ADHESIVE FOR SURFACE PROTECTIVE MATERIAL AND SURFACE PROTECTIVE MATERIAL
PROBLEM TO BE SOLVED: To provide an adhesive for a surface protective material having excellent adhesiveness and extensibility, further being favourably suppressed increase of adhesiveness, and capable of providing the surface protective material hardly leaving adhesive residues when peeling from a...
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Format: | Patent |
Sprache: | eng |
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Zusammenfassung: | PROBLEM TO BE SOLVED: To provide an adhesive for a surface protective material having excellent adhesiveness and extensibility, further being favourably suppressed increase of adhesiveness, and capable of providing the surface protective material hardly leaving adhesive residues when peeling from a protection target.SOLUTION: There is provided an adhesive for a surface protective material containing a block copolymer composition consisting of a block copolymer A represented by the formula (A) and a block copolymer B represented by the formula (B), and a tackifier resin, and having a weight ratio (A/B) of the block copolymer A and the block copolymer B in the block copolymer composition of 10/90 to 90/10. Ar1-D-Ar2(A) (Ar-D)n-X (B), where Ar1, Ar2and Arare each a specific aromatic vinyl polymer block, Dand Dare specific conjugated diene polymer blocks, X is a single bond or a residue of a coupling agent and n is an integer of 2 or more. |
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