摘要:
The present invention provides a layered composite, which includes the following layers: (I) a layer I composition including: (a) from 0 to 80 part by weight of at least one polyamide selected from the group including PA6, PA66, PA6/66 and mixtures thereof; (b) from 0 to 100 parts by weight of at least one polyamine-polyamide copolymer that includes the following monomer units: (α) from 0.5 to 25% by weight, based on the weight of the polyamine-polyamide copolymer, of at least one polyamine having at least 4 nitrogen atoms and having a number-average molar mass Mn of at least 146 g/mol, and (β) at least one polyamide-forming monomer selected from the group including lactam, ω-aminocarboxylic acid, equimolar combination of diamine and dicarboxylic acid, and mixtures thereof; and (c) from 0 to 80 parts by weight of at least one polyamide selected from the group including PA11, PA12, PA612, PA1012, PA1212 and wherein, in the layer I, a total of the parts by weight of (a), (b) and (c) is 100; wherein within an entirety of (a) and (b), at least 20 parts by weight of the entirety include monomer units selected from the group including caprolactam, combination of hexamethylenediamine/adipic acid, and mixtures thereof; and wherein within an entirety of (b) and (c), at least 20 parts by weight of the entirety include monomer units selected from the group including ω-aminoundecanoic acid, laurolactam, combination of hexamethylenediamine/1,12-dodecanedioic acid, combination of 1,10-decanediamine/1,12-dodecanedioic acid, combination of 1,12-dodecanediamine/1,12-dodecanedioic acid, and mixtures thereof; and (II) a layer II composition which includes at least one ethylene-vinyl alcohol copolymer.
摘要:
The invention relates to a polymer composition which comprises at least one at least semicrystalline polymer having no ionic groups and comprises at least one compound with plasticizing properties, and which comprises having 0.1 to 30% by weight of ionic liquid as plasticizer, and also to the use of this polymer composition, and a process for its preparation.
摘要:
Compositions comprising an organic polymer as the matrix and inorganic particles as the filler and exhibiting in mixture a) 20 to 99.9% by wt. of an organic polymer and b) 0.1 to 80% by wt. of inorganic particles, where the sum of the constituents a) and b) amounts to 100% by wt.; and optionally c) 0 to 100 parts by weight of b) of various additives, in which case the content of the additives c) relates to the sum of a) and b), calculated as 100 parts by weight. characterized in that the composition can be obtained by incorporating particles and optionally other additives into the polymer matrix, in which case the particles to be incorporated i) are aggregates of globular primary particles; ii) the size of the primary particles is in a range of 0.5 nm to less than 100 nm; iii) the volume-weighted median value d50 of the particles is in a range of greater than 0.50 μm to 0.5 μm, determined by means of static light scattering; and iv) the inorganic particles are modified with functional groups, the inorganic particles exhibiting at least three types of functional groups of varying reactivity. The compositions can be prepared in a number of way, for example, by reprecipitation from the dissolved state or by mixing in an extruder and are used for preparing fibers, films and shaped articles with improved mechanical properties.
摘要:
A multilayer film which comprises the following layers: I. an upper layer composed of a polyamide molding composition which is transparent at the selected layer thickness, and II. a lower layer composed of a polyamide molding composition which comprises the following components: a) from 70 to 99% by weight of a polyamide selected from α) polyamides that can be prepared from lactam monomers or from the corresponding ω-aminocarboxylic acids having 6, 7, 8, 9, 10, 11, or 12 carbon atoms, β) polyamides based on diamine and dicarboxylic acids, in each case having from 6 to 18 carbon atoms, γ) polyamide elastomers that can be prepared from oligomeric, difunctional units based on one of the polyamides mentioned under α) and β), and on a difunctional oligoalkylene glycol, δ) copolyamides that can be prepared from the following components: from 50 to 99.9 mol % of a lactam monomer or of the corresponding ω-aminocarboxylic acid having 6, 7, 8, 9, 10, 11, or 12 carbon atoms, or of a substantially equimolar mixture composed of a linear aliphatic diamine and of a linear aliphatic or aromatic dicarboxylic acid in each case having from 6 to 18 carbon atoms, and from 0.1 to 50 mol % of the combination of a diamine and a dicarboxylic acid, where either the diamine or the dicarboxylic acid or both differ from the diamine used, if appropriate, in the other component and, respectively, the dicarboxylic acid used, if appropriate, in the other component, or of another lactam; b) from 1 to 30% by weight of a copolymer which contains units of the following monomers: α) from 20 to 94.5% by weight of one or more α-olefins having from 2 to 12 carbon atoms, β) from 5 to 79.5% by weight of one or more acrylic compounds, γ) from 0 to 50% by weight of an olefinically unsaturated epoxide, carboxylic anhydride, carboximide, oxazoline, or oxazinone has good printability and adhesive-bondability and transparency, and can be used, for example, as an overcoating for skis.
摘要:
A molding composition which comprises the following components: a) a semicrystalline copolyamide and b) an effective amount of a crystallization aid selected from nanoscale fillers and metal salts, metal oxides, or metal hydroxides which can react with the carboxy end groups of the copolyamide, where the copolyamide can be prepared from the following monomer combination: α) from 50 to 99 mol % of a lactam or of a corresponding co-aminocarboxylic acid having 8, 9, 10, 11, or 12 carbon atoms or of a substantially equimolar mixture composed of a diamine and of a dicarboxylic acid, where the diamine has been selected from the group of 1,6-hexamethylenediamine, 1,8-octamethylenediamine, 1,10-decamethylenediamine, and 1,12-dodecamethylenediamine, and the dicarboxylic acid has been selected from the group of sebacic acid and 1,12-dodecanedioic acid, and β) from 1 to 50 mol % of a substantially equimolar mixture composed of a diamine and of a dicarboxylic acid, where either the diamine or the dicarboxylic acid or both differ from the diamine used, if appropriate, under α) and, respectively, the dicarboxylic acid used, if appropriate under α), or of another lactam and, respectively, ω-aminocarboxylic acid, is transparent and has good processability, and gives good results in decoration by means of screen printing.
摘要:
The present invention relates to plastic molded bodies having two-dimensional or three-dimensional image structures produced in the interior through laser subsurface engraving. The plastic molded bodies are made of plastic materials which have a content of nanoscale metal oxides having particle sizes from 1 to 500 nm, both the plastic material and also the included metal oxide being transparent to the laser light used for producing the image structures. The plastic materials from which the molded bodies are manufactured particularly contain metal oxides having particle sizes from 5 to 100 nm at a content of 0.0001 to 0.1 weight-percent. Typical metal oxides are nanoscale indium-tin oxide or antimony-tin oxide.