Henkel Ag & Company, Kgaa

Henkel Corporation

Henkel IP Holding Gmbh

Kevin J Welch

Matthew P Burdzy

Andrew D Messana

Robert P Cross

Brian R Einsla

Lynnette M Hurlburt

Anthony Francis Jacobine

John Gregory Woods

Steven Thomas Nakos

Dingsong Feng

Yu Chen

Yanbing Wang

Provided herein is a composition for use as a thermal interface material in a heat-generating device. The composition comprises a first part and a second part, the first part comprising polyisobutylene, a reactive diluent mixture, a catalyst, and one or more thermally conductive fillers, and the second part comprising polyisobutylene, the reactive diluent mixture, a silicone based cross-linker, an inhibitor and one or more thermally conductive fillers.

Thermal interface material

The present invention provides fast fixturing two part adhesive compositions which include a first part containing a (meth)acrylic component and a cure system for an epoxy resin component of the second part and a second part containing an epoxy resin component and a cure accelerator for the (meth)acrylic component of the first part.

Adhesive compositions

Curable sealant compositions having low temperature sealing ability improved over convention curable sealing compositions. The composition is flowable and can be cured to a cross linked form to provide cured reaction products that exhibit elastomeric properties. The curable elastomeric sealant composition can include a cross linkable elastomeric oligomer; an initiator or cross-linking agent; a glassy monomer and/or a rubbery monomer; and optionally one or more additives. Cured reaction products of the composition have a single Tg and retain a higher sealing force at low temperatures (but above the cured product Tg) as compared to a curable composition made from the same cross linkable elastomeric oligomer but without the glassy and/or rubbery monomer.

Curable elastomer compositions with low temperature sealing capability

A fuel cell, having improved sealing against leakage, includes a sealant disposed over the peripheral portions a membrane electrode assembly such that the cured sealant penetrates a gas diffusion layer of the membrane electrode assembly. The sealant is applied through liquid injection molding techniques to form cured sealant composition at the peripheral potions of the membrane electrode assembly. The sealant may be thermally cured at low temperatures, for example 130&#xb0; C. or less, or may be cured at room temperature through the application of actinic radiation.

Sealant integrated fuel cell components and methods and systems for producing the same

A fuel cell, having improved sealing against leakage, includes a fuel cell component having a cured sealant, wherein the cured sealant includes a telechelic-functional polyisobutylene, an organhydrogenosilane crosslinker, a platinum catalyst and a photoinitiator. The fuel cell component may be a cathode flow field plate, an anode flow field plate, a resin frame, a gas diffusion layer, an anode catalyst layer, a cathode catalyst layer, a membrane electrolyte, a membrane-electrode-assembly frame, and combinations thereof. A method for forming such a fuel cell includes the steps of providing a fuel cell component including a substrate; providing a mold having a cavity; positioning the mold so that the cavity is in fluid communication with the substrate; applying a curable liquid sealant composition into the cavity, wherein the curable sealant composition includes a telechelic-functional polyisobutylene, an organhydrogenosilane crosslinker, a platinum catalyst and a photoinitiator; and curing the composition with actinic radiation.

UV-curable fuel cell sealants and fuel cells formed therefrom

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Wallingford, CT, United States of America

Kevin J Welch