申请人:DENTSPLY SIRONA inc.
公开号:US11166883B2
公开(公告)日:2021-11-09
Dental composition comprising
(a) a homogeneous phase comprising monomer combinations (i) and (ii), (i) and (iii), (ii) and (iii), or (i), (ii) and (iii), or comprising monomer (iii), wherein
(i) represents one or more compounds having one or more radically polymerizable carbon-carbon double bonds;
(ii) represents one or more compounds having one or more cationically polymerizable groups; and
(iii) represents one or more compounds having a combination of one or more radically polymerizable carbon-carbon double bonds and one or more cationically polymerizable groups;
(b) an initiator system comprising
(iv) one or more radical polymerization initiator of the following formula (I):
wherein
M is Ge or Si;
R1, R2 and R3 may be the same or different, independently represent an organic group, and
R4 represents a hydrogen atom, an organic or organometallic group; provided that when R4 is a hydrogen atom, the initiator system further comprises a sensitizer compound having a light absorption maximum in the range from 300 to 600 nm;
(v) a cationic polymerization initiator, which is a compound selected from the following formula (II), (III) and (IV):
wherein
R5 and R6, which may be the same or different, independently represent an aryl group which may have a substituent; and
Y− represents an anion;
wherein
R7, R8 and R9 which may be the same or different, independently represent an aryl group which may have a substituent; and
Y− represents an anion;
R10, R11, R12, and R13 which may be the same or different, independently represent an alkyl or aryl group which may have a substituent; and
Y− represents an anion.
牙科组合物,包括
(a) 均相,包括单体组合(i)和(ii)、(i)和(iii)、(ii)和(iii)或(i)、(ii)和(iii),或包括单体(iii),其中
(i) 代表具有一个或多个可辐射聚合碳碳双键的一种或多种化合物;
(ii) 代表一种或多种具有一种或多种阳离子可聚合基团的化合物;和
(iii) 代表具有一个或多个可辐射聚合的碳碳双键和一个或多个可阳离子聚合基团组合的一个或多个化合物;
(b) 一种引发剂体系,包括
(iv) 下式(I)的一种或多种自由基聚合引发剂:
在其中
M 是 Ge 或 Si;
R1、R2 和 R3 可以相同或不同,各自代表一个有机基团,以及
R4 代表氢原子、有机基团或有机金属基团;条件是当 R4 为氢原子时,引发剂体系进一步包括敏化剂化合物,其光吸收率最大值在 300 至 600 纳米范围内;
(v) 阳离子聚合引发剂,它是选自下式 (II)、(III) 和 (IV) 的化合物:
在其中
R5 和 R6(可以相同或不同)独立地代表一个芳基,该芳基可以有一个取代基;以及
Y- 代表阴离子;
在其中
R7、R8 和 R9 可以相同或不同,各自代表一个芳基,该芳基可以有一个取代基;以及
Y- 代表阴离子;
R10、R11、R12 和 R13 可以相同或不同,各自代表烷基或芳基,可带有取代基;以及
Y- 代表阴离子。