Patent ID: 8129470

Claim:
A blend of at least two components K1 and K2, each component being based on at least one block copolymer C1 or C2 respectively, the at least one block copolymer C1 of component K1 consisting of one or more units of P(A1)-P(B1)-P(A1), where P(A1) independently at each occurrence represents homopolymer or copolymer blocks of monomers A1, the polymer blocks P(A1) each having a softening temperature in the range from +20° C. to +175° C., P(B1) represents a homopolymer or copolymer block of monomers B1, the polymer block P(B1) having a softening temperature in the range from −130° C. to +10° C., the polymer blocks P(A1) and P(B1) are not homogeneously miscible with one another, the at least one block copolymer C2 of component K2 consisting of one or more units of P(B2)-P(A2)-P(B2), where P(A2) represents a homopolymer or copolymer block of monomers A2, the polymer block P(A2) having a softening temperature in the range from +20° C. to +175° C., P(B2) independently at each occurrence represents homopolymer or copolymer blocks of monomers B2, the polymer blocks P(B2) each having a softening temperature in the range from −130° C. to +10° C., the polymer blocks P(A2) and P(B2) are not homogeneously miscible with one another, wherein the polymer blocks P(A1) and the polymer blocks P(A2) possess an identical homopolymer and/or copolymer composition and the polymer blocks P(B1) and the polymer blocks P(B2) possess an identical homopolymer and/or copolymer composition and the blend forming an at least two-phase system.