| 摘要 |
<p>Pressure-sensitive adhesive material comprising block copolymers based at least partly on (meth)acrylic acid derivatives and containing the unit P(A)-P(B)-P(A), in which at least one of the blocks P(A) has a refractive index (RI) of 1.58 or more, block P(B) has an RI of 1.43 or more and the material itself has an RI of 1.52 or more. Pressure-sensitive adhesive based on at least 50% block copolymer(s), at least one of which is based at least partly on (meth)acrylic acid derivatives and comprises the unit P(A)-P(B)-P(A). Blocks P(A) are homo- or co-polymer blocks with a softening point (ST) of 0 to +175degreesC, derived from monomers of group (A), and block P(B) is a homo- or co-polymer block with an ST of -130 to +10degreesC, derived from monomers (B); P(A) and P(B) are not homogeneously miscible with one another at 25degreesC. Material (I) has a refractive index (RI) of at least 1.52 at 25degreesC, at least one of the blocks P(A) has an RI of at least 1.58 at 25degreesC and block P(B) has an RI of at least 1.43 at 25degreesC.</p> |
