Polyamide molding materials for hypochlorite-resistant applications

Abstract

To provide the use of polyamide molding materials for producing a molding that is resistant to an aqueous solution comprising hypochlorous acid and / or a salt thereof.SOLUTION: The present invention relates to the use of a polyamide molding material, comprising or consisting of: at least one semi-crystalline polyamide (A); and at least one amorphous or microcrystalline polyamide (B).SELECTED DRAWING: None

Description

Technical Field

[0005] , ,

[0001] The present invention relates to the use of a polyamide molding material for purposes of use where high resistance to hypochlorous acid is important. Therefore, according to the present invention, the molding material is used for a molded article suitable for contact with an aqueous solution containing hypochlorous acid.

Background Art

[0002] EP1291073A1 relates to polyamide microcapsules obtained by bringing an aqueous phase containing a diamine and an anionic polymer and / or a heteropolysaccharide in a dissolved form into contact with an oil phase containing a dissolved dicarboxylic acid halide to form a W / O emulsion, curing with a calcium salt solution, filtering, washing, and drying. The polyamide microcapsules are described as being stable to an alkaline hypochlorite solution and are used for cosmetics.

[0003] EP3502188A1 relates to a polyamide molding material, particularly a polyamide molding material for use in the field of beverages, for producing a molded article in which the processed molding material comes into contact with drinking water according to the intended use. However, nothing is said about resistance to hypochlorite, nor is it mentioned about using a polyamide molding material for a molded article that comes into contact with a solution containing hypochlorite according to the intended use.

[0004] EP0469435A1 discloses copolyamides for producing molded articles having a high glass transition temperature, rigidity, and impact resistance at low hygroscopicity. Further, a method for producing these copolyamides and their use for producing molded articles are disclosed.

Summary of the Invention

Problems to be Solved by the Invention

[0005] Starting from this, the object of the present invention was to find a polyamide molding material suitable for use in which the polyamide molding material is exposed to a solution containing hypochlorite during use. Such use should enable improved stability with respect to applications known in the prior art. Improved stability means the smallest possible weight change when the molding material according to the present invention is stored in a solution containing hypochlorite. Furthermore, the molding material according to the present invention is characterized by improved mechanical stability, particularly with respect to tearing force.

[0006] This objective is achieved by the features of claim 1. Dependent claims refer to advantageous improvements. [Modes for carrying out the invention]

[0007] Definition of Terms Notation and abbreviations for polyamides and their monomers In this invention, the term "polyamide" (abbreviated PA) is understood as a comprehensive term encompassing homopolyamides and copolyamides. The notation and abbreviations chosen for polyamides and their monomers correspond to those specified in ISO standard 1874-1(2011,(D)). The abbreviations used therein are synonymous with the IUPAC names of the monomers, as shown below. In particular, the following abbreviations are used for monomers in this application: MACM: Bis(4-amino-3-methyl-cyclohexyl)methane (also known as 3,3'-dimethyl-4,4'-diaminodicyclohexylmethane: CAS-No. 6864-37-5); TMDC: Bis(4-amino-3,5-dimethylcyclohexyl)methane (also known as 3,3',5,5'-tetramethyl-4,4'-diaminodicyclohexylmethane: CAS No. 65962-45-0); PACM: Bis(4-amino-cyclohexyl)methane (also known as 4,4'-diaminodicyclohexylmethane: CAS No. 1761-71-3); BAC: 1,3-bis(aminomethyl)cyclohexane (also known as 1,3-cyclohexanedimethanamine: CAS No. 2579-20-6); and 1,4-bis(aminomethyl)cyclohexane (also known as 1,4-cyclohexanedimethanamine: CAS No. 2549-93-1); and mixtures thereof; IPD: Isophoronediamine (also known as 3-(aminomethyl)-3,5,5-trimethylcyclohexaneamine, 1-amino-3-aminomethyl-3,5,5-trimethylcyclohexane, or cyclohexanemethaneamine, or 5-amino-1,3,5,5-trimethyl: CAS-No. 2855-13-2); T: Terephthalic acid (CAS No. 100-21-0); I: Isophthalic acid (CAS No. 121-95-5); 36: Dimeric fatty acids having 36 carbon atoms (CAS No. 68783-41-5 or 61788-89-4); 12: Dodecanediic acid (also known as 1,10-decanedicarboxylic acid: CAS No. 693-23-2); CHD: 1,4-Cyclohexanedicarboxylic acid (CAS No. 1076-97-7); 12: Lactam-12 (also known as laurine lactam: CAS No. 947-04-6);

[0008] Amorphous or microcrystalline polyamides Amorphous or microcrystalline polyamides are classified according to ISO 11357- 3 In differential scanning calorimetry (DSC) according to (2013), the heat of fusion is preferably 28 J / g or less, particularly preferably 25 J / g or less, and very preferably 0 to 23 J / g at a heating rate of 20 K / min.

[0009] Microcrystalline polyamides are semicrystalline polyamides and therefore have a melting point. However, they have a form in which the crystallites are of very small size, and a 2 mm thick plate produced from them is still transparent, that is, its light transmittance is at least 80%, preferably at least 85%, and particularly preferably at least 90%, when measured according to ASTM D 1003-13 (2013).

[0010] The microcrystalline polyamide used in the polyamide molding material according to the present invention preferably has a melting point of 255°C or lower, as measured according to ISO 11357-3 (2013).

[0011] Amorphous polyamides have a lower heat of fusion compared to microcrystalline polyamides. Amorphous polyamides are specified in ISO 11357- 3 In differential scanning calorimetry (DSC) according to (2013), at a heating rate of 20 K / min, the heat of fusion is preferably 5 J / g or less, particularly preferably 3 J / g or less, and very preferably 0 to 1 J / g.

[0012] Amorphous polyamides have no melting point due to their amorphous nature.

[0013] Amorphous polyamides are transparent, meaning their light transmittance is at least 80%, preferably at least 85%, and particularly preferably at least 90%, when measured on a 2 mm thick plate according to ASTM D 1003-13 (2013).

[0014] Semicrystalline polyamide In the present invention, semicrystalline polyamide is ISO11357- 3In differential scanning calorimetry (DSC) according to (2013), it is a polyamide that exhibits a heat of fusion of preferably at least 30 J / g, particularly preferably at least 35 J / g, and very preferably at least 40 J / g at a heating rate of 20 K / min. A 2-mm-thick plate made of semi-crystalline polyamide is opaque, that is, its light transmittance is less than 80%, preferably less than 70%, particularly preferably less than 60% when measured according to ASTM D 1003-13 (2013).

[0015] The semi-crystalline polyamide has a melting point.

[0016] dimeric fatty acid In the present invention, the dimer fatty acid has at least 28 carbon atoms (C atoms). They are obtained by dimerization of unsaturated monocarboxylic acids into dicarboxylic acids, and in this case, the dimerization is preferably carried out catalytically. The dimer fatty acid according to the present invention is a dicarboxylic acid. Preferably, the dimer fatty acid is partially saturated, and particularly preferably completely saturated.

[0017] Monomer quantity notation When polyamide (A) or (B) contains only diacid and diamine, their molar ratios are such that the total of all diamines is 50 mol%, the total of all diacids is 50 mol%, and the total ratio of diamine and diacid is 100 mol% with respect to the polyamide.

[0018] When polyamide (A) or (B) contains x mol% of lactam or ω-amino acid in addition to diacid and diamine, with respect to 100 mol% of the polyamide, the total of all diamines is (50 - 0.5x) mol% and the total of all diacids is (50 - 0.5x) mol%.

[0019] In the notation of the amounts of diacid and diamine of the polyamide, always, the total of the molar ratios of all diamines is equal to the total of the molar ratios of all diacids.

[0020] General overview of quantity notation The molding material according to the present invention preferably contains components (A), (B) and optionally (C) and / or (D) and / or (E), where components (A), (B) and optionally (C) and / or (D) and / or (E) total 100% by weight. The defined ranges of the amounts of the individual components (A), (B), (C), (D) and (E) are understood to allow any amount to be selected for each individual component within the specified ranges, provided that the strict requirement that the total of components (A), (B) and optionally (C) and / or (D) and / or (E) is 100% by weight is met.

[0021] Hypochlorous acid, hypochlorite In the present invention, both terms are used as synonyms with respect to aqueous solution or resistance because their aqueous solutions contain both species in equilibrium.

[0022] This equilibrium between hypochlorous acid and hypochlorite depends on the pH value (see Theory of the Formation Rate of Water Disinfection By-products: Dissertation of Tim Schlosser, Heidelberg 2018, pages 36 - 37), and is on the side of hypochlorous acid at pH 6.8. According to DIN 19643 (Water Treatment of Swimming Pools and Baths), from the Hagg (a with umlaut) diagram in the relevant pH range of 6.5 ≦ pH ≦ 7.8 (Figure 2.5, page 37), a composition of approximately 80% hypochlorous acid and approximately 20% hypochlorite can be derived at a pH value of 6.8.

[0023] Solution containing hypochlorite In the present invention, the term "solution containing hypochlorite" includes a solution containing hypochlorite ions in water (e.g., a solution of sodium hypochlorite or hypochlorous acid), and thus also includes a mixture of hypochlorous acid and hypochlorite, where the concentration ratio depends on the pH.

[0024] Sodium hypochlorite - Storage In this invention, the term "hypochlorite-storage" encompasses the storage of test specimens (tensile test specimens) in a solution containing hypochlorite ions in water (for example, a solution of sodium hypochlorite or hypochlorous acid), and therefore also encompasses storage in a mixture of hypochlorous acid and hypochlorite, in which case the concentration ratio depends on the pH.

[0025] The present invention is for producing molded articles that are resistant to aqueous solutions containing hypochlorous acid and / or its salts. At least one semicrystalline polyamide (A); and At least one amorphous or microcrystalline polyamide (B) This relates to the use of polyamide molding materials that include or consist of these materials.

[0026] Resistance means that, after 8064 hours of storage, the weight change of the stored molded article is 12% or less, preferably 11% or less, and particularly preferably 10% or less, as measured according to this specification. and / or, After 8064 hours of storage, the tear strength of the stored molded article, when measured as described herein, shall be at least 70%, preferably at least 73%, and particularly preferably at least 75% of the tear strength of the unstored (pre-storage) test specimen. It means...

[0027] As a result of searching for a suitable polyamide capable of achieving the above objective, it was surprisingly found that the polyamide molding material described in claim 1 has high resistance to solutions containing hypochlorite and is therefore suitable for the purposes of the present invention.

[0028] The use of the present invention preferably enables the production of molded articles that are resistant to aqueous solutions containing hypochlorous acid and / or its salts.

[0029] A preferred embodiment of use according to the present invention is use for manufacturing molded articles selected from the group consisting of: components for transporting and / or storing drinking water or hot water; components in swimming pools, whirlpools, heating systems, or components in sanitary areas (kitchens, bathrooms, saunas, toilets); taps, fittings, housings, mixers, faucets, filter housings, water meters, water meter components (bearings, propeller screws, bases), valves, valve components (housings, shut-off spheres, gate valve sliders, cylinders), distributors, cartridges, pumps, pump components (blade wheels, impellers), inspection glass, covers, lines, or containers, and their components or parts.

[0030] In use according to the present invention, the polyamide molding material may further include at least one inorganic filler (C), and / or optionally at least one additive (D), and / or optionally at least one further polymer (E), wherein polymer (E) is different from both polyamide (A) and polyamide (B), and different from additive (D).

[0031] In a particularly preferred embodiment of the use of the present invention, the polyamide molding material has the following composition: At least one semicrystalline polyamide (A) in an amount of 19-95% by weight, preferably 25-89.39% by weight, and particularly preferably 21-67.9% by weight; 5-60% by weight, preferably 10-50% by weight, and particularly preferably 15-30% by weight, of at least one amorphous or microcrystalline polyamide (B); At least one inorganic filler (C) in an amount of 0-70% by weight, preferably 0.1-60% by weight, and particularly preferably 15-50% by weight; At least one additive (D) in an amount of 0-6% by weight, preferably 0.01-5% by weight, and particularly preferably 0.1-4% by weight; and At least one polymer (E) in an amount of 0-20% by weight, preferably 0.5-15% by weight, and particularly preferably 2-10% by weight; Here, components (A) to (E) total 100% by weight.

[0032] In further use of the present invention, the polyamide molding material may further comprise at least one inorganic filler (C) and / or optionally at least one additive (D).

[0033] In a more particularly preferred embodiment of the use of the present invention, the polyamide molding material has the following composition: At least one semicrystalline polyamide (A) in an amount of 19-95% by weight, preferably 25-89.89% by weight, and particularly preferably 31-69.9% by weight; 5-60% by weight, preferably 10-50% by weight, and particularly preferably 15-30% by weight, of at least one amorphous or microcrystalline polyamide (B); At least one inorganic filler (C) in an amount of 0-70% by weight, preferably 0.1-60% by weight, and particularly preferably 15-50% by weight; and At least one additive (D) in an amount of 0-6% by weight, preferably 0.01-5% by weight, and particularly preferably 0.1-4% by weight; Here, components (A) to (D) total 100% by weight.

[0034] Components (A) to (E) are explained in more detail below.

[0035] Ingredient (A) According to a preferred embodiment of the present invention, the at least one semicrystalline polyamide (A) is ISO11 35 When measured according to 7-3 (2013), the melting point is 120-350°C, preferably 175-330°C, particularly preferably 280-325°C, and / or ISO11 35 When measured according to 7-3(2013), the heat of fusion is at least 30 J / g, particularly preferably at least 35 J / g, very preferably at least 40 J / g, and / or According to ASTM D 1003-13 (2013), when measured on a 2 mm thick plate, the light transmittance is less than 80%, preferably less than 70%, and particularly preferably less than 60%. It holds.

[0036] According to a more preferred embodiment of the present invention, the at least one semicrystalline polyamide (A) is formed from monomers (a1), (a2), and optionally (a3): (a1) At least one diamine selected from the group consisting of 1,4-butanediamine, 1,5-pentanediamine, 1,6-hexanediamine, 1,8-octanediamine, 1,9-nonanediamine, 1,10-decanediamine, 1,12-dodecanediamine, 2-methyl-1,5-pentanediamine, 2-methyl-1,8-octanediamine, bis(4-aminocyclohexyl)methane, bis(aminomethyl)cyclohexane, isophoronediamine, and m-xylylenediamine; and (a2) At least one dicarboxylic acid selected from the group consisting of 1,6-hexanedioic acid, 1,9-nonanedioic acid, 1,10-decanedioic acid, 1,12-dodecanedioic acid, 1,13-tridecanedioic acid, 1,14-tetradecanedioic acid, 1,15-pentadecanedioic acid, 1,16-hexadecanedioic acid, 1,17-heptadecanedioic acid, 1,18-octadecanedioic acid, cyclohexanedicarboxylic acid, dimeric fatty acids having 36 or 44 carbon atoms, isophthalic acid, and terephthalic acid; and / or (a3) One or more lactams or ω-amino acids selected from the group consisting of lactam-6, lactam-11, lactam-12, 1,6-aminohexanoic acid, 1,11-aminoundecanoic acid, and 1,12-aminododecanoic acid.

[0037] According to a particularly preferred embodiment of the present invention, the at least one semicrystalline polyamide (A) is selected from the group consisting of: PA 6, PA 46, PA 49, PA 410, PA 411, PA 412, PA 413, PA 414, PA 415, PA 416, PA 417, PA 418, PA 436, PA 56, PA 510, PA 66, PA 69, PA 610, PA 611, PA 612, PA 613, PA 614, PA 615, PA 616, PA 617, PA 618, PA 1010, PA 66 / 6, PA 6 / 66 / 610, PA 6 / 66 / 12, PA 6 / 12, PA 11, PA 12, PA 912, PA 1212, PA MXD6, PA MXD9, PA MXD10, PA MXD11, PA MXD12, PA MXD13, PA MXD14, PA MXD15, PA MXD16, PA MXD17, PA MXD18, PA MXD36, PA MXD6 / MXDI, polyamide with 4T repeating units, polyamide with 5T repeating units, polyamide with 6T repeating units, polyamide with 8T repeating units, polyamide with 9T repeating units, polyamide with 10T repeating units, polyamide with 12T repeating units, PA 4T / 6T, PA 4T / 8T, PA 6T / 8T, PA 4T / MPMDT, PA 4T / 4I, PA 5T / 5I, PA 6T / 6I, PA 9T / MODT, PA 9T / 9I, PA 10T, PA 10T / 6T, PA 10T / 6T / 10I / 6I, PA 12T, PA MPMDT / 6T, PA 10T / 10I, PA 12T / 12I, PA 4T / 6T / 8T, PA 4T / 6T / 10T, PA 4T / 8T / 10T, PA 6T / 8T / 10T, PA 4T / 6T / MPMDT, PA 6T / 6, PA 6T / 66, PA 4T / 66, PA 5T / 66, PA 6T / 6I / 6, PA 10T / 6T / 1012 / 612, PA 6T / BACT, PA 6I / 6T / BACI / BACT, PA 66 / BAC6 / MACM6, PA 66 / BAC6 / PACM6, PA 66 / BAC6 / IPD6, and mixtures or copolymers thereof; Preferably, PA 6, PA 66, PA 69, PA 610, PA 612, PA 616, PA 1010, PA 66 / 6, PA 6 / 12, PA 11, PA 12, PA 1212, PA MXD6, PA MXD10, PA 6T / 6I, PA 9T / MODT, PA 10T, PA 10T / 6T, PA 10T / 6T / 10I / 6I, PA 12T, PA 10T / 10I, PA 6T / 6, PA 6T / 66, PA 10T / 6T / 1012 / 612, PA 6T / BACT, PA 6I / 6T / BACI / BACT, PA 66 / BAC6 / MACM6, PA 66 / BAC6 / PACM6, PA 66 / BAC6 / IPD6; Particularly preferred, PA 6, PA 66, PA 610, PA 612, PA 616, PA 1010, PA 66 / 6, PA 6 / 12, PA 12, PA 6T / 6I, PA 10T, PA 10T / 6T, PA 10T / 6T / 10I / 6I, PA 10T / 10I, PA 6T / 6, PA 6T / 66, PA 6T / 6I / 6, PA 10T / 6T / 1012 / 612, PA 6T / BACT, PA 6I / 6T / BACI / BACT, PA 66 / BAC6 / MACM6.

[0038] The relative viscosity of the semicrystalline polyamide (A) is preferably 1.40 to 2.50, particularly preferably 1.45 to 2.30, and very preferably 1.60 to 2.15, when measured at 20°C in a solution containing 0.5 g of polyamide in 100 mL of m-cresol, according to ISO 307 (2013).

[0039] Ingredient (B) According to a preferred embodiment of the present invention, the at least one amorphous or semicrystalline polyamide (B) is ISO11 35 Heat of fusion of 28 J / g or less, particularly preferably 25 J / g or less, and very preferably 0 to 23 J / g or less, as measured according to 7-3 (2013); and / or According to ASTM D 1003-13 (2013), when measured on a 2 mm thick plate, the light transmittance is at least 80%, preferably at least 85%, and particularly preferably at least 90%; and / or ISO11 35 When measured according to 7-2 (2013), the glass transition temperature is 60-240°C, preferably 80-230°C, and particularly preferably 105-210°C. This indicates.

[0040] According to a more preferred embodiment of the present invention, the at least one amorphous or microcrystalline polyamide (B) is formed from monomers (b1), (b2), and optionally (b3): (b1) At least one diamine selected from the group consisting of 1,6-hexanediamine, 1,10-decanediamine, 1,12-dodecanediamine, 2-methyl-1,5-pentanediamine, m-xylylenediamine, bis(4-amino-3-methylcyclohexyl)methane, bis(4-aminocyclohexyl)methane, bis(4-amino-3,5-dimethylcyclohexyl)methane, bis(aminomethyl)cyclohexane, ND(2,2,4-trimethylhexamethylenediamine), and IND(2,4,4-trimethylhexamethylenediamine); and (b2) At least one dicarboxylic acid selected from the group consisting of 1,6-hexanedioic acid, 1,10-decanedioic acid, 1,12-dodecanedioic acid, 1,14-tetradecanedioic acid, 1,16-hexadecanedioic acid, 1,18-octadecanedioic acid, dimeric fatty acids having 36 or 44 carbon atoms, cyclohexanedicarboxylic acid, isophthalic acid, terephthalic acid, and naphthalenedicarboxylic acid; and / or (b3) One or more lactams or ω-amino acids selected from the group consisting of lactam-6, lactam-11, lactam-12, 1,6-aminohexanoic acid, 1,11-aminoundecanoic acid, and 1,12-aminododecanoic acid.

[0041] Attached to the base of the snowflake with a 1-minute smooth scent Material Propellant (B) is one of the following types:PA 6I、PA 6I / 6T、PA 10I / 10T、PA MPMDI / MPMDT、PA 6I / 6T / 6N、PA MXDI / 6I、PA MXDI / MXDT / 6I / 6T、PA MXDI / 12I、PA MXDI、PA MXDI / MXD6、PA MACM10, PA MACM12, PA MACM14, PA MACM16, PA MACM18, PA NDT / INDT, PA TMDC10, PA TMDC12, PA TMDC14, PA TMDC16, PA TMDC18, PA PACM12, PA PACM14, PA PACM16, PA PACM18, PA PACM10 / 11, PA PACM10 / 12, PA PACM12 / 612, PA PACM12 / PACM14 / 612 / 614, PA MACMI / 12, PA MACMT / 12, PA MACMI / MACM12, PA MACMI / MACMN, PA MACMT / MACM12, PA MACMT / MACMN, PA MACM36, PA TMDC36, PA MACMI / MACM36, PA 6I / MACMI / 12, PA MACMT / MACM36, PA MACMI / MACMT / MACM36, PA MACMI / MACMT / 12, PA 6I / 6T / MACMI / MACMT、PA 6I / 6T / MACMI / MACMT / 12、PA MACM6 / 11、PA MACM6 / 12、PA MACM10 / 11、PA MACM10 / 12、PA MACM10 / 1010、PA MACM12 / 1012、PA MACM12 / 1212, PA MACM14 / 1014, PA MACM14 / 1214, PA MACM16 / 1016, PA MACM18 / 1018, PA 6I / 6T / MACMI / MACMT / MACM12 / 612, PA 6I / 6T / MACMI / MACMT / MACM12, PA MACMI / MACMT / MACM12 / 12 PA MACMI / MACMT / MACM12 PA 6I / 6T / MACMI / MACMT / 12 PA 6I / 6T / 6N / MACMI / MACMT / MACMN PA TMDC12 / TMDCT / TMDC36 PA TMDC12 / TMDCI PATMDC12 / TMDCI / TMDC36, PA TMDC12 / TMDCT, PA 6I / 6T / BACI / BACT, PA MACMI / MACMT / BACI / BACT, PA 6I / 6T / MACMI / MACMT / BACI / BACT, PA MACMI / MACMT / MACM12 / MACM36, PA MACMI / MACMT / MACM14 / MACM36, PA MACMI / MACMT / MACMCHD / MACM36, PA TMDCI / TMDCT / TMDC12 / TMDC36, PA TMDCI / TMDCT / TMDC14 / TMDC36, PA TMDCI / TMDCT / TMDCCHD / TMDC36, and mixtures or copolymers thereof; Here, MACM may be substituted with PACM and / or TMDC up to a maximum of 35 mol% of the total molar proportion of all monomers, and / or Laurin lactam may be completely or partially replaced with caprolactam, and / or A dimeric fatty acid having 36 carbon atoms may be completely or partially substituted with a dimeric fatty acid having 44 carbon atoms. Preferably, PA 6I / 6T, PA 10I / 10T, PA MPMDI / MPMDT, PA MXDI / 6I, PA MXDI / MXDT / 6I / 6T, PA MACM10, PA MACM12, PA MACM14, PA MACM16, PA MACM18, PA NDT / INDT, PA TMDC10, PA TMDC12, PA TMDC14, PA TMDC16, PA TMDC18, PA PACM12, PA PACM14, PA PACM16, PA PACM18, PA PACM10 / 11, PA PACM10 / 12, PA PACM12 / 612, PA PACM12 / PACM14 / 612 / 614, PA MACMI / 12, PA MACMT / 12, PA MACMI / MACM12, PA 6I / MACMI / 12, PA MACMI / MACMT / 12, PA 6I / 6T / MACMI / MACMT, PA 6I / 6T / MACMI / MACMT / 12, PA MACM10 / 1010, PA MACM14 / 1014, PA 6I / 6T / MACMI / MACMT / MACM12 / 612, PA MACMI / MACMT / MACM12, PA 6I / 6T / MACMI / MACMT / 12, PA TMDC12 / TMDCI, PA TMDC12 / TMDCI / TMDC36, PA 6I / 6T / BACI / BACT, PA 6I / 6T / MACMI / MACMT / BACI / BACT, PA MACMI / MACMT / MACM12 / MACM36, PA MACMI / MACMT / MACM14 / MACM36, PA MACMI / MACMT / MACMCHD / MACM36, PA TMDCI / TMDCT / TMDC12 / TMDC36, PA TMDCI / TMDCT / TMDC14 / TMDC36, PA TMDCI / TMDCT / TMDCCHD / TMDC36, and mixtures or copolymers thereof; Here, MACM may be substituted with PACM and / or TMDC up to a maximum of 35 mol% of the total molar proportion of all monomers, and / or Laurin lactam may be completely or partially replaced with caprolactam, and / or A dimeric fatty acid having 36 carbon atoms may be completely or partially substituted with a dimeric fatty acid having 44 carbon atoms. Particularly preferred, PA 6I / 6T, PA 10I / 10T, PA MXDI / 6I, PA MACM10, PA MACM12, PA MACM14, PA MACM16, PA MACM18, PA TMDC10, PA TMDC12, PA TMDC14, PA TMDC16, PA TMDC18, PA PACM12, PA PACM14, PA PACM16, PA PACM18, PA PACM10 / 11, PA PACM10 / 12, PA PACM12 / 612, PA PACM12 / PACM14 / 612 / 614, PA MACMI / 12, PA MACMT / 12, PA MACMI / MACM12, PA 6I / MACMI / 12, PA MACMI / MACMT / 12, PA 6I / 6T / MACMI / MACMT / MACM12 / 612, PA MACMI / MACMT / MACM12, PA 6I / 6T / MACMI / MACMT / 12, PA TMDC12 / TMDCI, PA TMDC12 / TMDCI / TMDC36, PA MACMI / MACMT / MACM12 / MACM36, PA MACMI / MACMT / MACM14 / MACM36, PA TMDCI / TMDCT / TMDC12 / TMDC36, PA TMDCI / TMDCT / TMDC14 / TMDC36, and mixtures or copolymers thereof; Here, MACM may be substituted with PACM and / or TMDC up to a maximum of 35 mol% of the total molar proportion of all monomers, and / or Laurin lactam may be completely or partially replaced with caprolactam, and / or A dimeric fatty acid having 36 carbon atoms may be completely or partially substituted with a dimeric fatty acid having 44 carbon atoms.

[0042] In amorphous polyamides PA 6I / 6T and PA 10I / 10T, the proportion of isophthalic acid is preferably 53-90 mol%, and particularly preferably 55-80 mol%. Very preferably, the molar ratio of isophthalic acid to terephthalic acid is 65:35-70:30.

[0043] In amorphous PA MXDI / 6I, the proportion of 1,6-hexanediamine is preferably 15-40 mol%, particularly preferably 20-35 mol%, and in this case, the total molar proportion of all monomers is 100 mol%. In particular, it is preferable that PA MXDI / 6I has a molar ratio of 46 / 54.

[0044] In PA PACM12 / 612, the proportion of 1,6-hexanediamine is preferably 2 to 24 mol%, and particularly preferably 6 to 15 mol%, in which case the total molar proportion of all monomers is 100 mol%. Polyamide PA PACM12 / 612 containing up to 24 mol% of 1,6-hexanediamine is microcrystalline.

[0045] In PA PACM12 / PACM14 / 612 / 614, the proportion of 1,6-hexanediamine is preferably 2 to 24 mol%, particularly preferably 6 to 15 mol%, and / or the proportion of 1,14-tetradecanedioic acid is 2 to 24 mol%, preferably 6 to 15 mol%, in which case the total molar proportion of all monomers is 100 mol%. Polyamide PA PACM12 / PACM14 / 612 / 614 containing up to 24 mol% of 1,6-hexanediamine is microcrystalline.

[0046] In amorphous PA MACMI / 12, the proportion of laurin lactam is preferably 15-50 mol%, particularly preferably 20-40 mol%, and very preferably 19 mol% or 35 mol%, in which case the total molar proportion of all monomers is 100 mol%.

[0047] In amorphous PA MACMI / MACMT / 12, the proportion of isophthalic acid is preferably the same as the proportion of terephthalic acid, and / or the proportion of laurin lactam is preferably 15-40 mol%, particularly preferably 20-30 mol%, and very preferably the molar ratio of repeating units MACMI / MACMT / 12 is 38 / 38 / 24, in which case the total molar proportion of all monomers is 100 mol%.

[0048] In amorphous PA MACMI / MACMT / MACM12, the proportion of isophthalic acid is preferably the same as the proportion of terephthalic acid, and / or the proportion of dodecanediic acid is preferably 30-60 mol%, particularly preferably 40-50 mol%, and very preferably the molar ratio of repeating units MACMI / MACMT / MACM12 is 27 / 27 / 46, in which case the total molar proportion of all monomers is 100 mol%.

[0049] In amorphous PA 6I / 6T / MACMI / MACMT / 12, the proportion of isophthalic acid is preferably the same as the proportion of terephthalic acid, and / or the proportion of laurin lactam is preferably 1 to 25 mol%, particularly preferably 2 to 15 mol%, and very preferably the molar ratio of repeating units 6I / 6T / MACMI / MACMT / 12 is 34 / 34 / 14 / 14 / 4, or 39 / 39 / 9.6 / 9.6 / 2.8, in which case the total molar proportion of all monomers is 100 mol%.

[0050] In the polyamides PA MACM10 / PACM10, PA MACM12 / PACM12, PA MACM14 / PACM14, PA MACM16 / PACM16, and PA MACM18 / PACM18, the proportion of PACM is preferably 1 to 35 mol%, particularly preferably 2 to 25 mol%, in which case the total molar proportion of all monomers is 100 mol%. The polyamides PA MACM10 / PACM10, PA MACM12 / PACM12, or PA MACM14 / PACM14, PA MACM16 / PACM16, and PA MACM18 / PACM18 (containing up to 25 mol% PACM) are amorphous.

[0051] In amorphous PA 6I / 6T / MACMI / MACMT / PACMI / PACMT / 12, the proportion of isophthalic acid is preferably the same as the proportion of terephthalic acid, and / or the proportion of laurin lactam is preferably 2 to 15 mol%, particularly preferably 2 to 7 mol%, and / or the proportion of PACM is preferably 2 to 7 mol%, in which case the total molar proportion of all monomers is 100 mol%.

[0052] In amorphous polyamides PA MACMI / MACMT / MACM12 / MACM36 and PA MACMI / MACMT / MACM14 / MACM36, the molar proportion of isophthalic acid is preferably at least the same as the molar proportion of terephthalic acid (i.e., the same as or greater than the molar proportion of terephthalic acid), the proportion of isophthalic acid is preferably 6 to 49.55 mol%, particularly preferably 7 to 43.5 mol%, very preferably 11.5 to 27 mol%, and / or the proportion of terephthalic acid is preferably 0.1 to 24.775 mol%, particularly preferably 0.5 The proportion of 1,12-dodecanediol or 1,14-tetradecanediol is preferably 0.1 to 37.75 mol%, particularly preferably 5 to 35 mol%, and very preferably 10 to 25.5 mol%, and / or the proportion of dimeric fatty acids having 36 carbon atoms is preferably 0.25 to 10 mol%, particularly preferably 1 to 7.5 mol%, and very preferably 1.5 to 4.4 mol%.

[0053] In amorphous polyamides PA TMDCI / TMDCT / TMDC12 / TMDC36 and PA TMDCI / TMDCT / TMDC14 / TMDC36, the molar proportion of isophthalic acid is preferably at least the same as the molar proportion of terephthalic acid, the proportion of isophthalic acid is preferably 6 to 49.55 mol%, particularly preferably 7 to 43.5 mol%, very preferably 11.5 to 27 mol%, and / or the proportion of terephthalic acid is preferably 0.1 to 24.775 mol%, particularly preferably 0.5 to 22 mol%, very preferably The proportion of 1,12-dodecanediol or 1,14-tetradecanediol is preferably 0.1 to 37.75 mol%, particularly preferably 5 to 35 mol%, and very preferably 10 to 25.5 mol%, and / or the proportion of dimeric fatty acids having 36 carbon atoms is preferably 0.25 to 10 mol%, particularly preferably 1 to 7.5 mol%, and very preferably 1.5 to 4.4 mol%.

[0054] According to ISO 307 (2013), the relative viscosity of amorphous or microcrystalline polyamide (B), measured at 20°C in a solution containing 0.5 g of polyamide in 100 mL of m-cresol, is preferably 1.35 to 2.15, particularly preferably 1.40 to 2.00, and very preferably 1.45 to 1.90.

[0055] Ingredients (C) The term "filler (C)" includes fibrous or needle-shaped fillers, particulate fillers, and mixtures thereof.

[0056] The fillers may preferably be coated or surface-treated; that is, they may be treated with a suitable sizing system or adhesive (adhesion promoter) system, or otherwise surface-activated. For this purpose, for example, systems based on urethane, silane, epoxide (epoxy), polyamide, polyhydroxy ether, acrylate, or combinations thereof may be used. The sizing system or adhesive (adhesion promoter) system may include other additives such as antistatic agents or release agents (lubricants).

[0057] The fibrous or needle-shaped filler is preferably selected from the group consisting of glass fibers, carbon fibers, basalt fibers, boron fibers, slag fibers, metal fibers, whiskers, mineral fibers, wollastonite, aramid fibers, crushed glass fibers, crushed carbon fibers, crushed mineral fibers, and mixtures thereof. Particularly preferably, the fibrous or needle-shaped filler is selected from the group consisting of glass fibers, carbon fibers, basalt fibers, boron fibers, aramid fibers, and mixtures thereof. Very preferably, only glass fibers are used as the fibrous or needle-shaped filler.

[0058] In the case of glass fibers or carbon fibers, staple fibers or long fibers (roving) can be used.

[0059] The glass or carbon fibers may have circular, oval, elliptical, constricted elliptical (so-called cocoon fiber), angular, or rectangular cross-sections. Fibers with non-circular cross-sections, particularly oval, elliptical, constricted elliptical (so-called cocoon fiber), angular, or rectangular fibers, are also called flat fibers. Mixtures of circular and non-circular fibers may also be used.

[0060] The appearance of the glass fibers may be stretched or spiral.

[0061] Glass fibers consisting of all types of glass (e.g., A-, C-, D-, E-, E-CR-, L-, LD-, M-, NE-, S-, R-, AR- glass, or any mixture thereof) can be used. Glass fibers consisting of E- glass, S- glass, or a mixture of E- and / or S- glass fibers are preferred.

[0062] The staple glass fibers have a fiber length of 1 to 50 mm, particularly 1 to 25 mm, preferably 1.5 to 20 mm, especially preferably 2 to 12 mm, and very preferably 2 to 8 mm.

[0063] The glass fibers preferably have a diameter of 5 to 20 μm, more preferably 5 to 15 μm, and particularly preferably 6 to 12 μm.

[0064] In the pultrusion method, when glass fibers are used as long fibers (rovings), they preferably have a diameter of 20 μm or less, preferably 18 μm or less, and particularly preferably 10 to 17 μm.

[0065] The carbon fibers preferably have a diameter of 3 to 12 μm, preferably 4 to 10 μm, and particularly preferably 4 to 9 μm.

[0066] In the case of flattened fibers, the aspect ratio, i.e., the ratio of the main cross-sectional axis to the secondary cross-sectional axis, is 1.5 to 8, preferably 2 to 6, particularly preferably 2.5 to 5, and very preferably 3 to 4. Among flattened fibers, flattened glass fibers are particularly preferred. The cross-sectional axis of flattened glass fibers is 3 to 40 μm long. Preferably, the length of the secondary cross-sectional axis is 3 to 20 μm, particularly preferably 4 to 10 μm, and the length of the main cross-sectional axis is 6 to 40 μm, particularly preferably 12 to 30 μm.

[0067] The particulate filler is preferably selected from the group consisting of dolomite, silicates, quartz, talcum (talc), mica, kaolin, perlite, silica, precipitated or calcined silicon dioxide, diatomaceous earth, titanium dioxide, magnesium carbonate, magnesium hydroxide, aluminum hydroxide, heavy or precipitated calcium carbonate, chalk, lime, limestone dust, slate powder, feldspar, barium carbonate, barium sulfate, synthetic layered silicates, natural layered silicates, permanently magnetic or magnetizable metals or alloys, glass flakes, glass spheres, hollow glass spheres, hollow spherical silicate fillers, and mixtures thereof. Particulate fillers are particularly preferably selected from the group consisting of silicates, quartz, talcum (talc), mica, kaolin, perlite, silica, precipitated or calcined silicon dioxide, diatomaceous earth, titanium dioxide, magnesium carbonate, magnesium hydroxide, aluminum hydroxide, heavy or precipitated calcium carbonate, chalk, lime, limestone dust, slate powder, feldspar, barium carbonate, barium sulfate, synthetic layered silicates, natural layered silicates, glass flakes, glass spheres, hollow glass spheres, hollow spherical silicate fillers, and mixtures thereof. Particulate fillers are very preferably selected from the group consisting of silicates, talcum (talc), mica, kaolin, titanium dioxide, heavy or precipitated calcium carbonate, chalk, limestone dust, slate powder, synthetic layered silicates, natural layered silicates, glass flakes, glass spheres, hollow glass spheres, and mixtures thereof.

[0068] Preferably, in the polyamide molding material according to the present invention, at least one fibrous or needle-shaped filler, or a mixture of at least one fibrous or needle-shaped filler and at least one particulate filler, is used as the filler (component C).

[0069] When a mixture of at least one fibrous or needle-shaped filler and at least one particulate filler is used, the proportion of the particulate filler is half or less of the total amount of the filler, preferably 1 / 3 or less, and particularly preferably 1 / 4 or less.

[0070] In the polyamide molding material according to the present invention, it is particularly preferable to use only fibrous or needle-shaped fillers as the filler.

[0071] Ingredients (D) According to a preferred embodiment of the present invention, the at least one additive (D) is selected from the group consisting of inorganic stabilizers and organic stabilizers, particularly antioxidants, ozone degradation inhibitors, light stabilizers, particularly UV stabilizers, UV absorbers, or UV blockers, release agents (lubricants), dyes, marking agents (tracers), pigments, carbon black, graphite, graphene, carbon nanotubes, photochromic agents, antistatic agents, release substances, antiblocking agents, chain extenders, chain shortening agents, fluorescent whitening agents, IR absorbers, NIR absorbers, and mixtures thereof.

[0072] In the case of organic stabilizers, phenol compounds, phosphite compounds, phosphonite compounds, hindered amine stabilizers (HALS), or mixtures thereof are particularly preferred.

[0073] The at least one of the aforementioned additives may be added in the form of a masterbatch. Preferably, a polyamide is used as the base polymer of the masterbatch. This polyamide is preferably selected from the group consisting of PA 12, PA 1010, PA 1012, PA 1212, PA 6 / 12, PA 612, PA MACM12 and mixtures thereof, or from the group consisting of polyamide (A) and / or polyamide (B) itself.

[0074] More preferably, the base polymer of the masterbatch is the polyamide (A) or polyamide (B) itself.

[0075] The present invention will be described in more detail with reference to the embodiments and experiments shown below, but the present invention is not limited to the specific embodiments shown therein.

[0076] Ingredient (E) According to a preferred embodiment of the present invention, the at least one further polymer (E) is selected from the group consisting of polymers different from those described above, impact modifiers, and mixtures thereof. Particularly preferably, the at least one further polymer (E) is selected from the group consisting of impact modifiers and mixtures thereof.

[0077] [Measurement method] Relative viscosity Relative viscosity was measured at 20°C according to ISO 307 (2007). For this purpose, 0.5 g of polymer pellets were weighed into 100 mL of m-cresol, and the relative viscosity (RV) was calculated using the formula RV = t / t0, based on Chapter 11 of the standard.

[0078] Glass transition temperature (Tg) and melting point Pellets with a moisture content of less than 0.1% by weight were measured according to ISO 11357-2 and -3 (2013). Differential scanning calorimetry (DSC) was performed during each of the two heating cycles at a heating rate of 20 K / min. After the first heating, the sample was rapidly cooled in dry ice. The melting point was measured during the second heating cycle.

[0079] The temperature at which the peak value is maximized is defined as the melting point. The center of the glass transition zone, defined as the glass transition temperature (Tg), is determined using the "half height method".

[0080] Weight change Weight changes were measured on stored ISO tensile test specimens. The weight change of tensile test specimens stored in an aqueous hypochlorite solution was subtracted from the weight change of tensile test specimens stored in water alone. This eliminated the weight increase due to water absorption that similarly occurs when stored in an aqueous hypochlorite solution.

[0081] Tear force Tear strength was measured using ISO tensile test specimens (manufactured according to standard ISO / CD3167(2003): Type A1, dimensions 170×20 / 10×4) stored in an aqueous solution of hypochlorite.

[0082] Measurements were performed at 23°C in accordance with ISO 527 (2012) for tear strength, using a tensile speed of 50 mm / min for unreinforced materials and 5 mm / min for reinforced materials. Absolute force was used directly as the measured value (i.e., without cleaving the specimen in cross-section).

[0083] light transmittance Light transmittance was determined according to ASTM D 1003-13 (2013) at 23°C using a 2mm thick, 60×60mm plate (width × length), and by the film gate of Byk Gardner's "Haze Gard plus" using a CIE light source C. The light transmittance value is expressed as a percentage of the amount of light irradiated.

[0084] Storage conditions Sampling was performed for both storage types at the same time points, specifically at 1344 hours, 4032 hours, 5376 hours, 6720 hours, and 8064 hours, respectively. For each material and storage time, five ISO tensile test specimens (Type A1, dimensions 170 × 20 / 10 × 4, manufactured according to standard ISO / CD3167 (2003)) were stored, and the arithmetic mean of the five measurements was calculated.

[0085] Storage in water was performed in deionized water, with the temperature controlled at 60°C using a thermostat.

[0086] The storage of hypochlorite was carried out in a 100L sodium hypochlorite aqueous solution in a HyperDES-watertechnology (Crylesheim, Germany) test stand, with a thermostat adjusted to 60°C. The sodium hypochlorite solution was circulated at a rate of 6-8 L / min, while maintaining a pH of 6.8 and a conductivity of 600-1200 μS. The concentration of sodium hypochlorite, its pH, and conductivity were automatically adjusted throughout the storage period by adding 0.5 wt% sodium hypochlorite solution, 0.7 wt% sodium hydroxide solution, 0.7 wt% sulfuric acid, or deionized water. The pH value and sodium hypochlorite concentration were further checked once a week using a CHEMATEST 20s (available from Swan Analytische Instrumente, Hinwiel, Switzerland) by a colorimetric method using N,N-diethyl-1,4-phenylenediamine in accordance with DIN EN ISO 7393-2 (2012).

[0087] Manufacturing of test specimens To prepare the test specimens, pellets with a moisture content of less than 0.1% by weight were used.

[0088] ISO tensile test specimens were manufactured using an Arburg injection molding machine, model Allrounder 420 C 1000-250. The cylinder temperature, which rises and falls from the feed port to the nozzle, was used during the process.

[0089] Example 1 and Comparative Example 2 Cylinder temperature: 310 / 315 / 320 / 325 / 330 / 325℃ Mold temperature: 120℃ Examples 3, 4, and Comparative Example 5 Cylinder temperature: 320 / 325 / 330 / 335 / 340 / 330℃ Mold temperature: 140℃ Examples 6, 7, 8 Cylinder temperature: 290 / 295 / 300 / 305 / 310 / 300℃ Mold temperature: 80℃

[0090] Unless otherwise specified, the test specimens were used in a dry state; for this purpose, after injection molding, they were stored at room temperature for at least 48 hours in a dry environment (i.e., on silica gel).

[0091] [Table 1]

[0092] [Table 2]

[0093] [Table 3]

[0094] As is evident from the experiments, surprisingly, only polyamide molding materials containing a mixture of semi-crystalline polyamide (A) and amorphous polyamide (B) (Examples 1, 3, 4, 6-8) were found to be stable against hypochlorite alkaline solutions.

[0095] Surprisingly, when molded articles were stored in an aqueous solution containing hypochlorite, polyamide molding materials containing a mixture of semicrystalline polyamide (A) and amorphous polyamide (B) showed a significantly smaller weight loss compared to polyamide molding materials containing only semicrystalline polyamide (A) (Comparative Examples 2 and 5) (Table 2). This weight loss is thought to be due to oxidative decomposition of the polyamide molding material and the resulting damage. In the case of the polyamide molding materials of the examples of the present invention, this damage is significantly smaller compared to the polyamide molding materials of the comparative examples.

[0096] This finding is also confirmed by measuring the tear strength after contact with a solution containing hypochlorite (Table 3). Polyamide molding materials containing a mixture of semicrystalline polyamide (A) and amorphous polyamide (B) (Examples 1, 3, 4 and 6-8) clearly maintain better tear strength when contacted with a solution containing hypochlorite compared to polyamide molding materials containing only semicrystalline polyamide (A) (Comparative Examples) (Comparative Examples 2 and 5).

Claims

1. The use of polyamide molding materials for producing molded articles resistant to aqueous solutions containing hypochlorous acid and / or its salts, The polyamide molding material has the following composition: A semicrystalline polyamide (A) comprising 21 to 67.9% by weight of at least one such polyamide (A) having a heat of fusion of 30 J / g or more as measured according to ISO 11357-3 (2013); 15 to 30% by weight of at least one amorphous or microcrystalline polyamide (B), wherein the amorphous or microcrystalline polyamide (B) has a heat of fusion of 28 J / g or less as measured according to ISO 11357-3 (2013); 0 to 60% by weight of at least one inorganic filler (C); 0 to 6% by weight of at least one additive (D); and A polymer (E) in an amount of 0 to 20% by weight, wherein the polymer (E) is different from any of the at least one semicrystalline polyamide (A), the at least one amorphous or microcrystalline polyamide (B), and the at least one additive (D); Here, components (A) to (E) total 100% by weight, and The at least one semicrystalline polyamide (A) is selected from the group consisting of PA 6T / 6I, PA 10T, PA 10T / 6T, PA 10T / 6T / 10I / 6I, PA 12T, PA 10T / 10I, PA 6T / 6, PA 6T / 66, PA 10T / 6T / 1012 / 612, PA 6T / BACT, PA 66 / BAC6 / MACM6, PA 66 / BAC6 / PACM6, PA 66 / BAC6 / IPD6, and mixtures or copolymers thereof, and has a melting point of 280 to 325°C when measured according to ISO 11357-3 (2013). The use of polyamide molding material, characterized by the following:

2. Components for transporting and / or storing drinking water or hot water, Components in swimming pools, bubble baths, and heating systems. Components for kitchens, bathrooms, saunas, and toilets. Mixers, faucets, water meters, valves, distributors, cartridges, or pumps, and their components. The use according to claim 1 for manufacturing a molded article selected from the group consisting of the following.

3. The above-mentioned at least one amorphous or microcrystalline polyamide (B) When measured according to ISO 11357-3 (2013), the heat of fusion is 25 J / g or less, and / or According to ASTM D 1003-13 (2013), when measured on a 2 mm thick plate, at least 80% light transmittance and / or, Glass transition temperature measured according to ISO 11357-2 (2013): 60–240°C The use according to claim 1 or 2, characterized by demonstrating the following.

4. The use according to any one of claims 1 to 3, characterized in that the at least one amorphous or microcrystalline polyamide (B) is formed from monomers (b1), (b2), and optionally (b3): (b1) At least one diamine selected from the group consisting of 1,6-hexanediamine, 1,10-decanediamine, 1,12-dodecanediamine, 2-methyl-1,5-pentanediamine, m-xylylenediamine, bis(4-amino-3-methylcyclohexyl)methane, bis(4-aminocyclohexyl)methane, bis(4-amino-3,5-dimethylcyclohexyl)methane, bis(aminomethyl)cyclohexane, ND(2,2,4-trimethylhexamethylenediamine), and IND(2,4,4-trimethylhexamethylenediamine); and (b2) At least one dicarboxylic acid selected from the group consisting of 1,6-hexanedioic acid, 1,10-decanedioic acid, 1,12-dodecanedioic acid, 1,14-tetradecanedioic acid, 1,16-hexadecanedioic acid, 1,18-octadecanedioic acid, dimeric fatty acids having 36 or 44 carbon atoms, cyclohexanedicarboxylic acid, isophthalic acid, terephthalic acid, and naphthalenedicarboxylic acid; and / or (b3) Laurin lactam.

5. The use according to any one of claims 1 to 4, characterized in that the at least one amorphous or microcrystalline polyamide (B) is selected from the group consisting of the following: PA 6I、PA MPMDI / MPMDT、PA 6I / 6T / 6N、PA MXDI / 6I、PA MXDI / MXDT / 6I / 6T、PA MXDI / 12I、PA MXDI、PA MXDI / MXD6、PA MACM10、PA MACM12、PA MACM14、PA MACM16、PA MACM18、PA NDT / INDT、PA TMDC10、PA TMDC12、PA TMDC14、PA TMDC16、PA TMDC18、PA PACM12、PA PACM14、PA PACM16、PA PACM18、PA PACM10 / 11、PA PACM10 / 12、PA PACM12 / 612、PA PACM12 / PACM14 / 612 / 614、PA MACMI / 12、PA MACMT / 12、PA MACMI / MACMI12、PA MACMI / MACMI / MACMIｮ、PA MACMT / MACMIｮ6I / 6T / MACIMI / MACIMI, PA 6I / 6T / MACIMI / MACIMI / 12, PA MACIMI / 1 MAMI / MAMT / MAM12 / 12、PA MAMI / MAMT / MAM12、1A 6I / 6T / MAII / 522122222222 TMDC12 / TMDCI、PA TMDC12 / TMDCI / TMDC36、PA TMDC12 / TMDI、1A 6I / 6T / BACI / BACTI6I / 6T / MACMI / MACMT / BACI / BACT, PA MACMI / MACMT / MACM12 / MACM36, PA MACMI / MACMT / MACM14 / MACM36, PA MACMI / MACMT / MACMCHD / MACM36, PA TMDCI / TMDCT / TMDC12 / TMDC36, PA TMDCI / TMDCT / TMDC14 / TMDC36, PA TMDCI / TMDCT / TMDCCHD / TMDC36, and mixtures or copolymers thereof. Here, MACM may be substituted with PACM and / or TMDC up to a maximum of 35 mol% of the total molar proportion of all monomers, and / or Laurin lactam may be completely or partially replaced with caprolactam, and / or A dimeric fatty acid having 36 carbon atoms may be completely or partially substituted with a dimeric fatty acid having 44 carbon atoms.

6. The aforementioned polyamide molding material, The at least one inorganic filler (C), The at least one additive (D), and The above at least one further polymer (E) Includes at least one selected from The use according to any one of claims 1 to 5, characterized in that

7. The polyamide molding material includes at least one inorganic filler (C) selected from the group consisting of fibrous fillers, needle-shaped fillers, and mixtures and combinations thereof. The use according to claim 6, characterized by the features described herein.

8. The polyamide molding material includes at least one inorganic filler (C) selected from the group consisting of glass fibers, carbon fibers, and mixtures and combinations thereof. The use according to claim 6 or 7, characterized by the features described herein.

9. The polyamide molding material has the following composition: 25 to 67.9% by weight of at least one semicrystalline polyamide (A); 15-30% by weight of at least one amorphous or microcrystalline polyamide (B); 0.1 to 50% by weight of at least one inorganic filler (C); 0.01 to 5% by weight of at least one additive (D); and 0.5 to 15% by weight of at least one polymer (E); Here, components (A) to (E) total 100% by weight. The use according to any one of claims 1 to 8, characterized in that

10. The aforementioned polyamide molding material, The at least one inorganic filler (C), and / or The above-mentioned at least one additive (D) The use according to any one of claims 1 to 5, characterized by including the following:

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