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Block copolymer hot-melt processable adhesives, methods of their preparation, and articles therefrom

  • US 6,734,256 B1
  • Filed: 09/25/2000
  • Issued: 05/11/2004
  • Est. Priority Date: 12/29/1998
  • Status: Expired due to Term
First Claim
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1. A composition comprising:

  • 100 parts by weight of at least one block copolymer comprising at least two A blocks and at least one B block, wherein the A block is derived from at least one monoethylenically unsaturated monomer selected from the group consisting of (meth)acrylates, styrenes and vinyl esters, and wherein the B block is derived from at least one monoethylenically unsaturated monomer selected from the group consisting of (meth)acrylates, acrylamides and vinyl esters, and the boundaries between microdomains comprising the A blocks and a continuous phase comprising the B blocks are essentially free of tapered structures; and

    at least 40 parts by weight of at least one tackifier based on total weight of the block copolymer;

    wherein said composition is a hot melt processable adhesive.

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