Acrylic pressure-sensitive adhesive and also adhesive tape furnished with acrylic pressure-sensitive adhesive

    公开(公告)号:US20240076529A1

    公开(公告)日:2024-03-07

    申请号:US18461352

    申请日:2023-09-05

    Applicant: TESA SE

    Abstract: An acrylic pressure-sensitive adhesive was to be provided that finds use especially in a reversible adhesive tape that is redetachable without leaving any residue, the adhesive tape having a particularly flat paper backing with high air permeability, and thus gives rise to particularly precise and flat paint edges when applied. This is achieved by an acrylic pressure-sensitive adhesive based on polymers having the following monomer composition:



    (a) 97% to 99% by weight of monomers from the group comprising 2-ethylhexyl acrylate or 2-octyl acrylate or n-heptyl acrylate or mixtures of at least two of said monomers,
    (b) 1% to 3% by weight of (meth)acrylic acid

    and further comprising a crosslinking system, wherein the ratio of the reactive crosslinking groups and the carboxy groups of (meth)acrylic acid (b) is less than or equal to 7% and wherein the polymers are produced by emulsion polymerization.





    The invention also provides an adhesive tape comprising a backing and—applied to at least one side of the backing—an acrylic pressure-sensitive adhesive of the invention in the form of a dried polymer dispersion and also the use of such an adhesive tape.

    WEATHERING-RESISTANT ADHESIVE WITH GOOD WET-OUT CAPACITY, AND ADHESIVE TAPES BASED THEREON

    公开(公告)号:US20190292416A1

    公开(公告)日:2019-09-26

    申请号:US16361731

    申请日:2019-03-22

    Applicant: tesa SE

    Abstract: Disclosed is an adhesive composition comprising: (a) at least one kind of a saturated vinylaromatic block copolymer, (b) at least one kind of a first tackifier resin, which is a hydrocarbon resin having a DACP≥+25° C. and an MMAP≥+60° C., and also either (c1) at least one kind of a second tackifier resin, having a DACP≤0° C. and an MMAP≤+30° C., and (d1) at least one kind of an aliphatic or cycloaliphatic alkyl ester as a plasticizer, or (c2) at least one kind of a second tackifier resin, having a DACP≤0° C. and an MMAP≤+30° C., and (d2) at least one kind of an aliphatic or cycloaliphatic alkyl ester as a plasticizer, and also (e) optionally further additives. The adhesive composition combines high ageing stability with exceptional aptitude for bonding on porous and also on fibrous materials.

    Adhesive tape for jacketing elongate items such as especially cable hamesses and method for jacketing

    公开(公告)号:US20210040355A1

    公开(公告)日:2021-02-11

    申请号:US16534312

    申请日:2019-08-07

    Applicant: tesa SE

    Abstract: The invention relates to an adhesive tape in particular for wrapping cables, consisting of a preferably textile carrier and of a pressure sensitive adhesive, applied on at least one side of the carrier, in the form of a dried polymer dispersion, the polymer having been synthesized from: (a) 70.0 to 90.0 wt % of n-butyl acrylate and/or 2-ethylhexyl acrylate (b) 10.0 to 20.0 wt % of one or more ethylenically unsaturated monomers, where at least 50.0 wt % of the ethylenically unsaturated monomers (monomer (b)) comprises methyl methacrylate (c) 0 to 10.0 wt % of a further ethylenically unsaturated monomer, different from monomer (b) (d) 0 to 5.0 wt % of an ethylenically unsaturated monomer having an acid or acid-anhydride function and the pressure sensitive adhesive comprises between 3 and 20 parts by weight of tackifiers (based on the mass of the dried polymer dispersion), the tackifiers having a softening point of more than 90° C. according to ASTM E29-99 (2009).

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