公开(公告)号：US20230312994A1

公开(公告)日：2023-10-05

申请号：US18128627

申请日：2023-03-30

Applicant: tesa SE

Inventor： Thilo DOLLASE ,  Julia BEFUß ,  Jan Ole PÖHLS ,  Julia GARBERS

IPC: C09J7/38 ,  C09J133/10 ,  C09J11/08 ,  C09J7/26

CPC classification number: C09J7/385 ,  C09J133/10 ,  C09J11/08 ,  C09J7/26 ,  C09J2301/122 ,  C09J2301/302 ,  C09J2301/408 ,  C09J2301/312

Abstract: Adhesive tapes suitable for bonding to clearcoat materials and exhibiting a good shear strength and a bond strength compatible with requirements. Methods apply the adhesive tapes onto clearcoat materials. The adhesive tapes comprise a carrier layer and a layer of pressure-sensitive adhesive, arranged on the outside in the structure of the adhesive tape. The layer of pressure-sensitive adhesive comprises: at least one polymer selected from poly(meth)acrylates and polydiene block copolymers, or at least one blend of at least one poly(meth)acrylate and at least one polydiene block copolymer; and a tackifier resin component comprising at least one terpene phenolic resin, wherein the terpene phenolic resin has a softening temperature as determined by the ring-and-ball method according to ASTM E28, of not more than 140° C.

公开(公告)号：US20240124751A1

公开(公告)日：2024-04-18

申请号：US18187350

申请日：2023-03-21

Applicant: TESA SE

Inventor： Thilo DOLLASE ,  Jos TASCHE ,  Jan Ole PÖHLS

IPC: C09J7/38 ,  C09J7/26 ,  C09J11/08 ,  C09J153/02

CPC classification number: C09J7/387 ,  C09J7/26 ,  C09J11/08 ,  C09J153/025 ,  C09J2301/302 ,  C09J2301/408

Abstract: The invention relates to a pressure-sensitive adhesive comprising a) at least 38 wt % and at most 58 wt % of an elastomer component, where i) the elastomer component comprises at least 60 wt %, based on the elastomer component, of hydrogenated polyvinylaromatic-polydiene block copolymer having a polyvinylaromatic fraction of at least 18 wt % and a peak molecular weight of 80 000 to 500 000 g/mol, determined by GPC (Test I); ii) the polydiene blocks are substantially fully hydrogenated; and iii) the hydrogenated polyvinylaromatic-polydiene block copolymer has an ABA construction, (AB)nZ construction with n=2 or radial (AB)n construction or radial (AB)n-Z construction with n≥3, where A=polyvinylaromatic and B=ethylene and butylene or ethylene and propylene, and Z=derivative of a coupling substance, and where the ethylene fraction in the B blocks is at least 50 wt %; b) a tackifier resin component, c) a plasticizer component, and d) optionally further adjuvants, where the fraction of the elastomer component is based on the total weight of the pressure-sensitive adhesive.

公开(公告)号：US20220195260A1

公开(公告)日：2022-06-23

申请号：US17598676

申请日：2020-03-23

Applicant: TESA SE

Inventor： Michael MAYER ,  Jan Ole PÖHLS ,  Thomas SCHUBERT

IPC: C09J7/38 ,  C09J153/02 ,  C09J11/04

Abstract: The invention relates to an adhesive strip which can be detached substantially on the adhesion plane in a residue-free and nondestructive manner by stretching, said strip consisting of one or more adhesive material layers and optionally one or more intermediate carrier layers, at least one of the adhesive materials layers containing at least one filler, the primary particles of which can be individually separated, wherein the primary particles (i) are substantially spherical and (ii) have an average diameter d(0.5) of less than 10 μm, and the ratio of the average diameter d(0.5) of the primary particles to the thickness of the adhesive material layer in which the primary particles are contained is less than 1:2. The invention also relates to the production and use of said adhesive strip.