3m Innovative Properties Company

David Scott Seitz

Ryan C Shirk

Jinsheng Zhou

Moses Mekala David

Gary F Howorth

Andrew B Supina

Dale L May

Mieczyslaw H Mazurek

Michael Andrew Yandrasits

Kanta Kumar

Kazuhiko Mizuno

Larry A Meixner

Eric Joseph Hanson

Elizabeth C Edblom

Stefan O Dietrich

Karl T McKeague

Eric F Funkenbusch

A composite membrane for selectively pervaporating a first liquid from a mixture comprising the first liquid and a second liquid. The composite membrane includes a porous substrate comprising opposite first and second major surfaces, and a plurality of pores. A pore-filling polymer is disposed in at least some of the pores so as to form a layer having a thickness within the porous substrate. The polymer is more permeable to the first liquid than the second liquid but not soluble in the first liquid or the second liquid. The composite membrane may be asymmetric or symmetric with respect to the amount of pore-filling polymer throughout the thickness of the porous substrate.

Composite membranes and methods of use

A separation membrane for selectively separating (e.g., pervaporating) a first fluid (e.g., a first liquid) from a mixture comprising the first fluid (e.g., first liquid) and a second fluid (e.g., second liquid), wherein the separation membrane includes a polymeric ionomer that has a highly fluorinated backbone and recurring pendant groups according to the following formula (Formula I): &#x2014;O&#x2014;R&#x2014;[&#x2014;SO&#x2014;N(Z+)&#x2014;SO&#x2014;R&#x2014;]&#x2014;[SO]-Q wherein: Ris a perfluorinated organic linking group; R is an organic linking group; Zis H, a monovalent cation, or a multivalent cation; Q is H, F, &#x2014;NH, &#x2014;NH, &#x2014;OY, or &#x2014;CF+1; Yis H, a monovalent cation, or a multivalent cation; x=1 to 4; m=0 to 6; and n=0 or 1; with the proviso that at least one of morn must be non-zero.

Polymeric ionomer separation membranes and methods of use

A composite membrane for selectively separating (e.g., pervaporating) a first fluid (e.g., first liquid such as a high octane compound) from a mixture comprising the first fluid (e.g., first liquid such as a high octane compound) and a second fluid (e.g., second liquid such as gasoline). The composite membrane includes a porous substrate comprising opposite first and second major surfaces, and a plurality of pores. A pore-filling polymer is disposed in at least some of the pores so as to form a layer having a thickness within the porous substrate. The composite membrane further includes at least one of: (a) an ionic liquid mixed with the pore-filling polymer; or (b) an amorphous fluorochemical film disposed on the composite membrane.

Composite membranes with improved performance and/or durability and methods of use

A structure comprising at least one inorganic layer comprising inorganic materials suitable for use in a pollution control device. A friction-inducing material is disposed on at least one side of the inorganic layer. The deposited friction-inducing material defines a higher friction area exhibiting a static coefficient of friction higher than that of the inorganic materials. A lower friction layer is disposed so as to cover at least a portion of the higher friction area and define an exposed surface area of the structure. The exposed surface area exhibits a lower static coefficient of friction than that of the higher friction area. The lower friction layer no longer covers a substantial portion of the higher friction area, after the pollution control device is assembled.

Pollution control device structure with lower friction surface and underlying higher friction surface

A mounting mat () comprising at least one inorganic layer () comprising inorganic materials suitable for mounting a pollution control element in a pollution control device. A friction-inducing material () is disposed on at least one side of the inorganic layer (). The deposited friction-inducing material () defines a higher friction area exhibiting a static coefficient of friction higher than that of the inorganic materials. A lower friction layer () is disposed so as to cover at least a portion of the higher friction area and define an exposed surface area of the mounting mat (). The exposed surface area exhibits a lower static coefficient of friction than that of the higher friction area. The lower friction layer () no longer covers a substantial portion of the higher friction area, after the mounting mat () mounts a pollution control element () in a pollution control device ().

Mounting mat with lower friction surface for assembling and higher friction surface for mounting

A structured paper release liner () for use with an article () backed with a pressure sensitive adhesive, an adhesive-backed article assembly () and methods of making each are disclosed. The liner () comprises a piece of paper () having a release side free of a structural support layer, a back side, and a structured release surface () having a pattern formed into the paper () on the release side. A release material is on the structured release surface of the paper. The pattern formed in the paper () is designed so as to form fluid egress channels in a bonding surface of the pressure sensitive adhesive (). The fluid egress channels define a structured bonding surface () having exit pathways for fluid to bleed out from behind the article when the structured bonding surface () is adhered to or otherwise disposed on a substrate.

Structured paper release liner, adhesive-backed article assembly and method of making same

A friction material for a friction facing member useful for transmitting torque includes a backing having a front surface and a rear surface. A plurality of precisely shaped friction composites defining patterned friction coating are attached to the front surface of the backing. The precisely shaped friction composites include a plurality of friction particles dispersed in a binder. In one embodiment, the friction material has an elastic modulus of about 10 dynes/cm or less.

Growing community of inventors

Woodbury, MN, United States of America

David Scott Seitz