University of Missouri

Other

Midwest Research Institute

J David Eick

Cecil C Chappelow

Charles S Pinzino

Thomas J Byerley

Joel D Oxman

Andrew J Holder

Shin-Shi Chen

Li Jeang

Sharon M Rozzi

James Code

A visible light cationically photopolymerizable composition is provided. This composition includes an expanding monomer and a dioxirane. More specifically, the expanding monomer used in this composition is one or more dioxiranyl tetraoxaspiro[5.5]undecanes. The composition of the present invention may be used as a matrix resin for dental restorative materials. Another embodiment of the present invention is various novel dioxiranyl tetraoxaspiro[5.5]undecanes.

Photopolymerizable compositions that include alicyclic/aromatic dioxiranes and novel dioxiranyl tetraoxaspiro [5.5] undecanes

A visible light cationically photopolymerizable composition is provided. This composition includes an expanding monomer and a dioxirane. More specifically, the expanding monomer used in this composition is one or more dioxiranyl tetraoxaspiro&lsqb;5.5&rsqb;undecanes. The composition of the present invention may be used as a matrix resin for dental restorative materials. Another embodiment of the present invention is various novel dioxiranyl tetraoxaspiro&lsqb;5.5&rsqb;undecanes.

Dioxiranyl tetraoxaspiro &lsqb;5.5&rsqb; undecanes

Spiroorthocarbonates containing epoxy groups

An adhesive composition that includes a mixture of a cationically polymerizable component, an acidic component, and an initiator is provided. Preferably, the initiator comprises an iodonium salt, a visible light sensitizer, and an electron donor compound, wherein the initiator has a photoinduced potential greater than or equal to that of N,N-dimethylaniline in a standard solution of 2.9&times;10 moles/g diphenyl iodonium hexafluoroantimonate and 1.5&times;10 moles/g camphorquinone in 2-butanone. This adhesive composition is cationically polymerizable and is able to bond to hard tissue and cationic restorative materials upon curing.

Cationically polymerizable adhesive composition containing an acidic component and methods and materials employing same

Photopolymerizable vinyl ether based monomeric formulations and polymerizable compositions which may include certain novel spiroorthocarbonates

Copolymer compositions are provided, including those which undergo less than .+-.1.0% bulk polymerization shrinkage and are useful as strain-free composites, high-strength adhesives, and precision castings. The copolymer compositions are formed from the cationic initiated polymerization of alicyclic spiroorthocarbonate monomers and epoxy resin monomers or comonomers. A preferred spiroorthocarbonate monomer is 2,3,8,9-di(tetramethylene)-1,5,7,11-tetraoxaspiro-[5,5]undecane. A preferred epoxy resin is a three component epoxy comonomer mixture of (i) diglycidyl ether of bisphenol A, (ii) 3,4-epoxycyclohexanemethyl-3,4-epoxycyclohexane carboxylate, and (iii) vinyl cyclohexene dioxide, preferably in a ratio of 5:4:1 by weight.

Polymeric compositions and composites prepared from spiroorthocarbonates

Polymeric compositions are provided which are the reaction product of spiroorthocarbonates and epoxy resins and undergo reduced bulk polymerization shrinkage. The spiroorthocarbonates are of the general formula: ##STR1## wherein X=O or S;

Polymeric compositions and composites prepared from

Compounds are described which are S-(.omega.-hydroxyalkyl) esters of thioacrylic and thiomethacrylic acids. The compounds have the formula: ##STR1## wherein: R is hydrogen or methyl; and

S-(.omega.-hydroxyalkyl) esters of thioacrylic and thiomethacrylic acids

Novel trans-beta-isocyanatoacrylate esters, their preparation and use in forming novel polymeric compositions, including polymers useful as adhesives, are disclosed. The trans-beta-isocyanatoacrylate esters have the formula: ##STR1## wherein R is C.sub.1 -C.sub.18 linear or branched alkyls; C.sub.5 -C.sub.6 cycloalkyl; aryl; alkaryl; aralkyl; C.sub.1 -C.sub.18 halogenated alkyl; halogenated aryl; C.sub.1 -C.sub.8 alkoxyalkyl; or alkoxyaryl.

Growing community of inventors

Gladstone, MO, United States of America

J David Eick