THERMOPLASTIC MOLDING MATERIAL

Abstract

Described herein is a method of using copolyamides c) produced by polymerization of components A′) 15% to 84% by weight of at least one lactam, and B′) 16% to 85% by weight of a monomer mixture (M) including components B1′) at least one C.sub.32-C.sub.40-dimer acid and B2′) at least one C.sub.4-C.sub.12-diamine, where the percentages by weight of the components A′) and B′) are in each case based on the sum of the percentages by weight of the components A′) and B′), the method including using the copolyamides c) to increase an impact strength and/or breaking elongation of molded articles made of molding materials including thermoplastic polyamides, which are different from copolyamides c).

Claims

1. A method of using copolyamides c) produced by polymerization of components A′) 15% to 84% by weight of at least one lactam, and B′) 16% to 85% by weight of a monomer mixture (M) comprising components B1′) at least one C.sub.32-C.sub.40-dimer acid and B2′) at least one C.sub.4-C.sub.12-diamine, wherein the percentages by weight of the components A′) and B′) are in each case based on the sum of the percentages by weight of the components A′) and B′), the method comprising using the copolyamides c) to increase an impact strength and/or breaking elongation of molded articles made of molding materials comprising thermoplastic polyamides, which are different from copolyamides c), wherein the thermoplastic molding materials further comprise at least one elastomer selected from the group consisting of b1) copolymers of ethylene with at least one comonomer selected from the group consisting of C.sub.3-12-olefins, C.sub.1-2-alkyl (meth)acrylates, (meth)acrylic acid and maleic anhydride as component B1), and b2) polyethylene or polypropylene as component B2), grafted with maleic anhydride, wherein component B1) is optionally additionally grafted with maleic anhydride.

2. (canceled)

3. A thermoplastic molding material comprising a) 38.8% to 98.8% by weight of at least one thermoplastic polyamide which is different from component C) as component A), b) 1.0 to 50.0% by weight of at least one elastomer as component B), selected from the group consisting of b1) copolymers of ethylene with at least one comonomer selected from the group consisting of C.sub.3-12-olefins, C.sub.1-12-alkyl (meth)acrylates, (meth)acrylic acid and maleic anhydride as component B1), and b2) polyethylene or polypropylene as component B2), grafted with maleic anhydride, wherein component B1) is optionally additionally grafted with maleic anhydride, c) 0.2% to 50% by weight of at least one copolyamide produced by polymerization of components A′) 15% to 84% by weight of at least one lactam, and B′) 16% to 85% by weight of a monomer mixture (M) comprising components B1′) at least one C.sub.32-C.sub.40-dimer acid and B2′) at least one C.sub.4-C.sub.12-diamine, wherein the percentages by weight of the components A′) and B′) are in each case based on the sum of the percentages by weight of the components A′) and B′), as component C) d) 0% to 60% by weight of glass fibers as component D), and e) 0% to 30% by weight of further additives and processing aids as component E), wherein the weight percentages for the components A) to E) sum to 100% by weight.

4. The thermoplastic molding material according to claim 3, wherein in component C) the component A′) is selected from the group consisting of 3-aminopropanolactam, 4-aminobutanolactam, 5-aminopentanolactam, δ-aminohexanolactam, 7-aminoheptanolactam, 8-aminooctanolactam, 9-aminononanolactam, 10-aminodecanolactam, 11-aminoundecanolactam, and 12-aminododecanolactam.

5. The thermoplastic molding material according to claim 3, wherein in component C) the component B2′) is selected from the group consisting of tetramethylenediamine, pentamethylenediamine, hexamethylenediamine, decamethylenediamine, and dodecamethylenediamine.

6. The thermoplastic molding material according to claim 3, wherein component C) is PA6/6.36.

7. The thermoplastic molding material according to claim 3, wherein component A) is selected from the group consisting of polyamide 6, polyamide 66, polyamide 6.10, and copolymers or mixtures thereof.

8. The thermoplastic molding material according to claim 3, wherein component C) is employed in an amount of 0.3% to 40% by weight.

9. The thermoplastic molding material according to claim 3, wherein it comprises component B1) in which the at least one comonomer is selected from the group consisting of C.sub.3-8-olefins, C.sub.2-6-alkyl acrylates, and maleic anhydride.

10. The thermoplastic molding material according to claim 3, characterized in that it comprises component B1) grafted with maleic anhydride.

11. A process for producing a thermoplastic molding material according to claim 3, the process comprising mixing the components A) to E).

12. A method of using the thermoplastic molding material according to claim 3, the method comprising using the thermoplastic molding material for producing fibers, films, and molded articles.

13. A fiber, film, or molded article made of a thermoplastic molding material according to claim 3.

14. A process for producing fibers, films, or molded articles, the process comprising extrusion, injection molding or blow molding of the thermoplastic molding material according to claim 3.

15. The thermoplastic molding material according to claim 3, wherein component C) is employed in an amount of 0.5% to 25% by weight.

16. The thermoplastic molding material according to claim 3, wherein component C) is employed in an amount of 1.0% to 10.0% by weight.

Description

EXAMPLES

Examples I

[0251] The following input materials were used: [0252] Polyamide 6: Ultramid® B24N 03 from BASF SE, melting point: 220° C., viscosity number (0.5% in 96% H.sub.2SO.sub.4): 115-135 ml/g, amino end groups: 39-47 mmol/kg [0253] Elastomer 1: Ethylene-propylene elastomer grafted with maleic anhydride; Exxelor™ VA 1801 from ExxonMobil Petroleum & Chemical BVBA, density: 0.88 g/ml, melt flow index (230° C./10 kg; ISO1133): 9 g/10 min, glass transition temperature: −44° C. [0254] Elastomer 2: Ethylene-butyl acrylate copolymer, Lucalen A2700M from lyondellbasell [0255] Elastomer 3: Ethylene-butyl acrylate copolymer, Lucalen A2540D from lyondellbasell [0256] PA6/6.36: Copolyamide of 67% by weight of caprolactam, 5% by weight of hexamethylenediamine and 28% by weight of C.sub.36-diacid, melting point: 196° C. [0257] Stabilizer 1: Irganox® B 1171 from BASF SE [0258] Filler: Micro Talc IT Extra from Mondo Minerals BV [0259] Polyamide 6.10: Zytel RS LC3060 NC010 from DuPont de Nemours (Deutschland) GmbH, melting point: 220° C., viscosity number (formic acid, ISO307): 135-149 ml/g [0260] Elastomer 4: Ethylene-1-octene copolymer grafted with maleic anhydride, FUSABOND N 598 from DuPont International Operations Sarl, glass transition temperature (ASTM D3418): −50° C., density: 0.87 g/ml [0261] Elastomer 5: Ethylene-butyl acrylate copolymer grafted with maleic anhydride, Compoline CO/PA BA from AUSERPOLIMERI SRL, density: 0.92-0.93 g/ml, melt flow index 190° C./2.16 kg, 6301133): 2-4 g/10 min [0262] Stabilizer 2: Irganox® 1098 ID from BASE SE [0263] Lubricant: metal stearate

[0264] The molding materials were produced by mixing the ingredients listed below in a twin-screw extruder ZE 25 A UTXi at temperatures of 260° C. The properties specified in the tables 1 and 2 below were determined by the specified standards valid 2018. The proportions of the ingredients are reported in % by weight.

TABLE-US-00002 TABLE 1 Example C1 C2 1 2 Polyamide 6 59.1 59.1 49.1 49.1 Stabilizer 1 0.5 0.5 0.5 0.5 Elastomer 1 15 15 15 15 Filler 0.4 0.4 0.4 0.4 Elastomer 2 25 25 Elastomer 3 25 25 PA6/6.36 10 10 Tensile modulus ISO527 MPa 1068 1007 1027 1006 Yield stress, 50 mm ISO527 MPa 29 27 29 28 Yield strain, 50 mm/min. ISO527 % 6.9 6.5 6.5 6.5 Nominal breaking elongation ISO527 % 181 105 236 176 Charpy notched impact ISO179/ kJ/m.sup.2 83 86 111 107 strength (23° C.) 1eA Charpy notched impact IS0179/ kJ/m.sup.2 17 19 28 23 strength (−30° C.) 1eA

TABLE-US-00003 TABLE 2 Example C3 3 4 Polyamide 6.10 75.55 52.55 39.55 Elastomer 4 20.0 20.0 20.0 Elastomer 5 4.0 4.0 4.0 Stabilizer 2 0.200 0.200 0.200 Lubricant 0.255 0.255 0.255 PA6/6.36 23 36 Tensile modulus ISO527 MPa 1450 1356 1188 Yield stress, 50 mm ISO527 MPa 39 36 32 Yield strain, 50 mm/min. ISO527 % 5.4 4.3 4.3 Nominal breaking ISO527 % 142 197 221 elongation Charpy notched impact ISO179/ kJ/m.sup.2 82 91 94 strength (23° C.) 1eA

Examples II

[0265] The following input materials were used: [0266] Polyamide 6: Ultramid B22 NE 01 from BASE SE, viscosity number (0.5% in 96% H.sub.2SO.sub.4): 103-112 ml/g, amino end groups: 56-63 mmol/kg [0267] Glass fiber: Chopped glass fiber PPG 3660 from Electric Glass Fiber NL B.V. [0268] Elastomer 6: Amorphous ethylene copolymer grafted with 0.5-1% by weight of maleic anhydride, density: 0.8 g/ml, glass transition temperature: −59° C., Exxelor™ VA 1803 from ExxonMobil Petroleum & Chemical BVBA [0269] Carbon black: Masterbatch composed of 30% by weight of carbon black in PA6; Ultrabatch 420 from Clariant Plastics & Coatings (Deutschland) GmbH [0270] Lubricant: Acrawax C Beads from Lonza Cologne GmbH [0271] Stabilizer 2: Irganox 1098 ID from BASE SE [0272] PA6/6.36: Copolyamide of 67% by weight of caprolactam, 5% by weight of hexamethylenediamine and 28% by weight of C.sub.36-diacid, melting point: 196° C.

[0273] The molding materials were produced by mixing the ingredients listed below in a twin-screw extruder ZSK 25 at a temperature of 260° C. The properties specified in the tables 3 and 4 below were determined by the specified standards valid 2018. The proportions of the ingredients are reported in % by weight.

TABLE-US-00004 TABLE 3 Example C5 5 6 Polyamide 6 56.20 54.20 51.20 Glass fiber 30.00 30.00 30.0 Elastomer 6 10.00 10.00 10.0 Carbon black 3.30 3.30 3.30 Lubricant 0.30 0.30 0.30 Stabilizer 2 0.20 0.20 0.20 PA6/6.36 2.00 5.00 Tensile modulus ISO527 MPa 8055 8091 7918 Tensile stress at break ISO527 MPa 124.33 126.89 122.08 Tensile strain at break ISO527 % 3.58 3.70 3.76 Charpy notched impact ISO179/ kJ/m.sup.2 15.3 15.4 17.2 strength (23° C.) 1eA Charpy notched impact ISO179/ kJ/m.sup.2 11.3 12.2 12.5 strength (−30° C.) 1eA Charpy unnotched impact 83.0 90.6 93.8 strength (23° C.) Charpy unnotched impact 90.5 95.6 95.1 strength (−30° C.)