3m Innovative Properties Company

Dana R Reed

Thomas P Klun

George W Griesgraber

Richard John Pokorny

Ahmed Salih Abuelyaman

Daniel J Skamser

Mario Alberto Perez

Wayne Scott Mahoney

James D Hansen

Robert Steven Clough

Clinton L Jones

Alexander J Kugel

Eric Wayne Nelson

Saswata Chakraborty

Ryan B Prince

John M Riedesel

Chad M Amb

Ian Dailey

Benjamin C MacMurray

Stuart E Fores

Tianyu Wu

Cori S Apel

Cori S Griesgraber

An orthodontic article is described comprising the reaction product of a free-radically polymerizable resin; a first free-radical photoinitiator having sufficient absorbance at a first wavelength range; and a second free-radical initiator selected from a second photoinitiator having sufficient absorbance at a second wavelength range, wherein the second wavelength range is different than the first wavelength range, or a thermal free-radical initiator. In some embodiments, the first free-radical photoinitiator exhibits a maximum absorbance at a wavelength of the range of 370-380 nm or 320-330 nm and/or comprises photoinitiator groups selected from acyl phosphine oxide or alkyl amine acetophenone. Also described are photopolymerizable compositions and methods.

Orthodontic articles comprising polymerized composition comprising at least two free-radical initiators

Orthodontic articles and polymerizable resin compositions are described. The orthodontic article comprises a cured composition comprising the reaction product of free-radically polymerizable resin comprising 30 to 70 wt. %, inclusive, of at least one urethane component, and 25 to 70 wt. %, inclusive, of reactive diluent(s) comprising at least one monofunctional (meth)acrylate monomer. The polymerizable resin comprises no greater than 35 wt. % of reactive diluent(s) having a high affinity for water. Reactive diluent(s) such as monofunctional (meth)acrylate monomers having a high affinity for water have low log P values. In one embodiment, the polymerizable resin comprises at least one acidic monomer.

Orthodontic articles comprising cured free-radically polymerizable composition with improved strength in aqueous environment

Two-part coating compositions are described comprising an aliphatic cyclic secondary amine and methods of coating surfaces of a (e.g. drinking water) pipeline.

Composition comprising cyclic secondary amine and methods of coating drinking water pipelines

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Minneapolis, MN, United States of America

Dana R Reed