Technical Fibre Products Limited

Ucb S.a.

Hexcel Composites Limited

Johnson Matthey Fuel Cells Limited

Michael Jeschke

Jonathan David Brereton Sharman

Martin Richard Simmons

Ian Roy Harkness

James Matthew Cash

Rosemary Fisher

Victoria Jane Wright

Jonathan Brereton Sharman

A porous gas diffusion substrate that includes: (a) a porous non-woven web comprising carbon fibers; and (b) a carbonaceous residue; wherein the carbonaceous residue is embedded within the porous non-woven web; (c) a fluorinated polymer; and (d) inert particles wherein at least some of the carbon fibers of the porous non-woven web have a coating comprising the fluorinated polymer and inert particles is disclosed.

Gas diffusion substrate

A non-woven gas diffusion substrate including: (i) a non-woven carbon fiber web; (ii) a carbon particulate material; and 10 (iii) a hydrophobic binder characterized in that the non-woven gas diffusion substrate further includes a conductive material having a x:y aspect ratio from 0.01 to 100, a x:z aspect ratio of at least 500 and a y:z aspect ratio of at least 500.

A prepreg comprising resin and at least one fiber layer and further comprising an electrically insulating layer and an electrically conducting layer is provided, and particularly wherein the conductive layer is at or near the top surface, beneath that is the insulating layer and beneath that is a fiber/resin interleaf structure.

Composite materials

There is described a substantially planar, self supporting, sheet or film (optionally oriented) which comprises at least one layer comprising a first material which is very highly crystalline polymer (preferably polypropylene of 99% or greater isotacity) together with at least one second material in an amount sufficient to improve one or more of the barrier properties, mechanical properties and/or optical properties of the sheet. The second material comprises a (a) nucleating agent; (b) a polymeric material having a ring and ball softening point from about 110&#xb0; C. to about 170&#xb0; C. and/or (c) a hydrogenated resin such as dicyclopentadiene hydrogenated resin, a hydrogenated mixed monomer resin; and/or a resin obtainable from a mixture of a-methyl styrene, indene and/or vinyl toluene monomers. Processes for making such films and compositions for use in the process are also described. Such films are useful in shrink wrap applications for example wrapping tobacco products.

Growing community of inventors

Cumbria, United Kingdom

Michael Jeschke