Title:
ADHESIVE COMPOSITION FOR PROTECTIVE FILM AND PROTECTIVE FILM
Document Type and Number:
Japanese Patent JP2020083940
Kind Code:
A
Abstract:
To provide an adhesive composition for a protective film which has good balance between high speed peeling force and low speed peeling force, sufficiently suppresses a zipping phenomenon even when peeling at a higher speed than conventional one and can form an adhesive layer excellent in curved surface adhesiveness and to provide a protective film.SOLUTION: There are provided: an adhesive composition for a protective film which comprises: a (meth)acrylic copolymer (A) containing a constitutional unit derived from a monomer having a hydroxyl group and having a Tg of -40°C or less and a weight average molecular weight of 300000 to 1500000; a (meth)acrylic copolymer (B) containing a constitutional unit derived from a monomer having a hydroxyl group and having a Tg of -10°C or more and 45°C or less and a weight average molecular weight of more than 10000 and 200000 or less; and an isocyanate-based crosslinking agent, in which the content of the (meth)acrylic copolymer (B) is in the range of 5 pts.mass or more and 60 pts.mass or less based on 100 pts.mass of the (meth)acrylic copolymer (A);and an application thereof.SELECTED DRAWING: None
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Inventors:
FUJIKAWA HARUNA
KAMOI AKIRA
KANO HAJIME
TAKEGUCHI MINATO
KAMOI AKIRA
KANO HAJIME
TAKEGUCHI MINATO
Application Number:
JP2018215929A
Publication Date:
June 04, 2020
Filing Date:
November 16, 2018
Export Citation:
Assignee:
NIPPON CARBIDE KOGYO KK
International Classes:
C09J133/06; C09J7/38; C09J11/06; C09J133/14; C09J175/04
Domestic Patent References:
| JP2008280375A | 2008-11-20 | |||
| JP2008248223A | 2008-10-16 | |||
| JP2009221324A | 2009-10-01 | |||
| JP2013189601A | 2013-09-26 |
Attorney, Agent or Firm:
Atsushi Nakajima
Kato Kazunori
Hiroshi Fukuda
Kato Kazunori
Hiroshi Fukuda