• Patent Title: PRESSURE-SENSITIVE ADHESIVE COMPOUND AND REDETACHABLE SELF-ADHESIVE PRODUCTS COMPRISING THE PRESSURE-SENSITIVE ADHESIVE COMPOUND
  • Application No.: US18899030
    Application Date: 2024-09-27
  • Publication No.: US20250101271A1
    Publication Date: 2025-03-27
  • Inventor: Thilo DOLLASEJulia GARBERSDörte VON ALLWÖRDEN
  • Applicant: TESA SE
  • Applicant Address: DE Norderstedt
  • Assignee: TESA SE
  • Current Assignee: TESA SE
  • Current Assignee Address: DE Norderstedt
  • Priority: DE102023126363.3 20230927
  • Main IPC: C09J7/38
  • IPC: C09J7/38 C09J7/25 C09J153/02
PRESSURE-SENSITIVE ADHESIVE COMPOUND AND REDETACHABLE SELF-ADHESIVE PRODUCTS COMPRISING THE PRESSURE-SENSITIVE ADHESIVE COMPOUND
Abstract:
Pressure-sensitive adhesive compound containing: a) at least 28% by weight and at most 60% by weight of an elastomer component, wherein i. the elastomer component contains 30 to 64% by weight or at least 60% by weight and preferably at most 90% by weight, based in each case on the elastomer component, of at least one hydrogenated polyvinylaromatic-polydiene block copolymer having a polyvinylaromatic fraction of at least 18% by weight and a peak molecular weight of 100000 to 500000 g/mol, determined according to GPC (Test Ia), ii. the polydiene blocks are substantially fully hydrogenated, iii. the hydrogenated polyvinylaromatic-polydiene block copolymer has an ABA structure, (AB)nZ structure with n=2 or radial (AB)n structure or radial (AB)n-Z structure with n≥3, wherein A=polyvinylaromatic, B=ethylene and butylene or ethylene and propylene and Z=derivative of a coupling substance, and wherein the ethylene fraction in the B blocks is preferably at least 50% by weight, and iv. the elastomer component contains 36% by weight, preferably 36 to 70% by weight, and preferably not more than 50% by weight, more preferably not more than 45% by weight, of at least one kind of a hydrogenated diblock copolymer having an A′B′ structure or (A′B′)nZ structure with n=1, wherein A′=polyvinylaromatic, B′=ethylene and butylene or ethylene and propylene, Z=derivative of a coupling substance, and A′=A and B′=B are possible, b) a tackifier resin component, c) optionally a plasticizer component, d) optionally at least 2.5% by weight to 22% by weight, preferably at least 4% by weight up to 18% by weight, of a reinforcing component which is at least one resin having an MMAP value between −10° C. and +30° C., preferably between 0° C. and +20° C., and a softening point of at least 140° C., e) optionally further adjuvants, the fraction of the elastomer component being based on the total weight of the pressure-sensitive adhesive compound.
Information query
Patent Agency Ranking
0/0