Title:
(メタ)アクリル系共重合体樹脂及びそれからなる塗膜
Document Type and Number:
Japanese Patent JP4425788
Kind Code:
B2
Abstract:
A coating resin that is thermoplastic, exhibits good appearance, solvent resistance and adherence and is excellent in abrasion resistance; and a coating liquid or coating film thereof. In particular, a (meth)acrylic copolymer resin (A) produced by radical polymerization of 4 to 50 mass % of (meth)acrylic acid (a-1), 0.5 to 17 mass % of (meth)acrylamide (a-2) and 35 to 95.5 mass % of a compound having reactive unsaturated bond other than the compounds (a-1)(a-2). With respect to the coating film produced therefrom, both the glass transition temperature Tg1 measured by means of a rigid-body pendulum type viscoelasticity measuring instrument and the glass transition temperature Tg2 measured by means of a differential scanning calorimeter (DSC) are 110 DEG C or higher. The coating film is an abrasion resistant film whose abrasion resistance measured in accordance with the Taber abrasion testing method is 80 rotations or greater.
Inventors:
Yugo Hasegawa
Mamoru Murakami
Keiichi Asami
Mamoru Murakami
Keiichi Asami
Application Number:
JP2004524170A
Publication Date:
March 03, 2010
Filing Date:
July 28, 2003
Export Citation:
Assignee:
Mitsui Chemicals, Inc.
International Classes:
C08F220/06; C09D133/00; C09D133/02; C09D133/06
Domestic Patent References:
| JP61268731A | ||||
| JP62132973A | ||||
| JP2003154796A | ||||
| JP63286471A | ||||
| JP10130338A |
Attorney, Agent or Firm:
Patent corporation ssinpat