TH99439A - Additive polyolefin mixtures - Google Patents

Abstract

DC60 (30/01/51) Added polyolefin mixtures containing: A) from 15% to 55% by weight of polypropylene components; B) from 20% to 80% by weight of fillers; C) from 4% to 25% of elastomeric polymers or polymer mixtures; The percentages of A), B), and C) are referred to as the sum of A), B), and C), and A) is selected from the following mixtures: a) a polypropylene mixture containing 20% to 80% by weight of polypropylene fraction AI) with a melt flow rate L (MFRI) of 500 g/10 min or more, and from 20% to 80% by weight of polypropylene fraction AII) with a melt flow rate L (MFRII) from 0.1 to 30 g/10 min, where the percentages of AI) and AII) are referred to as the sum of AI) and AII); or b) polypropylene mixtures containing from 15% to 72% by weight of polypropylene fraction AI) with a melt flow rate L (MFRI) of 500 g/10 min or more, from 15% to 70% by weight of polypropylene fraction AII) with a melt flow rate L (MFRII) from 0.1 to 30 g/10 min and from 0.5% to 15% by weight of the compatible agent Q), where the above percentages of AI), AII) and Q) are referred to as the sum of AI), AII) and Q) of the filled polyolefin mixtures consisting of: A) from 15% to 55% by weight of polypropylene components; B) from 20% to 80% by weight of the filler; C) From 4% to 25% of elastomeric polymer or polymer mixture; where the percentages of A), B), and C) are referred to as the sum of A), B), and C), and A) is selected from the following mixtures: a) Polypropylene mixtures containing from 20% to 80% by weight of polypropylene fraction AI) with a melt flow rate L (MFRI) of 500 g/10 min or more, and from 20% to 80% by weight of polypropylene fraction AII) with a melt flow rate L (MFRII) from 0.1 to 30 g/10 min, where the percentages of AI) and AII) are referred to as the sum of AI) and AII); or b) a polypropylene mixture containing 15% to 72% by weight of polypropylene fraction AI) with a melt flow rate L (MFRI) of 500 g/10 min or more, from 15% to 70% by weight of polypropylene fraction AII) with a melt flow rate L (MFRII) from 0.1 to 30 g/10 min and from 0.5% to 15% by weight of the coupling agent Q), where the above percentages of AI), AII), and Q) are referred to as the sum of AI), AII), and Q).

Claims (11)

1. Filled polyolefin mixtures containing: A) from 15% to 55% by weight of polypropylene components; B) from 20% to 80% by weight of fillers; C) from 4% to 25% of elastomeric polymers or polymer mixtures; The percentages of A), B), and C) are referred to as the sum of A), B), and C), and A) is selected from the following mixtures: a) a polypropylene mixture containing 20% to 80% by weight of polypropylene fraction AI) with a melt flow rate (MFRI) of 500 g/10 min or more, and from 20% to 80% by weight of polypropylene fraction AII) with a melt flow rate (MFRII) from 0.1 to 30 g/10 min, where the percentages of AI) and AII) are referred to as the sum of AI) and AII); or b) polypropylene mixtures containing 15% to 72% by weight of polypropylene fraction AI) with a melt flow rate (MFRI) of 500 g/10 min or more, from 15% to 70% by weight of polypropylene fraction AII) with a melt flow rate (MFRII) from 0.1 to 30 g/10 min and from 0.5% to 15% by weight of conjugate agent Q), where the aforementioned percentages of AI), AII), and Q) are referred to as the sum of AI), AII), and Q); where such fractions AI) and AII) are independently selected from propylene homopolymers and mixed propylene copolymers containing up to 5% by molar of ethylene and/or C4-C10 (formula)-olefin; The total molten flow rate was measured according to ISO 1133 with a load of 2.16 kg at 230°C. 2. A mixture of claim 1, in which the MFR1 of polypropylene fraction (AI) is obtained without degrading treatment. 3. A mixture of claim 1, in which propylene homopolymer and copolymer of polypropylene fraction (AI) are directly obtained under catalytic polymerization with a metallocene-based environment. 4. A mixture of the claims in Clause 1, in which propylene homopolymer and copolymer of polypropylene fraction (AI) exhibit a molecular weight distribution, in terms of Mw/Mn ratio, less than 4. 5. A mixture of the claims in Clause 1, in which propylene homopolymer and copolymer of polypropylene fraction AII have a molecular weight distribution, in terms of Mw/Mn ratio, greater than 10. 6. A mixture of the claims in Clause 1, in which polypropylene fraction AII) contains 30% to 70% by weight of fraction i) with a molecular weight distribution, in terms of Mw/Mn ratio, from 4 to 7, and from 30% to 70% by weight of fraction ii) with a molecular weight distribution, in terms of Mw/Mn ratio, greater than 10, with such fractions i) and ii) being independently selected from mixed propylene homopolymers and propylene copolymers containing up to 5% by molar of ethylene and/or C4-C10 (formula)-olefin; with such percentages of i) and ii) being referenced to the sum of i) and ii). 7. A mixture of claims 1, in which filler B) is selected from inorganic fillers and fibers, or a combination thereof. 8. A mixture of claim 1, in which filler B) consists primarily of glass fibers and polypropylene component A) contains mixture b). 9. The mixture of claim 1, in which filler B) is primarily a mineral filler and polypropylene A) is a mixture of both, contains filler a). 10. The use of compounds under claim 1 for the manufacture of items by injection molding, extrusion, or hot forming. 11. The application of the combination of Claim 1 is intensive.