The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 13, 2014
Filed:
Jun. 24, 2010
Ryouji Oda, Tokyo, JP;
Sadaharu Hashimoto, Tokyo, JP;
Ryouji Oda, Tokyo, JP;
Sadaharu Hashimoto, Tokyo, JP;
Zeon Corporation, Tokyo, JP;
Abstract
The present invention provides a composition for a stretchable film, which achieves a high-level balance between a high elastic modulus and a small permanent elongation, which is excellent in adhesive force when laminated with a non-woven fabric or the like, and also has good formability. The present invention also provides a composition for a stretchable film comprising a block copolymer composition containing a block copolymer A represented by the following general formula (A) and a block copolymer B represented by the following general formula (B), and a polyolefin-based thermoplastic resin:Ar1-D-Ar2  (A)(Ar-D)-X  (B),in these formulas, Ar1and Areach represent an aromatic vinyl polymer block having a weight average molecular weight of 6,000 to 20,000; Ar2represents an aromatic vinyl polymer block having a weight average molecular weight of 40,000 to 400,000; Dand Deach represent a conjugated diene polymer block having a vinyl bond content of 1 mol % to 20 mol %; X represents a single bond or a residue of a coupling agent; and n represents an integer of 2 or greater.