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：US20230295473A1

公开(公告)日：2023-09-21

申请号：US18021301

申请日：2021-08-16

Applicant: tesa SE

Inventor： Jos TASCHE ,  Andre RELLMANN-SPRINK

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

CPC classification number: C09J7/385 ,  C09J133/08 ,  C09J133/10

Abstract: Disclosed is a pressure-sensitive adhesive composition which exhibits good adhesive forces, in particular on polar adhesive substrates, and good shear strength, and a significant proportion of which can be produced from bio-based raw materials. The pressure-sensitive adhesive composition comprises: at least one copolymer which can be traced to a monomer composition comprising a) 45-75 wt. % of at least one monomer selected from i-amyl acrylate, n-heptyl acrylate, and 2-octyl acrylate, b) 24-50 wt. % of at least one alkyl (meth)acrylate, the alcohol component of which has 1 to 4 carbon atoms, and c) 0.5 to 10 wt. % of acrylic acid; and at least one adhesive force-enhancing resin. Also disclosed is an adhesive tape comprising a carrier material and the pressure-sensitive adhesive composition; and the use of the pressure-sensitive adhesive composition or the adhesive tape to produce adhesive bonds in electronic, optical and/or precision mechanical devices.

公开(公告)号：US20230374354A1

公开(公告)日：2023-11-23

申请号：US18129435

申请日：2023-03-31

Applicant: tesa SE

Inventor： Jos TASCHE ,  Imke SCHWARZ ,  Thilo DOLLASE ,  Julia GARBERS ,  Jan Ole POEHLS

IPC: C09J153/02 ,  C09J7/38 ,  C09J7/24 ,  B32B27/32 ,  B32B27/40

CPC classification number: C09J153/025 ,  C09J7/387 ,  C09J7/243 ,  B32B27/32 ,  B32B27/40 ,  C09J2301/502 ,  C09J2301/302 ,  B32B2255/12 ,  B32B2255/26 ,  B32B27/10

Abstract: Self-adhesive product redetachable by extensive stretching comprises a pressure-sensitive adhesive comprising: a) an elastomer component, where i. the elastomer component comprises a hydrogenated polyvinylaromatic-polydiene block copolymer described herein, ii. the polydiene blocks are substantially fully hydrogenated, iii. the hydrogenated polyvinylaromatic-polydiene block copolymer has a construction described herein, and iv. the elastomer component comprises a hydrogenated diblock copolymer having a construction described herein, b) a tackifying resin component, c) optionally a plasticizer, d) optionally further adjuvants, and also at least one ply of a temporary carrier material.