BR112012007268A2 - polymeric composition and coated conductor - Google Patents

Abstract

POLYMERIC COMPOSITION AND COATED CONDUCTOR The present specification is directed to a polymeric composition containing a vinyl chloride resin and an epoxidated fatty acid ether. The polymeric composition also includes a heat stabilizing composition. The heat stabilizing composition including a first metal salt, a second metal salt and a B-diacetone. The epoxidated fatty acid ester is the primary plasticizer, or the only one, in the polymeric composition. The present polymeric composition has advantages in application as a coating for wires and cables.

Description

"POLYMERIC COMPOSITION AND COATED CONDUCTOR" Background Plasticizers are compounds or mixtures of compounds

· Which are added to polymeric resins to impart flexibility and softness.

The diesters of 'phthalic acid (also known as "phthalates") are plasticizers known in many flexible polymeric products, such as polymeric products formed from polyvinyl chloride (PVC) and other vinyl polymers.

Phthalate plasticizers have often been under intense scrutiny by public interest groups that are concerned about the negative environmental impact of phthalates and the potential side effects on the health of humans (especially children) exposed to phthalates.

Epoxidized vegetable oils (such as epoxidized soybean oil, ESO), are known as effective substitutes for phthalic acid diesters, as co-plasticizers and co-stabilizers for vinyl chloride resins, such as polyvinyl chloride ( PVC). Epoxidized vegetable oil plasticizers are conventionally used only in small proportions (typically not more than 15% by weight) in a polymeric matrix since the presence of a large amount (greater than 15% by weight) tends to result in exudation ("ejection"). Vegetable oils

Epoxidates also tend to degrade at elevated temperatures.

Said degradation is "''" 30 problematic when it induces the polymer to become brittle and discolored during heat aging.

There is a need for an epoxidized fatty acid ester that does not exude when applied as a plasticizer to the polymeric composition.

There is still a need for polymeric compositions with an epoxidized fatty acid ester plasticizer that are ejection free and also thermally stable.

Summary The present invention provides a polymeric composition composed of a polyvinyl chloride resin, an epoxidized fatty acid ester, and a heat stabilizing composition.

A heat stabilizing composition reduces / eliminates ejection and thermally stabilizes the polymeric composition.

In particular, the heat stabilizing composition stabilizes the polymeric composition during extrusion and / or heat aging by preventing the decomposition of the fatty acid ester.

The present invention provides a polymeric composition.

In one embodiment, a polymeric composition is provided and includes a vinyl chloride resin, an epoxidized fatty acid ester, and a heat stabilizing composition.

The heat stabilizing composition includes a first metal salt, a second metal salt, and a | 3-diacetone.

The present description provides a coated conductor.

In one embodiment, a coated conductor is provided and includes a conductor and a coating on the conductor.

The coating includes a polymer composition comprising (i) a vinyl chloride resin, (ii) an epoxidized fatty acid ester, and (iii) a heat stabilizing composition.

The heat stabilizing composition includes a first metal salt, a second metal salt, and a β-diacetone.

An advantage of the present description is a biological based plasticizer resulting in a reduced curve ejection, or without any ejection, when used in polymeric compositions.

An advantage of the present description is a plasticizer based on a biological and / or phthalate-free base.

An advantage of the present description is a biologically based plasticizer that reduces greenhouse gases.

An advantage of the present description is a biological based plasticizer that enables the user to obtain LEED credits.

An advantage of the present description is a biological based plasticizer that enables the user to obtain carbon credits.

An advantage of the present description is a coating for application on wires and cables that is phthalate free and / or lead free.

An advantage of the present description is a phthalate-free, biologically based plasticizer that produces little, if any, curved ejection when used in a polymeric composition that is applied as a wire / cable coating.

An advantage of the present description is a polymeric composition containing an epoxidized fatty acid ester as the primary plasticizer.

An advantage of the present description is a polymeric composition containing an epoxidized fatty acid ester as a single plasticizer.

An advantage of the present invention is the provision of a coating for application to wires and cables that contains an epoxidized fatty acid ester as the primary plasticizer.

An advantage of the present invention is the provision of a coating for wire and cable applications that contains an epoxidized fatty acid ester as a single pesticide.

Detailed description of the invention The present invention provides a polymeric composition.

The polymeric composition includes vinyl chloride resin, an epoxidized fatty acid ester, and a heat stabilizing composition.

The heat stabilizing composition contains a first metal salt, a second metal salt, and a | 3-diacetone.

A "vinyl chloride resin", as used here, is a polymer with repeating vinyl groups with at least one hydrogen replaced with a chloride group.

The vinyl chloride resin can be prepared using a non-limiting procedure such as bulk polymerization, solution polymerization, suspension polymerization, and emulsion polymerization.

Non-limiting examples of suitable vinyl chloride resins include polyvinyl chloride, chlorinated polyvinyl chloride, polyvinylidene chloride, chlorinated polyethylene, vinyl acetate-vinyl chloride copolymer, ethylene-vinyl chloride copolymer, propylene-copolymer copolymer vinyl chloride, styrene-vinyl chloride copolymer, isobutylene-vinyl chloride copolymer, vinylidene chloride-vinyl chloride copolymer, maleic anhydride-vinyl-chloride terpolymer, acrylonitrile-styrene-vinyl chloride copolymer , butadiene-vinyl chloride copolymer, isoprene-vinyl chloride copolymer, chlorinated propylene-vinyl chloride copolymer, vinyl chloride acetate terpolymer, vinyl vinyl chloride, vinylene chloride copolymer, vinyl chloride copolymer methacrylate-vinyl chloride, acrylonitrile-vinyl chloride copolymer, vinyl ether-vinyl chloride copolymers, and mixtures thereof, as well as combinations of block copolymers and graft copolymers with chlorine-free synthetic resins, such as a styrene-acrylonitrile copolymer, a styrene-butadiene-acrylonitrile copolymer, a vinyl-styrene acetate copolymer, a copolymer of ethylene-ethyl (meth) acrylate, and a polyester.

The polymeric composition contains vinyl chloride resin in an amount of about 10, or 15, or 20, or 25, or 30, or 35, or 40% by weight at about 90, or 85, or 80, or 75 , or 70, or 65, or 60% by weight.

The weight percentage is based on the total weight of the polymeric composition.

In one embodiment, the vinyl chloride resin is polyvinyl chloride.

Epoxidated fatty acid ester (EFA): The polymeric composition includes an epoxidated fatty acid ester.

The polymeric composition can contain one, two, or three or more esters of epoxidized fatty acid.

The term "epoxidated fatty acid ester", (or "EFA") as used herein, is a compound with at least a portion of fatty acid that contains at least one epoxide group.

An "epoxide group" is a three-membered cyclic ether (also called oxirane or an alkylene oxide) in which an oxygen atom is attached to each of the two carbon atoms that are already attached to each other.

Non-limiting examples of suitable epoxidized fatty acid esters include animal oils and epoxidized vegetable oils, such as naturally occurring epoxidized oils, epoxidized soybean oil (ESO), epoxidized corn oil, epoxidized sunflower oil, Flax seed oil epoxidized, epoxidized canola oil, rapeseed oil, safflower oil, epoxidized tall oil, epoxidized tung oil, epoxidized fish oil, epoxidized lard oil, beef oil epoxidated castor, epoxidated methyl stearate, epoxidated butyl stearate, epoxidated 2-ethylhexi1a stearate, epoxidated stearyl stearate, epoxy-cyclohexylated eoxyoxyoxyoxyoxyoxy-oxide oxide, epoxylated eoxyoxyoxyoxyate and epoxylated oxide, epoxy epoxidated palm, epoxidated fatty acid methyl esters, epoxidized derivatives of each of the above, and any combination of the above.

A non-limiting example of naturally occurring epoxidized oils is Vernonia oil.

The polymeric composition can include one or more of the following plasticizers alone, or in addition to the epoxidated polybutadiene, tris (epoxypropyl) isocyanurate, diglycidyl bisphenol A ester, vinylcyclohexane diepoxide, dicyclohexene diepoxide, and any combination thereof.

The epoxidated fatty acid ester can be prepared in a variety of ways.

The fatty acid can be reacted with an alcohol (monool or polyol) to create ester bonds between the fatty acids and the alcohol can escape the esterification, transesterification, or r 'reactions

K and e. - 6

P 6 interesterification, followed by epoxidation of the product of these esterifications, transesterification, or reactions of interesterifications. Linked not by a particular theory, it is believed that epoxidation increases the parameter of polarity and solubility of the reaction of the products of - esterification, transesterification, or interesterification, resulting in increased compatibility of the epoxidized fatty acid ester with the chloride resin. polyvinyl. 10 Natural oils can be used as a starting material. In this example, natural oils can be saponified by fatty acids and then esterified with alcohols as described above. Then, the low molecular weight esters are epoxidized. Unsaturated esters 15 can be epoxidized with a peracid. Alternatively, a fatty acid glycidyl ester can be prepared via epichlorohydrin or related chemicals. In yet another alternative concretization, it is possible to transesterify the triglyceride 20 with the alcohols and then epoxidize to the fatty esters, unsaturated with a peracid. In one embodiment, the epoxidated fatty acid ester can be "any C1-C14 epoxidized fatty acid ester, including methyl, ethyl, propyl, butyl, and 2-25 ethylhexyl esters. In an additional embodiment, the fatty acid ester epoxidized, the epoxidated fatty acid ester is an epoxide from a fatty acid methyl ester.

- A non-limiting example for the preparation of a fatty acid methyl ester epoxide starting with soybean oil "30, where soybean oil is transesterified with methanol to make the fatty acid methyl ester in the oil. Glycerol is removed from reaction products due to insolubility. A solution of peracetic acid in ethyl acetate is used to epoxide the double bond in fatty acids. Peracid is kept below 35% peracid. and 35 degrees Celsius to prevent Upon completion, ethyl acetate and acetic acid product are removed via vacuum deflation. EFA functions as a plasticizer in the polymeric composition. A "plasticizer" is a substance that decreases the tensile strength and modulus. , and increases

The flexibility, elongation, impact strength, and shear strength of the polymeric resin (typically, a thermoplastic polymer) to which it is added. A plasticizer can also decrease the melting point of the polymeric resin, decrease the glass transition temperature, and / or improve the processability of the polymeric resin to which it is added. The polymeric composition contains epoxidized fatty acid ester in an amount of about 10, or 15, or 20, 15 or 25, or 30, or 35, or 40% by weight at about 90, or 85, or 80, or 75, or 70, or 65, or 60% by weight. The weight percentage is based on the total weight of the polymeric composition. In one embodiment, EFA has an oxirane index (percentage of oxiran-oxygen) of about 3, or 4, or 20 5, or 6 to about 12, or 10, or 8. In one embodiment, EFA has an iodine index (gram of iodine / 100g) less than 5, or less than 3, or less than 2, or about 0 to less than 5. In one embodiment, the epoxidized fatty acid ester is 25 soy oil epoxidized. In one embodiment, EFA is the primary plasticizer present in the polymeric composition. In one embodiment

In addition, EFA is the only plasticizer present in the polymeric composition.

H 30 In one embodiment, EFA is a plasticizing composition based on biological material. A "biological material-based plasticizer composition", as used herein, is a plasticizer composition composed of vegetable-derived material. A bio-based plasticizer composition is advantageous because it reduces greenhouse gas emissions, and enables the user to obtain carbon and / or LEED credits

..

8 (Leadership in Energy and Environmental Planning). Although the composition of this invention may be phthalate free, in one embodiment, the plasticizer composition may also comprise other plasticizers including, but not limited to, phthalates (such as diisononyl phthalate, dialyl phthalate, di-2 phthalate - ethylhexyl, dioctyl phthalate, diisodecyl phthalate and diisotridecyl phthalate), citrates, acetylated monoglyceride Grindsted® Soft-N-Safe of hydrogenated castor oil (Danisco product), Hexanoll® DINCH acid diisononyl ester 1,2- cyclohexanedicarboxylic (BASF product), adipic polyesters and benzoates. Heat stabilizing composition: The polymeric composition includes a heat stabilizing composition. The heat stabilizing composition includes (i) a first metal salt, (ii) a second metal salt, and (iii) a diacetone. The metal for each metal salt can be an alkali metal (such as lithium, sodium, and potassium), an alkaline earth metal (such as magnesium, calcium, strontium, and barium), zinc, aluminum, tin, and / or alkyl- tin. Non-limiting examples of suitable metal salts include organic carboxylates, such as stearates, laurates, oleates, maleate, benzoates, phosphates, such as stearyl phosphate, diistearyl phosphate, phenyl phosphate, and diphenyl phosphate, and basic salts, carbonates, and sulfates thereof, metallic oxides, and metallic hydroxides thereof. In one embodiment, the metal salts are selected from calcium stearate, zinc stearate, barium stearate, cadmium stearate, organotin compounds such as dibutyltin dilaurate, dibutyltin dimaleate. In one embodiment, the metal in the first metal salt is zinc and the metal in the second metal salt is selected from calcium and barium. In one embodiment, the first metal salt is zinc stearate.

The second metal salt is calcium stearate.

In one embodiment, the first metal salt is zinc stearate.

The second metal salt is barium stearate.

The heat stabilizing composition can also include 5 hydrotalcites, zeolites, lubricants and / or perchlorates.

The heat stabilizing composition includes a diacetone, such as a B-diacetone.

Non-limiting examples of suitable multi-acetone compounds and B-diacetone compounds include acetylacetone, triacetylmethane, 2,4,6-heptatrione, butanoylacetylmethane, lauroylacetylmethane, palmitoylacetylmethane, stearoylacetylmethane, phenylacetylacetylmethane, dichlorohexyl, benzyl, hexane, hexane palmitoyl benzoyl methane, stearoyl benzoyl methane, octylbenzoylmethane, bis (4-octylbenzoyl) methane, benzoyldiacetylmethane, 4-methoxybenzoylbenzoylmethane, bis (4-carboxymethylbenzoyl) methane, 2-carboxymethylbenzoylacetyl-ethoxy, cyclohexyl acid, 1,3-oxide 3,6-dimethyl-2,4-dioxicyclo-1-carboxylic acid methyl, 2-acetylcyclohexanone, dimedone, 2-benzoylcyclohexane, and any combination of the above.

A non-limiting example of appropriate mixtures of palmitoyl benzoyl methane and stearoyl benzoyl methane is Rhodiastab® 50. In one embodiment, the heat stabilizing composition is lead free.

Non-limiting examples of lead-free heat stabilizing compositions include Mark® 6797, Mark® 6777 ACM, Therm-Chek® RC215P, Therm-Chek® 7208, Naftosafe® EH-314, Baeropan® MC 90400 KA, Baeropan® MC 90400 KA / I, Baeropan® MC 9238 KA-US, Baeropan® MC 90249 KA, and Baeropan® MC 9754 KA.

The heat stabilizing composition is present in the polymeric composition in an amount of about 0.1 or 0.2, or 0.4, or 0.6% by weight, to about 10.0, or 7.0 or 5 , 0% by weight.

The weight percentage is based on the total weight of the polymeric composition.

In one embodiment, the individual components of the heat stabilizing composition (a first metal salt, a second metal salt, and a diacetone) can. not all be present in a compound, but instead 5 can be added separately to the polymeric composition. 0

The polymeric composition is generally prepared according to conventional dry mixing or wet mixing methods.

The mixtures obtained from the mixing process can be further compounded with a mixer such as a Banbury batch mixer, a Farrel continuous mixer, or a twin or single screw extruder.

In one embodiment, the polymeric composition of the present invention is made by absorbing the plasticizers described here into the PVC powder to make a dry mixture.

Any suitable method / apparatus can be used to make the dry mix including, but not limited to, a Henschel mixer or a Ribbon-A mixer. The polymeric composition may contain other additives in addition to PVC and plasticizer.

The dry blend can then be further combined by melt blending (extrusion, as an example) and formed into any desired shape (film, pellets, etc.). In one embodiment, the polymeric composition is mixed by melting.

The polymeric composition mixed by melting is molded on a plate. In one embodiment, the polymeric composition is mixed by melting and molded into a plate.

The plate has a "30 Shor'e hardness of about D10, or D20, or D30 to about DJO, or D60, or D50. Shore hardness is measured according to ASTM D 2240. In one embodiment, the polymeric composition it is mixed by melting and molded into a plate.

The plate has a tensile strength retention greater than about 70%, or greater than about 80%, or greater than 90%, after 168 hours of heat aging at 113 "C as measured on a cut specimen shaped like a dog bone from the 30 mm thick plates according to ASTM D 638. In one embodiment, the polymeric composition is mixed by melting and molded into a plate.The plate has a higher tensile strength retention than about 70%, or greater than 80%, or greater than 90%, after 168 hours of heat aging at 136 "C as measured in dogbones cut from plaques 30 thousandths of thickness according to ASTM D638. In one embodiment, the present polymer composition is mixed by melting and molded into a plate. The plate "has an elongation retention by tension greater than about 30 ° :, or greater than 35%, or greater than 40%, or greater than 70%, or greater than 80%, or greater than 90% after 168 hours by heat aging at 136 ° C as measured in plates with 30 thousandths of thickness according to ASTM D

638. Each resistance to tension elongation is measured by (i) conservation and (ii) cuts of dog bone specimens aged by heat from the compression of the molded plates according to ASTM D-638. In one embodiment, the polymeric composition is mixed by melting and molded on a plate. The plate has no discoloration (that is, it retains color). The color is determined by visual inspection. In one embodiment, the polymeric composition is mixed by melting and molded on a plate. The plate shows mild or no exudation (ejection) on the surface after 48 hours of exposure to 23 ° C. The presence of exudate is determined using the curve ejection test. In one embodiment, the polymeric composition is mixed by melting and molded on a plate. The plate shows little or no exudation (ejection) on the surface after aging for 7 days at 113 ° C. The presence of exudate is determined by visual inspection.

In one embodiment, the polymeric composition is mixed by melting and molded on a plate.

The plate shows slight or no exudation (ejection) on the surface after aging for 7 days at 136 ° C.

The presence of 5 exudates is determined by visual inspection.

In one embodiment, the polymeric composition is mixed by melting and molded on a plate.

After exposure to 136 ° C for 7 days, a specimen of 1.25 inches in diameter that is not cut to 30 thousandths of thickness molded into plates, maintains a percentage greater than 96%, or greater than 96.5%, or greater than 97.0% of its original weight (that is, weighed before heat aging). In one embodiment, the polymeric composition is mixed by melting and molded on a plate.

The plate has an oxidative induction time at 200 ° C greater than 20 minutes, or greater than 25 minutes, or greater than 30 minutes.

In one embodiment, the polymeric composition is mixed by melting and molded on a plate.

The plate exhibits a drying module retention after aging at 113 ° C for 8 weeks less than 300%, or less than 250%, or less than 200 °.

Additives: Any of the aforementioned polymeric compositions may include one or more of the following additives: a filler, an antioxidant, a flame retardant (antimony trioxide, molybdic oxide, and alumina hydrate), an anti-drip agent, a colorant, a lubricant, low molecular weight polyethylene, a light hindered amine stabilizer (having at least one secondary or tertiary amine group) ("HALS"), UV light absorbers (such as o-hydroxyphenyltriazines), curing agents , amplifiers and retardants, processing aids, coupling agents, anti-static agents, nucleating agents, gliding agents, viscosity control agents, tackiness agents, anti-static agents

blocking, surfactants, extensor oils, scavengers acids, metallic deactivators, and any combination thereof.

In one embodiment, the present polymeric composition 5 includes a filler material.

Non-limiting examples of suitable filler material include talc, calcium carbonate, calcined clay, bleaches, Fuller's Earths, magnesium silicate, barium sulfate, calcium sulfate, strontium sulfate, titanium dioxide, magnesium oxide, magnesium hydroxide, calcium hydroxide, hydrophilic vaporized silica, hydrophobic vaporized silica (treated surface), and any combination of the above.

Non-limiting examples of calcined clay are Satintone® SP-33 and Polyfil® 70. In one embodiment, the present polymeric composition includes an antioxidant.

Non-limiting examples of suitable antioxidants include hindered phenols, such as, tetrakis [methylene (3,5-di-tert-butyl-4-hydroxyhydro-cinnamate)] methane; bis [(beta- (3,5-diterc-butyl-4-hydroxybenzyl) -methylcarboxyethyl] sulfide; 4,4'-thiobus (2-methyl-6-tert-butylphenol), 4,4'-thiobis (2- tert-butyl-5-methylphenol); 2,2'-thiobis (4-methyl-6-tert-butylphenol), and thiodiethylene bis (3,5-di-tert-butyl-4-hydroxy) hydrokinamate; phosphites and phosphonites such corrio, tris (2,4-di-tert-butylphenyl) phosphite and di-tert-butylphenyl-phosphonites; thio compounds such as dilaurylthiodipropionate, dimeristyltipropionate, and distearyl diipropionate, various siloxanes; Polymerized 2-dihydroquinoline, n, n'-bis (1,4-dimethylpentyl-p-phenylenediamine), alkylated diphenylamines, 4,4'-bis (alpha, alpha-dimethylbenzyl) diphenylamine, diphenyl-p-phenylenediamine, di-aryl -p-mixed phenylenediamines, and other anti-degrading or stabilizing blocking amines / HINDERES.

Non-limiting examples of suitable antioxidants include Topanol® CA, Vanox® 1320, Irganox® 1010, Irganox®

245 and Irganox® 1076. The antioxidant (or antioxidants) can be added to the plasticizers (or plasticizer compositions) of this description.

Antioxidants can be used in amounts of 0.01 to 5% by weight based on the weight of the polymeric composition.

In one embodiment, the present polymeric composition includes a lubricant.

Non-limiting examples of suitable lubricants include stearic acid, metal salts and stearic acids, paraffin wax, and polyethylene glycol.

Lubricants can be used alone or in combination.

The lubricant can also be combined with the heat stabilizing composition.

In one embodiment, the present polymeric composition includes a processing aid.

Non-limiting examples of suitable processing aids include metal salts of carboxylic acids, such as, zinc stearate or calcium stearate, fatty acids such as stearic acid, oleic acid, or erucic acid; grease amide, such as, stearamide, oleamide, erucamide, or N, N'-ethylene-bis-stearamide; polyethylene wax; oxidized polyethylene wax; ethylene oxide polymers; copolymers of ethylene oxide and propylene oxide; vegetable waxes; oil waxes; nonionic surfactants; and polysiloxanes.

Processing aids can be used in amounts of 0.05 to 5 ° 5 by weight based on the weight of the polymeric composition.

In one embodiment, the polymeric composition includes a stabilizer and an antioxidant.

With an optimum stabilizer and antioxidant package, the polymeric compositions of the present invention are suitable for applications requiring a long test period of resistance to dry or wet insulation at high temperatures, and other damaging applications where temperatures are as high as 136 ° C .

The polymeric composition of the present invention can comprise two or more of the embodiments described herein.

Coated conductor: The aforementioned properties of the polymeric composition of the present invention make them well suited to articles, such as coating applications.

P 5 wires and cables (jackets, insulation), and applications in "high temperature wires / cables in particular. Consequently, the present invention provides a coated conductor. A" conductor "is an elongated element (wire, cable, fiber ) for energy transfer at any voltage (DC, AC, or transient). The conductor is typically at least one metallic wire or at least one metallic cable (such as aluminum or copper), but can include optical fibers. it can be a single cable or a plurality of 15 cables that are connected together (ie, a cable core, or a core). A "cable" and similar terms mean at least one wire or optical fibers within a protective insulation , jacket or lining. Typically, a cable is two or more wires or optical fibers bonded together, typically in a common protective insulation, jacket or lining. Individual wires or fibers within the jacket can be bounded, covered or insulated. cables can contain both, electrical wires and optical fibers. The coated conductor can be flexible, semi-rigid, or rigid. A coating is located on the conductor. The coating can be one or more inner layers such as an insulating layer and / or a semiconductor layer. The coating may also include an outer layer '30 (also referred to as a "jacket" or a "lining"). The coating includes any of the polymeric compositions of the present invention as described herein. As used here, "over / under" includes direct or indirect contact between the coating and the conductor. 35 "Direct contact" is a configuration where the coating immediately contacts the conductor, without the intervening layer and / or without intervening material located between the coating and the conductor.

The coating may entirely or partially cover or otherwise circumvent or envelop the driver.

The coating can be a single component involving the driver. 5 Alternatively, the coating can be a layer of a multilayer jacket or lining involving the metallic conductor.

The coating includes the polymeric resin of the present invention.

The polymeric resin can be any polymeric resin as described here.

The polymeric resin includes (i) a vinyl chloride resin, (ii) an epoxidized fatty acid ester, and (iii) a heat stabilizing composition.

The heat stabilizing composition includes a first metal salt, a second metal salt, and a β-diacetone.

In one embodiment, the epoxidized fatty acid ester is the primary plasticizer in the coating.

In a further embodiment, the epoxidized fatty acid ester is the unique plasticizer in the coating.

In one embodiment, the epoxidized fatty acid ester present in the coating is epoxidized soybean oil.

The coating can have any of the properties as discussed above for the present composition.

In one embodiment, the coated conductor passes the heat test as measured in accordance with UL-1581. The polymeric composition of the present invention has the unexpected properties of flexibility, low volatility of the plasticizer, low migration (low / no ejection), low viscosity, and high thermal stability although it simultaneously contains epoxidized fatty acid ester, as the primary plasticizer or as the unique plasticizer in the composition.

The polymeric composition of the present invention presents an unexpected and / or exceeds the rigorous heat aging test at 136 ° C.

When extruded as a coating on a conductor, the polymeric composition of the present invention exhibits an unexpected and / or excess resistance to rigorous wet and dry insulation at elevated temperatures (for example, 75 ° C to wet or 97 ° C to dry). Non-limiting examples of suitable coated conductors 5 include flexible electrical network, such as, flexible electrical network for electronic consumers, a power cable, a power charge wire for cell phones and / or computers, computer data wires, power cords. power, electrical material for devices, construction wires, automotive wires, and consumer electronic accessory strings.

The coated conductor of the present invention can comprise two or more of the embodiments described herein.

The coated conductor, such as a coated wire or a coated cable (with an optional insulation layer), with a jacket comprising the composition described herein that can be prepared with various types of extruders, for example, single screw type or with extruders double threads.

A description of a conventional extruder can be found in U.S. Patent No.

US 4,57,600. An example of a co-extruder and an extruder can be found in U.S. Patent 5,575,965. A typical extruder has a hopper at its upstream end and a die at its downstream end. the hopper feeds a barrel, which contains a thread.

At the downstream end, between the thread end and the die, there is a group of sieves and a circuit breaker plate. the screw portion of the extruder is considered to be divided into three sections, the feed section, the compression section, and the measurement section, and two zones, the rear heating zone and the frontal heating zone, the sections and the zones operate from upstream to downstream.

Alternatively, there may be multiple heating zones (more than two) between the axes going from upstream to downstream.

If there is more than one barrel, the barrels are

_ 18 T connected in series. The ratio of the length to the diameter of each barrel is in the range of about 15: 1 to about 30: 1. a The wire and cable constructions (ie, a coated metallic conductor) of this description are made by extruding the composition of the present invention onto the conductor or the bundle of insulated conductors to form a jacket (or jacket) around isolated conductors. The thickness of the jacket or insulator 10 depends on the requirements of the application to use the desired end. the typical thickness of the jacket or insulator is about 0.010 inches to about 0.200 inches, or about 0.015 inches to about 0.050 inches. The composition of the present invention can be extruded into a jacket from previously made compositions. Usually, the composition of the present invention is in the form of pellets to facilitate feeding into the extruder. The jacket or wire and cable insulator can be extruded directly from the compost extruder 20 without going through a separate pelletizing step of the present composition. This one-step post-extrusion / extrusion process would eliminate a historic heating step for the composition. A nylon layer can be extruded over the insulator, 25 as in conventional THHN, THWN and THWN- constructions

2. Non-limiting examples of the embodiments of the present invention are provided below. In an embodiment E1, a polymeric composition is provided and comprises a vinyl chloride resin, an epoxidized fatty acid ester, and a heat stabilizing composition. Heat stabilizing compositions include a first metal salt, a second metal salt , and a | 3-diacetone E2 The polymeric composition 35 of E1 where the epoxidated fatty acid ester has an oxirane number of about 3% by weight to about 12% by weight. one from E1-E2 where the epoxidated fatty acid has an iodine number from 0 to less than 5. E4 The polymeric composition of any one from E1-E3, where the epoxidated fatty acid is an epoxidized soybean oil.

E5. The polymeric composition of any of 5 E1-E4 where the heat stabilizing composition comprises two different metals, each metal selected from the group consisting of lithium, sodium, potassium, magnesium, calcium, strontium, barium, zinc, aluminum, and tin.

E6. The polymeric composition of any one of E1-E5, where the first metal salt comprises zinc and the second metal salt comprises a metal selected from the group consisting of barium and calcium.

E7. The polymeric composition of any one of E1-E6 where the heat stabilizing composition comprises a β-diacetone selected from the group consisting of dibenzoylmethane, stearoylbenzoylmethane, palmitoyl benzoyl methane, and combinations thereof.

E8. The polymeric composition of any one of E1-E7 having a curve ejection index of 0-2, as measured according to ASTM D 3291. E9. The polymeric composition of any one of E1-E8 having a tensile strength retention greater than about 30 ° after 168 hours of heat aging at 136 ° C as measured according to UL 1581 and ASTM D 638. In one embodiment, ElO, a polymeric composition is provided and comprises a polyvinyl chloride resin, an epoxidized soybean oil, and a heat stabilizing composition.

The heat stabilizing composition comprises a first metal salt, a second metal salt, and a β-diacetone.

E11. The polymeric composition of ElO being that the heat stabilizing composition comprises zinc stearate and a | 3-diacetone selected from the group consisting of dibenzoylmethane, stearoylbenzoylmethane, palmitoyl benzoyl methane, and combinations thereof.

In one embodiment, E12, a coated conductor is provided and comprises a conductor, and a coating on the conductor.

The coating comprises the polymeric composition of any of the embodiments of E1-E11.

one (for example, 1.1; 1.5, etc.), a unit is considered to be 0.0001; 0.001; 0.01 or 0.1, as appropriate.

For ranges containing single digit numbers less than ten (for example, 1 to 5), a 5 unit is typically considered to be 0.1. These are just examples of what is specifically intended, and all possible combinations of numerical values between the lower value and the enumerated upper value are considered to be expressly stated in this invention.

Numerical ranges are provided within this description, among other things, are defined by the amounts of the components in the composition and / or coatings, additives, and various other components in the composition, and the various characteristics and properties by which these components are defined.

As used with respect to a chemical compound, unless specifically indicated otherwise, the singular includes all isomeric forms and vice versa (for example, "hexane", includes all hexane isomers, individually or collectively). The terms "compound" and "complex" are used interchangeably to refer to organic compounds, inorganic compounds and organometallic compounds.

The term "atom" refers to the smallest constituents of an element with respect to the ionic state, that is, whether or not it carries a partial charge or is linked to another atom.

The term "amorphous" refers to a polymer that loses a crystalline melting point, as determined by differential scanning calorimetry (DSC) or an equivalent technique. "Mixture", "polymer mixture" and similar terms mean a mixture of two or more polymers, as well as mixtures of polymers with various additives.

Said mixtures may or may not be discernible.

Said mixtures may or may not be in separate phases.

Said mixtures may or may not contain one or more domain configurations, such as

Definitions: All references to the Periodic Table of Elements refer to the Periodic Table of Elements published and copyrighted by CRC Press, Inc., 5 2003. Also, any reference to a Group, or Groups, must be to the Group or Groups reflected in this Periodic Table of the Elements using the IUPAC system for numerical groups.

Unless otherwise stated, implied in context, or customary in the art, all 10 parts and percentages are based on weight, and all test methods are current as of the filing date of this invention.

For the purposes of United States patent practice, the contents of any referenced patent, patent application or publications are incorporated by the reference in its entirety (or its equivalent North American version is thus incorporated by reference) especially with respect to that described in synthetic techniques, product and processing design, polymers, catalysts, definitions (to the extent not inconsistent with any definitions specifically provided in this description), and general knowledge in the art.

The numerical ranges in this description are approximate, and thus may include indexes outside the ranges unless 25 otherwise indicated.

The numerical ranges include all values from and including the lower and upper values, in increments of one unit, providing that there is a separation of at least two units between any lower value and any upper value.

As an example, if a composition, physics or other property, such as, for example, molecular weights, melt index, etc., is 100 to 1,000, then the intention is that all individual values, such as, 100 , 101, 102, etc., and sub-ranges, such as, 35 100 to 144, 155 to 170, 197 to 200, etc., are expressly listed.

For ranges containing values that are less than one or containing fractional numbers greater than that determined from electron transmission spectroscopy, light scanning, X-ray scanning, and any of the other methods known in the art. "Composition" and terms of the genre mean a mixture or combination of two or more components. The terms "comprising", "including", "having" and its derivatives are not intended to be exclusive in the presence of any additional component, step or procedure, whether or not it is specifically described. In order to avoid any doubt, all compositions claimed through the use of the term "comprising" may include any additional additive, adjuvant, or compound if polymeric or otherwise, unless stated otherwise. In contracts, the term "consisting essentially of" excludes from the scope of protection any successive mention of another component, step or procedure, except that which are not essentially operable. The term "consisting of" excludes any component, step or procedure that is not - specifically outlined or listed. The term "or", unless otherwise stated, refers to members listed individually, as well as in any combination. In one embodiment, the compositions described here are phthalate free. The term "phthalate free composition", as used herein, means a composition that avoids phthalate or is otherwise phthalate free. A "phthalate" is a compound that includes the following structure (I):

THE 5 ~ OR 'F ~ ° "

The (I) where R and R 'can be the same or different. Each of

R and R 'being selected from a substituted hydrocarbyl / unsubstituted hydrocarbyl group having from 1 to 20 carbon atoms.

As used herein, the term "hydrocarbyl" and "hydrocarbon" refer to the 5 substituents containing only hydrogen atoms and carbon atoms, including branched or unbranched, saturated or unsaturated, cyclic, polycyclic, fused, or acyclic species, and combinations thereof.

Non-limiting examples of hydrocarbyl groups include alkyl, cycloalkyl, alkenyl, alkadienyl, cycloalkenyl, cycloalkylenyl, aryl, aralkyl, alkylaryl groups, and alkynyl groups.

Each position 3, 4, 5, and 6 can be popularized by hydrogen or by another portion.

The term "polymer" (and related terms) is a macromolecular compound prepared by reacting (ie, polymerizing) monomers of the same or different types. "Polymer" includes homopolymers and copolymers.

Test methods: The presence of diacetones in the heat stabilizing composition is determined by extracting 1% by weight with the stabilized THF, followed by liquid injection of GC-MS.

Beta-diacetone is identified by interpreting the mass spectrum and comparing it to the external standard.

The iodine index measures the degree of unsaturation in the oils and is determined according to "AOCS Official Method Cd 1-25 (g I2 / 100g)". curve ejection is measured according to ASTM D 3291 which determines the compatibility of plasticizers in poly (vinyl chloride) plastics by assessing the amount of plasticizer that ejects due to the compression stress represented within a "eight" curve 180 °. Briefly, using this method, the test species of the plasticized poly (vinyl chloride) sheet are ejected in an arc of approximately 180 ° and retained on a kind of hook designed to retain them in the desired conformation.

The specimens are kept at a controlled temperature (ie 23 ° C) and, at specified intervals, a specimen is removed, ejected at 5 180 °, in the opposite direction, and the previous one within the curve at eight is examined for evidence of plasticizer ejection through visual inspection and by drying the area with a drying indicator.

Table 1 shows the classification of curve ejection indices.

TABLE 1 writing (Quantity level = assification | ejection / migration) | exudatej I Completely dry on curve I None I 0 (without visible evidence on the curve) (ie, without ejection or migration) I Slippery with quantities I Take i 1 minimum of oily substances within the eight I curve (ie low ejectionv: or low migration) Slippery with 'Moderate' amounts 2 moderate oily substances within the eight curve (ie moderate ejection, or moderate migration) Slippery with large Heavy / 3 amounts of oily dripping substances within the curve in eight (ie high ejection, or high migration) The oxidative induction time (OIT) at 200 ° C is determined using differential scanning calorimetry (DSC). The cellular DSC is pre-evaluated to ensure that the instrument has been accurately calibrated for temperatures using high purity indium (melting point = 156.6 ° C). Before the experiment, it is guaranteed that the cellular DSC will achieve an isothermal temperature of 200, 0 ° C and the purification with nitrogen and oxygen gases are connected to the DSC purification gas inlet port.

A mass sample of approximately 10 to 15 mg is used in an open aluminum pan.

The most consistent OIT results are achieved using a one-piece disc test.

The plate material so molded is used to ensure that the sample is homogeneous with minimal impact on the test results.

The sample is heated under a nitrogen atmosphere from room temperature to the specified temperature at a rate of 20 ° C / minute.

The sample is kept under a nitrogen atmosphere at the specified temperature for a period of 5 minutes to allow the sample and cell DSC to thermally balance at the target temperature.

After 5 minutes of the waiting period, the gas is switched from nitrogen to oxygen.

The sample is maintained under isothermal conditions with the oxygen atmosphere until a significant oxidative exothermic response is obtained.

The time required for this to occur is dependent on the relative oxidative stability of the material being tested.

The experiment is terminated only after a significant exothermic start is obtained (ie, abort the next segment if mW> 200). The ILO index is defined as the initial period established using the initial option in the DSC data analysis software.

The oxirane index (oxygen oxirane content) is determined according to "AOCS Official Method Cd 9-27". The compatibility of the plasticizer in the polymeric composition is also assessed through visual inspection of molded or extruded specimens aged at elevated temperatures (eg 113 ° C or 136 ° C) for defined lengths of time (eg 7 days). The extruded specimen may be in the form of a wire (ie, extruded insulation on the conductor). Shore hardness is determined according to ASTM D 2240. The surface smoothness of the coated conductors (extruded wires) is measured using a rough surface measuring device made by Japan's "Mitutoyo", according to ANSI / ASME B46.1 .

Tensile strength (TS), tension resistance retention (TSR), tension stretching (TE), tension tension retention (TER), and the Secant Module (at 2 inches / minute) on un aged specimens, 5 on specimens aged at 113 ° C or 136 ° C or 60 ° C (QUV chamber and 90% relative humidity), for up to 8 weeks, are determined in accordance with ASTM D 638 and US 1581/2566 as both a proof cut in the shape of dog bone ("dogbones cut") from the molded plates or tubular insulators removed from the coated conductors (extruded wires). The term "UL 1581" is provided by the "Laboratories Reference Standard" for electrical wires, cables, and flexible cords.

UL 1581 contains specific details for conductors, insulation, jackets and other covers, and for methods of preparing specimen sample selection, and conditioning and for measuring and calculating those that are required in standard wires and cables. · The volume of resistivity (Ohm-cm) at 23 ° C, with a direct current of 500 volts, is measured according to ASTM D 257. The specimens of 3.5 inches in diameter are cut into plates molded with 40 thousandths of a thickness and tested using a "Hewlett Packard 16008" Resistivity Cell "device connected to a" Hewlett Packard 4329A "high strength meter. The retained weight (%) after 7 days at 136 ° C is measured on the 1.25 inch specimens in diameter that were cut in molded plates with 30 thousandths of thickness.

Wet insulation resistance (WIR) is measured on wire samples with a solid copper conductor 14 AWG and 0.015 in thick insulation according to UL 83/2556. The sample lengths are 14 feet, with 10 feet in a spiral immersed in water and 2 feet at both ends acting as a conductor for the power source.

The samples are aged in a water bath at 75 ° C and under 600 V AC for a period of up to 60 seconds with a Quadtech 1868 A megaohmometer. The first measurement was carried out after 6 hours of immersion in water, with no voltage applied. All subsequent measures were taken on a weekly basis. By way of example, and not for limitation, examples of the present invention will be provided.

EXAMPLES The components for Examples 1 to 6 and comparative samples (CS) 1-8 are provided in Table 2 below: TABLE 2 Examples 1-6 CS 1-4 CS 5-6 CS 7-8 PVC I 63.0 I 63.0 I 62.3! 60.3 I OxyVinyls® 240F i Plasticizer PLAS- I 27.3! 27.3 I 30.0! 30.0 I CHEK® 775 I Loading material: i 6.4 I 6.4 I 6.4! 6.4 SatintoneR SP-33 clay jAntioxidant Irganox®j 0.3 I 0.3 I 0.3! 0.3 1076 Composition I 3.0 I 0.0 or | 1.0! 3.0 I) 3yO heat stabilizer All values are% by weight based on the total weight of the composition- The composition of various heat stabilizing compositions is provided in Table 3, as obtained from safe material in the data of various materials (except for the presence of diacetone, which was determined by extracting 1% by weight with stabilized THF, followed by liquid injection GC-MS). The weight percentage is based on the total weight of the heat stabilizing composition.

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R83 - Rhoddiastab 83 dibenzoylmethane (CAS - 61346-73-4) R50 - Rhodiastab 50 palmitoyl benzyl methane / stearoyl bezonyl methane (CAS 58446-52-9) n / a - not applicable (because none was detected). 5 The analytical test of several heat stabilizing compositions was conducted to check for the presence of B-diacetones, such as Rhodiastab 83 (dibenzoylmethane) and Rhodiastab 50 (Mixture of palmitoyl benzoyl methane and stearoyl benzoyl methane). The heat stabilizing compositions in comparative samples 2, 3 and 4 (CS 2, CS3 and CS 4) do not contain β-diacetones.

The following procedure is used to prepare the compositions of Examples 1 to 6 and comparative samples CS 1 to 8. - preheat the plasticizer to 60 ° C for at least 60 seconds and stir before use; - weigh the individual ingredients; - first prepare "dry mixes" by soaking the plasticizer composition in a PVC powder, and then smelting the mixture. - The following procedure is used to prepare the "dry mix": (a) prepare "solid mixes" by mixing all (except plasticizer and filler) in a container using a spatula; (b) use "40 cN" from a Brabender mixing vessel with Sigma blades at 90 ° C and 40 rpm. (C) after 2 minutes of heating, add the solid mixture.

Mix for 30 seconds. (d) add the plasticizer.

Mix for 360 seconds (6 minutes) (e) add filler clay material.

Mix for 60 seconds. (f) stop and remove the "dry mix". - "Dry mixes" are subsequently mixed by casting using the following procedure. (a) use "40 cN" from a Brabender mixing vessel with eccentric rotors at 40 rpm. (b) add the "dry mix", and mix at 180 ° C for 2 minutes.

The mixed compositions removed from the mixing vessel 5 were compression molded at 180 ° C for 5 minutes, and the color of the resulting plates was recorded (with cream being desirable). hardness, weight, tensile strength, elongation (at 2 inches / minute) were measured in un aged specimens at 113 ° C or 136 ° C for 168 hours, which were cut into molded plates 30 mils thick.

Shore hardness was measured on molded specimens 250 mils thick.

The results were given in table 4 below.

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Shore (D) = Shore hardness (DD) ASTM D2240 TE = tension elongation, ASTM D638 TER = tension elongation retention, ASTM D638 TER 113 ° C = tension elongation retention (%), 5 specimen aged at 113 ° C for 168 hours TER 136 ° C = tension elongation retention (%), specimen aged at 136 ° C for 168 hours TS = Tensile strength, ASTM D638 TSR = tension resistance retention, ASTM D638 TSR 113 ° C = tension elongation retention ( %), specimen aged at 113 ° C for 168 hours TSR 136 ° C = retention of tension elongation (%), specimen aged at 113 ° C for 168 hours VR = volume of resistivity (Ohms cm) WR = weight retention zinc = Baerlocher zinc stearate {RSN 131 HS Granular HyDense, Code 8512) Zinc stearate = calcium stearate Mallnckrodt RSN 248-D Examples 1 to 6 show satisfactory properties before and after heat aging.

In contrast, comparative sample 1 (CS 1), made without any heat stabilizer, shows inferior properties, that is, amber color (indicative of degradation), superior density, superior weight loss and poor retention of tension elongation after aging to 136 ° C.

Comparative samples 2, 5 and 7 (CS 2, CS5 and CS7), containing zinc stearate as the heat stabilizing composition, result in substantial exudation (ejection) and a significantly lower retention of tension elongation after aging at 136 ° C.

Comparative samples 3 and 4 (CS 3 and CS4), mixtures of metal salts without diacetones, also have an amber color, indicating that a significant degradation occurred during the melting mixture and the compression molding steps.

Comparative samples 6 and 8 (CS6 and CS8), containing calcium stearate as a heat stabilizing composition, result in significant discoloration, exudation (ejection) and lower retention of tension elongation after aging at 136 ° C.

Examples 1 to 6 demonstrate that the PVC / ESO 5 composition with 0.2 to 10% by weight of a heat stabilizing composition containing a mixed metallic soap and a B-diacetone with superior performance properties.

Example 7 and Comparative Samples 9 to 11: The components for Example 7 and Comparative Samples 9 to 11 are provided in Table 5 below:

TABLE 5 PVC example I 61f6 I 61.6 OxyVinyls® 240F Plasticizer: 28.7 I 28.7 PLAS-CHEK® 775 ESO Loading Material - clay I 6.4 I 6.4 Satintone® SP-33 Irganox® 1076 Antioxidant I 0.3 I 0.3 Heat stabilizing composition 3.0 jo, o or 3, O | The following procedure was used to prepare the compositions of Example 7 and CS 9 - 11. - preheat the plasticizer to 60 ° C for at least 60 minutes and stir before use. - weigh the individual ingredients;

- first prepare "dry mixes" by soaking the plasticizer in a PVC powder, and then smelting the mixture. - The following procedure is used to prepare the "dry mix": (a) prepare "solid mixes" by mixing all (except plasticizer and filler) in a container using a spatula; (b) use "250 cN" from a Brabender mixing vessel with Sigma blades at 90 ° C and 40 rpm. (C) after 2 minutes of heating, add the solid mixture.

Mix for 30 seconds. (d) add the plasticizer.

Mix for 360 seconds (6 minutes).

(e) add filler material to clay.

Mix for 60 seconds. (f) stop and remove the "dry mix". - The "dry mixes" are subsequently mixed by casting using the following procedure. (a) use "250 cN" from a Brabender mixing vessel with eccentric rotors at 40 rpm. (b) add the "dry mix", and mix at 180 ° C for 2 minutes.

Mixing compositions removed from the mixing vessel were molded by compression at 180 ° C for 5 minutes, and the color of the resulting plates was recorded (with cream being desirable). Weight, resistance to tension / elongation (in 2 inches / minutes) is measured in un aged specimens and specimens aged at 113 ° C or 136 ° C or 60 ° C (QUV chamber and 90% relative humidity) for up to 8 weeks, which were cut on a molded plate with a thickness of 30 thousandths.

Specimens aged by heat are also examined visually to show exudate (ejection) on the surface.

The oxidative induction term is also measured.

The results were determined in table 6.

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SMR = Securing Module Retention (%), specimen aged at 113 ° C for 8 weeks TE = tension elongation, ASTM D638 TER = tension elongation retention, ASTM D638 5 TER 113 ° C = tension elongation retention (%), specimen aged at 113 ° C for 8 weeks TS = Tensile strength, ASTM D638 TSR = Retention of tension resistance, ASTM D638 TSR 113 ° C = retention of tension elongation (° 5), specimen aged at 113 ° C for 8 weeks WR = weight retention Zinc stearate = Baerlocher zinc stearate (RSN 131 HS Granular HyDense, Code 8512) Compared to CS 9 -11, the composition of Example 7 broadly exhibits superior oxidative induction time, weight retention at elevated temperatures (even when exposed to UV and high humidity at 90% relative humidity); retention of secant module and retention of tension elongation after aging at elevated temperature for periods longer than 8 weeks.

Examples 8 and 9 The components of Examples 8 and 9 are provided in Table 7 below: TABLE 7 Example 8 Example 9 PVC OxyVinyl® 240F 63.0 65.0 Plasticizer PLAS-CHEK® 775 ESO 27.3 27.3 Loading material - clay 6.4 6.4 Satintone® SP-33 Antioxidant Irganox® 1076 0.3 0.3 Heat stabilizing composition - 3.0 1.0 3% by weight of Baeropan® MC 90249 KA The following procedure was used to prepare the compositions of Examples 8 and 9. - preheat the plasticizer to 60 "C for at least 60 minutes and stir before use. - weigh the individual ingredients. - first make" dry mixes "by washing the plasticizer from the PVC powder, and then make the melt mixes.

The following procedure was used to prepare "dry mixtures": 5 (a) prepare "solid mixtures" by mixing each (except plasticizer and filler) in a container using spatula. (b) use a high intensity mixer of the Henschel type to prepare 3 kg of the "dry mix" in a temperature range of 90 ° C and 1800 rpm, first by melting the solid mix for 60 seconds, then adding and mixing the plasticizer for a period of 360 seconds (6 minutes), and finally adding clay and mixing for an additional 90 seconds. (C) stop and remove the "dry mix". - the dry mixes are subsequently mixed by casting using a conical twin screw extruder (25: 1 L / D) at 45 rpm and a group of temperature profiles from zone 1 = 170 ° C, zone 2 = 175 ° JC, zone 3 = 180 ° C, mold = 185 ° C.

The extruded strips are subsequently air-cooled and pelleted.

The pellets are compression molded at 180 ° for 5 minutes.

The specimens are cut into molded plates of 30 thousandths during the testing of all properties except volume resistivity and Shore hardness.

The resistivity of the volume is measured in the species cut with 40 thousandths of thickness of the molded plates.

Shore hardness is measured on molded specimens 250 mils thick.

Pellets are also used to manufacture wires / cables for coating 0.064 inch (14 AWG) solid copper conductors using 25: 1 in a single screw extruder at 40 rpm and a temperature range of 170 °, 174 ° C, 180 ° C, 185 ° C.

The outside diameter of the coated conductor is approximately 0.094 inches (that is, approximately 0.015 inches of seal thickness). The pressure of the mold during the extrusion of the wire is observed.

The results are given in

Tables 8 and 9 below. The measure of the sealing resistance to humidity at 75 ° C of the wires is given in the Table

10. The compositions of Examples 9 and 9 result in (1) 5 coating of the ejection-free flat cable with (2) excellent retention of tension properties after heat aging at 136 ° and (3) excellent electrical properties. In particular, the long-term wet insulation resistance of the wires is excellent, well above the minimum passage requirement of 0.115 Megaohms / 10000 feet and passing the stability criterion less than 2% of the decrease in insulation resistance per week after 24 hours.

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The illustration contained here, but including the modified forms of those embodiments including portions of the

N embodiments and combinations of elements of different embodiments when within the scope of protection of the following claims.

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Claims (10)

1. Polymeric composition, characterized by the fact that it comprises: a vinyl chloride resin; about 10% by weight to about 90% by weight of an epoxidized fatty acid ester; and a heat stabilizing composition containing a first metal salt, a second metal salt and a β-diacetone. 2. Polymeric composition according to claim 1, characterized in that the epoxidated fatty acid ester has an oxirane index of about 3% by weight to about 12% by weight. Polymeric composition according to either of claims 1 or 2, characterized in that the epoxidated fatty acid has an iodine number from 0 to less than 5. Polymer composition according to any one of claims 1 to 3, characterized in that the epoxidated fatty acid is an epoxidized soybean oil. Polymeric composition according to any one of claims 1 to 4, characterized in that the heat stabilizing composition comprises two different metals, each metal selected from the group consisting of lithium, sodium, potassium, magnesium, calcium, strontium, barium, zinc, aluminum and tin. Polymer composition according to any one of claims 1 to 5, characterized in that the first metal salt comprises zinc and the second metal salt comprises a metal selected from the group consisting of barium and calcium. Polymeric composition according to any one of claims 1 to 6, characterized in that the heat stabilizing composition comprises a B-diacetone selected from the group consisting of dibenzoylmethane, stearoylbenzoylmethane, palmitoyl benzoyl methane, and combinations thereof. 8. Polymer composition according to any one of claims 1 to 7, characterized by the fact that it has a loop spew value of 0-2 P ^ e 2 0 "è. Μ when measured according to ASTM D 3291. Polymer composition according to any one of claims 1 to 8, characterized by the fact that it has a tension elongation retention greater than about 5 30% after 168 hours of heat acting at 136 ° C when measured according to ASTM D 638. 10. Coated conductor, characterized by the fact that it comprises: a conductor; and a coating on the conductor, the conductor comprising a polymeric composition 10 comprising: (i) a vinyl chloride resin; (ii) about 10% by weight to about 90% by weight of an epoxidized fatty acid ester; and (iii) a heat stabilizing composition comprising a first metal salt, a second metal salt and an 8-15 diacetone. V