Abstract: Silicon dioxide powder in the form of aggregated primary particles has a specific pore length L of 2.5×105 to 4×105 m/?g, where L is defined as the quotient formed from the square of the BET surface area and the cumulative 2-50 nm pore volume determined using the BJH method, as per the formula L=(BET×BET)/BJH volume. A silanized silicon dioxide powder in the form of aggregated primary particles has a specific pore length L of 2.5×105 to 3.5×105 m/?g, and in it the surface area of the aggregates or parts thereof is occupied by chemically bound silyl groups. A thermal insulant comprises the silicon dioxide powder and/or the silanized silicon dioxide powder.

Abstract: The invention relates to a method for producing a polymer layer composite that comprises a plurality of polymer layers and at least one polymer layer contains a laser-sensitive component, said method consisting of the following steps: A) first personalized information is applied to at least one of the polymer layers by means of an inkjet printing method as a colored inkjet printed layer, B) the polymer layer with the colored inkjet printed layer is then joined to the other polymer layers, the polymer layer with the colored inkjet printed layer being arranged between two other polymer layers, C) second personalized information is inscribed into the polymer layer composite obtained in step B) by means of laser engraving. The invention also relates to a thus obtained polymer layer composite, a security and/or valuable document comprising a polymer layer composite of said type and to a method for producing a security and/or valuable document of said type.

Abstract: The invention relates to a sandwich structure (1) comprising a flexible Organic Light Emitting Diode (OLED) (2), wherein the opposite outer surfaces (3, 4) of said OLED (2) consist of a glass material, and at least one layer (5, 6) provided on at least one of said outer surfaces (3, 4) of said OLED (2) and comprising an organic polymer material, wherein said layer (5, 6) comprising an organic polymer material and said outer surface (3, 4) consisting of glass are bonded to each other in a stacking manner by a bonding layer (7, 8).

Abstract: The invention relates to a method for producing a security and/or valuable document containing a polymer layer composite or consisting thereof, said polymer layer composite being formed from a polymer layer partial composite and a polymer cover layer and the polymer layer partial composite and/or the polymer cover layer containing a laser sensitive component, consisting of the followings steps: A) first personalized information is applied to the polymer layer partial composite by means of an inkjet printing method as a colored inkjet printed layer, B) the polymer cover layer is applied to the inkjet printed layer and is joined to the polymer layer partial composite by thermal lamination, and C) second personalized information is inscribed into the polymer layer composite of the security and/or valuable document, obtained in step B), by means of laser engraving. The invention also relates to a security and/or valuable document that can be produced according to said method.

Abstract: The invention relates to a method for producing a polymer layer composite that comprises a plurality of polymer layers and at least one polymer layer contains a laser-sensitive component, said method consisting of the following steps: A) first personalised information is applied to at least one of the polymer layers by means of an inkjet printing method as a coloured inkjet printed layer, B) the polymer layer with the coloured inkjet printed layer is then joined to the other polymer layers, the polymer layer with the coloured inkjet printed layer being arranged between two other polymer layers, C) second personalised information is inscribed into the polymer layer composite obtained in step B) by means of laser engraving. The invention also relates to a thus obtained polymer layer composite, a security and/or valuable document comprising a polymer layer composite of said type and to a method for producing a security and/or valuable document of said type.