3M Innovative Properties Company

Cornelia B Fuehrer

Thomas Klettke

Peter Bissinger

Markus Mikulla

Andrea Hailand

The invention relates to a composition comprising a prepolymer as component (A), wherein the prepolymer comprises aziridino groups and is characterized by an equivalent weight EW1, a crosslinker as component (B), wherein the crosslinker has a structure being different from the structure of the prepolymer and comprises aziridino groups and is characterized by an equivalent weight EW2, an initiator as component (C) being able to start curing of the composition, optionally filler(s) as component (D) and optionally additive(s) as component (E), wherein equivalent weight is defined as (molecular mass of the molecule)/(number of aziridino groups present in the molecule) and wherein EW1&#x3e;EW2. The invention also relates to the use of the composition for coating, sealing, moulding, adhering, making impressions, producing a dental material.

Composition containing aziridino groups and use thereof

The invention relates to a composition comprising a prepolymer as component (A), wherein the prepolymer comprises aziridino groups and is characterized by an equivalent weight EW1, a crosslinker as component (B), wherein the crosslinker has a structure being different from the structure of the prepolymer and comprises at least three 2-alkyl-substituted aziridino groups and is characterized by an equivalent weight EW2, an initiator as component (C) being able to start curing of the composition, optionally filler(s) as component (D) and optionally additive(s) as component (E), wherein equivalent weight is defined as (molecular mass of the molecule)/(number of aziridino groups present in the molecule) and wherein EW1&#x3e;EW2. The invention also relates to the use of the composition for coating, sealing, molding, adhering, making impressions, producing a dental material.

Composition containing aziridino groups, method of production and use thereof

The invention relates to an initiator comprising at least one structural element characterized by the following formula (I) wherein Xis a non or low coordinating anion, R1, R2, R3, R4 are independently linear, cyclic or branched C-Calkyl or alkylene groups, wherein one or more of the methylene groups contained in the alkyl or alkylene group can be substituted by &#x2014;CO&#x2014;, &#x2014;CONH&#x2014;, &#x2014;CON(CH)&#x2014;, &#x2014;S&#x2014; and/or &#x2014;O&#x2014;, and wherein R1, R2, R3 and/or R4 can act as a bridging element connecting two or more structural elements. The invention is also related to a process of producing the initiator and to a curable composition comprising the initiator, a process for producing the curable composition a kit comprising a cationically curable composition and the inventive initiator and the use of the initiator or the curable composition comprising the initiator for various applications, especially in the dental field. 

Sulfonium initiators, process for production and use in cationic polymerizable compositions

The present invention relates to a composition with enhanced speed of set, especially to a method of making rubber-like elastomers with improved hardening characteristics. In this respect the present invention provides a composition comprising with respect to the cured composition a ethylene imine group containing component A, a SO&#x2014;NH group containing component B and an initiator C. Optionally additives like modifiers, fillers, dyes, pigments, thixotropic agents, flow improvers, polymeric thickeners, surfactants, odorous substances, diluters and flavorings can be added.

Growing community of inventors

Wertach, Germany

Cornelia B Fuehrer