Minnesota Mining and Manufacturing Company

Henry B Clark, Iii

Michael C Palazzotto

Peggy S Willett

David J Drath

Debra L Wilfong

George F Vesley

Patrick G Zimmerman

Jerry W Williams

Julian B Cooley

Myron T Pike

Acrylate-only and epoxy-acrylate thermoset resins exhibit high temperature damping behavior. These materials are suitable for damping vibrations in structures and component parts of devices where high temperature performance is required, such as in automobiles, aircraft, industrial equipment and appliances.

Vibration damping constructions using acrylate-containing damping

A tamper-indicating and authenticating label which provides a temporary visually perceptible indication that the label is authentic, and provides a permanent indication of tampering with the label. The label comprises a normally opaque microporous film which becomes substantially transparent upon application of a suitable liquid. The label includes tamper-indicating and authenticating indicia which are normally not visually perceptible when the microporous film is opaque, and which become visible when the microporous film is made transparent. The authenticating indicia is made temporarily visible to authenticate the label by applying a volatile liquid to the film to render it transparent, without dissolving the tamper-indicating indicia. Application of solvents in an attempt to defeat the adhesive of the label will cause the tamper-indicating indicia to bleed through to the surface of the label, providing a permanent indication of tampering. Application of high temperature in an attempt to defeat the adhesive of the label will collapse the microvoids of the film, permanently transparentizing the film and causing the tamper-indicating indicia be permanently visible. Application of oil in an attempt to defeat the adhesive of the label will permanently transparentizing the film and cause the tamper-indicating indicia be permanently visible. The microporous film can either be stretchy and permanently deformable, or brittle and easy to tear or break, to provide additional permanent indication of tampering.

Tamper-indicating and authenticating label

The present invention provides a pressure-sensitive adhesive composition and a method for producing the same. The pressure-sensitive adhesive composition is produced by the combination of at least one free-radically photopolymerizable monomer and at least one cationically polymerizable monomer and a suitable photoinitiation system consisting of at least one salt of a cationic organometallic complex, an optional additional free-radical initiator and the application of sufficient energy to photopolymerize same.

Energy curable cationcally and free-radically polymerizable

Method for treating oil and gas wells using foamable fluids containing methanol, as well as foamable compositions and novel fluorochemicals useful therein.

Growing community of inventors

Roseville, MN, United States of America

Henry B Clark, Iii