MXPA99001416A - Composition of thermoplastic olefin, capable of painting directly, containing polyethylene oxide waxes - Google Patents

Abstract

Directly painted polymer compositions contain (1) a thermoplastic olefin, (2) a homopolymer of propylene or copolymer of propylene with ethylene, or an alpha-olefin of 4 to 8 carbon atoms, grafted with an anhydride of an alpha dicarboxylic acid. , α-unsaturated aliphatic, (3) an oxidized polyethylene wax having a melting temperature of less than 116 ° C and an acid number of less than 40, (4) a functionalized polymer that reacts with the anhydride groups of the grafted polymers, and, optionally, (5) a polyolefin rubber grafted with an alpha, α-unsaturated anhydride dicarboxylic anhydride, and (6) an ethylene polymer grafted with an alpha, α-unsaturated aliphatic α-unsaturated anhydride anhydride. The compositions are particularly useful for making injection molded parts such as automobile bumpers and exhibit excellent adhesion to paint and durability.

Description

"COMPOSITION OF THERMOPLASTIC OLEFIN, CAPABLE OF PAINTING DIRECTLY, CONTAINING RUSTY POLYETHYLENE WAXES" FIELD OF THE INVENTION J This invention relates to thermoplastic olefin compositions containing polymers grafted with an aliphatic β-unsaturated dicarboxylic acid anhydride, and functionalized polymeric additives.

BACKGROUND OF THE INVENTION The thermoplastic olefins (TPO) are uncrosslinked mixtures of olefin polymers and polyolefin elastomers. They can be made by physically mixing in an internal mixer, or by polymerization in a reactor. These materials are not capable of being painted or coated, because the paints or coatings consist of polar materials similar to urethanes, acrylics, epoxies or melamines that have very poor adhesion to non-polar materials such as polyolefins. Typically, an adhesion promoter is used as the bonding layer between the TPO substrate and the paint coating. The extra step is added to the cost of the product and the coating is not very durable.

- - European Patent Application Number 662,496 discloses a polymer composition capable of being painted or printed consisting of a polyolefin or a polyolefin / rubber blend and from 0.1 percent to 10 percent by weight of at least one polymeric additive that is the reaction product of (a) a polyolefin or a polyester modified by an unsaturated acid, ester or anhydride, and (b) a polyoxyethylene terminated with an amine, hydroxy or alkoxy, polyoxypropylene, or a copolymer of the two, eg the reaction product of the polypropylene wax modified with maleic anhydride and a poly (ethylene oxide) glycol, blocked with methoxy. European Patent Application Number 634,424 discloses a mixture of polypropylene with the reaction product of the maleated polypropylene and a polyether amine. The blend exhibits improved paint capacity, improved impact strength and excellent melt flow ability, compared to polypropylene blends and the reaction product of polypropylene and maleated polypropylene. However, the compositions disclosed in Patent Numbers EP 662,496 and EP 634,424 both lack durability. Therefore, there is still a need for the TPO composition that can fill the most stringent requirements for paint adhesion and durability that will - require in the market today, particularly in the automotive industry.

COMPENDIUM OF THE INVENTION The composition of this invention comprises by weight: (1) 100 parts of a thermoplastic olefin comprising an olefin polymer having an isotactic index of at least 80 and an olefin polymer rubber. The thermoplastic olefin has my rubber content of at least 20 percent; (2) from about 5 to about 20 parts per 100 parts of the thermoplastic olefin of a propylene homopolymer or a copolymer of propylene with ethylene or a alpha-olefin of 4 to 8 carbon atoms having an ethylene or alpha- olefin from about 0.5 percent to about 20 percent, grafted with an aliphatic α, β-unsaturated dicarboxylic acid anhydride and having an anhydride content of from about 2 percent to about 5 percent; (3) from about 3 to about 20 parts per 100 parts of the thermoplastic olefin of an oxidized polyethylene wax, having a melting temperature of less than 116 ° C and an acid number of less than 40; (4) a functionalized polymer that is reactive with the anhydride groups of the grafted copolymers, which is selected from the group consisting of: (a) from about 2 to about 6 parts per 100 parts of the thermoplastic olefin of the amine-terminated polyalkylene glycol; (b) from about 2 to about 6 parts per 100 parts of the thermoplastic olefin of a polyolefin terminated with hydroxy; (c) from about 2 to about 6 parts per 100_ parts of the thermoplastic olefin of a hydroxy-terminated polybutadiene; (d) from about 2 to about 8 parts per 100 parts of the thermoplastic olefin of an olefin copolymer terminated with hydroxy / alkylene oxide; (e) from about 2 to about 8 parts per 100 parts of the thermoplastic olefin of a hydroxy-terminated polyalkylene oxide; (f) from about 2 to about 8 parts per 100 parts of the thermoplastic olefin of a methoxy-terminated polyalkylene oxide; - (g) from about 2 to about 8 parts per 100 parts of the thermoplastic olefin of an amine-terminated olefin / alkylene oxide copolymer; and (h) mixtures thereof; (5) optionally, from about 5 to about 30 parts per 100 parts of the thermoplastic olefin of a polyolefin rubber grafted with an aliphatic α, β-unsaturated dicarboxylic anhydride, having an anhydride content of at least 0.3 percent, but less than 3 percent comprising an ethylene polymer and an alpha-olefin of 3 to 8 carbon atoms, optionally containing about 0.5 percent to about 10 percent of a diene, having a content of ethylene from about 30 percent to about 70 percent, and (6) optionally, from about 5 to about 20 parts per 100 parts of the thermoplastic olefin of an ethylene polymer grafted with an anhydride of a dicarboxylic acid a, b- unsaturated aliphatic, having an anhydride content of about 1 percent to about 16 percent, and a molecular weight Mn of about 500 to about amente 5, 000", as long as at least 5 - parts of the polypropylene grafted with anhydride or eJL_ copolymer of propylene and 3 parts of the oxidized polyethylene wax per 100 parts of the thermoplastic elastomer are also present. Injection molded parts such as automotive bumpers of this composition are capable of being painted directly with polar paints or coatings without the need for an adhesion promoter layer between the surface of the thermoplastic olefin and the paint, and exhibit paint adhesion. excellent and durability.

DETAILED DESCRIPTION OF THE INVENTION Component (1) of the composition of this invention is a thermoplastic olefin comprising a crystalline olefin polymer and an olefin polymer rubber, the thermoplastic olefin has a rubber content of at least 20 percent. Suitable thermoplastic olefins include, for example, (a) a composition comprising, by weight, (i) from about 10 percent to about 60 percent, preferably from about 20 percent to about 50 percent of a homopolymer of propylene having an isotactic index of greater than 90, preferably between 95 and 98, or a copolymer of crystalline propylene with ethylene and / or an alpha-olefin of 4 to 8 carbon atoms having a propylene content greater than 85% hundred, and an isotactic index of more than 85; (ii) from about 30 percent to about 60 percent, preferably from about 30 percent to about 50 percent, of an amorphous ethylene-propylene or ethylene-butene copolymer, optionally containing from about 1 percent to about 10 percent. percent of a diene, which is xylene soluble at room temperature and has an ethylene content of about 30 percent to about 70 percent; - (iii) from about 2 percent to about 20 percent, preferably from about 7 percent to about 15 percent of a semi-crystalline ethylene-propylene or ethylene-butene copolymer which is xylene insoluble at room temperature and has a content of ethylene greater than 75 percent, but less than 92 percent; and (iv) from about 5 percent to about 20 percent, preferably from about 7 percent to about 15 percent of an ethylene polymer having a density of 0.91 to 0.96 gram per cubic centimeter, and a melt index from 0.1 to 100 grams per ten minutes, preferably from about 15 to about 50 grams per 10 minutes. The ethylene homopolymer is preferred. However, copolymers containing 8 percent or less of an alpha-olefin comonomer can also be used. (b) a composition comprising, by weight: (i) from about 20 percent to about 70 percent, preferably from about 50 percent to about 70 percent of a crystalline propylene homopolymer having an isotactic index greater than 90, preferably between 95 and 98, or a copolymer of crystalline propylene with ethylene and / or an alpha-olefin of 4 to 8 carbon atoms having a propylene content greater than 85 percent, and an isotactic index of more than 85; (ii) from about 20 percent to about 75 percent, preferably from about 30 percent to about 50 percent, and most preferably from about 30 percent to about 35 percent of an amorphous ethylene copolymer, which is selects from the group consisting of (1) ethylene / propylene, (2) ethylene / buten-1, (3) ethylene / octen-1, and (4) mixtures thereof, optionally containing from about 1 percent to about 10 percent, preferably from about 1 percent to about 4 percent of a diene, which is xylene soluble at room temperature and having an ethylene content of about 30 percent to about 70 percent, preferably about 40 percent. percent to approximately 60 percent; and (iii) from about 2 percent to about 30 percent, preferably from about 2 percent to about 10 percent, and most preferably from about 2 percent to about 5 percent of a semi-crystalline ethylene copolymer which is selected from the group consisting of (1) ethylene / propylene, (2) ethylene / buten-1, (3) ethylene / octen-1, and (4) mixtures thereof, which is xylene insoluble at room temperature and it has an ethylene content of more than 90 percent; (c) a composition comprising, by weight, (i) at least one heterophasic polyolefin composition comprising: (1) from about 90 percent to about 55 percent of a propylene polymer material that is selected from the group which consists of a propylene homopolymer having an isotactic index greater than 90, and a crystalline propylene copolymer and a - alpha-olefin of the formula CH2 = CHR, wherein R is H or alkyl of 2 to 6 carbon atoms, the alpha-olefin being less than 10 percent of the copolymer, and (2) about 10 percent to about 45 percent of an elastomeric copolymer of propylene and an alpha-olefin of the form CH 2 = CHR, wherein R is H or alkyl of 2 to 6 carbon atoms, the alpha-olefin being from about 50 percent to about 70 percent percent of the elastomeric copolymer, and from about 10 percent to about 40 percent of the elastomeric copolymer, being insoluble in xylene at room temperature, and (ii) from about 5 to about 50 parts, preferably from about 10 to about 30 parts and particularly preferably from about 10 to about 25 parts per 100 parts of (c) (i) of an elastomeric copolymer of ethylene and an alpha-olefin of 3 to 8 carbon atoms made with a metal catalyst ocean If more than one heterophasic polyolefin (c) (i) is present, the heterophasic polyolefins can be combined in any proportion. (d) a composition comprising, by weight: (i) from about 30 percent to about 50 percent, preferably of - about 35 percent to about 45 percent, of a propylene homopolymer having an isotactic index greater than 90, and (ii) from about 70 percent to about 50 percent, preferably from about 65 percent to about 55 percent one hundred, of an olefin polymer composition comprising: (1) from about 25 percent to about 50 percent of a crystalline propylene homopolymer with a solubility in xylene at room temperature, of less than or equal to 4 percent, a crystalline copolymer of propylene with ethylene or a alpha-olefin of 4 to 8 carbon atoms having an ethylene or alpha-olefin content of about 0.5 percent to about 3 percent, and a solubility in xylene at room temperature less than or equal to 4 percent, and (2) from about 50 percent to about 75 percent of an amorphous copolymer of ethylene and an alpha-olefin of 4 to 8 carbon atoms, wherein the alpha-olefin content is from about 10 percent to about 20 percent, and the copolymer is from about 10 percent to about 40 percent soluble in xylene at room temperature; Y - (e) a composition comprising, by weight: (i) from about 80 percent to about 30 percent, preferably from about 70 percent to about 50 percent, of a propylene homopolymer having a higher isotactic index of 90, and (ii) from about 20 percent to about 70 percent, preferably from about 30 percent to about 50 percent, of an elastomeric copolymer of ethylene and an alphaolefin of 3 to 8 carbon atoms, containing about 1 percent to about 10 percent, preferably from about 1 percent to about 4 percent of a diene, and having an ethylene content of about 30 percent to about 70 percent, preferably about 40 percent one hundred to about 60 percent. The thermoplastic olefins (a) and (b) are preferred. The thermoplastic olefins (a) and (b) and the compositions (c) (i) and (d) (ii) are typically prepared by sequence polymerization of at least two steps. Alternatively, the components can be prepared separately and then mixed together by means of - Kneaded by melting or mixed by melting. The polymerization conditions and the polymerization catalyst are described in greater detail in U.S. Patent Nos. 5,143,978; 5,302,454; 5,360,868, and 5,486,419, which are incorporated herein by reference. Sequential polymerization is preferred. For TPO (a), (i) can be made in a first reactor, (ii) and (iii) in the second reactor, and (iv) in the third reactor. Alternatively, (iv) can be made in the second reactor and (ii) and (iii) in the third reactor. For TPO (b), (i), (ii) and (iii) are preferably formed in a reactor or series of reactors in at least two stages, first polymerizing the propylene to form (i) and then polymerizing the ethylene and propylene, buten-1 or octen-1, or mixtures thereof in the presence of (i) and the catalyst used in the first step to form (ii) and (iii). The polymerization can be carried out in a liquid or gas phase, or in a liquid-gas phase. For TPO (b), (i) can be prepared using a Ziegler-Natta catalyst or a mixture of Ziegler-Natta and metallocene catalysts. Components (ii) and (iii) can be prepared using the Ziegler-Natta or metallocene catalysts or a combination of the two with one type of catalyst being used for one stage and the other type of catalyst being used for the next stage, when TPO is prepared by polymerization by sequence. Alpha-olefins of 4 to 8 carbon atoms useful in the preparation of the thermoplastic olefins include, for example, buten-1, penten-1; hexen-1; 4-methylpenten-1 and octen-1. The diene, when present, is typically a butadiene; 1,4-hexadiene, 1,5-hexadiene or ethylidenebornene. The component (2) is a homopolymer of propylene or a copolymer of propylene with ethylene or an alpha-olefin of 4 to 8 carbon atoms, grafted with an anhydride of an aliphatic alpha-beta-unsaturated dicarboxylic acid and having a content of ethylene or alpha-olefin from about 0.5 percent to about 20 percent, preferably from about 1 percent to about 10 percent, and especially preferably from about 1 percent to about 5 percent. The polymer has an anhydride content of from about 2 percent to about 5 percent, preferably 3 percent to about 4 percent, and preferably has a molecular weight Mn of about 2500 to about 25000, more preferably of about 3000 to about 10,000. Maleic anhydride is the preferred anhydride. The component (2) is present in an amount of about 5 to about 20 parts, preferably about 8 to about 16 parts, particularly preferably about 10 to about 14 parts per 100 parts of the thermoplastic olefin. The component (3) is an oxidized polyethylene wax having a melting temperature of less than 116 ° C and an acid number of less than 40. The oxidized wax is present in an amount from about 3 to about 20 parts, preferably from about 5 to about 15 parts, and especially preferably from about 5 to about 10 parts per 100 parts of the thermoplastic polyolefin, whether the maleic anhydride-grafted rubber is present or not. Component (4) is a functionalized polymer that is reactive with the anhydride groups of the grafted polymers (2) and, when present (5) and (6) which are selected from the group consisting of (a) a finished polyalkylene glycol with amine (b) a polyolefin terminated with hydroxy, (c) a polybutadiene terminated with hydroxy, (d) olefin / alkylene oxide copolymers terminated with hydroxy, (e) polyalkylene oxides terminated with hydroxy, (f) polyalkylene oxides methoxy-terminated, (g) olefin-terminated alkylene / alkylene alkoxide copolymers and (h) mixtures thereof. Component (4) (a) when present, an amount of from about 2 to about 6 parts, preferably from about 2 to about 4 parts, per 100 parts of the thermoplastic olefin is used. The polyalkylene glycol, for example, can be polyethylene glycol, polypropylene glycol, copolymers of ethylene glycol and propylene glycol, poly (1,2-butylene glycol), and poly (tetramethylene glycol). Component (4) (b), when present, is used in an amount of from about 2 to about 6 parts, preferably from about 2 to about 4 parts, per hundred parts of the thermoplastic olefin. Polyethylene is the preferred polyolefin, although polypropylene, polybutene and copolymers of ethylene and another alpha-olefin can also be used. Component (4) (c), when present, is used in an amount of about 2 to about 6 parts, preferably from about 2 to about 4 parts per hundred parts of the thermoplastic olefin. Component (4) (d), when present, is used in an amount of from about 2 to about 8 parts, preferably from about 2 to about 6 parts, per hundred parts of the thermoplastic olefin. A copolymer of ethylene / ethylene oxide is preferred, although other copolymers such as ethylene / propylene oxide, propylene oxide / ethylene, butene / ethylene oxide, and butene / propylene oxide copolymers may also be used. The amount of the alkylene oxide may be from about 10 percent to about 99.9 percent, preferably from about 50 percent to about 98 percent, and especially preferably from about 75 percent to about 95 percent, based on 100 percent of the copolymer. Component (4) (e), when present, is used in an amount of from about 2 to about 8 parts, preferably from about 2 to about 6 parts, per hundred parts of the thermoplastic olefin. Polyethylene glycol is preferred, however, polypropylene glycol, copolymers of ethylene glycol and propylene glycol, poly (1,2-butylene glycol), and poly (tetramethylene glycol) can also be used. Component (4) (f), when present, is used in an amount of from about 2 to about 8 parts, preferably from about 2 to about 6 parts, per hundred parts of olefin-8. thermoplastic Suitable polyalkylene oxides are those described under (4) (e). Component (4) (g), when present, is used in an amount from about 2 parts to about 8 parts, preferably from about 2 parts to about 6 parts, per hundred parts of the thermoplastic olefin. The amount of the ethylene oxide can be from about 10 percent to about 99.9 percent, preferably about 50 percent to about 98 percent, and especially preferably from about 75 percent to about 95 percent. Examples of suitable olefin / ethylene oxide copolymers are described under (4) (d). When a combination of functionalized polymers is used, the amount of each component can vary widely from about 0.1 percent to about 99.9 percent of each, based on the total amount of the functionalized polymers. It is preferred that a component be present in an amount of > 50 percent, preferably > 60 percent, based on the total amount of functionalized polymers. Instead of adding a functionalized polymer directly to the thermoplastic olefin, an adduct of the functionalized polymer and an anhydride-grafted polypropylene or an ethylene / propylene copolymer can be prepared separately, which is then mixed with the thermoplastic olefin. The optional component (5) is a polyolefin rubber grafted with an aliphatic α, β-unsaturated dicarboxylic anhydride and comprises an ethylene polymer and a 3 carbon atoms alpha-olefin, optionally containing about 0.5 percent to about 10 percent of a diene, preferably from about 2 percent to about 6 percent. The polyolefin rubber grafted with anhydride has an ethylene content of about 30 percent to about 70 percent, preferably about 40 percent to about 60 percent, and has an anhydride content of at least 0.3 percent but less than 3 percent. Maleic anhydride is the preferred anhydride. When present, the anhydride-grafted rubber is used in an amount of about 5 to about 30 parts, preferably about 5 to about 15 parts, particularly preferably about 5 to about 12 parts, per hundred parts of the olefin thermoplastic The optional component (6) is an ethylene polymer grafted with an aliphatic β-unsaturated dicarboxylic acid anhydride, and having an anhydride content of about 1 percent to about 16 percent by weight, preferably about 2 percent to about 13 percent, especially preferably from about 3 percent to about 13 percent. Maleic anhydride is the preferred anhydride. The ethylene homopolymer is preferred. However, copolymers containing 10 percent or less of an alpha-olefin comonomer can also be used. The ethylene polymer preferably has a molecular weight Mn of from about 500 to about 5000, preferably from about 600 to about 2000, particularly preferably from about 600 to about 1000. When the component (6) is used, it is present in an amount of from about 5 to about 20 parts, preferably from about 5 to about 10 parts per hundred parts of the thermoplastic olefin, so long as at least 5 parts of the copolymer of polypropylene or propylene grafted with anhydride and 3 parts of the Oxidized polyethylene wax per hundred parts of the thermoplastic olefin are also present.

The composition of the present invention may also contain other conventional additives, for example, antioxidants; stabilizers, dilution oils such as paraffinic and naffenic oils; fillers such as CaCO3, talcum, carbon black, and zinc oxide, or flame retardants. If non-polymeric additives such as conductive carbon black or non-conductive are used, they are preferably added after the functionalized polymer has reacted with the polymers grafted with the anhydride. The additives may also be added as a dispersion in a polymer, preferably a polymer, preferably an olefin polymer. The stirring or melting of the components of the composition can be carried out in an open cylinder, in an internal mixer (Banbury or Haake mixers), or in single screw extrusion apparatus or twin screws. The compositions of this invention can be formed in any manner, such as, for example, by extrusion, compression molding, and thermoforming. Injection molding is preferred. They can also be co-extruded or co-injected molded with other polyolefin materials such as propylene homopolymers, graft copolymers and copolymers, ethylene homopolymers and copolymers, or thermoplastic olefins such as those described above. They can also be molded by coextrusion or co-injection with dynamically vulcanized elastomers based on olefin or thermoplastic elastomers compatible with the olefin such as styrene / butadiene copolymers. In order to create a more serious test for paint adhesion, specimens for the test were prepared using a pin gate mold instead of the fan gate mold that is typically used to mold the thermoplastic olefins. Durability depends on the thickness of the paint - the thicker the paint or film, the better the durability. In the following examples and comparison examples a paint layer with a film thickness of approximately .030 millimeter was used, which is a very serious test. A typical durability test used in the automotive industry also employs an upper layer that has a low coefficient of friction, which reduces the seriousness of the test. No top layer was used in the following examples and comparison examples. The samples for the test were prepared by dry mixing the ingredients and reactive mixing in a twin screw extrusion apparatus at a temperature of 232 ° C and granulating the resulting material.

The granules they were injection molded into discs that were painted with a thickness coating of .030 to .051 millimeter using DuPont 872 white paint and cured at 121 ° C for thirty minutes. A pattern of squares with each square of approximately a size of 6.35 mm was scratched on the painted disk at the opposite end of the disk gate area. Adhesive tape (3M 898) was pressed into the paint and peeled off to test the amount of paint removed or the adhesion of the paint. The percentage of failure was recorded as the percentage of the frames removed by the tape after a tensile stress. Durability was determined using a float wear gauge with a type C head assembly and a load of .454 kilogram. The painted disc was placed in an oven at 70 ° C for one hour, it was removed and placed on the wear meter platform by rubbing. The wear head was placed in contact with the painted surface and the disk was rotated for a specified number of cycles. The amount of paint removed from the entire circumference subtended by the wear head was recorded as a percentage of failure. The set of criteria for acceptable paint adhesion were from <; 50 percent failure in the disk gate area and < 10 percent in the area opposite the gate area after the first tensile stress, and from < 85 percent failure in the gate area and < 50 percent in the area opposite the gate after the fifth tensile stress. The criterion for satisfactory durability was < 50 percent failure after 100 cycles. In this specification, all parts and percentages are by weight unless otherwise specified.

Examples 1 to 4 and Comparative Examples 1 to 3 Examples 1 to 4 show the adhesion of the paint and durability of compositions containing a thermoplastic olefin (TPO), a polypropylene grafted with maleic anhydride (MA-g-PP), an oxidized polyethylene wax, and a finished polyethylene oxide with amine (ATPEO), with or without a polyolefin rubber grafted with maleic anhydride (MA-g-rubber). The effect of the melting point of the oxidized polyethylene wax was also demonstrated. The results are shown in Table 1. In Table 1, TPO 1 contained 55 percent propylene homopolymer, 3 percent semi-crystalline ethylene / propylene copolymer having a propylene content of -10 percent and which was insoluble in xylene at room temperature, 30 percent of amorphous ethylene / propylene copolymer rubber having an ethylene content of 50 percent and was soluble in xylene at room temperature, and 12 percent of the ethylene homopolymer that has a melt index of approximately 50 grams / 10 minutes. The MA-g-1 rubber was Exxelor VA-1803 an ethylene / propylene rubber containing 0.7 percent grafted maleic anhydride, which can be obtained commercially from Exxon Chemical Company. The MA-g-rubber 2 was Royaltuf 465A an ethylene / propylene / non-conjugated diene terpolymer rubber containing 0.4 percent grafted maleic anhydride having a Mooney viscosity (ML 1 + 4 at 125 ° C) of 60 and an ethylene / propylene ratio of 75/25, which can be obtained commercially from Uniroyal Chemical Company, Inc. MA-g-PP was Epolene E-43 a polypropylene wax modified with maleic anhydride, which is commercially available from Eastman Chemical Company . ATPEO was a monoamine-terminated polyethylene oxide, which can be obtained commercially from Huntsman Corporation. The antioxidant was Irganox B 225, a mixture of 1 part Irganox 1010 tetrakis [methylene (3, 5-di-tert-butyl-4-hydroxyhydrocinnamate) methane and 1 part Irgafos 168, an antioxidant of tris (2, 4- di-tert-butylphenyl) phosphite, which - it can be obtained commercially from CIBA Specialty Chemicals Company. Petrolite C-3500 oxidized polyethylene wax, Petrolite C-9500 oxidized polyethylene wax, and Petrolite E-2020 oxidized polyethylene wax were commercially available from Petrolite Corporation. The melting temperatures and other properties of the waxes are given in Table 2. In Table 2, the numbers in parentheses are calculated values.

Table 1 Ex. 1 Ex. 2 Ex. 3 Comp .1 Comp .2 Comp .3 TPO 1 100 100 100 100 100 100 MA-g-rubber 1 5 5 - 5 - 5 MA-G-rubber 2 5 5 - 5 - 5 MA-g-PP 10 10 10 10 1Q 10 Petr. C-3500 5 - 10 - - - Petr. C-9500 - 5 - - - - Pett. E-2020 10 5 ATPEO Antioxidant 0.2 0.2 0.2 0.2 0.2 0.2 Adhesion of the paint % Fail g / op g / op g / op g / op g / op g / op ler Effort 12/0 42/3 12/6 64/0 64/18 48/1. of Traction 3rd Effort 30/8 48/9 36/12 80/40 76/42 56/4 of Traction 5th Stress 46/36 70/25 50/36 94/65 94/66 84/6 of Traction Durability% of Failure cycles 0 0 0 25 -14 40 100 cycles 6 22 20 60 50 80 Table 2 Number Mn Viscosi- Density Acid Tempera- ture Index C ity Fusion at 149 ° C g / cm3 g / 10 min Fusion ° C AC 307 5-9 50,000 85,000 0.98 > 1,000 140 AC 325 25 6,000 4,400 0.99 > 2,000 136 Petr. C-8500 (8,000) (6,000) > 2,000 95 Petr. C-7500 15 (6,000) (4,000) > 3,000 97 Petr. C-3500 24 1,500 30 > 5,000 96 Petr. C-9500 31 (1,000) (20) > 5,000 94 Petr. E-2020 22 2,500 75 > 5,000 116 Pet. E-1040 40 (1,500) 25 > 5,000 106 Examples 1 and 2 show the improvement in. the adhesion of the paint and durability when the oxidized polyethylene wax is used together with TPO, MA-g-PP, MA-g- - rubber and the ATPEO. Comparison Example 1 does not contain an oxidized polyethylene wax. Examples 3 and 4 show that the oxidized waxes produce good adhesion to paint and durability without the MA-g-rubber. Examples 2 and 3 of Comparison show that not all oxidized polyethylene waxes are effective in the compositions of this invention.

Examples 5 to 7 and Comparative Examples 4 to 6 These examples and comparison examples show the effect of using oxidized polyethylene waxes with different melting temperatures in paint adhesion and durability. All formulations contain MA-g-rubbers, MA-g-PP, and ATPEO in addition to TPO. TPO 1, the MA-g-rubbers, the MA-g-PP, the antioxidant and ATPEO were the same as in Examples 1 to 4. The results are shown in Table 3. The melting temperatures and the other properties of the Waxes are provided in Table 2.

Table 3 Comp.4 Comp.5 Comp.6 Ex. 5 Ex. 6 Ex. 7 TPO 1 100 100 100 100 100 100 MA-g-rubber 1 5 5 - 5 - 5 MA-G-rubber 2 5 5 5 5 5 5 MA-g-PP 10 10 10 10 10 10 Petr. E-1040 - - 5 Petr. C-3500 - - - 10 - - Petr. C-7500 - - - - 5 - Petr. C-8500 - - - - - 5 AC 307 5 - - - - - AC 325 - 5 - - - - ATPEO 3 3 3 3 3 3 Antioxidant 0.2 0.2 0.2 0.2 0.2 0.2 - Table 3 (continued) Adhesion of the paint Fault% g / op g / op g / op g / op g / op g / pp ler Effort 80/80 90/99 18/12 6/0 0/0 36/0 of Traction 3rd effort 84/36 30/0 78/0 28/12 of traction 5th Effort S4 / 78 70/11 78/12 60/42 Traction Durability% of Failure cycles 90 95 0 0 .. s 0 100 cycles 98 98 0 0 0 0 Table 3 shows that waxes with melting temperatures of 116 ° C or higher, or an acid number of 40 or higher do not provide adequate adhesion to paint or durability (Examples 4 to 6 of Comparison).

Examples 8-9 and E comparis 7-9 Comparison These examples and comparison examples show the effect of using the oxidized polyethylene waxes with different melting temperatures in the compositions containing MA-g-PP and ATPEO in addition to TPO, but no MA-g-rubber. The TPO, MA-g-PP, ATPEO, and the antioxidant were the same as in Examples 1 to 4. The results are shown in Table 4. The melting temperatures and the other properties of the oxidized polyethylene waxes are shown in Table 2 Table 4 Comp. 7 Comp. 8 Comp. 9 Ex. 8 Ex TPO 1 100 100 100 100 100 MA-g-PP 10 10 10 10 10 Petr. E-1040 - - 10 - - Petr. C-7500 - - - 10 - Petr. C-8500 - - - - 10 AC 307 10 - - - - AC 325 - 10 - - - ATPEO 3 3 '3 3 3 Antioxidant 0.2 0.2 0.2 0.2 0.2 Adhesion of the paint Fault% g / op g / op g / op g / op g / op ler Effort 60/100 86/90 54/0 6/0 0/0 of Traction 3rd Effort 70/26 48/0 36/0 of Traction 5th Traction Effort 70/54 72/0 60/12 Durability % of Fail cycles 0 15 0 0 0 100 cycles 0 60 0 0 0 Table 4 shows that good adhesion and durability can be achieved if an oxidized polyethylene wax having a melting temperature lower than 116 ° C as well as an acid number less than 40 (Examples 8) is used. and 9).

Examples 10-12 and Comparison Examples 10-11 These examples and comparison examples show the effect of using an oxidized polyethylene wax in a thermoplastic olefin composition containing two heterophasic polyolefins, a metallocene rubber, MA-g-PP, and a functionalized polymer that reacts with the grafted polymers with MA, with or without MA-g-rubber. The compositions also contain talc and conductive carbon black as fillers or fillers. The results are shown in Table 5. In Table 5, the heterophasic polyolefin 1 contained 85 percent to 86 percent polypropylene and 14 percent to 15 percent of an amorphous ethylene / propylene copolymer, of which percent was ethylene and 43 percent was propylene and can be obtained commercially from Montell USA Inc. The heterophasic polyolefin 2 contained 86.4 percent polypropylene, 9.45 percent of an amorphous ethylene / propylene copolymer that was soluble in xylene at room temperature, Y - 4. 15 percent of a semicrystalline ethylene / propylene copolymer that was insoluble in xylene at room temperature, and which is commercially available from Montell USA Inc. MA-g-PP and MA-g-rubbers is described in Examples 1 to 4. Engage 8150 ethylene / octene copolymer rubber contains 25 percent octene and can be obtained commercially from DuPont-Elastomers. Polybutene terminated with hydroxy HPVM 2203 can be obtained commercially from Shell Chemical Company. The carbon black concentrate was Colonial 3300 carbon black, a 50 percent concentrate of N-100 black in low density polyethylene, commercially available from Colonial Rubber Company. The talc was Tallar Polar 9603, which can be obtained commercially from Polar Minerals. The antioxidant and ATPEO were the same as in Examples 1 to 4.

Table 5 Comp.10 Comp.11 Ex. 10 Ex. 11 Ex. 12 Polyolefin Het. 1 50 50 50 50 50 Polyolefin Het. 2 30 30 30 30 30 Engage 8150 20 20 20 20 20 MA-g-PP 10 10 10 10 10 MA-g-rubber 1 5 5 5 - - MA-g-rubber 2 5 5 5 - - Petr. C-3500 - - 5 - - Petr. C-9500 - - - 5 10 Polybutene Hydrox.

ATPEO 3 4 3 3 3 Talcum 2 2 2 2 2 Carbon Black conc.

Antioxidant 0.2 0.2 0.2 0.2 0.2 Adhesion of the paint Fault% g / op g / op g / op g / op g / op ler Effort 100/100 100/100 46/8 40/0 32/0 of Traction 3rd Effort 60/20 66/20 42/16 of Traction 5th Effort 80/30 80/48 62/42 of Traction Durability% of Failure . 100 100 cycles 0 0 0 100 cycles 100 100 0 18 12 Comparison examples 10 and 11 without the waxes showed very poor adhesion to paint and durability. Using the waxes with MA-g-PP, with or without MA-g-rubber, good adhesion and durability was provided. Examples 11 and 12 show that a combination of an ATPEO and hydroxylated polybutene can be used as the functionalized polymer component of the composition.

Examples 13-17 and Comparison Examples 12-14 These examples and comparison examples show the effect of using an oxidized polyethylene wax in compositions containing two different thermoplastic olefins, MA-g-PP or MA-gE / P, and a functionalized polymer that reacts with the grafted copolymers with MA, with or without an MA-g-rubber. The results are shown in Cuaro 6. In Table 6, TPO 2 contained 68 percent of an ethylene / propylene copolymer having an ethylene content of 2.6 percent, 2 percent of an ethylene / propylene semi-copolymer. -crystalline that was insoluble in xylene at room temperature, and 30 percent of an amorphous ethylene / propylene copolymer that was soluble in xylene at room temperature. TPO 1, MA-g-PP and MA-g-rubber 1 were described in Examples 1 to 4. Ma-gE / P was ACX 597, an ethylene / propylene copolymer grafted with maleic anhydride which can be obtained commercially from Allied Signal Inc. In Examples 16 and 17 and Comparison Examples 13 and 14, MA-gE / P was added in the form of an adduct of 10/3 or 10/4 with ATPEO respectively. The ATPEO and the antioxidant were the same as in Examples 1 to 4.

Table 6 Comp. 12 Comp. 13 Comp. 14 TPO 1 100 100 TP02 100 - MA-g-rubber 1 10 - MA-g-PP 10 - MA-g-E / P - - /3 Aduct 13 - /4 Aduct - 14 Petr. C-9500 - - - Petr. C-3500 - - - ATPJEO 3 - - Antioxidant 0.2 0.2 0.2 Adhesion of the paint Fault% g / op g / op g / op ler Effort 70/18 85/62 84/58 Traction 3rd Effort 100/32 100/82 100/74 of Traction 5th Stress / 100 ../100 Traction Durability% of Failure cycles 70 100 100 100 cycles 80 100 100 Table 6 (continued) Ex. 13 Ex. 14 Ex. 15 Ex. 16 Ex. 17 TPO 1 - 100 100 100 100 TP02 100 - - - - MA-g-rubber 1 10 10 - .10 10 MA-g-PP 10 - - - - MA-g-E / P - 10 10 - - - /3 Aduct - - - 13 - /4 Adducts - - - - 14 Petr. C-9 500 - - 10 - - Petr. C-3500 5 5 - 5 5 ATPEO 3 3 3"- Antioxidant 0.2 0.2 0.2 0.2 0.2 Adhesion of paint% of Fault g / op g / op g / op g / op g / op ler Effort 36/0 42/8 24/6 42/8 36/6 Traction 3rd Effort 54/9 48/36 48/24 54/36 42/12 of Traction 5th Stress 78/24 82/42 82/48 82/42 56/36 of Traction Durability% of Failure cycles 0 10 16 32 45 100 cycles 22 35 30 38 42 Examples 12-14 of Comparison without the waxes showed very poor adhesion to paint and durability. Using the waxes with MA-g-PP or MA-g-E / P, with or without the MA-g-rubber, good adhesion and durability was provided.

Examples 18-22 and Comparative Example 15 These examples and the comparison example show the effect of using an oxidized polyethylene wax in a thermoplastic olefin composition containing MA-g-PP, a functionalized polymer that reacts with the grafted polymers with MA and talc as a filler or filler, with or without MA-g-rubber. The results are shown in Table 7. In Table 7, the polybutadiene terminated with hydroxy was the polybutadiene terminated with hydroxy PolyBD R-45HT, which can be obtained commercially from Elf Atochem. The TPO 1, MA-g-rubbers and MA-g-PP are described in Examples 1 to 4. The talc was the talc Jetfill 700C, which can be obtained commercially from Luzenac America. Polybutene and talc terminated with hydroxy were described in Examples 10 to 12. The antioxidant and ATPEO were the same as in the previous examples.

Table 7 Comp.15 Ex.18 Ex.19 Ex.20 Ex.21 Ex.22 TPO 1 100 100 100 100 100 100 MA-g-rubber 1 5 5 5 5 - - MA-g-PP 10 10 10 10 10 10 MA-g-rubber 2 5 Petr. C-9500 - - - - 10 10 Petr. C-3500 - 5 10 10 - - Talc 10 10 10 10 20 10 Polybutadiene Hydr.

Polybutene Hydr. 2 ATPEO 3 3 3 - 3 3 Antioxidant 0.2 0.2 0.2 0.2 0.2 0.2 Adhesion of the paint - 4 - % Fail g / op g / op g / op g / op g / op g / op ler Effort 98/48 3/0 0/0 0/0 1/0 0/3 of Traction 3rd Effort ../100 26/0 0/6 9/0 1/0 24/16 Traction ° Effort 54/3 6/14 16/6 1/0 42/42 of Traction Durability% of Failure cycles 95 0 0 0 0 0 100 cycles 95 0 0 0 0 0 Comparison Example 15 without wax showed very poor adhesion to paint and durability. Using a wax with MA-g-PP, with or without an MA-g-rubber, good adhesion and durability was provided (Examples 18-22). Examples 21 and 22 showed that a combination of ATPEO and polybutene terminated with hydroxy or hydroxy-terminated polybutadiene can be used as the functionalized polymer component of the composition.

Examples 23-29 and Comparison Example 16 These examples and the comparison example show the effect of using an oxidized polyethylene wax in a thermoplastic olefin composition containing MA-g-PP, an ATPEO and a hydroxy-terminated ethylene / ethylene oxide copolymer, with or without MA -g-rubber. Some of the compositions contain talc as a filler or filler and all contain either conductive carbon black or non-conductive. The results are shown in Table 8. In Table 8, the carbon black was the same as in Examples 10 to 12. Printex XE-2 conductive carbon black can be obtained commercially from Degussa Corporation. Conductive carbon blacks Vulcan XC-72 and Vulcan PA-90 can be obtained commercially from Cabot Corporation. In Examples 27 and 29, the conductive carbon black Printex XE-2 was added as a 23 percent dispersion in granular TPO 1 containing 0.2 pph the antioxidant B 225. The amount of carbon black in the dispersion has been enclosed in brackets. In Example 28, conductive carbon black Vulcan XC-72 was added as a 33 percent dispersion in granular TPO 1 containing 0.2 pph of antioxidant B 225. The amount of carbon black in the dispersion is enclosed in parentheses . (TPO 1) in Examples 27 and 29 indicates the amount of TPOl that was used as the matrix for the dispersions of the conductive carbon blacks. E / EO 1 terminated with hydroxy was a copolymer of ethylene oxide / terminated with hydroxy / ethylene Unithox 480 having a molecular weight Mn of 2250 and a hydroxyl number of 22, and can be obtained commercially from Petrolite Corporation. TPO 1, MA-g-rubbers, and MA-g-PP are described in Examples 1-4. The antioxidant and the ATPEO were the same as in the previous examples. The talc was the same as in Examples 18 to 22.

Example 8 Comp. 1 6 Ex. 23 Ex. 24 Ex. 25 PO 1 100 100 100 100 (TPO 1) - - - MA-g-rubber 1 5 10 10 10 - MA-g-PP 10 10 10 1J0 MA-g-rubber 2 5 - - - Petr. C-3500 5 5 10 Talc 10 10 - Carbon Black - 2 - - Printex XE-2 2 - 2 - Vulcan XC-72 - - - Vulcan PA-90 - - - XE-2 Scattered - - - XC-72 Disperso - - - - ATPEO 3 3 3 3 E / EO 1 Hidrox. - - - - Antioxidant 0.2 0.2 0.2 0.2 Adhesion of the paint Fault% g / op g / op g / op g / op ler Effort 100/48 0/0 0/0 0/0 of Traction 3rd Effort, / 100 9/0 12/6 0/0 of Traction ° Effort 20/6 23/32 6/2 of Traction Durability% of Failure cycles 40 100 cycles 50 30 Example 8 (continued) Ex. 26 Ex. 27 Ex. 27 Ex. 29 TPO 1 100 74 72 74 (TPO 1) - (26) (28) (26) MA-g-rubber 1 10 10 12"" 10 MA-g-PP 10 10 12 10 MA-g-rubber 2 - - - - - - Petr. C-3500 10 10 - 10 Talcum - - 20 Carbon Black - - - - _ Printex XE-2 - - - Vulcan XC-72 - - - Vulcan PA-90 10 - - - XE-2 Scattered - (6) - (6) XC-72 Scattered - - - (14) - ATPEO 3 3.6 3 E / EO 1 Hidrox. 3 - - - Antioxidant 0.2 0.2 0.24 0.2" Adhesion of the paint Fault% g / op g / op g / op g / op ler Effort 18/0 8/6 18/0 0/0 Traction - - 3rd Effort 24/0 50/12 48/0 0/16 of Traction 5th Stress 42/4 74/30 76/18 15/18 Traction Durability% of Failure cycles 100 cycles 10 20 40 Example 16 Comparison without J Wax showed very poor paint adhesion and durability. Using the wax with MA-g-PP, the functionalized polymer, and a filler or filler, with or without the rubber grafted with MA, provided good adhesion and durability. Example 26 showed that the d-ethylene copolymer terminated with hydroxy / ethylene oxide can be used as the functionalized polymer without the use of ATPEO.

Examples 30-37 Examples 30 to 34 show the good adhesion of the paint and durability that can be obtained from - compositions containing a TPO including two heterophasic polyolefins and an ethylene / octene copolymer rubber, as well as MA-g-PP, MA-g-rubber, an oxidized polyethylene wax, either ATPEO or an E / EO copolymer terminated with hydroxy as the functionalized polymer and, optionally, conductive carbon black as a filler or filler. The results are shown in Table 9. Good paint adhesion and durability of compositions containing TPO 1, MA-g-PP, MA-g-rubber, an oxidized polyethylene wax, a hydroxy-terminated polyethylene copolymer were also obtained. or of E / EO terminated with hydroxy as the functionalized polymer and, optionally, talc as a filler or filler (Examples 35 to 37). The results are given in Table 9. In Examples 32-34, the conductive carbon black Vulcan XC-72 was added as a 33 percent dispersion in the granulated TPO 1 containing 0.2 pph of the antioxidant B 225. The amount of carbon black in the dispersion is enclosed in parentheses (TPO 1) in Examples 32-34 which is enclosed in parentheses. (TPO 1) in Examples 32-34 indicates the amount of TPO 1 used as the matrix for the conductive carbon black dispersions.

- - The heterophasic polyolefins 1 and 2 are described in Examples 10-12. TPO 1, MA-g-PP, and MA-g-rubber 1 are described in Examples 1 to 4. The conductive carbon blacks were described in Examples 23-29. The antioxidant and ATPEO were the same as in the previous examples. The talc was the same as in Examples 18-22. E / EO 1 terminated with hydroxy is described in Examples 23-29. E / EO 2 terminated with hydroxy was a Unithox 580 ethylene oxide / hydroxy terminated ethylene copolymer having a molecular weight Mn of 2400 and a hydroxyl number of 18, which is commercially available from Petrolite Corporation. The hydroxy-terminated polyethylene was polyethylene terminated with hydroxy Unilin 425, which can be obtained commercially from Petrolite Corporation.

Table 9 Ex. 30 Ex. 31 Ex. 32 Ex. 33 PO 1 ; TPO i) (23.3) (23.3¡ Polyolefin 1 Het. 50 50 38.3 38.3 Polyolefin 1 Het. 30 30 23.3 23.3 Engage 8150 20 20 15.1 15.1 MA-g-PP 15 15 11.5 17.25 MA-g-rubber 1 15 15 11.5 17.25 Petr. C-3500 10 10 11.5 11.5 Vulcan XC-72 - 10 - - XC-72 Scattered - - (10) (10) E / EO 1 Hidrox. - - - - E / EO 2 Hidrox. - - - - PE Hidrox. - - - - Talcum powder - - - - ATPEO 4 4 3 4 Antioxidant 0.2 0.2 0.2 0.2 Adhesion of paint% of Fault g / op g / op g / op g / op ler Effort 22/0 22/0 0/0 0/0 of traction 3rd Effort 38.0 50/12 0/0 0/0 of Traction 5th Effort 64/12 74/28 0/0 0/0 of Traction Durability% of Failure cycles 0 0 0 0 100 cycles 10 0 0 0 Table 9 (continued) Ex. 34 Ex. 35 Ex. 36 Ex. 37 PO 1 - 100 100 100 (TPO 1) (23.3) - - - Polyolefin 1 Het. 38.3 - - - - - Polyolefin 1 Het. 23.3 - - - Engage 8150 15.1 - - - MA-g-PP 17.25 10 10 10 MA-g-rubber 1 17.25 5 10 5 Petr. C-3500 11.25 10 10 10 Vulcan XC-72 - - - - XC-72 Scattered (10) - - - E / EO 1 Hidrox. 4 -- - - E / EO 2 Hidrox. - 3 - 3 PE Hidrox. -- -- 3 - Talcum - - - 20 ATPEO - - - - Antioxidant 0.2 0.2 0.2 0.2 Adhesion of paint% of Fault g / op g / op g / op g / op ler Effort 0/0 0/0 18/0 0/3 of Traction 3rd Effort 0/0 45/8 36/6 0/18 Traction 5th Strain 0/0 78/40 42/18 10/38 of Traction Durability% of Failure cycles 0 0 0 0 100 cycles 2 0 0 0 Examples 38-40 and Comparison Examples 17-1 i These examples and comparison examples show the effect of using an oxidized polyethylene wax in a thermoplastic olefin composition containing MA-g-PP and a functionalized polymer that reacts with the maleic anhydride groups of the grafted polymers with or without MA -g-rubber. The results are given in Table 10.

In Table 10, TPO 3 was a mixture of 40 parts of crystalline propylene homopolymer using a melt flow rate of -12 grams / minute and soluble xylene at room temperature of 4 percent which can be obtained commercially from Montell USA Inc.; 60 parts of an olefin polymer composition containing 68 weight percent of an ethylene / 1-butene copolymer of which 82 percent was ethylene, having xylene solubles at room temperature of 35 percent, dispersed at 32 per cent. one hundred percent of a propylene homopolymer matrix having xylene solubles at room temperature of 2.3 percent and 0.2 part of the Irganox B 225 antioxidant per hundred parts of the polymer. The MA-g-rubber 1 and MA-g-PP are described in Examples 1 to 4. The E / EO 2 terminated with hydroxy 2 is described in Examples 30-37. The antioxidant and ATPEO were the same as in the previous examples.

Table 10 Comp.17 Comp.18 Ex. 3í Ex. 39 Ex. 40 TPO 3 100 100 100 100 100 MA-g-rubber 1 10 15 15 MA-g-PP 10 20 10 15 15 Petr. C-3500 - - 10 10 10 ATPEO 3 4 3 4 - E / EO 2 Hidrox. - - - - 4 Antioxidant 0.2 0.2 0.2 0.2 0.2 Adhesion of the paint Fault% g / op g / op g / op g / op g / op ler Effort 72/12 85/0 32/6 12/0 18/0 of Traction 3rd Effort S2 / 32 100/24 55/24 35/12 24/6 Traction 5th Stress 100/56 68/42 50/24 42/24 Traction Durability% Failure 25 cycles 90 100 0 - 12 18 100 cycles 95"100 24 32 36 Comparison examples 17 and 18 without wax showed very good paint adhesion and durability.Using a wax with MA-g-PP and MA-g-rubber provided good adhesion and durability. 40 shows that an ethylene copolymer terminated with hydroxy / ethylene oxide can be used as the component of the functionalized polymer of the composition without ATPEO.

Examples 41-45 and Comparison Examples 19-20 These examples and comparison examples show the effect of using an oxidized polyethylene wax in two different thermoplastic olefins containing MA-g-PP, ATPEO or a copolymer of ethylene-terminated ethylene / ethylene oxide as the functionalized polymer, and, optionally, MA-g-rubber. One of the compositions also contains talc as a filler or filler. The results are shown in Table 11. In Table 11, TPO was either (1) a mixture of a propylene homopolymer having a melt flow rate of -5 decigrams per minute and an isotactic index greater than 90, which can be obtained commercially from Montell USA Inc., and Dutral 4038, an ethylene / propylene / ethylidene norbornene terpolymer rubber containing 4 percent ethylidene norbornene, can - - obtained commercially from Enichem America Inc., or (2) heterophasic polyolefin 3, which contained (a) 35 percent of a propylene homopolymer having an isotactic index defined as the xylene insoluble fraction of 97.5, (b) 6.9 percent of a semi-crystalline ethylene-propylene copolymer that was insoluble in xylene at room temperature, and (c) 58.1 percent of an amorphous ethylene-propylene copolymer rubber that was soluble in xylene at room temperature. MA-g-PP and MA-g-rubber 1 is described in Examples 1-4. E / EO 2 hydroxy-terminated with hydroxy is described in Examples 30-37. The antioxidant and ATPEO were the same as in the previous examples. The talc was the same as in Examples 18-22.

Example 11 Comp. Comp. Ex. 41 Ex. 42 Ex. 43 Ex. 44 Ex. 45 19 20 Polypropylene 70 - 70 - - - - Dutral 4038 30 - 30 - - - 30 Polyolefin Het.3 - 100 - 100 100 100 - MA-g-Rubber 1 - - 10 10 10 10 10 MA-g-PP 10 10 10 10 10 10 10 Petr. C-3500 10 10 10 10 Talc 10 ATPEO 3 3 3 3 3 - - E / EO 2 Hidrox. 3 3 Antioxidant 0.2 0.2 0.2 0.2 0.2 0.2 0.2 Adhesion of the paint % Fault g / op g / op g / op g / op g / op g / op g / op ler Effort 78/24 46/12 26/6 12/0 6/0 12/3 0/0 of Traction 3rd Effort 100/32 68/28 38/6 22/6 18/0 16/6 12/0 of Traction 5th Effort - / 68 100/48 56/18 36/24 24/12 18/12 36/12 of Traction Durability% of Failure cycles 42 24 0 8 0 0 0 100 cycles 76 68 15 24 8 6 0 Examples ~ 19 and 20 of comparison without wax showed very poor adhesion to paint and durability. Using a wax with MA-g-PP and MA-g-rubber provided good adhesion and durability. Examples 44 and 45 showed the ethylene-terminated ethylene copolymer / ethylene oxide can be used as the functionalized polymer instead of ATPEO.

Examples 46-51 __ -_-: -__. - These examples show the effect of using an oxidized polyethylene wax in a thermoplastic olefin composition containing MA-g-PP, polyethylene grafted with maleic anhydride and a functionalized polymer that reacts with the grafted polymers of the grafted polymers, with and without MA-g-rubber. The results are given in Table 12. In Table 12, Ceramer 67 a polyethylene grafted with maleic anhydride had a molecular weight Mn of 655, a "maleic anhydride content of 3.8 percent and a melting temperature of 97 ° C, and can be obtained commercially from Peiralite Corporation - Ceramer 1608, polyethylene grafted with maleic anhydride had a molecular weight Mn of 700, a maleic anhydride content of 12.7 weight percent, and a melting temperature of 121 ° C and can be obtained commercially available from Petrolite Corporation, TPO 1, MA-g-rubber, and MA-g-PP are described in Examples 1-4, E / EO 1 terminated with hydroxy as described in Examples 23-29. granulated form and contained 0.2 pph of the antioxidant Irganox B-225. The antioxidant of ATPEO was the same as the previous examples.

Table 12 Ex. 46 Ex. 47 Ej - 48 Ex. 49 Ex. 50 Ex. 51 TPO 1 100 100 100 100 100 100 MA-g-rubber 1 10 10 - - 10 - MA.-g-PP 10 10 10 10 10 10 Petr. C-3500 10 10 10 10 10 10 Ceramer 67 10 - 10 - 10 - Ceramer 1608 - 10 - 10 - 10 ATPEO E / EO 1 Hydr. Antioxidant 0.2 0.2 0.2 0.2 0.2 0.2 - - Adhesion of the paint Fall% g / op g / op g / op g / op g / op g / op ler Pulling effort 0/0 0/0 0/0 0/0 0/0 0/0 3rd Effort 12/0 6/0 S / 0 12/0 0/0 6/0 of Traction ° Effort 18/0 19/0 12/8 12/0 12/0 24/0 of Traction Durability% of Failure cycles 0 0 0 0 0 0 100 cycles 0 0 4 8 0 0 Other features, advantages and embodiments of the invention that are disclosed herein will be readily apparent to those skilled in the art after reading the foregoing discussion. In this regard, even when the specific embodiments of the invention have been described in considerable detail, variations and modifications of these embodiments may be made without deviating from the spirit and scope of the invention as described and claimed.

Claims (8)

1. - CLAIMS: 1. A composition comprising by weight: (1) 100 parts of a thermoplastic olefin comprising an olefin polymer having an isotactic index of at least 80 and an olefin polymer rubber. The thermoplastic olefin has a rubber content of at least 20 percent; (2) from about 5 to about 20 parts per 100 parts of the thermoplastic olefin of a propylene homopolymer or a copolymer of propylene with ethylene or a alpha-olefin of 4 to 8 carbon atoms having an ethylene or alpha- olefin from about 0.5 percent to about 20 percent, grafted with an aliphatic α, β-unsaturated dicarboxylic acid anhydride and having an anhydride content of from about 2 percent to about 5 percent; (3) from about 3 to about 20 parts per 100 parts of the thermoplastic olefin of an oxidized polyethylene wax, having a melting temperature of less than 116 ° C and an acid number of less than 40; (4) a functionalized polymer that is reactive with the anhydride groups of the grafted polymers, which is selected from the group consisting of: (a) from about 2 to about 6 parts per 100 parts of the thermoplastic olefin of a polyalkylene glycol terminated with amine; (b) from about 2 to about 6 parts per 100 parts of the thermoplastic olefin of a polyolefin terminated with hydroxy; (c) from about 2 to about 6 parts per 100 parts of the thermoplastic olefin of a hydroxy-terminated polybutadiene; (d) from about 2 to about 8 parts per 100 parts of the thermoplastic olefin of an olefin copolymer terminated with hydroxy / alkylene oxide; (e) from about 2 to about 8 parts per 100 parts of the thermoplastic olefin of a hydroxy-terminated polyalkylene oxide; (f) from about 2 to about 8 parts per 100 parts of the thermoplastic olefin of a methoxy-terminated polyalkylene oxide; (g) from about 2 to about 8 parts per 100 parts of the thermoplastic olefin of an amine-terminated olefin / alkylene oxide copolymer; and (h) mixtures thereof; (5) optionally, from about 5 to about 30 parts per 100 parts of the thermoplastic olefin of a polyolefin rubber grafted with an aliphatic a.-unsaturated dicarboxylic acid anhydride, having an anhydride content of at least 0.3 percent, but less than 3 percent and comprising an ethylene polymer and an alpha-olefin of 3 to 8 carbon atoms, optionally containing from about 0.5 percent to about 10 percent of a diene, containing from about 30 percent to about 70 percent ethylene; and (6) optionally, from about 5 to about 20 parts per 100 parts of the thermoplastic olefin of an ethylene polymer grafted with an aliphatic α, β-unsaturated dicarboxylic acid anhydride, having an anhydride content of about 1 per cent. one hundred to about 16 percent, and a molecular weight Mn of about 500 to about 5,000, as long as at least 5 parts of polypropylene grafted with anhydride or propylene copolymer and 3 parts of oxidized polyethylene wax for 100 parts of the thermoplastic olefin are also present. The composition of claim 1, wherein the thermoplastic olefin is a composition comprising by weight: (a) from about 10 percent to about 60 percent of a propylene homopolymer having an isotactic index greater than 90 or crystalline propylene copolymer with ethylene and / or an alpha-olefin of 4 to 8 carbon atoms having a propylene content greater than 85 percent, and an isotactic index greater than 85; (b) from about 30 percent to about 60 percent of an amorphous ethylene-propylene or ethylene-butene copolymer, optionally containing from about 1 percent to about 10 percent of a diene, which is soluble in xylene to room temperature and has an ethylene content of about 30 percent to about 70 percent; (c) from about 2 percent to about 20 percent, of a semi-crystalline ethylene-propylene or ethylene-butene copolymer which is soluble in xylene at room temperature and which has an ethylene content greater than 75 percent, but less than 92 percent; and (d) from about 5 percent to about 20 percent, of an ethylene polymer having a density of 0.91 to 0.96 gram per cubic centimeter, and a melt index of 0.1 to 100 grams per 10 minutes. The composition of claim 1, wherein the thermoplastic resin is a composition comprising, by weight: (a) from about 20 percent to about 70 percent of a crystalline propylene homopolymer having an isotactic index greater than 90 , a copolymer of crystalline propylene with ethylene and / or an alpha-olefin of 4 to 8 carbon atoms having a propylene content greater than 85 percent, and an isotactic index greater than 85; (b) from about 20 percent to about 75 percent, of an amorphous ethylene copolymer, which is selected from the group consisting of (i) ethylene / propylene, (ii) ethylene / buten-1, (iii) ethylene / octen-1, and (iv) mixtures thereof, optionally containing from about 1 percent to about 10 percent of a diene, which is xylene soluble at room temperature and has a content of - ethylene from about 30 percent to about 70 percent; and (c) from about 2 percent to about 30 percent, of a semi-crystalline ethylene copolymer selected from the group consisting of (i) ethylene / propylene, (ii) ethylene / buten-1, (iii) ethylene / octen-1, and (iv) mixtures thereof, which is xylene insoluble at room temperature and has an ethylene content greater than 90 percent; The composition of claim 1, wherein the thermoplastic olefin is a composition comprising by weight: (a) at least one heterophasic polyolefin composition comprising: (i) from about 90 percent to about 55 percent of a propylene polymer material which is selected from the group consisting of a propylene homopolymer having an isotactic index greater than 90, and a copolymer of crystalline propylene and an alpha-olefin of the formula CH 2 = CHR, wherein R is H or alkyl of 2 to 6 carbon atoms, the alpha-olefin being less than 10 percent of the copolymer, and (ii) from about 10 percent to about 45 percent of an elastomeric copolymer of propylene and an alpha-olefin of the form CH2 = CHR, in - - where R is H or alkyl of 2 to 6 carbon atoms, the alpha-olefin is from about 50 percent to about 70 percent of the elastomeric copolymer, and from about 10 percent to about 40 percent of the elastomeric copolymer, being insoluble in xylene at room temperature, and (b) from about 5 to about 50 parts per hundred parts of (a) an elastomeric ethylene copolymer and an alpha-olefin of 3 to 8 carbon atoms which is made with a metallocene catalyst . The composition of claim 1, wherein the texmoplastic olefin is a composition comprising, by weight: (a) from about 30 percent to about 50 percent of a propylene polymer having an isotactic index greater than 90 , and (b) from about 70 percent to about 50 percent of an olefin polymer composition comprising: (i) from about 25 percent to about 50 percent of a crystalline propylene homopolymer with a solubility in xylene to room temperature, less than or equal to 4 percent, or a copolymer of crystalline propylene with ethylene or a alpha-olefin of 4 to 8 carbon atoms having an ethylene or alpha-olefin content of about 0.5 percent to about 3 percent, and a solubility in xylene at room temperature of less than or equal to 4 percent, and (ii) from about 50 percent to about 75 percent of a copolymer of amorphous ethylene and an alpha-olefin of 4 to 8 carbon atoms, wherein the alpha-olefin content is from about 10 percent to about 20 percent, and the copolymer is from about 10 percent to about 40 percent soluble in xylene at room temperature. The composition of claim 1, wherein the thermoplastic olefin is a composition comprising by weight: (a) from about 80 percent to about 30 percent, a propylene homopolymer having an isotactic index greater than 90, and (b) from about 20 percent to about 70 percent of an elastomeric ethylene copolymer and an alpha-olefin of 3 to 8 carbon atoms, optionally containing from about 1 percent to about 10 percent of a diene, which has an ethylene content of about 30 percent to about 70 percent. - 7. The composition of claim 1, wherein the α, β-unsaturated aliphatic dicarboxylic acid anhydride is maleic anhydride. The composition of claim 1, wherein the functionalized polymer is selected from the group consisting of (a) polyethylene oxide terminated with amine, (b) polyethylene oxide terminated with hydroxy, and (c) a finished ethylene copolymer with hydroxy / ethylene oxide.