US 12,133,778 B2
Curable composition for denture base
Ayumu Gyakushi, Tokyo (JP); and Tatsuya Yamazaki, Tokyo (JP)
Assigned to TOKUYAMA DENTAL CORPORATION, Tokyo (JP)
Appl. No. 17/422,504
Filed by TOKUYAMA DENTAL CORPORATION, Tokyo (JP)
PCT Filed Dec. 24, 2019, PCT No. PCT/JP2019/050723
§ 371(c)(1), (2) Date Jul. 13, 2021,
PCT Pub. No. WO2020/149121, PCT Pub. Date Jul. 23, 2020.
Claims priority of application No. 2019-004801 (JP), filed on Jan. 16, 2019.
Prior Publication US 2022/0087795 A1, Mar. 24, 2022
Int. Cl. A61C 13/01 (2006.01); A61C 8/00 (2006.01); C08L 33/04 (2006.01)
CPC A61C 13/01 (2013.01) [A61C 8/0016 (2013.01); C08L 33/04 (2013.01)] 7 Claims
 
1. A denture base curable composition in a paste state, comprising:
(A) a (meth)acrylic monomer,
(B) a monomer-absorbing porous organic crosslinked polymer capable of absorbing the (meth)acrylic monomer (A), and
(C) a polymerization initiator selected from a photo-polymerization initiator and a thermal polymerization initiator,
wherein a content of the monomer-absorbing porous organic crosslinked polymer (B) is 20 to 80 parts by mass per 100 parts by mass of the (meth)acrylic monomer (A), and
wherein an absorption amount RAb representing an amount of the (meth)acrylic monomer (A) absorbed per unit amount of the monomer-absorbing porous organic crosslinked polymer (B) is 1.5 or more, with RAb being defined by the following equation:
RAb={(g−A)/(g−B)},
wherein g-A (unit: g) represents an amount of the (meth)acrylic monomer (A) absorbed by the monomer-absorbing porous organic crosslinked polymer (B) in an amount of g-B (unit: g), and RAb being measured according to JIS K5101-13-1:2004, and
wherein a product obtained by multiplying the content (unit: g) of the monomer-absorbing porous organic crosslinked polymer (B) per unit amount (unit: g) of the (meth)acrylic monomer (A) by the absorption amount RAb is 0.65 to 1.65.