Element (A) of conducting system of a fuel cell comprises an internal layer (I) in contact with the promoted medium consisting of polyolefin molded body, which is connected with a layer (II) of an ethylene vinyl alcohol molded material, where the connectio...

An element for a conduction system in a fuel cell has an inner, conducted medium-contacting layer of a polyamide molding material together with >=1 further layer comprising a further polyamide, an optionally functionalized polyolefin or an EVOH copolymer.

Precipitated silica (I) has the following characteristics: BET surface area of 178-302 m 2>/g; CTAB surface area >= 170 m 2>/g; DBP-number 200-300 g/(100 g); Sears number V 2 10-35 ml/(5 g). Independent claims are also included for the following: (1) prepa...

Hydrophobically precipitated silica with a BET surface area of less than 110 m 2>/g, a cetyl trimethyl ammonium chloride (CTAB) surface area of less than 150 m 2>/g, a BET/CTAB ratio of less than 3, a carbon content of more than 3.1% and a pH of more than ...

Carbon black (A) having organic groups (X) that include a thiocyanato group. Independent claims are also included for the following: (1) rubber mixture (B) that includes (A); and (2) shaped articles produced from (B) by vulcanization.

An element of a conduit system for a fuel cell comprises an inner layer of polyester moulding material (in contact with the transported medium) and at least one of the following: (a) a layer of polyamide; (b) a layer of functionalised polyolefin; (c) a lay...

Mercaptosilanes with 9-30C alkoxy as well as methoxy and/or ethoxy substituents are new. Mercaptosilanes with 9-30C alkoxy as well as methoxy and/or ethoxy substituents and of formula RO-Si(R1O)2-R2-SH (I) or R1O-Si(RO)2-R2-SH (II) are new when R1 is a mix...

In a fuel cell feed system element, the part in contact with the fed medium consists of a polyester molding composition. An Independent claim is also included for a fuel cell system containing this element.

A precipitated silicic acid (I) has a BET (Brunauer Emmett Teller) surface area of at least 135 m/g and a CTAB (cetyltrimethylammonium bromide) surface area of at least 75 m/g. The ratio of BET/CTAB surface areas is at least 1.7. Independent claims are als...

A catalytic compound comprising an aggregate comprising a carbon phase and a precious metal-containing species phase.