Abstract: Described are novel fluoride ion-releasing acrylic or methacrylic acid-based monomers, fluoride ion-releasing dental resin materials prepared from the monomers, and processes for preparing the monomers and dental resin materials. The monomers of the invention are prepared in good yield from readily available starting materials. Dental resin materials of the invention exhibit excellent sustained fluoride ion release.

Abstract: Described are preferred methods for promoting interfacial bonding between surfaces containing oxide, hydrous oxide or hydroxyl groups. The methods involve attaching silane coupling agents to the opposed surfaces and, in turn, bonding the opposed silane coupling agents to each other to thereby promote interfacial bonding between the surfaces. Also described are preferred compositions for promoting such interfacial bonding.

Abstract: Polymer-bound mixed carboxylic anhydrides can be prepared under mild conditions by the condensation of carboxylic acids (including N-protected amino acids) with polymer-bound acid chlorides. These mixed anhydrides function as polymeric reagents in the sense that they will react readily with monomeric nucleophiles such as amines to form amide or peptide products, depending on the identities of the mixed anhydride and amine reactants. However, in spite of their reactivity, these polymeric mixed anhydrides exhibit a significant degree of stability under conditions of prolonged storage, which suggests that such compounds have commercial utility as a relatively stable form of highly activated carboxylic acids. The polymeric support can be reactivated and recycled for repeated use in the derivatization process.

Abstract: Described are novel fluoride ion-releasing acrylic or methacrylic acid-based monomers, fluoride ion-releasing dental resin materials prepared from the monomers, and processes for preparing the monomers and dental resin materials. The monomers of the invention are prepared in good yield from readily available starting materials. Dental resin materials of the invention exhibit excellent sustained fluoride ion release.

Abstract: Polymer-bound mixed carboxylic anhydrides can be prepared under mild conditions by the condensation of carboxylic acids (including N-protected amino acids) with polymer-bound acid chlorides. These mixed anhydrides function as polymeric reagents in the sense that they will react readily with monomeric nucleophiles such as amines to form amide or peptide products, depending on the identities of the mixed anhydride and amine reactants. However, in spite of their reactivity, these polymeric mixed anhydrides exhibit a significant degree of stability under conditions of prolonged storage, which suggests that such compounds have commercial utility as a relatively stable form of highly activated carboxylic acids. The polymeric support can be reactivated and recycled for repeated use in the derivatization process.

Abstract: Described are preferred processes for hydrolyzing activated esters using, as catalysts, siloxanes having 4-dialkylaminopyridyl groups incorporated into their polymer backbones. The preferred siloxane catalyst materials demonstrate unexpected catalytic efficacy in the hydrolysis as well as enzyme-like selectivity for ester substrates.

Abstract: Described are preferred methods for promoting interfacial bonding between surfaces containing oxide, hydrous oxide or hydroxyl groups. The methods involve attaching silane coupling agents to the opposed surfaces and, in turn, bonding the opposed silane coupling agents to each other to thereby promote interfacial bonding between the surfaces. Also described are preferred compositions for promoting such interfacial bonding.

Abstract: Silanes and Siloxanes incorporating the 4-dialkylaminopyridine functionality are described. Preferred silanes are catalytically active and also serve as precursors to the siloxanes. Preferred polysiloxanes incorporating DAAP functionality exhibit excellent physical and dynamic-mechanical properties while maintaining a substantial percentage of the DAAP catalytic behavior.

Abstract: Silanes and siloxanes incorporating the 4-dialkylaminopyridine functionality are described. Preferred silanes are catalytically active and also serve as precursors to the siloxanes. Preferred siloxanes incorporating DAAP functionality exhibit excellent physical and dynamic-mechanical properties while maintaining a substantial percentage of the DAAP catalytic behavior.

Abstract: Solid-phase copolymers of 4-vinylpyridine or 4-vinylpyridine 1-oxide may be employed as catalysts in the formation of acid anhydrides. A water soluble polymer of 4-vinylpyridine 1-oxide may also be employed as a catalyst in the formation of acid anhydrides.