Abstract: The invention more particularly relates to a coextruded, transparent, biaxially oriented polyester film comprising a base layer (B) and a heatsealable top layer (A) which is peelable from at least APET, the heatsealable and peelable top layer (A) consisting of a) 80-98% by weight of polyester and b) 2-10% by weight of inorganic and/or organic particles having an average diameter d50 of from 2.0 to 8.0 ?m (based on the mass of the top layer (A)), wherein c) the polyester being composed of 30-95 mol % of units which derive from at least one aromatic dicarboxylic acid and 5-70 mol % of units which derive from at least one aliphatic dicarboxylic acid, d) the ratio of particle size d50 and layer thickness dA of the top layer (A) being greater than 1.3 and e) the layer thickness of the top layer (A) dA being from 0.5 to 2.5 ?m.

Abstract: The invention relates to an at least two-layer polyester film with a total thickness of from 5 to 200 ?m which comprises, alongside polyethylene terephthalate, from 2 to 20% by weight—based on the weight of the entire film—of polyethylene naphthalate (PEN), where at least one outer layer comprises less than 0.1% by weight of PEN (based on the weight of this outer layer).

Abstract: A process for the preparation of ribavirin on an industrial scale is described which comprises the reaction of glycosylation of 3-substituted triazoles in the presence of a Lewis acid. Said process comprises: a) the reaction of a triazole of the formula ?with a protected ribofuranose of the formula b) the removal of the Pg groups and, optionally, the conversion into a carboxyamide group of the R2 group of the compound obtained of the formula ?DD/mac—01.07.02.

Abstract: A process for the preparation of L-ribavirin on an industrial scale is described which comprises the reaction of glycosylation of 3-substituted triazoles in the presence of a Lewis acid.

Abstract: The invention relates to a single- or multilayer, oriented, film coated with an aminosilane compound and composed of polyester which comprises an additive which, on irradiation with electromagnetic radiation, forms metal nuclei on which further metal can be deposited in further steps of the process. The invention further relates to a process for producing this film and to its use in printed circuit boards, ribbon cables, smart cards, RFID labels, membrane keyboards, and film-based circuits of any type.

Abstract: The invention relates to a method for the production of a.) aldehydes of formula (II): R1—CHO and b.) aldehydes of formula (III): R1—C(O)—R2 by reacting a.) primary alcohols (R1CH2—OH) or b.) secondary alcohols (R1—CH(OH)—R2) with cyclic phosphonic acid anhydrides in the presence of dialkyl-, diaryl- and/or alkyl-aryl sulphonic oxides at a temperature in the region of between ?100 to +120° C., whereby R1 and/or R2 represent H, a substituted linear or branched C1-C12-alkyl radical, a substituted C3-C10 cycloalkyl-, alkenyl-, aryl- or heteroaryl radical. A cyclic phosphonic acid anhydride is used, preferably, as a 2,4,6-substituted 1,3,5,2,4,6-trioxatriphosphinane of formula (I), wherein R? independently represents allyl, aryl or open-chained or branched C1-C12-alkyl-radicals.

Abstract: The invention relates to a hydrolysis-stable polyester whose thickness is preferably in the range from 0.4 to 500 ?m. The film comprises polyester and at least one hydrolysis stabilizer and is distinguished by its low hydrolysis rate. The invention furthermore relates to a process for the production of the film and its use.

Abstract: The invention relates to a white opaque film formed from a crystallizable thermoplastic, preferably thermo-plastic polyester in the form of polyethylene terephthalate, barium sulfate and titanium dioxide as pigments, at least one optical brightener, and optionally at least one dye soluble in the thermoplastic. The film optionally includes, an additional functionality, e.g. in the form of an adhesive coating, of a coating with aminosilane or silicone, of UV resistance, of hydrolysis resistance, of flame retardancy, or of a sealable outer layer.

Abstract: Biaxially oriented polyester films which have a polyester-containing base layer (B) which additionally comprises poly(m-xyleneadipamide) and at least one overlayer (A), and whose average roughness is preferably from 10 to 100 nm and whose gloss is greater than 100, feature improved optical properties and very good barrier properties, especially toward passage of oxygen, and are therefore suitable as packaging materials for foods or other consumable items.

Abstract: The invention relates to a polyester film with a thickness of from about 4 to about 23 ?m, which comprises, alongside polyethylene terephthalate as main constituent, from about 2 to about 20% by weight of polyethylene naphthalate (based on the weight of the film), and has fewer than 30 pinholes per 100 m2. The invention further relates to a process for producing these films, and to the use of the films in packaging composites.

Abstract: The invention relates to a decorative panel comprising a carrier layer and a decorative layer on one or both surfaces of said carrier layer, which decorative layer comprises a synthetic resin layer with a base of one or more radiation-curable components. In addition to that, the present invention relates to a method for manufacturing the decorative panel.

Abstract: The invention relates to an at least two-layer polyester film with a total thickness of from about 5 to about 200 ?m which comprises polyethylene terephthalate and from about 2 to about 20% by weight—based on the weight of the entire film—of polyethylene naphthalate, and also at least one functional outer layer.

Abstract: Invention relates to a process for producing a single-layer or multilayer film by extrusion or coextrusion, biaxial orientation, and heat setting based on crystallizable thermoplastics whose principal constituent is a crystallizable thermoplastic having a standard viscosity SV (DCA) of from 600 to 1000. The thermoplastic is mixed prior to extrusion or coextrusion with 50% by weight (based on the total weight of all thermoplastics) of a secondary thermoplastic having a standard viscosity SV (DCA) of more than 900 to 1500, the standard viscosity SV (DCA) of the two thermoplastics differing by at least 100 units. The secondary thermoplastic is a byproduct or waste product from the production of PET plastic bottles or originates from recycled PET bottles.

Abstract: The invention relates to a hydrolysis-stable polyester film comprising a polyester, whose thickness is preferably in the range from 0.4 to 500 ?m. The film comprises polyester and at least one hydrolysis stabilizer and is distinguished by its low hydrolysis rate. The invention furthermore relates to a process for the production of the film and its use.

Abstract: Coextruded, biaxially oriented polyester films which have a base layer (B) and have a heatsealable outer layer (A) that can be peeled from APET/CPET and from CPET, where the outer layer (A) includes a) from 80 to 98% by weight of polyester and b) from 2 to 10% by weight of inorganic and/or organic particles with a median diameter d50 of from 3 to 12 ?m, and where c) the polyester is composed of from 12 to 89 mol % of units derived from at least one aromatic dicarboxylic acid and of from 11 to 88 mol % of units derived from at least one aliphatic dicarboxylic acid, and d) the ratio calculated from the particle size d50 of the particles and the layer thickness dA of the outer layer (A) is greater than or equal to 1.5, and the shrinkage of the films, at least in one direction, is more than 5%. The films of the invention are especially suitable, owing to their property of self-venting, as a lid film for APET/CPET or CPET trays.

Abstract: A method for preparing aryllithium compounds of the formulae (IV) and (VI) includes reacting halogen compounds (I) with lithium metal to obtain a lithium compound of formula (II) and reacting the lithium compound of formula (II) with aromatic compounds of the formulae (III) and/or (V) to form lithium aromatics (IV) and (VI).

Abstract: Coextruded, biaxially oriented polyester films which have a base layer (B) and have a heatsealable outer layer (A) that can be peeled from APET/CPET and from CPET, where the outer layer (A) comprises from 80 to 99% by weight of polyester and from 1 to 10% by weight of inorganic and/or organic particles with a median diameter d50 of from 2.5 to 12 ?m, and where the polyester is composed of from 12 to 89 mol % of units derived from at least one aromatic dicarboxylic acid and of from 11 to 88 mol % of units derived from at least one aliphatic dicarboxylic acid, and the ratio calculated from the particle size d50 of the particles and the layer thickness dA of the outer layer (A) is ?1, and the base layer (B) comprises poly(-xyleneadipamide). The films of the invention are suitable, owing to their increased oxygen barrier, as a packaging material for foods and other consumable goods or as a lid film for APET/CPET or CPET trays.

Abstract: A process for preparing anilineboronic acid derivative of the formula I, by converting an aniline to a diprotected aniline by introducing two protecting groups, metalating the diprotected aniline with a metalating agent and simultaneously or subsequently reacting with a boronic ester B(OR1,2,3)3 to form a protected anilineboronic ester, which is converted, by detaching the protecting groups, to the anilineboronic esters of the formula (I).

Abstract: Multilayer, biaxially oriented polyester films which include as a constituent of the base layer B, a crystallizable polyester with increased diethylehe glycol content and/or increased polyethylene glycol content, and/or increased isophthalic acid content, preferably polyethylene terephthalate. The outer layers of the inventive films advantageously include at least one IR-reflective pigment and one UV stabilizer. The inventive films advantageously feature adjustable mattness, diffuse scattering power for visible light, high light transmittance, IR reflectance, and good thermoformability, and are suitable for thermally protective coatings or thermally protective packaging.

Abstract: Biaxially oriented polyester films formed from a crystallizable polyester having increased diethylene glycol content and/or increased polyethylene glycol content, and/or increased isophthalic acid content, preferably polyethylene terephthalate. The films of the invention further include at least one IR-reflective pigment and one UV stabilizer. The inventive films feature adjustable mattness, diffuse scattering power for visible light, high light transmittance and IR reflectance and good thermoformability, and are suitable for thermally protective coatings or thermally protective packaging.