IPC분류정보
| 국가/구분 |
United States(US) Patent
등록
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| 국제특허분류(IPC7판) |
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| 출원번호 |
US-0723443
(1996-10-07)
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발명자
/ 주소 |
- Klee Joachim E.,DEX
- Frey Holger,DEX
- Holter Dirk,DEX
- Mulhaupt Rolf,DEX
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| 출원인 / 주소 |
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| 대리인 / 주소 |
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| 인용정보 |
피인용 횟수 :
21 인용 특허 :
108 |
초록
▼
A liquid crystalline compound, a polymeric product formed by polymerization of the liquid crystalline compound, a dental composition including the liquid crystalline compound and method of using the dental composition. Polymerization of the liquid crystalline compound results in an low volume percen
A liquid crystalline compound, a polymeric product formed by polymerization of the liquid crystalline compound, a dental composition including the liquid crystalline compound and method of using the dental composition. Polymerization of the liquid crystalline compound results in an low volume percent shrinkage and a high conversion to polymer. The composition of the invention is useful for dental adhesive, primer, cement, pit and fissure sealant and restorative.
대표청구항
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[ What we claim is:] [1.] A polymeric product formed by polymerization of a liquid crystalline compound within the scope of the general formula: [ STR 27 ] wherein R.sub.1 is a group of the general formula EQU -A'-, -A'-R.sup.0.sub.1 -R'-, -A'-R.sup.0.sub.1 -R'-R.sup.0.sub.2 -R"- a steroidal moiety,
[ What we claim is:] [1.] A polymeric product formed by polymerization of a liquid crystalline compound within the scope of the general formula: [ STR 27 ] wherein R.sub.1 is a group of the general formula EQU -A'-, -A'-R.sup.0.sub.1 -R'-, -A'-R.sup.0.sub.1 -R'-R.sup.0.sub.2 -R"- a steroidal moiety, whereineach A', R' and R" independently is a substituted or unsubstituted aromatic moiety having 6 to 24 carbon atoms, a substituted or unsubstituted heteroaromatic moiety having 6 to 24 carbon atoms or a substituted or unsubstituted cycloalkylene moiety having 5 to 30 carbon atoms, a substituted or unsubstituted alkylene moiety having 2 to 20 carbon atomseach R.sup.0.sub.1 and R.sup.0.sub.2 independently is a covalent bond, OCO, N.dbd.N, CH.dbd.N, C.dbd.C, CO, O(CO)O, O, S, SO.sub.2, OCS, CH.sub.2 --O, CH.sub.2 --S, [ STR 28 ] each L.sub.1 and L.sub.2 independently is hydrogen, alkyl having 1 to 20 carbon atoms, alkylene having 2 to 20 carbon atoms or CNR.sub.3 is a covalent bond, alkylene having 1 to 20 carbon atoms, halogen substituted or unsubstituted alkylene having 2 to 20 carbon atoms, oxyalkylene having 1 to 20 carbon atoms, thioalkylene having 1 to 20 carbon atoms or a carboxyalkylene having 1 to 20 carbon atomsR.sup.4 is hydrogen, a substituted or an unsubstituted alkyl having 1 to 20 carbon atoms, cycloalkyl having 5 to 12 carbon atoms, or aryl having 6 to 20 carbon atoms,M is a mesogenic group comprising two rings and of the general formula EQU -A.sup.2 -Z, -A.sup.2 -R.sup.0.sub.1 -R.sup.2 -Z, -A.sup.2 -R.sup.0.sub.1 -R.sup.2 -R.sup.0.sub.2 -R.sup.3 -Z a steroidal moiety, whereineach A.sup.2 independently is a substituted or unsubstituted aromatic moiety having up to 24 carbon atoms, a substituted or unsubstituted heteroaromatic moiety having up to 24 carbon atomseach R.sup.2 and R.sup.3 independently is a substituted or unsubstituted aromatic moiety having up to 24 carbon atoms, a substituted or unsubstituted heteroaromatic moiety having up to 24 carbon atoms or a substituted or unsubstituted cycloalkylene moiety having up to 30 carbon atomseach R.sup.0.sub.1 and R.sup.0.sub.2 independently is a covalent bond, OCO, N.dbd.N, CH.dbd.N, C.dbd.C, CO, O(CO)O, O, S, SO.sub.2, OCS, CH.sub.2 --O, CH.sub.2 --S, [ STR 29 ] each L.sub.1 and L.sub.2 independently is hydrogen, alkyl having 1 to 20 carbon atoms, alkylene having 2 to 20 carbon atoms or CNZ is a hydrogen, CN, --OR, COOR, NO.sub.2, alkyl having 1 to 20 carbon atoms, halogen substituted or unsubstituted alkylene or alkenyl having 2 to 20 carbon atoms, a halogen substituted or unsubstituted oxyalkylene or oxyalkenyl having up to 20 carbon atoms, a halogen substituted or unsubstituted thioalkylene or thioalkenyl having up to 20 carbon atoms, a halogen substituted or unsubstituted carboxyalkylene or alkanoylenoxy having up to 20 carbon atoms,X is a covalent bond, CO, NHCO, OCOn is an integer from 1 to 10, said liquid crystalline compound being in a mesomorphic state, said product comprising less than one percent by weight of said compound.
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