3m Innovative Properties Company

Paul T Hines

Bharat R Acharya

Derek J Dehn

Clinton P Waller, Jr

Satinder K Nayar

Brandon Alan Bartling

Stephen A Johnson

Ronald David Jesme

Mario Alberto Perez

Charles L Bruzzone

William J Kopecky

Ta-Hua Yu

Rajdeep S Kalgutkar

Michael S Graff

Jennifer J Sokol

Sergei A Manuilov

Sebastian Goris

Mary E Johansen

Lesbia E Giron

A magnetic shielding film includes opposing first and second major surfaces and a plurality of particles dispersed therebetween, each particle having a magnetic permeability, a thickness H along a thickness direction of the particle, and a longest dimension L along a length direction of the particle orthogonal to the thickness direction, L/H greater than or equal to 2, the particles defining a plurality of voids therebetween, the length directions of at least 60% of the particles oriented within 5.5 degrees of a same orientation direction.

Orientation of magnetic fillers to optimize film properties

Polymer matrix composite comprising a porous polymeric network; and a plurality of intumescent particles distributed within the polymeric network structure; wherein the intumescent particles are present in a range from 15 to 99 weight percent, based on the total weight of the intumescent particles and the polymer (excluding the solvent); and wherein the polymer matrix composite volumetrically expands at least 2 times its initial volume when exposed to at least one temperature greater than 135° C.; and methods for making the same. The polymer matrix composites are useful, for example, as fillers, thermally initiated fuses, and fire stop devices.

Polymer matrix composites comprising intumescent particles and methods of making the same

A multilayer film comprises first, second, and third layers. The first layer comprises at least one aromatic polyester, and has a loss modulus at 1 hertz and 25&#xb0; C. of at least 70 megapascals. The second layer is thermoplastic and has a loss modulus at 1 hertz and 25&#xb0; C. of less than or equal to 60 megapascals and comprises a thermoplastic elastomer and a polyamide. The third layer contacts the second layer opposite the first layer and has a loss modulus at 1 hertz and 25&#xb0; C. of at least 70 megapascals. The second layer is sandwiched between the first and third layers. A method of making the multilayer film by coextrusion is also disclosed.

Multilayer film and method of making the same

Polymer matrix composite comprising a porous polymeric network; and a plurality of intumescent particles distributed within the polymeric network structure; wherein the intumescent particles are present in a range from 15 to 99 weight percent, based on the total weight of the intumescent particles and the polymer (excluding the solvent); and wherein the polymer matrix composite volumetrically expands at least 2 times its initial volume when exposed to at least one temperature greater than 135&#xb0; C.; and methods for making the same. The polymer matrix composites are useful, for example, as fillers, thermally initiated fuses, and fire stop devices.

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Prior Lake, MN, United States of America

Paul T Hines