Title:
保護フィルム用粘着剤組成物及び被着体の表面保護フィルム
Document Type and Number:
Japanese Patent JP6829097
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide an adhesive composition capable of forming an adhesive layer which has high adhesive force under a high-temperature environment and hardly deteriorates in releasability at a normal temperature, and to provide an adhesive film having an adhesive layer.SOLUTION: The adhesive composition contains a (meth)acrylic polymer (A) having a hydroxyl group, a (meth)acrylic oligomer (B) having a weight-average molecular weight of 2,000 or more and 10,000 or less, and an isocyanate compound. The (meth)acrylic oligomer (B) is contained in an amount of 70 pts.mass or more and 200 pts.mass or less based on 100 pts.mass of the (meth)acrylic polymer (A). It is preferable that the (meth)acrylic polymer (A) has a hydroxyl value of 30 mg KOH/g or more. It is also preferable that the (meth)acrylic polymer (A) has a glass transition temperature (Tg) of -60°C or lower.SELECTED DRAWING: None
Inventors:
Hajime Kano
Application Number:
JP2017021493A
Publication Date:
February 10, 2021
Filing Date:
February 08, 2017
Export Citation:
Assignee:
Nippon Carbide Industry Co., Ltd.
International Classes:
C09J133/14; B32B27/00; B32B27/30; C09J7/30; C09J11/08; C09J175/04
Domestic Patent References:
| JP2012236974A | ||||
| JP2016190902A | ||||
| JP2015212362A |
Attorney, Agent or Firm:
Showa International Patent Office