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:
Jun. 25, 2013
Filed:
Mar. 29, 2010
Takeshi Ooishi, Tokyo, JP;
Takurou Sakurai, Tokyo, JP;
Takeshi Ooishi, Tokyo, JP;
Takurou Sakurai, Tokyo, JP;
Zeon Corporation, Tokyo, JP;
Abstract
Provided is a composition for a stretchable film, which achieves a high-level balance between a high elastic modulus and a small permanent set, and can be formed into a stretchable film with satisfactory formability. A composition for a stretchable film comprises 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 tackifier resin:Ar1-D-Ar2  (A)(Ar-D)-X   (B),in the general formulas (A) and (B), 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.