Abstract: The inventive dental composition comprises (a) a part A comprising at least one polyacid and at least one polymerizable component; and (b) a part B comprising water, wherein the composition further comprises an oxidizing agent, a reducing agent, and reactive fillers in at least one of part A or part B and wherein at least one of the polyacid, oxidizing agent, and reducing agent is in a disperse phase. The dental composition can be used in many dental applications and is particularly suited for use as a cement.

Abstract: A try-in paste, kit, and method of use, wherein the try-in paste includes: a polyalkylene glycol that is liquid at room temperature; a polyalkylene glycol that is solid at room temperature; and a particulate material; wherein the polyalkylene glycols are present in amounts to provide a paste having a consistency of about 20 mm to about 50 mm; and wherein the particulate material is present in an amount to provide a try-in paste of a shading that matches the shading of a corresponding polymerized dental cement.

Abstract: A try-in paste, kit, and method of use, wherein the try-in paste includes: a polyalkylene glycol that is liquid at room temperature; a polyalkylene glycol that is solid at room temperature; and a particulate material; wherein the polyalkylene glycols are present in amounts to provide a paste having a consistency of about 20 mm to about 50 mm; and wherein the particulate material is present in an amount to provide a try-in paste of a shading that matches the shading of a corresponding polymerized dental cement.

Abstract: The inventive dental composition comprises (a) a part A comprising at least one polyacid and at least one polymerizable component; and (b) a part B comprising water, wherein the composition further comprises an oxidizing agent, a reducing agent, and reactive fillers in at least one of part A or part B and wherein at least one of the polyacid, oxidizing agent, and reducing agent is in a disperse phase. The dental composition can be used in many dental applications and is particularly suited for use as a cement.

Abstract: The present invention relates to electronic assemblies which include an elastomeric member made of a cured, room-temperature curable polysiloxane composition. When the assemblies are used to electrically interconnect a first contacting site on a first electronic device to a second contacting site on a second electronic device, the stress-relaxation resistant properties of the elastomer enhance local contact force to maintain a reliable connection.

Abstract: The present invention provides an addition-curable composition containing an inorganic, organic or organometalic compound of palladium in an amount effective to reduce the amount of hydrogen gas evolved in the reaction of the composition. A preferred embodiment is a dental impression material composition comprising: (a) an addition-curable compound; (b) a crosslinker; (c) a platinum-containing catalyst; and (d) a palladium compound. This generally provides a positive gypsum model of, for example, a dental impression that is substantially free of pits.

Abstract: The present invention provides novel dental impression materials, the cure of which can be monitored visually, comprising: (1) a curable silicone polymer; (2) a crosslinker compound containing silicon-bonded-hydrogen groups; (3) a hydrosilation catalyst; and (4) one or more cure-indicating dyes that exhibit a color change in the presence of a silicon-bonded-hydrogen compound and a hydrosilation catalyst. The cure-indicating dye provides the composition with an initial pre-cure color and a different post-cure color. As a result of this change in color, the state of cure of the impression material can be visually monitored.

Abstract: The present invention provides novel hydrosilation-curable compositions, the cure of which can be monitored visually, comprising: (1) an ethylenic compound; (2) a compound containing silicon-bonded-hydrogen groups; (3) a hydrosilation catalyst; and (4) one or more cure-indicating dyes with light absorption in the visible spectrum that exhibit a color change in the presence of a silicon-bonded-hydrogen compound and a precious metal hydrosilation catalyst. The cure-indicating dye provides the composition with an initial pre-cure color and a different post-cure color. As a result of this change in color, the state of cure of the composition can be visually monitored.

Abstract: The present invention provides shelf-stable RTV silicones which are useful for preparing sealants, caulks, adhesives, coatings, molding materials, lithographic plates, release liners and reflective sheets. The silicone composition of the present invention comprises: (a) a curable silicone polymer, e.g., vinyl-containing organopolysiloxane, (b) a crosslinker, e.g., organohydrogenpolysiloxane, (c) a platinum catalyst of the Karstedt type and (d) an amine stabilizer.