摘要:
A layered composite which includes the following layers (I) and (II), wherein layer (I) includes (a) from 0 to 80 part by weight of at least one particular polyamide; (b) from 0 to 100 parts by weight of at least one polyamine-polyamide copolymer; and (c) from 0 to 80 parts by weight of at least one particular polyamide which is different from (a), wherein various monomer units are present in at least 20 parts by weight of the entirety of (a) and (b) and various other monomer units are present in at least 20 parts by weight of the entirety of (b) and (c); and layer (II) includes at least one ethylene-vinyl alcohol copolymer.
摘要:
A layered composite contains the following layers: (I) a layer I composition containing (a) from 0 to 80 parts by weight of at least one polyamide; (b) from 0 to 100 parts by weight of at least one polyamine-polyamide copolymer; and (c) from 0 to 80 parts by weight of at least one polyamide; and (II) a layer II composition containing at least one ethylene-vinyl alcohol copolymer.
摘要:
A molding composition of at least 50% by weight of a polyamine-polyamide copolymer obtained from 0.05 to 2.5% by weight of a polyamine having at least 4 nitrogen atoms and having a viscosity of at least 5 000 Pa•s at 250° C. and at a shear rate of 0.1 l/s, and having a viscosity ratio of at least 7 at 250° C., when the melt viscosities at shear rates of 0.1 l/s and 100 l/s are compared with one another, has high melt stiffness and is easy to cut, and performs well in blow molding.
摘要:
A molding which comprises the following components: (I) from 60 to 96.5 parts by weight of polyamide; (II) from 3 to 39.5 parts by weight of an impact-modifying component which contains anhydride groups, (III) from 0.5 to 20 parts by weight of a copolymer which contains units of the monomers: (a) &agr;-olefin, (b) acrylic compound, and also (c) olefinically unsaturated epoxide, carboxylic anhydride, carboximide, oxazoline or oxazinone, where the total of the parts by weight of components I, II, and III is 100, and where moreover the polyamide has an excess of amino end groups, has improved low-temperature impact strength, even if the molding composition also comprises a plasticizer.
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:
A thermoplastic molding composition comprising 70 to 98 parts of an aromatic polycarbonate having a viscosity number of from 40 to 100 cm.sup.3 /g and 2 to 30 parts of a polyoctenylene or a modified polyoctenylene.
摘要:
Impact-resistant polyester molding compounds, comprising an intimate mixture ofA. 60 to 98% by weight of a polyester andB. 2 to 40% by weight of a polyalkenamer, optionally containing functional groups,which is treated with from about 0.05 to 5% by weight, relative to the sum of components A and B, of an organic radical former at temperature sufficient to cause said radical former to decompose into free radicals are provided.
摘要:
Molding compounds, semi-finished products and finished articles comprising polymeric material which can be inscribed by means of laser light. The products contain an additive which is virtually colorless in the visible spectral range and produces a marking with high color contrast in the visible spectral range under the effect of laser light outside the visible range.
摘要:
Impact-resistant polyamide molding compound consisting of a mixture ofA. 60 to 98% by weight of a polyamide andB. 2 to 40% by weight of a polyalkenamer, wherein the mixture is treated at elevated temperatures with 0.05 to 5% by weight of the sum of components A and B of an organic radical former are provided as well as processes for making them.
摘要:
In a liquid coating composition comprising a small amount of solvent or no solvent, a binder and optionally conventional auxiliary agents, wherein the binder consists essentially of:(A) 45-10% by weight of an aminoplast, the low molecular weight precursors thereof, or mixtures thereof; and(B) 55-90% by weight of an at least difunctional polyester or a mixture of such polyesters; wherein the polyester component B has been produced by the condensation of a conventional alcohol component I with an acid component III, wherein component III consists essentially of a mixture of:III.1 67-92 molar percent of hexahydroterephthalic acid or a lower alkyl ester thereof; andIII.2 8-33 molar percent of an aromatic dicarboxylic acid or a lower alkyl ester derivative thereof;wherein the polyester component B has a molecular weight of 300-1,500 and wherein the binder may be obtained by the cocondensation of aminoplast component A with polyester component B, or by the cocondensation of the starting materials used for the production of aminoplast component A with polyester component B;the improvement wherein component III.2 is terephthalic acid or a lower alkyl ester derivative thereof.