	US 12,275,814 B2
	(Meth)acrylate, monomer composition, molded body, composition for dental material, and dental material
Naoyuki Kakinuma, Ichihara (JP)
Assigned to MITSUI CHEMICALS, INC., Tokyo (JP)
Appl. No. 17/292,866
Filed by MITSUI CHEMICALS, INC., Tokyo (JP)
PCT Filed Dec. 11, 2019, PCT No. PCT/JP2019/048500 § 371(c)(1), (2) Date May 11, 2021, PCT Pub. No. WO2020/122124, PCT Pub. Date Jun. 18, 2020.
Claims priority of application No. 2018-231945 (JP), filed on Dec. 11, 2018.
Prior Publication US 2021/0403632 A1, Dec. 30, 2021
Int. Cl. A61K 6/887 (2020.01); C07C 69/54 (2006.01); C08F 290/06 (2006.01); C08G 18/24 (2006.01); C08G 18/67 (2006.01); C08G 18/73 (2006.01); C08G 18/75 (2006.01); C08G 18/76 (2006.01)

CPC C08G 18/672 (2013.01) [A61K 6/887 (2020.01); C07C 69/54 (2013.01); C08F 290/067 (2013.01); C08G 18/246 (2013.01); C08G 18/73 (2013.01); C08G 18/755 (2013.01); C08G 18/757 (2013.01); C08G 18/758 (2013.01); C08G 18/7642 (2013.01); C08G 18/765 (2013.01)]

12 Claims

1. A (meth)acrylate comprising a compound (X) having a structure formed by a reaction of an epoxy compound (A) containing an epoxy group and a tertiary carbon atom or a quaternary carbon atom, a (meth) acrylic acid (B), and an iso(thio)cyanate compound (C) having two or more iso(thio)cyanate groups,

wherein the epoxy compound (A) comprises a tert-butyl group, a tert-pentyl group, a tert-hexyl group, a tert-heptyl group, a tert-octyl group, a tert-nonyl group, a tert-decyl group or a cumyl group, or

wherein the (meth)acrylate is represented by the following general formula (1);

wherein, in general formula (1), R₁represents a residue of the epoxy compound (A) from which the glycidyl ether group has been removed; R₂represents a residue of the iso(thio)cyanate compound (C) from which all iso(thio)cyanate groups have been removed; R₃represents a hydrogen atom or a methyl group; R₄represents an oxygen atom or a sulfur atom; n is an integer of 2 or more; and plural instances of R₁, R₃and R₄may be the same or different, respectively.