US 12,268,763 B2
Curable dental two-pack composition
Matthias Worm, Singen (DE); Joachim E. Klee, Radolfzell (DE); Helmut Ritter, Bensheim (DE); Özgür Capar, Bensheim (DE); Laura Hartmann, Bensheim (DE); and Moniralsadat Tabatabai, Bensheim (DE)
Assigned to Dentsply Sirona Inc., York, PA (US)
Appl. No. 17/291,337
Filed by DENTSPLY SIRONA INC., York, PA (US)
PCT Filed Nov. 8, 2019, PCT No. PCT/EP2019/080733
§ 371(c)(1), (2) Date May 5, 2021,
PCT Pub. No. WO2020/094859, PCT Pub. Date May 14, 2020.
Claims priority of application No. 18205107 (EP), filed on Nov. 8, 2018.
Prior Publication US 2022/0000723 A1, Jan. 6, 2022
Int. Cl. A61K 6/891 (2020.01); A61K 6/54 (2020.01); A61K 6/77 (2020.01); A61K 6/831 (2020.01)
CPC A61K 6/891 (2020.01) [A61K 6/54 (2020.01); A61K 6/77 (2020.01); A61K 6/831 (2020.01)] 15 Claims
OG exemplary drawing
 
1. A curable dental two-pack composition comprising:
(a) a first paste comprising (a-1) one or more crosslinkers comprising a hyberbranched polyethene imine, a 1,2,3,4,5,6-hexanehexamine, a 1,2,3,4,5-pentanepentamine, or a mixture thereof; and
(b) a second paste comprising (b-1) one or more compounds polymerizable with a crosslinker of the first paste in a step-growth polymerization reaction, which compounds have at least two 1,3-dioxolan-2-one groups selected from the following formula (A) and (B) attached to or connected by one or more organic groups:

OG Complex Work Unit Chemistry
wherein R1, R2 and R3, which are independent from each other, represent a hydrogen atom or a C1-6 alkyl group, wherein at least one of R1, R2 and R3 is a C1-6 alkyl group.