Minnesota Mining and Manufacturing Company

3M Innovative Properties Company

Minneapolis Mining and Manufacturing Company

George F Vesley

Patrick G Zimmerman

Craig S Chamberlain

John D Moon

Bruce A Nerad

Louise A Ziegler

Robin Edgar Wright

Gaddam N Babu

Chris A Minick

George W Frost

Laurence R Gilbert

Jerry W Williams

William C Tait

Pierre H LePere

Jerome W McAllister

Brandon L Cordts

Charlotte M Palmgren

Glen Connell

Stephen A Miller

Alan H Paulson

Mark S Edberg

Robert D Anderson

Robert C Mehner

Thomas P Klun

Michael C Palazzotto

Robert J DeVoe

Greggory S Bennett

William A Huffman

Gary W Maier

Lang N Nguyen

Louis E Winslow

Gordon G Johnson

David W Erismann

Jurgen Klingen

Kejian Chen

Henry B Clark, Iii

Donald L Esmay

Bryan L Klaenhammer

Peter M Seiler

Biing-Huei D Su

Biing-Huel D Su

Ingrid E Blair

Scott N Iverson

Ronald J Engfer

A method of providing a fire barrier that includes coating an opening in a structure with a composition that includes an elastomer. The composition is substantially free of volatile organic compounds and, when dry, exhibits a tensile strength of from about 300 psi to about 1500 psi, at least about 600% elongation, a modulus of from about 200 psi to about 600 psi, and a tensile toughness of greater than 10 in-lb.

Method of providing a fire barrier and article therefor

An aqueous fire barrier composition including a latex that includes a polymer, a polyol having 2, 3 or 4 hydroxy groups and a molecular weight of from about 75 to about 1200, and an intumescent agent.

Aqueous intumescent fire barrier composition

The present invention provides methods of manufacturing a viscoelastic article by a process that includes coating a release surface with a curable composition and then curing the composition to form the viscoelastic article. Viscoelastic articles manufactured according to the methods of the present may be constructed to be self-supporting.

Method of making a viscoelastic article by coating and curing on a reusable surface

Free radical polymerization method

Disclosed is a novel, multi-stage irradiation process for the production of an acrylic-based adhesive or pressure-sensitive adhesive tape. The first irradiation step or stage employs electromagnetic radiation at a relatively low average intensity (i.e., 0.1 to 20 mW/cm ) and the subsequent step employs electromagnetic radiation at a relatively higher average intensity (i.e., greater than 20 mW/cm .) Also disclosed are acrylic-based psa tape materials made by the novel process.

Multi-stage irradiation process for production of acrylic based adhesives and adhesives made thereby

Disclosed is a novel, multi-stage irradiation process for the production of acrylic-based compositions such as adhesives or pressure-sensitive adhesive tapes. The first irradiation step or stage employs electromagnetic radiation at a relatively low average intensity (i.e., 0.1 to 20 mW/cm,) to effect a relatively low extent of monomer conversion, and the subsequent step employs electromagnetic radiation at a relatively higher average intensity (i.e., greater than 20 mW/cm,) to complete the photopolymerization. Also disclosed are acrylic-based psa tape materials made by the novel process.

Multi-stage irradiation process for production of acrylic based compositions and compositions made thereby

Acrylic syrup curable to a crosslinked viscoelastomeric material

A polymer-dispersed liquid crystal device comprises a multiplicity of droplets of a birefringent, functionally nematic liquid crystal material dispersed in a matrix comprising the reaction product of ultraviolet radiation polymerizable materials. The device specularly transmits incident light as a function of the magnitude of an electric field applied across the device. The difference between a first applied voltage corresponding to a first percentage of the total incident light transmitted by the device as specular light and a second applied voltage corresponding to a second percentage of the total incident light transmitted by the device as specular light is greater than or equal to 15 volts. As a result, a polymer-dispersed liquid crystal device according to the invention displays a variable grey scale which has a uniform optical transmission. A method for preparing a PDLC device in general is also disclosed.

Polymer-dispersed liquid crystal device having an

An optically responsive film that includes liquid crystal dispersed in a crosslinked polymer matrix that includes the reaction product of an isotropic polymerizable mixture that includes at least one vinyl ether.

Light modulating device having a vinyl ether-based matrix

An optically responsive film that includes liquid crystal dispersed in a polymer matrix that includes the reaction product of (1) one or more polymerizable matrix reactants other than an acid reactant and (2) at least one copolymerizable acid reactant.

Light modulating device having a matrix prepared from acid reactants

In one aspect, an optically responsive film in which liquid crystal is dispersed in a matrix that includes siloxane linkages. The film has a transmissivity at -20.degree. C. that is substantially the same as the transmissivity at 20.degree. C. and a V.sub.90 at -20.degree. C. that is less than twice the value at 20.degree. C. In another aspect, an optically responsive film in which liquid crystal is dispersed in a matrix that includes the polymerization product of at least one mercapto-functional siloxane. In another aspect, an optically responsive film in which liquid crystal is dispersed in a matrix that includes the polymerization product of at least one multi-functional ene and at least one multi-functional silicon hydride. In another aspect, an optically responsive film in which liquid crystal is dispersed in a matrix that includes the reaction product of at least one multi-functional vinyl silane and at least one multi-functional thiol.

Light modulating device having a silicon-containing matrix

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

Growing community of inventors

Hudson, WI, United States of America

George F Vesley