摘要:
A process for producing a water-soluble, hydrolysis-stable, polymerizable polymer, comprising a) a step of copolymerizing a mixture comprising (i) a first copolymerizable monomer comprising at least one optionally protected carboxylic acid group and a first polymerizable organic moiety, and (ii) a second copolymerizable monomer comprising one or more optionally protected primary and/or secondary amino groups and a second polymerizable organic moiety, for obtaining an amino group containing copolymer; b) a step of coupling to the amino group containing copolymer a compound having a polymerizable moiety and a functional group reactive with an amino group of repeating units derived from the second copolymerizable monomer in the amino group containing copolymer obtained in the first step wherein the optionally protected amino group is deprotected, so that polymerizable pendant groups are linked to the backbone by hydrolysis-stable linking groups, and, optionally, a step of deprotecting the protected carboxylic acid group after step (a) or step (b), for obtaining a polymerizable polymer.
摘要:
A dental root canal sealing composition curable in the absence of a polymerisation initiator and having a viscosity at 23°C of less than 100 Pas, which comprises (i) an amino terminated prepolymer obtainable by reacting (a) one mole of a compound of the following formula (I) wherein X represents a nitrogen or an oxygen atom; Z represents an n-valent saturated aliphatic or cycloaliphatic C2-16 hydrocarbon group which may contain 1 to 6 oxygen atoms, and which may be substituted by one or more C1-4 alkyl groups; and n represents an integer of from 2 to 6; and (b) at least n moles of one or more compounds either of the following formula (II) wherein R represents a C1-6 alkyl or a C3-,4 cycloalkyl group, which may be substituted by one or more (up to six) members of the group selected from a C1-4 alkyl group, C1-4 alkoxy group, a phenyl group, and a hydroxy group, or of formula (11) in combination with one or more di- or polyamine compound; (ii) a di-or polyfunctional acrylate compound or a di- or polyfunctional maleimide compound which is capable of undergoing polyaddition with the aminotherminated prepolymer (i); (iii) 40 to 85 wt.-% of a filler for providing a minimum radioopacity of at least 3mm/mm AI; said composition being in the form of a two-component composition wherein a first component contains the amino terminated prepolymer (i) and optionally filler (iii) and a second component (ii) capable of undergoing polyaddition with the aminoterminated prepolymer (i) and optionally filler (iii).
摘要:
Kit-of-parts containing (i) a dental device for use in the obturation of a root canal which comprises a tapered obturating point portion integrally connected at the distal end of a functional portion, whereby the functional portion comprises (a) a neck portion adjacent to the obturating point portion, and (b) a handle portion, and (ii) a dental sealant composition, wherein the dental device is made of a material obtainable by curing a composition containing one or more curable components contained in the dental sealant.
摘要:
A dental root canal sealing composition curable in the absence of a polymerisation initiator and having a viscosity at 23°C of less than 100 Pas, which comprises (i) an amino terminated prepolymer obtainable by reacting (a) one mole of a compound of the following formula (I) wherein X represents a nitrogen or an oxygen atom; Z represents an n-valent saturated aliphatic or cycloaliphatic C2-16 hydrocarbon group which may contain 1 to 6 oxygen atoms, and which may be substituted by one or more C1-4 alkyl groups; and n represents an integer of from 2 to 6; and (b) at least n moles of one or more compounds either of the following formula (II) wherein R represents a C1-6 alkyl or a C3-,4 cycloalkyl group, which may be substituted by one or more (up to six) members of the group selected from a C1-4 alkyl group, C1-4 alkoxy group, a phenyl group, and a hydroxy group, or of formula (11) in combination with one or more di- or polyamine compound; (ii) a di-or polyfunctional acrylate compound or a di- or polyfunctional maleimide compound which is capable of undergoing polyaddition with the aminotherminated prepolymer (i); (iii) 40 to 85 wt.-% of a filler for providing a minimum radioopacity of at least 3mm/mm AI; said composition being in the form of a two-component composition wherein a first component contains the amino terminated prepolymer (i) and optionally filler (iii) and a second component (ii) capable of undergoing polyaddition with the aminoterminated prepolymer (i) and optionally filler (iii).
摘要:
A dental cement composition comprising (i) a particulate reactive inorganic filler capable of leaching metal ions in the presence of an acid, and (ii) composite particles with grafted polyacidic polymer chains, which are obtainable by a process comprising the following steps: (a) polymerizing one or more free radically polymerizable monomers containing optionally protected acidic groups in the presence of (a1) an initiatior system comprising initiator particles displaying a moiety comprising a radically transferable atom or group as a polymerization initiation site; and (a2) a catalyst facilitating controlled/living polymerisation, and (a3) optionally further polymerizable monomers, for forming a composite particle with grafted optionally protected polyacidic polymer chains; and (b) optionally deprotecting protected acidic groups, for forming composite particles with grafted polyacidic polymer chains.
摘要:
A dental cement composition comprising (i) a particulate reactive inorganic filler capable of leaching metal ions in the presence of an acid, and (ii) composite particles with grafted polyacidic polymer chains, which are obtainable by a process comprising the following steps: (a) polymerizing one or more free radically polymerizable monomers containing optionally protected acidic groups in the presence of (a1) an initiatior system comprising initiator particles displaying a moiety comprising a radically transferable atom or group as a polymerization initiation site; and (a2) a catalyst facilitating controlled/living polymerisation, and (a3) optionally further polymerizable monomers, for forming a composite particle with grafted optionally protected polyacidic polymer chains; and (b) optionally deprotecting protected acidic groups, for forming composite particles with grafted polyacidic polymer chains.
摘要:
A dental root canal sealing composition curable in the absence of a polymerisation initiator, which comprises: (i) an amino terminated prepolymer having a viscosity at 230C of less than 100 Pas, which is obtainable by reacting (a) one mole of a compound of the formula (I) wherein X represents a nitrogen or an oxygen atom; Z represents an n-valent saturated aliphatic C2-16 hydrocarbon group or a divalent saturated cycloaliphatic C3-6 hydrocarbon group, which groups may contain 1 to 6 oxygen atoms, and which may be substituted by 1 to 6 C1-4 alkyl groups; and n represents an integer of from 2 to 6; (b) at least n moles of one or more compounds either of the following formula (II) wherein A represents a divalent saturated aliphatic C2-16 hydrocarbon group or a divalent saturated cycloaliphatic C3-6 hydrocarbon group, which groups may contain 1 to 6 oxygen atoms, and which may be substituted by 1 to 6 C1-4 alkyl groups; Ra and Rb are the same or different and represent a hydrogen atom, a C1-6 alkyl or a C3-14 cycloalkyl group, which may be substituted by one or more members of the group selected from a C1-4 alkyl group, C1-4 alkoxy group, a phenyl group, and a hydroxy group; or of formula (II) in combination with one or more compounds of a formula RNH2, wherein R represents C1-6 alkyl or a C3-14 cycloalkyl group, which may be substituted by one or more members of the group selected from a C1-4 alkyl group, C1-4 alkoxy group, a phenyl group, and a hydroxy group, and/or in combination with a further di- or polyamine compound; (ii) a di- or polyfunctional acrylate compound or a di- or polyfunctional maleimide compound which is capable of undergoing polyaddition with the aminoterminated prepolymer (i); (iii) 40 to 85 wt.-% of a filler for providing a minimum radioopacity of at least 3mm/mm Al; said compositon being in the form of a two-component composition wherein a first component contains the amino terminated prepolymer (i) and optionally filler (iii) and a second component contains the compound (ii) capable of undergoing polyaddition with the aminoterminated prepolymer (i) and optionally filler (iii).
摘要:
Dental composition comprising a water-soluble polymerizable compound of the following formula (1): €ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ AX n €ƒ€ƒ€ƒ€ƒ€ƒ(1) wherein A is a straight chain or branched linker group containing least n nitrogen atoms, whereby the linker group has polyoxyalkylene and/or polyalkylene imine repeating units and optionally one or more acidic groups, X are moieties containing a polymerizable double bond and forming an amide bond with a nitrogen atom of A, wherein each X may be the same or different and are represented by the following formula (2): wherein R 1 and R 2 are independent from each other and represent a hydrogen atom, a C 1-6 alkyl group or a group -(CH 2 ) m -COOM, wherein M represents a hydrogen atom or a metal atom, m is an integer of from 0 to 6, L is a bond or a C 1-6 alkylene group; and n is an integer of at least 1; (ii) an initiator system; optionally a polyacidic polymer; optionally water and/or a water soluble solvent; and optionally a particulate filler.