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    Aq. polymer dispersions, useful for prodn. of self-adhesive tape, etc. - contain acrylic] ester] copolymer, rosin, poly:isocyanate, emulsifiers and water
    15.
    发明专利
    Aq. polymer dispersions, useful for prodn. of self-adhesive tape, etc. - contain acrylic] ester] copolymer, rosin, poly:isocyanate, emulsifiers and water 未知

    公开(公告)号：DE4007637A1

    公开(公告)日：1991-09-12

    申请号：DE4007637

    申请日：1990-03-10

    Applicant: BASF AG

    Inventor： PFOEHLER PETER DR ,  FIETZEK HERBERT ,  ZETTL ALEXANDER

    IPC: C08G18/40 ,  C08G18/62 ,  C08G18/70 ,  C08L93/04 ,  C09J7/02 ,  C09J133/08 ,  C09J175/00

    Abstract: Aq. polymer dispersions (I) are claimed, contg. (A) 20-60 wt.% polymer(s) (A) with Tg (-)60 - (-)10 deg.C, (B) 5-20 wt.% rosin, rosin derivs. or mixts., (C) 0.1-6 wt.% isocyanate(s) with 2-3 NCO gps., (D) emulsifiers and (E) at least 25 wt.% water; (A) are polymers of (a) 70-100 pts.wt. non-tert. 4-12C alkyl acrylate(s), (b) 0.1-5 pts.wt. 3-5C mono-unsatd. mono- or di-carboxylic acid(s), amides (opt. partly or completely N-substd. with 1-4C alkyl and/or alkylol gps.) or esters of (meth)acrylic acid with 2-5C polyhydric alcohols, and (c) 1-30 pts.wt. 1-3C alkyl acrylates, 1-8C alkyl methacrylates, vinyl 2-4C carboxylates, (meth)acrylonitrile and/or styrene. (I) are produced by mixing components (B) and (C) with an aq. dispersion of (A). Specifically (a) is n-butyl, iso-butyl and/or 2-ethylhexyl acrylate, and (b) is acrylic and/or methacrylic acid; (A) has K value 70-110 in THF at 25 deg.C; (I) contains 0.2-0.7 wt.% isocyanate and has wt. ratio (A):(B) = (8:2)-(6:4); the aq. dispersion of (A) is mixed with an aq. dispersion of (B) and, as component (C), an aliphatic polyisocyanate (II) in the form of a polyisocyanate prepn. which contains (II) with NCO functionality 2-3 and, as emulsifier, a reaction prod. of (II) with a mono- or poly-hydric non-ionic polyalkylene-ether-alcohol contg. at least one polyether chain with at least 10 ethylene oxide units (III). USE/ADVANTAGE - (I) are useful for the prodn. of self-adhesive articles (claimed); also claimed is adhesive tape consisting of a PP substrate coated with a film of (I). The invention provides self-adhesive tape, etc. with a combination of high tackiness, high adhesive strength and high cohesion, as required, esp. for packaging tape, etc..

    CONTACT ADHESIVE DISPERSIONS FOR THE PRODUCTION OF SELF-ADHESIVE ARTICLES
    16.
    发明专利
    CONTACT ADHESIVE DISPERSIONS FOR THE PRODUCTION OF SELF-ADHESIVE ARTICLES 未知

    公开(公告)号：CA1245794A

    公开(公告)日：1988-11-29

    申请号：CA455059

    申请日：1984-05-24

    Applicant: BASF AG

    Inventor： DRUSCHKE WOLFGANG ,  KAST HANS ,  ZETTL ALEXANDER

    IPC: C08L33/00 ,  C08K5/24 ,  C08L33/02 ,  C08L33/04 ,  C08L33/08 ,  C09J133/04 ,  C09J133/08 ,  C09J3/14

    Abstract: Contact adhesive dispersions contain (A) an aqueous dispersion of a copolymer A which has a glass transition temperature below 0.degree.C and consists of (a) from 50 to 99 % by weight of esters of acrylic acid with non-tertiary alkanols, (b) from 0 to 50 % by weight of esters of acrylic or methacrylic acid and/or vinyl esters and/or (meth)acrylonitrile and/or styrene and/or tert.butyl acrylate, (c) from 0.5 to 5 % by weight of monoolefinitally unsaturated carboxylic acids and/or their amides which are unsubstituted or substituted at the nitrogen atoms by alkyl and/or alkylol radicals, and/or hydroxyalkyl (meth)acrylates, and (d) from 0.5 to 5% by weight of carbonylcontaining monomers and (8) from 0.05 to 2 moles of a water-soluble dihydrazine compound per mole of carbonyl groups present in the copolymer A.

    20.
    发明专利
    未知

    公开(公告)号：FI841947A

    公开(公告)日：1984-11-28

    申请号：FI841947

    申请日：1984-05-15

    Applicant: BASF AG

    Inventor： DRUSCHKE WOLFGANG ,  KAST HANS ,  ZETTL ALEXANDER

    IPC: C08L33/00 ,  C08K5/24 ,  C08L33/02 ,  C08L33/04 ,  C08L33/08 ,  C09J133/04 ,  C09J133/08 ,  C09J

    Abstract: Contact adhesive dispersions contain (A) an aqueous dispersion of a copolymer A which has a glass transition temperature below 0 DEG C. and consists of (a) from 50 to 99% by weight of esters of acrylic acid with non-tertiary alkanols, (b) from 0 to 50% by weight of esters of acrylic or methacrylic acid and/or vinyl esters and/or (meth)acrylonitrile and/or styrene and/or tert.-butyl acrylate, (c) from 0.5 to 5% by weight of monoolefinically unsaturated carboxylic acids and/or their amides which are unsubstituted or substituted at the nitrogen atoms by alkyl and/or alkylol radicals, and/or hydroxyalkyl (meth)acrylates, and (d) from 0.5 to 5% by weight of carbonyl-containing monomers and (B) from 0.05 to 2 moles of a water-soluble dihydrazine compound per mole of carbonyl groups present in the copolymer A.

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