摘要:
Die vorliegende Erfindung betrifft kondensationsvernetzende Dentalmaterialien, insbesondere kondensationsvernetzende Zweikomponenten-Dentalabformmaterialien, auf Basis von alkoxysilylfunktionellen Polyethern enthaltend wenigstens einen alkoxysilylfunktionellen Polyether sowie wenigstens einen Katalysator, wobei der wenigstens eine Katalysator ein Salz ist, welches gebildet ist aus einer schwachen organischen Base mit einem in Wasser gemessenen pK BH+ -Wert zwischen -1 und 7 und wenigstens einer starken Säure mit einem in Wasser gemessenen pKs-Wert kleiner 2, welche vorzugsweise eine Struktur aufweist, welche nach Deprotonierung der Säure eine Mesomeriestabilisierung der negativen Ladung ermöglicht.
摘要:
Über Hydrosilylierungs-Reaktion additionsvernetzende Zweikomponenten-Dentalmaterial mit starren und/oder voluminösen Gruppen sowie mit hoher Biegefestigkeit Die vorliegende Erfindung betrifft ein über Hydrosilylierung additionsvernetzendes Zweikomponenten-Dentalmaterial enthaltend eine oder mehrere Verbindungen mit Vinylgruppen im Molekül, wenigstens eine Organohydrogensiliziumverbindung sowie wenigstens einen Katalysator, wobei die wenigstens eine Verbindung a) und/oder die wenigstens eine Verbindung b) als erste Struktureinheit wenigstens eine voluminöse und/oder starre Gruppe, insbesondere eine aromatische Mono-, Bis-, Oligo- und Polycyclusgruppe, sowie als zweite Struktureinheit wenigstens zwei alkenylfunktionelle und/oder wenigstens zwei, bevorzugt wenigstens drei wasserstofffunktionelle Silyleinheiten umfasst, wobei die zweite Struktureinheit direkt, über ein Sauerstoffatom, über eine Spacergruppe, oder über eine Spacergruppe, welche über ein Sauerstoffatom an die erste Struktureinheit gebunden ist, an die erste Struktureinheit gebunden ist.
摘要:
The invention relates to a device for applying a pasty two-component mixture. Said device is fitted with a reservoir (112) with two chambers (114), each of which contains one pasty component of the mixture, wherein the reservoir (112) has an outlet (120) for each chamber (114), in addition to a mixing unit (132) having a cylindrical mixing housing (134) with a mixing element (138) disposed therein. The mixing housing (134) includes a coupling end (130) that may be coupled to the reservoir (112) having two inlets (142) and two channels (144) leading to the mixing element (136) for the pasty components of the mixture and an outlet (140) on the opposite end thereof for the mixture. A retainer sleeve (122) rotationally mounted in the reservoir is also provided for the coupling end (130) of the mixing housing (134). Said retainer sleeve (122) surrounds both outlets (120) and has a recess (126) whose shape is substantially identical, at least in certain areas, to the shape of the cross section of the coupling end (130) of the mixing housing (134), wherein the retainer sleeve (122) can be rotated between a receiving rotational position in which the recess (126) is aligned according to the alignment of the coupling end (130) of the mixing housing (134) when the inlets (142) are connected to the outlets (120) of the reservoir (112) and a closing rotational position in which at least part of the edge of the recess (128) of the retainer sleeve (122) overlaps parts of the coupling end (130) of the mixing housing (134).
摘要:
The invention relates to device for mixing two pasty materials, especially a dental impression material with a catalyst material. Said device is fitted with a housing (42) having a substantially cylindrical section (44) with two radial inlets (68, 70) for both pasty materials on the back end of said section and an outlet (52) for the mixed pasty materials on the front end of the cylindrical section (44). The inventive device also includes a driveable mixing shaft (38) extending through the cylindrical section (44) and rotationally mounted in the housing (42). The mixing shaft (38) has a plurality of rigid mixing elements (74) spaced from an axis (72) for mixing both pasty materials as they pass through the cylindrical section (44) of the housing (42). The mixing shaft (38) has at least one deflecting element (80) in the area of the inlets (68, 70) for supporting transport in axial direction of the pasty material entering the cylindrical section (44) of the housing (42) through the inlets (68, 70), wherein the at least one deflecting element (80) has a deflecting surface (82) extending around the axis (72) and which is inclined in relation to the radial plane of said axis (72).
摘要:
The invention relates to a container (1) for storing and dispensing at least one component, comprising at least one chamber (4, 4a, 4b), which is closed on a first side by a plug (9), and comprising an applicator (5), which is fastened on the first side. A flow connection between the at least one chamber (4, 4a, 4b) and the side of the applicator (5) facing away from the at least one chamber (4, 4a, 4b) is opened by means of a rotational motion of the applicator (5) in relation to the container (1) and a subsequent axial motion of the plug (9) in relation to the container (1) and the applicator (5), in particular as a result of pressure of the at least one component on the plug (9). The invention further relates to a method for storing and dispensing at least one component.
摘要:
The invention relates to a mixer (1) for mixing two components, in particular a hardenable dental material. Said mixed (1) comprises a mixer housing (2), a mixing element (4) and a cover (3). An annular chamber (17) which is fludically connected to the mixing area of the mixer housing (2) is formed in the mixer (1). Said chamber (17) is defined by the cover (3) and by a plate (18) provided on the mixer element (4). From the inlet connections (12, 13) leading into the mixer (1), one leads into the chamber (17) and the other leads upstream of the plate (18) into the mixing area.