3m Innovative Properties Company

Other

James E Garbe

Jimmie Rae Baran, Jr

Steven Joseph Hamrock

Thomas P Hedblom

Daniel C Duan

Cheryl L Moore

Radoslav Atanasoski

Jamieson C Keister

Chan U Ko

Joseph D Engebretson

Dinh Ba Le

Ryan A Bachman

Jimmie R Baran

The present disclosure generally relates to retroreflective elements including a core and a plurality of glass or glass-ceramic beads adjacent to the core. The retroreflective elements further include a plurality of particles having a diameter that is less than the diameter of the glass or glass ceramic beads in the retroreflective elements. The present disclosure also generally relates to articles (including, for example, retroreflective roadway liquid pavement markings) including these retroreflective elements and methods of making and using these retroreflective elements.

Retroreflective elements including particles

The inventors of the present disclosure discovered that use of a urea-modified polyurethane coating as the topcoat in a pavement marking tape has numerous advantages. The urea-modified polyurethane topcoat is the reaction product of an aspartic ester polyamine, a polyisocynate, and a polyol. The urea-modified topcoat is adjacent to a base layer. The base layer and topcoat form a pavement marking tape.

Pavement marking tape with modified polyurethane topcoat

A dual part polymerizable composition is provided including a first part containing at least one triorganoborane-amine complex having the structure Z&#x2014;NHR&#x2014;B(R)wherein: Z is an organic group; Ris H or an organic group; and each Ris independently an organic group bound to the boron atom through a carbon atom. The composition also includes a second part containing a polymerizable component and acidified nanoparticles including acid groups, where each acidified nanoparticle includes an inorganic core and acid groups. The acid groups include acid stabilizers and/or acid groups covalently bound to the inorganic core through an organic group. Each inorganic core is typically an inorganic oxide core, e.g., silica, zirconia, or alumina.

Acid-modified nanoparticles, dual part polymerizable compositions, and methods

Surface-modified nanoparticles wherein each nanoparticle includes an inorganic core and surface modifying groups, wherein the surface modifying groups include at least one triorganoborane-amine complex having the structure &#x2014;Z&#x2014;NHR&#x2014;B(R)wherein: Z is a divalent organic group; Ris H or an organic group; and each Ris independently an organic group bound to the boron atom through a carbon atom. The inorganic core is typically an inorganic oxide core, e.g., silica, zirconia, or alumina.

Triorganoborane-amino functionalized nanoparticles, compositions, and methods

A transdermal drug delivery device involving a macromonomer-containing acrylate or methacrylate copolymer, a softener, and a drug. Also a pressure sensitive skin adhesive involving a macromonomer containing acrylate or methacrylate copolymer and a softener.

Matrix for transdermal drug delivery

Novel carbonate compounds and novel carbamate compounds comprise at least one carbonate or carbamate moiety that is directly bonded only to groups selected from the group consisting of alkyl groups, cycloalkyl groups, alkenyl groups, cycloalkenyl groups, alkynyl groups, cycloalkynyl groups, and combinations thereof, the groups optionally containing one or more catenary heteroatoms. At least one of the directly-bonded groups comprises at least one sulfonyl moiety. The compounds are useful as solvents for the electrolyte salts used in electrochemical devices.

High-boiling electrolyte solvent

An electrolyte composition is featured that includes a solid, ionically conductive polymer, organically modified oxide particles that include organic groups covalently bonded to the oxide particles, and an alkali metal salt. The electrolyte composition is free of lithiated zeolite. The invention also features cells that incorporate the electrolyte composition.

Growing community of inventors

Stillwater, MN, United States of America

James E Garbe