US 12,441,823 B2
Resin composition for optical shaping
Misaki Ito, Niigata (JP); and Kenji Suzuki, Niigata (JP)
Assigned to KURARAY NORITAKE DENTAL INC., Kurashiki (JP)
Appl. No. 17/416,216
Filed by KURARAY NORITAKE DENTAL INC., Kurashiki (JP)
PCT Filed Dec. 9, 2019, PCT No. PCT/JP2019/048149
§ 371(c)(1), (2) Date Jun. 18, 2021,
PCT Pub. No. WO2020/129736, PCT Pub. Date Jun. 25, 2020.
Claims priority of application No. 2018-239380 (JP), filed on Dec. 21, 2018.
Prior Publication US 2022/0041777 A1, Feb. 10, 2022
Int. Cl. C08F 220/56 (2006.01); A61K 6/887 (2020.01); B29C 64/135 (2017.01); B29C 64/314 (2017.01); B33Y 10/00 (2015.01); B33Y 70/00 (2020.01); C08F 2/48 (2006.01); C08F 220/18 (2006.01)
CPC C08F 220/56 (2013.01) [A61K 6/887 (2020.01); B29C 64/135 (2017.08); B29C 64/314 (2017.08); B33Y 10/00 (2014.12); B33Y 70/00 (2014.12); C08F 2/48 (2013.01); C08F 220/18 (2013.01)] 18 Claims
 
1. A resin composition, comprising:
an α,β-unsaturated double bond group-containing compound (A) having a ring structure (a) containing a nitrogen atom;
a (meth)acrylic acid ester compound (B) having a boiling point of 280° C. or more at normal pressure, having a carbocyclic group, and having no nitrogen-containing heterocyclic group;
a urethanized (meth)acrylic compound (D);
a photopolymerization initiator (C);
optionally, a polyfunctional polymerizable monomer (E) having a molecular weight of 500 or less and not comprised in the α,β-unsaturated double bond group-containing compound (A) and the (meth)acrylic acid ester compound (B), and
optionally, an other compound different from the α,β-unsaturated double bond group-containing compound (A), the (meth)acrylic acid ester compound (B), the urethanized (meth)acrylic compound (D) and the optional polyfunctional polymerizable monomer (E) wherein
a weight-average molecular weight Mw of the urethanized (meth)acrylic compound (D) is from 2,000 to 5,000,
a content of the urethanized (meth)acrylic compound (D) is 1 to 98 mass % relative to the total amount of the α, β-unsaturated double bond group-containing compound (A), the (meth)acrylic acid ester compound (B) and the urethanized (meth)acrylic compound (D),
if present, a content of the polyfunctional polymerizable monomer (E) having a molecular weight of 500 or less is 20 mass % or less relative to a total amount of polymerizable compounds comprised in the resin composition, and
if present, a content of the polymerizable compound different from the α,β-unsaturated double bond group-containing compound (A), the (meth)acrylic acid ester compound (B), the urethanized (meth)acrylic compound (D) and the optional polyfunctional polymerizable monomer (E) is less than 10.0 mass %, relative to the total amount of the polymerizable compounds comprised in the resin composition.