US 12,325,811 B2
Radical-polymerizable adhesive composition for laminating and bonding steel plates, adhesive laminate, motor, and method for manufacturing adhesive laminate
Satoshi Kaneko, Tokyo (JP)
Assigned to THREEBOND CO., LTD., Tokyo (JP)
Appl. No. 16/769,864
Filed by THREEBOND CO., LTD., Tokyo (JP)
PCT Filed Nov. 9, 2018, PCT No. PCT/JP2018/041703
§ 371(c)(1), (2) Date Jun. 4, 2020,
PCT Pub. No. WO2019/123885, PCT Pub. Date Jun. 27, 2019.
Claims priority of application No. 2017-241756 (JP), filed on Dec. 18, 2017.
Prior Publication US 2021/0171813 A1, Jun. 10, 2021
Int. Cl. C09J 175/14 (2006.01); B32B 7/12 (2006.01); B32B 15/04 (2006.01); B32B 15/08 (2006.01); B32B 15/082 (2006.01); B32B 15/18 (2006.01); B32B 37/12 (2006.01); C08F 220/20 (2006.01); C08F 290/06 (2006.01); C09J 11/06 (2006.01); C09J 163/10 (2006.01)
CPC C09J 175/14 (2013.01) [B32B 7/12 (2013.01); B32B 15/043 (2013.01); B32B 15/08 (2013.01); B32B 15/082 (2013.01); B32B 15/18 (2013.01); B32B 37/12 (2013.01); C08F 220/20 (2013.01); C08F 290/064 (2013.01); C08F 290/067 (2013.01); C09J 11/06 (2013.01); C09J 163/10 (2013.01); B32B 2311/30 (2013.01); C09J 2400/20 (2013.01); C09J 2463/00 (2013.01); C09J 2475/00 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A radical-polymerizable adhesive composition for laminating and bonding steel plates, comprising:
component (A): a radical-polymerizable compound consisting of an epoxy (meth) acrylate, 2-hydroxyethyl methacrylate, and dimethylol tricyclodecane di(meth)acrylate, wherein a content of the dimethylol tricyclodecane di(meth)acrylate is in a range of more than 0 to 10 parts by mass, a content of the 2-hydroxyethyl methacrylate is in a range of 48 to 58 parts by mass, and a content of the epoxy (meth)acrylate is 42 parts by mass, with respect to a total amount of 100 parts by mass of the epoxy (meth)acrylate, the 2-hydroxyethyl methacrylate, and the dimethylol tricyclodecane di(meth)acrylate;
component (B): a radical-polymerization initiator;
component (C): 2-hydroxyethyl (meth) acrylate acid phosphate, wherein a content of the component (C) is in a range of 0.1 to 50 parts by mass with respect to 100 parts by mass of the component (A); and
component (D): an anaerobic catalyst, wherein the anaerobic catalyst consists of at least one compound selected from the group consisting of saccharin, an amine compound, an azole compound, a mercaptan compound, and a hydrazine compound, and the mercaptan compound consists of at least one compound selected from the group consisting of n-dodecyl mercaptan, ethyl mercaptan, and butyl mercaptan,
wherein the radical-polymerizable adhesive composition for laminating and bonding steel plates has a viscosity of 0.5 Pa·s or more and 15 Pa·s or less in a viscosity measurement, and the viscosity measurement is carried out as follows:
0.5 mL of the radical-polymerizable adhesive composition for laminating and bonding steel plates is sampled and discharged into a measuring cup; and
a viscosity is measured with an elastohydrodynamic (EHD) viscometer in an environment of 25° C. under a condition of a shear rate of 76.6 [1/s].