Title:
ACRYLIC BLOCK COPOLYMER AND PRESSURE-SENSITIVE ADHESIVE COMPOSITION
Document Type and Number:
WIPO Patent Application WO/2016/121607
Kind Code:
A1
Abstract:
[Problem] To provide: an acrylic block copolymer with which it is possible to present exceptional adhesive strength, cohesive strength, holding power, tack, and-hot melt coating properties when used in a pressure-sensitive adhesive composition; and a pressure-sensitive adhesive composition containing this block copolymer. [Solution] An acrylic block copolymer (I) having at least two polymer blocks (A) comprising methacrylic acid ester units and at least one polymer block (B) comprising an acrylic acid ester unit, the acrylic block copolymer (I) having an (A)-(B)-(A) block structure, a weight-average molecular weight (Mw) of 30,000-100,000, and a melt viscosity at 100°C of 100,000 mPa・s or less as measured by a type-B viscometer.
Inventors:
NAKADA KANAYO (JP)
MORISHITA YOSHIHIRO (JP)
MORISHITA YOSHIHIRO (JP)
Application Number:
PCT/JP2016/051641
Publication Date:
August 04, 2016
Filing Date:
January 21, 2016
Export Citation:
Assignee:
KURARAY CO (JP)
International Classes:
C08F297/02; C08L53/00; C09J11/06; C09J133/08; C09J133/10; C09J153/00
Domestic Patent References:
| WO2002026847A1 | 2002-04-04 |
Foreign References:
| JP2015212316A | 2015-11-26 | |||
| JP2012207155A | 2012-10-25 | |||
| JP2002533556A | 2002-10-08 | |||
| JP2013224430A | 2013-10-31 | |||
| JP2003277574A | 2003-10-02 |
Other References:
See also references of EP 3252090A4
Attorney, Agent or Firm:
SSINPAT PATENT FIRM (JP)
Patent business corporation SSINPAT (JP)
Patent business corporation SSINPAT (JP)
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