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US 11,110,039 B2Granted
Macromonomer based light-curable dental impression material
AssigneeDENTSPLY SIRONA Inc.
InventorsXiaoming Jin, Christos Angeletakis, Yi Liu, Joachim E. Klee, Christoph Weber, Xin Huo
Life of this patent
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Abstract
A light-curable dental impression material comprising (a) a polymerizable polysiloxane resin composition comprising compounds of formula (I) E-(L1-Z)n-L2-E (I) (b) a particulate filler; and (c) a photoinitiator.
Claims19
A light-curable dental impression material comprising:
- (a) a polymerizable polysiloxane resin composition comprising compounds of the following formula (I):
- E-(L1-Z)n-L2-E (I)
- wherein
- the E which may be the same or different, independently represent a monovalent group selected from a group containing a polymerizable carbon-carbon double bond, a group containing a polysiloxane moiety, a C2-20 alkoxy group, a C2-20 thioalkyl group, and a RNH group, wherein R is a C2-20 alkyl group;
- L1 which may be the same or different when more than one L1 is present, represents a divalent group of the following formula (II):
- wherein
- L3 which may be the same or different when more than one L3 is present, independently represents a divalent linker group which may be substituted with up to four substituents of the formula (III):
- -L1-E (III)
- wherein L1 and E are as defined above;
- L4 which may be the same or different when more than one L4 is present, independently represents a divalent linker group which may be substituted with up to four substituents of the formula (III), wherein L1 and E are as defined above;
- X1, X2, Y1, and Y2,
- which may be the same or different, and when more than one X1, X2, Y1, or Y2, is present, the X1, X2, Y1, and Y2 may be the same or different, independently represent an oxygen atom, a sulfur atom and a group NR′, wherein R′ is a hydrogen atom or a C1-4 alkyl group;
- m represents 0 or an integer of from 1 to 40;
- Z represents a divalent linker group which may additionally be substituted with up to four substituents selected from polysiloxane groups, groups of the formula (III) and combination thereof, wherein L1 and E are as defined above;
- L2 represents a single bond or a divalent group of the formula (II), wherein L3, L4, X1, X2, Y1, Y2 and m are independently as defined for L1;
- n represents 0 or an integer of from 1 to 4;
- provided that
- a compound of formula (I) contains at least one monovalent group E having a polymerizable carbon-carbon double bond,
- a compound of formula (I) contains at least one polysiloxane group and
- provided that
- when n is 0, then L2 is a divalent group of the formula (II);
- (b) a particulate filler;
- and
- (c) a photoinitiator.
21 more elements
A process for the preparation of a dental impression, said process comprising the step of mixing:
- (a) a polymerizable polysiloxane resin composition comprising compounds of the following formula (I):
- E-(L1-Z)n-L2-E (I)
- wherein
- the E which may be the same or different, independently represent a monovalent group selected from a group containing a polymerizable carbon-carbon double bond, a group containing a polysiloxane moiety, a C2-20 alkoxy group, a C2-20 thioalkyl group, and a RNH group, wherein R is a C2-20 alkyl group;
- L1 which may be the same or different when more than one L1 is present, represents a divalent group of the following formula (II):
- wherein
- L3 which may be the same or different when more than one L3 is present, independently represents a divalent linker group which may be substituted with up to four substituents of the formula (III):
- -L1-E (III)
- wherein L1 and E are as defined above;
- L4 which may be the same or different when more than one L4 is present, independently represents a divalent linker group which may be substituted with up to four substituents of the formula (III), wherein L1 and E are as defined above;
- X1, X2, Y1, and Y2,
- which may be the same or different, and when more than one X1, X2, Y1, or Y2, is present, the X1, X2, Y1, and Y2 may be the same or different, independently represent an oxygen atom, a sulfur atom and a group NR′, wherein R′ is a hydrogen atom or a C1-4 alkyl group;
- m represents 0 or an integer of from 1 to 40;
- Z represents a divalent linker group which may additionally be substituted with up to four substituents selected from polysiloxane groups, groups of the formula (III) and combination thereof, wherein L1 and E are as defined above;
- L2 represents a single bond or a divalent group of the formula (II), wherein L3, L4, X1, X2, Y1, Y2 and m are independently as defined for L1;
- n represents 0 or an integer of from 1 to 4;
- provided that
- a compound of formula (I) contains at least one monovalent group E having a polymerizable carbon-carbon double bond,
- a compound of formula (I) contains at least one polysiloxane group and provided that
- when n is 0, then L2 is a divalent group of the formula (II);
- (b) a particulate filler;
- and
- (c) a photoinitiator.
20 more elements
Dependencies are inferred from the claim text.