×

Pressure sensitive adhesive and its preparation

  • US 6,887,919 B2
  • Filed: 02/03/2003
  • Issued: 05/03/2005
  • Est. Priority Date: 03/19/2002
  • Status: Expired due to Term
First Claim
Patent Images

1. A double-sided stretchable pressure sensitive adhesive sheet strip, which, when bonded to a substrate is detachable from said substrate by stretching, said pressure sensitive adhesive sheet strip being formed from a composition comprising a mixture of:

  • a) a styrene block copolymer having a star-shaped structure and a molecular weight Mw of more than 300,000 g/mol, or having elastomer blocks which contain more than 30% by weight of 1,2-linked diene in their block structure, and which is crosslinkable by exposure to UV-light or electron beams, and b) one or more block copolymers having polyvinylaromatic blocks and elastomer blocks, the polyvinylaromatic block content being greater than 20% by weight, and c) one or more tackifier resins.

View all claims
  • 3 Assignments
Timeline View
Assignment View
    ×
    ×