초록 ▼

TPE's which comprise A blocks or B blocks or both A blocks and B blocks, which are crystalline and in which at least a part of the crystallinity result from the presence of crystallizable side chains. Such crystalline blocks are referred to as SCC blocks. TPE's containing SCC A blocks are novel and

TPE's which comprise A blocks or B blocks or both A blocks and B blocks, which are crystalline and in which at least a part of the crystallinity result from the presence of crystallizable side chains. Such crystalline blocks are referred to as SCC blocks. TPE's containing SCC A blocks are novel and as such form part of the present invention. The invention also includes processes, compositions, shaped articles and assemblies which make use of TPE's containing SCC A blocks.

대표청구항 ▼

[ We claim:] [1.] A pressure-sensitive adhesive (PSA) composite which comprises(i) a flexible backing,(ii) a solvent-free layer of a PSA which is secured to the backing, and which comprises a thermoplastic elastomer (TPE) or is at least partially covered by a layer comprising a TPE, said TPE compris

[ We claim:] [1.] A pressure-sensitive adhesive (PSA) composite which comprises(i) a flexible backing,(ii) a solvent-free layer of a PSA which is secured to the backing, and which comprises a thermoplastic elastomer (TPE) or is at least partially covered by a layer comprising a TPE, said TPE comprising polymeric molecules which comprise(i) polymeric A blocks which(a) are crystalline and have a melting point T.sub.q, or(b) are amorphous and have a glass transition point T.sub.gh ;(ii) at least one polymeric B block which is linked to at least two A blocks and which(a) is crystalline and has a melting point T.sub.ms which is less than (T.sub.q -10).degree.C. or less than (T.sub.gh -10).degree.C. or(b) is amorphous and has a glass transition point T.sub.gs which is less than (T.sub.q -10).degree.C. or less than (T.sub.gh -10).degree.C.; rein at least one block selected from the A and B blocks comprises a side chain comprising crystallizable moieties which render the block crystalline.