient pump and a heat exchanger (8) having a laminar flow profile. Production of an aqueous polymer dispersion comprises radically polymerizing compounds (I) having individual solubility in water of at least 0.001 wt.%, and comprising polymer particles containing compounds (II), whose water solubility is less than 0.001 wt.%. An oil-in -water mixture (emulsion I) is produced from a mixture of compound (I) including the compounds (II). An Independent claim is also included for the apparatus used to carry out production process.

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