Abstract:
The present invention relates to a composite article comprising at least two layers (A) of component a) and at least one layer (B1) of component b). The respective layers (A) and (B1) are alternately linked together. The component a) has a compressive modulus of at least 10 MPa and can, therefore, be considered as a comparably rigid component, which can be also assigned as rigid core element, in contrast thereto the component b) has a compression stress value at a compression of 40 % of not more than 20 kPa. By consequence, component b) can be considered as a comparably flexible (elastic) component. Therefore, the composite articles according to the present invention can be considered as semi-flexible materials due to the combination of alternating rigid and flexible segments (layers) within those composite articles. The composite articles according to the present invention may further comprise at least one layer (B2) of component b), which layer is also alternately linked together with the respective layers (A). In addition, at least one layer (B2) crosses at least one layer (B1) with an angle a in the range of 0°
Abstract:
The present invention relates to the use of metal salts of formula (I) in which M is the equivalent of a cobalt or iron ion, Q is C4-C22-alkyl, C4-C22-alkenyl, aryl or hetaryl, L is carbonyl or sulphonyl, X is a monovalent inorganic anion, m is 1, 2 or 3, y is 0, 1 or 2, and n is the sum of m and y and may be 2 or 3, for marking combustible bitumen, and relates also to such substances containing one or more of the aforementioned metal salts.
Abstract:
The invention concerns the use of beta -dicarbonyl or aromatic ortho-hydroxycarbonyl compounds to mark hydrocarbons, as well as hydrocarbons containing beta -dicarbonyl or aromatic ortho-hydroxycarbonyl compounds as markers and a method of assaying beta -dicarbonyl or aromatic ortho-hydroxycarbonyl compounds in hydrocarbons.
Abstract:
Se describen el uso de compuestos de beta-dicarbonilo o bien compuestos aromáticos de orto-hidroxicarbonilo como marcadores para hidrocarburos, hidrocarburos que comprenden compuestos de beta-dicarbonilo o bien compuestos aromáticos de orto-hidroxicarbonilo como marcadores, así como un método para detectar compuestos aromáticos de orto-hidroxicarbonilo en hidrocarburos.