Abstract:
A polyamide moulding composition with particularly good tensile strain at break consisting of the following constituents: (A) 50 to 100% by weight of at least one transparent polyamide composed of: (a1) 55 to 77 mol % of acyclic, aliphatic diamine having 5-10 carbon atoms; (a2) 23 to 45 mol % of cycloaliphatic diamine having 6-36 C atoms, where the proportions of (a1) and (a2) are based on the entirety of the diamines used; (a3) 40 to 80 mol % of aromatic dicarboxylic acid or a mixture of such dicarboxylic acids; and (a4) 20 to 60 mol % of acyclic, aliphatic dicarboxylic acid having 8 to 16 carbon atoms, or a mixture of such dicarboxylic acids, where the proportions of (a3) and (a4) are based on the entirety of the dicarboxylic acids used; and (B) 0-50% by weight of additives,; where the entirety of components (A) and (B) gives 100% by weight.
Abstract:
The invention relates to copolyamides which are formed from a diamine component, a dicarboxylic acid component and possibly a lactam- and/or ω-amino acid component. Furthermore, the invention relates to a polyamide moulding compound which comprises at least one of these copolyamides. Moulded articles produced from these moulding compounds are used in the automobile field, in the domestic field, in measuring-, regulating- and control technology or in mechanical engineering.
Abstract:
The invention relates to polyamide sheet silicate compositions, containing an untreated clay mineral and a water-soluble polyamide, the concentration of the clay material being greater than 30% by weight. Furthermore the invention relates to nanocomposites which contain clay minerals distributed homogeneously in a water-insoluble thermoplastic matrix. These nanocomposites are produced by mixing the polyamide sheet silicate composition and a water-insoluble thermoplastic in the melt.
Abstract:
The invention relates to a method for storage and for transport of polyamide granulate which comprises at least one amorphous or microcrystalline polyamide. By means of this novel method, yellowing during further processing to form the moulded article can be avoided or at least reduced. Likewise, the invention relates to a corresponding container in which the polyamide granulate is stored. The invention also relates to correspondingly stored or transported polyamide granulate and also moulded articles produced therefrom.
Abstract:
A polyamide moulding composition in particular for use for components in the drinking water sector, made of the following constituents: (A) from 25 to 74.9% by weight of at least one semicrystalline, semiaromatic nylon-6,T/6,I, composed of: (a1) from 65 to 82 mol % of terephthalic acid, based on the entirety of the dicarboxylic acids used; (a2) from 18 to 35 mol % of isophthalic acid, based on the entirety of the dicarboxylic acids used; (a3) 1,6-diaminohexane; (a4) at least one monobasic carboxylic acid; (a5) a phosphorus compound; with the first proviso that the molar ratio of the component (a3) to the entirety of the dicarboxylic acids used ((al) +(a2)) is at least 1.04 and at most 1.15; and with the second proviso that the molar ratio of the component (a4) to the component (a3) is in the range from 0.01 to 0.08; (B) from 25 to 60% by weight of fibrous reinforcing materials; (C) from 0 to 30% by weight of particulate fillers; (D) from 0.1 to 2.0% by weight of heat stabilizers, with the proviso that no copper-containing stabilizers are present therein; (E) from 0 to 2% by weight of carbon black; (F) from 0 to 4% by weight of auxiliaries and/or additives differing from C, D and E; where the entirety of the components (A)-(F) makes up 100% by weight.
Abstract:
A polyamide moulding composition and uses thereof, and mouldings produced therefrom, comprising the following components: (A) semicrystalline semiaromatic polyamide with melting point above 270° C., or a mixture of these polyamides; (B) copolymer of oxyranyl acrylate and/or oxyranyl methacrylate with at least one other olefinically unsaturated monomer, or a mixture of these copolymers; (C) one or more fibrous reinforcing materials; (D) one or more heat stabilizers; where the proportion of (B) is in the range of 1 to 15% by weight, based on 100% by weight composed of the entirety of the components (A) and (B), with the proviso that the polyamide moulding composition is free from grafted impact modifiers.
Abstract:
The present invention relates to heat-aging resistant polyamide molding materials based on partially crystalline, partially aromatic polyamides as well as to moldings manufactured therefrom.
Abstract:
A polyamide moulding compound consisting of the following components (A)-(E): (A) 40-70 wt. % of at least one partially crystalline, partially aromatic polyamide, made up of: (a1) 60 to 75 wt. % of 6T units, formed from 1,6-hexanediamine and terephthalic acid; (a2) 20 to 35 wt. % of 6I units, formed from 1,6-hexanediamine and isophthalic acid; (a3) 3 to 15 wt. % of 612 units, formed from 1,6-hexanediamine and dodecanedioic acid; and (a4) 0 to 5 wt. % of one of the following units: 66 units, formed from 1,6-hexanediamine and adipic acid; 68 units, formed from 1,6-hexane-diamine and suberic acid; 69 units formed from 1,6-hexanediamine and azelaic acid; 610 units formed from 1,6-hexanediamine and sebacic acid; 6 units formed from ε-caprolactam; or a mixture of such units; wherein the sum of the components (a1) to (a4) makes up 100 wt. % of the polyamide (A); (B) 30-60 wt. % of fibrous reinforcing materials; (C) 0-30 wt. % of particulate fillers different from (B), (D) and (E); (D) 0-2.0 wt. % of heat stabilizers; and (E) 0-6 wt. % of auxiliary agents and/or additives, different from (A)-(D); wherein the sum of the components (A)-(E) makes up 100 wt. % is described, as well as corresponding moulded bodies and applications of such moulded bodies in particular as hollow bodies for contact with coolant liquid in the automotive sector.
Abstract:
A polyamide moulding composition in particular for use for components in the drinking water sector, made of the following constituents: (A) from 25 to 74.9% by weight of at least one semicrystalline, semiaromatic nylon-6,T/6,I, composed of: (a1) from 65 to 82 mol % of terephthalic acid, based on the entirety of the dicarboxylic acids used; (a2) from 18 to 35 mol % of isophthalic acid, based on the entirety of the dicarboxylic acids used; (a3) 1,6-diaminohexane; (a4) at least one monobasic carboxylic acid; (a5) a phosphorus compound; with the first proviso that the molar ratio of the component (a3) to the entirety of the dicarboxylic acids used ((a1)+(a2)) is at least 1.04 and at most 1.15; and with the second proviso that the molar ratio of the component (a4) to the component (a3) is in the range from 0.01 to 0.08; (B) from 25 to 60% by weight of fibrous reinforcing materials; (C) from 0 to 30% by weight of particulate fillers; (D) from 0.1 to 2.0% by weight of heat stabilizers, with the proviso that no copper-containing stabilizers are present therein; (E) from 0 to 2% by weight of carbon black; (F) from 0 to 4% by weight of auxiliaries and/or additives differing from C, D and E; where the entirety of the components (A)-(F) makes up 100% by weight.