C - Chemistry – Metallurgy – 07 – F
Patent
C - Chemistry, Metallurgy
07
F
C07F 7/08 (2006.01) A61K 6/093 (2006.01) C07F 7/18 (2006.01) C07F 9/6553 (2006.01) C08G 77/28 (2006.01) C08G 77/30 (2006.01)
Patent
CA 2317199
Methylene dithiepane silanes according to Formula I (see formula I) in which R1 is a saturated or unsaturated aliphatic or alicyclic hydrocarbon radical with 1 to 10 carbon atoms, which can be interrupted by one or more oxygen and/or sulphur atoms and can contain one or more ester, carbonyl, amide and/or urethane groups, or is an aromatic or heteroaromatic hydrocarbon radical with 6 to 18 carbon atoms, the hydrocarbon radicals being able to be substituted or unsubstituted; R2 has one of the meanings given for R1 or is absent; R3 has one of the meanings given for R1 or is absent; R4 is equal to -(CHR6)n-, -Y-CO-NH-(CHR6)n-, -Y-CO-NH-R5-, -(CHR6)n-S-R5-, -S-R5-, -CO-O-R5- or is absent, with n being equal to 1 to 4, R6 is hydrogen, C1 to C10 alkyl or C6 to C10 aryl, R5 has one of the meanings given for R1 and Y stands for an 0 or S atom or is absent; with R5 and R6 being able to be substituted or unsubstituted; X is a hydrolyzable group; a, b, c and x each independently of each other being 1, 2 or 3; and the sum of a + x - 2 to 4. The silanes are particularly suitable for the preparation of dental materials.
Moszner Norbert
Rheinberger Volker
Stein Sabine
Volkel Thomas
Ivoclar Ag
Ridout & Maybee Llp
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