SURFACE PROTECTION FILM

PROBLEM TO BE SOLVED: To obtain a surface protection film which exhibits a good adhesion in the early stage after being stuck and can be easily peeled off by forming, on a substrate, a pressure-sensitive adhesive layer containing a hydrogenated block copolymer and a hydrogenated diene copolymer in a...

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Bibliographische Detailangaben
1. Verfasser:	AGARI HIROSHI
Format:	Patent
Sprache:	eng
Schlagworte:	ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE ADHESIVES CHEMICAL PAINT OR INK REMOVERS CHEMISTRY COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS CORRECTING FLUIDS DYES FILLING PASTES INKS LAYERED PRODUCTS LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL PAINTS PASTES OR SOLIDS FOR COLOURING OR PRINTING PERFORMING OPERATIONS POLISHES TRANSPORTING USE OF MATERIALS AS ADHESIVES USE OF MATERIALS THEREFOR WOODSTAINS
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To obtain a surface protection film which exhibits a good adhesion in the early stage after being stuck and can be easily peeled off by forming, on a substrate, a pressure-sensitive adhesive layer containing a hydrogenated block copolymer and a hydrogenated diene copolymer in a specified ratio. SOLUTION: This film is prepared by forming a pressure-sensitive adhesive layer comprising 5-70 wt.% hydrogenated block copolymer and 95-30 wt.% hydrogenated diene copolymer on a substrate made of a thermoplastic resin, The hydrogenated block copolymer is represented by the formula: A-B-C or (A-B-C)nX; and the hydrogenated diene copolymer, by the formula: D-E-F. In the formulas, A is a polymer block containing at least 90 wt.% styrene compound units: B is a hydrogenated polybutadiene block containing 30-70 wt.% 1, 2-vinylbonded units; C is a hydrogenated polybutadiene block containing lower than 30 wt.% 1,2-vinyl-bonded units; n is 2-4; D is a styrene compound polymer block; E is a hydrogenated conjugated diene polymer block or the like; and F is a hydrogenated tapered copolymer block of a styrene compound and a conjugated diene.