US20100029837A1 - Copolyetherester compositions and articles made from these - Google Patents

Copolyetherester compositions and articles made from these Download PDF

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US20100029837A1
US20100029837A1 US12/512,062 US51206209A US2010029837A1 US 20100029837 A1 US20100029837 A1 US 20100029837A1 US 51206209 A US51206209 A US 51206209A US 2010029837 A1 US2010029837 A1 US 2010029837A1
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copolyetherester
ester units
chain ester
poly
composition
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Robert J. Palmer
Judith Alison Peacock
David J. Wrigley
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EIDP Inc
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EI Du Pont de Nemours and Co
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    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G69/00—Macromolecular compounds obtained by reactions forming a carboxylic amide link in the main chain of the macromolecule
    • C08G69/02—Polyamides derived from amino-carboxylic acids or from polyamines and polycarboxylic acids
    • C08G69/26—Polyamides derived from amino-carboxylic acids or from polyamines and polycarboxylic acids derived from polyamines and polycarboxylic acids
    • C08G69/265—Polyamides derived from amino-carboxylic acids or from polyamines and polycarboxylic acids derived from polyamines and polycarboxylic acids from at least two different diamines or at least two different dicarboxylic acids
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L77/00—Compositions of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Compositions of derivatives of such polymers
    • C08L77/06—Polyamides derived from polyamines and polycarboxylic acids
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G69/00—Macromolecular compounds obtained by reactions forming a carboxylic amide link in the main chain of the macromolecule
    • C08G69/02—Polyamides derived from amino-carboxylic acids or from polyamines and polycarboxylic acids
    • C08G69/26—Polyamides derived from amino-carboxylic acids or from polyamines and polycarboxylic acids derived from polyamines and polycarboxylic acids
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G69/00—Macromolecular compounds obtained by reactions forming a carboxylic amide link in the main chain of the macromolecule
    • C08G69/02—Polyamides derived from amino-carboxylic acids or from polyamines and polycarboxylic acids
    • C08G69/36—Polyamides derived from amino-carboxylic acids or from polyamines and polycarboxylic acids derived from amino acids, polyamines and polycarboxylic acids
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/01—Use of inorganic substances as compounding ingredients characterized by their specific function
    • C08K3/013—Fillers, pigments or reinforcing additives
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00—Use of organic ingredients
    • C08K5/0008—Organic ingredients according to more than one of the "one dot" groups of C08K5/01 - C08K5/59
    • C08K5/005—Stabilisers against oxidation, heat, light, ozone
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00—Use of organic ingredients
    • C08K5/04—Oxygen-containing compounds
    • C08K5/05—Alcohols; Metal alcoholates
    • C08K5/053—Polyhydroxylic alcohols
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00—Use of organic ingredients
    • C08K5/04—Oxygen-containing compounds
    • C08K5/06—Ethers; Acetals; Ketals; Ortho-esters
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00—Use of organic ingredients
    • C08K5/04—Oxygen-containing compounds
    • C08K5/13—Phenols; Phenolates
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00—Use of organic ingredients
    • C08K5/16—Nitrogen-containing compounds
    • C08K5/17—Amines; Quaternary ammonium compounds
    • C08K5/18—Amines; Quaternary ammonium compounds with aromatically bound amino groups
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L67/00—Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
    • C08L67/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
    • C08L67/03—Polyesters derived from dicarboxylic acids and dihydroxy compounds the dicarboxylic acids and dihydroxy compounds having the carboxyl- and the hydroxy groups directly linked to aromatic rings
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L77/00—Compositions of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Compositions of derivatives of such polymers
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/13—Hollow or container type article [e.g., tube, vase, etc.]
    • Y10T428/1352—Polymer or resin containing [i.e., natural or synthetic]
    • Y10T428/139—Open-ended, self-supporting conduit, cylinder, or tube-type article

Definitions

  • the present invention relates to copolyetherester compositions having improved high temperature aging properties, and articles made from them.
  • thermoplastic materials in applications such as components for motorized vehicles and electrical/electronic devices.
  • High temperatures may be routinely reached in the under-hood areas of vehicles and inside laptops, cell phones, etc.
  • Such high temperature resistant structures have reduced heat aging, a phenomenon that occurs to plastic parts when exposed to high temperatures for prolonged periods and is a decrease in the mechanical properties of the constituent polymers because of thermo-oxidation.
  • heat stabilizers also referred to as antioxidants
  • Such heat stabilizers include, for example, hindered phenol antioxidants, amine antioxidants and phosphorus-based antioxidants.
  • EP 1041109 discloses a polyamide composition
  • a polyamide composition comprising a polyamide resin, a polyhydric alcohol having a melting point of 150 to 280° C., that has good fluidity and mechanical strength and is useful in injection welding techniques.
  • U.S. Pat. No. 4,205,158 discloses the formation of a copolyetherester including a polyhydric alcohol branching agent.
  • copolyetherester compositions do not perform well when exposed to high temperatures. There remains a need for lower-cost, more effective heat resistant copolyetherester elastomer compositions for making molded or extruded thermoplastic articles exposed to high temperatures long-term, such as achieved under vehicle hoods and in electrical/electronics devices.
  • copolyetherester compositions comprising a melt-mixed blend of
  • G is a divalent radical remaining after the removal of terminal hydroxy groups from a poly(alkylene oxide) glycol that has a number average molecular weight of about 400 to about 6000;
  • thermoplastic articles comprising a melt-mixed blend of the copolyetherester composition(s) described herein, wherein 2 mm test bars
  • high-temperature refers to a temperature at or about 150° C.
  • melt-mixed blend is a known term of art and refers to a result whereby all polymeric components of the compositions described herein are well-dispersed within each other and all of the non-polymeric ingredients are homogeneously dispersed in the polymer matrix.
  • the term “high heat stability”, as applied to a copolyetherester composition described herein or to an article made from the composition, refers to the retention of strain at break of 2 mm molded test bars that comprise the composition and that have been exposed to air oven aging (AOA) conditions in an oven at a test temperature of 150° C. for a test period of 120 hours, in an atmosphere of air, and then tested according to ISO 527-2/5A method.
  • AOA air oven aging
  • the term “about” refers to an approximation of the stated measurement such that one of skill in the art would recognize that the approximation was close enough to the stated measurement as to be equivalent to the stated measurement.
  • high heat stability means that the molded 2 mm test bars on average, meet or exceed a retention of tensile strain at break of 50% when exposed to the AOA conditions disclosed above. Compositions described herein which exhibit a higher retention of strain at break for a given exposure temperature and time period have better heat stability.
  • the term “retention of tensile strain at break” corresponds to the percentage of the strain at break after heat aging, relative to the tensile strain at break value of unexposed control bars, which is considered to be 100%.
  • blend and “mixture” are known terms of art and refer to a combining of entities to produce a result that contains the blended/mixed entities.
  • copolyetheresters useful in the compositions described herein are one or more copolyetherester(s) that have a multiplicity of recurring long-chain ester units and short-chain ester units joined head-to-tail through ester linkages, said long-chain ester units being represented by formula (I):
  • long-chain ester units as applied to units in a polymer chain refers to the product of a reaction of a long-chain glycol with a dicarboxylic acid.
  • Suitable long-chain glycols are poly(alkylene oxide)glycols having terminal (or as nearly terminal as possible) hydroxy groups and having a number average molecular weight of from about 400 to about 6000, and preferably from about 600 to about 3000.
  • Preferred poly(alkylene oxide)glycols include poly(tetramethylene oxide)glycol, poly(trimethylene oxide)glycol, poly(propylene oxide)glycol, poly(ethylene oxide)glycol, copolymer glycols of these alkylene oxides, and block copolymers such as ethylene oxide-capped poly(propylene oxide)glycol. Mixtures of two or more of these glycols can be used.
  • short-chain ester units as applied to units in a polymer chain of the copolyetheresters described herein refers to low molecular weight compounds, or polymer chain units, that have molecular weights less than about 550 and which are made by reacting a low molecular weight diol or a mixture of diols (molecular weight below about 250) with a dicarboxylic acid to form ester units represented by Formula (II) above.
  • the low molecular weight diols that react to form short-chain ester units suitable for use for preparing copolyetheresters are acyclic, alicyclic and aromatic dihydroxy compounds.
  • Preferred compounds are diols with about 2-15 carbon atoms such as ethylene, propylene, isobutylene, tetramethylene, 1,4-pentamethylene, 2,2-dimethyltrimethylene, hexamethylene and decamethylene glycols, dihydroxycyclohexane, cyclohexane dimethanol, resorcinol, hydroquinone, 1,5-dihydroxynaphthalene, etc.
  • diols are aliphatic diols containing 2-8 carbon atoms, and a more preferred diol is 1,4-butanediol. Included among the bisphenols which can be used are bis(p-hydroxy)diphenyl, bis(p-hydroxyphenyl)methane, and bis(p-hydroxyphenyl)propane. Equivalent ester-forming derivatives of diols are also useful. For example, ethylene oxide or ethylene carbonate can be used in place of ethylene glycol or resorcinol diacetate can be used in place of resorcinol). Although the term diol as used herein includes equivalent ester-forming derivatives, molecular weight requirements pertain to the corresponding diols and not to their derivatives.
  • Dicarboxylic acids that may be reacted with long-chain glycols and low molecular weight diols to produce the copolyetheresters include aliphatic, cycloaliphatic or aromatic dicarboxylic acids of a low molecular weight, i.e., having a molecular weight of less than about 300.
  • dicarboxylic acids includes functional equivalents of dicarboxylic acids and includes those that have two carboxyl functional groups and that react similarly as dicarboxylic acids with glycols and diols to form copolyetherester polymers.
  • Such functional equivalents include esters and ester-forming derivatives, such as acid halides and anhydrides.
  • aliphatic dicarboxylic acids refers to carboxylic acids having two carboxyl groups, with each group attached to a saturated carbon atom. If the carbon atom to which the carboxyl group is attached is saturated and in a ring, the acid is cycloaliphatic. Aliphatic or cycloaliphatic acids having conjugated unsaturation often cannot be used because of homopolymerization. However, some unsaturated acids, such as maleic acid, may be used.
  • aromatic dicarboxylic acids are dicarboxylic acids having two carboxyl groups each attached to a carbon atom in a carbocyclic aromatic ring structure. It is not necessary that both functional carboxyl groups be attached to the same aromatic ring. When more than one ring is present, the functional carboxyl groups can be joined by aliphatic or aromatic divalent radicals or divalent radicals such as —O— or —SO 2 —.
  • Useful aliphatic and cycloaliphatic acids include, but are not limited to, sebacic acid; 1,3-cyclohexane dicarboxylic acid; 1,4-cyclohexane dicarboxylic acid; adipic acid; glutaric acid; 4-cyclohexane-1,2-dicarboxylic acid; 2-ethylsuberic acid; cyclopentanedicarboxylic acid decahydro-1,5-naphthylene dicarboxylic acid; 4,4′-bicyclohexyl dicarboxylic acid; decahydro-2,6-naphthylene dicarboxylic acid; 4,4′-methylenebis(cyclohexyl)carboxylic acid; and 3,4-furan dicarboxylic acid.
  • Preferred acids are cyclohexane-dicarboxylic acids and adipic acid.
  • Aromatic dicarboxylic acids include, but are not limited to, phthalic, terephthalic and isophthalic acids; bibenzoic acid; substituted dicarboxy compounds with two benzene nuclei such as bis(p-carboxyphenyl)methane; p-oxy-1,5-naphthalene dicarboxylic acid; 2,6-naphthalene dicarboxylic acid; 2,7-naphthalene dicarboxylic acid; 4,4′-sulfonyl dibenzoic acid and C 1 -C 12 alkyl and ring substitution derivatives of these, such as halo, alkoxy, and aryl derivatives. Only when an aromatic dicarboxylic acid is used may hydroxyl acids such as p-(beta-hydroxyethoxy)benzoic acid also be used.
  • Aromatic dicarboxylic acids are preferred for the copolyetherester compositions described herein, particularly those with 8-16 carbon atoms and more particularly, terephthalic acid either alone or with a mixture of phthalic and/or isophthalic acids.
  • copolyetherester compositions described herein preferably comprise about 15 to about 99 weight percent short-chain ester units corresponding to Formula (II) above, the remaining weight percent comprising long-chain ester units corresponding to Formula (I) above.
  • These copolyetherester compositions more preferably comprise about 20 to about 95 weight percent, and even more preferably about 25 to about 60 weight percent short-chain ester units, with the remaining weight percent comprising long-chain ester units.
  • at least 50 mole percent, and more preferably at least 70 mol percent are diradicals represented by R in Formulae (I) and (II) above are 1,4-phenylene radicals.
  • At least about 70% mole percent, 80 mole percent, and most preferably, 90 to 100 mole percent of the groups represented by D in Formula (II) are 1,4-butylene radicals.
  • a mixture of more than one copolyetherester may be used in these compositions.
  • the weight percent of the short-chain units and the weight percent of the long-chain units of each copolyetherester need not be the values disclosed above.
  • one copolyetherester may contain 60 weight percent short-chain ester units and the other copolyetherester may contain 30 weight percent short-chain ester units.
  • the composition has a weighted average of 45 weight percent short-chain ester units for both copolyestheresters, which does fall within the values disclosed above for these compositions.
  • any mixture of copolyether esters must conform to the weight percent values disclosed above on a weighted average basis.
  • the copolyetherester compositions described herein are prepared from esters or mixtures of esters of terephthalic acid and isophthalic acid, 1,4-butanediol and poly(alkylene oxide)glycols selected from the group consisting of poly(tetramethylene oxide)glycol, poly(trimethylene oxide)glycol, ethylene oxide-capped poly(propylene oxide)glycol, and mixtures of these. More preferably, the copolyetherester elastomers are prepared from esters of terephthalic acid, e.g. dimethylterephthalate, 1,4-butanediol and poly(tetramethylene ether)glycol.
  • copolyetherester compositions described herein may be made by polymerization methods known to those skilled in the art, such as, using a conventional ester interchange reaction.
  • a preferred method involves heating the ester of an aromatic acid, e.g., dimethyl ester of terephthalic acid, with the poly(alkylene oxide)glycol and a molar excess of the low molecular weight diol, 1,4-butanediol, in the presence of a catalyst, followed by distilling off methanol formed by the interchange reaction. Heating is continued until methanol evolution is complete.
  • catalyst and glycol excess the polymerization is complete within a few minutes to a few hours. This method results in the preparation of a low molecular weight prepolymer which can be further processed to a high molecular weight copolyetherester by the methods below.
  • Such prepolymers may also be prepared by a number of alternate esterification or ester interchange methods.
  • the long-chain glycol can be reacted with a high or low molecular weight short-chain ester homopolymer or copolymer in the presence of catalyst until randomization occurs.
  • the short-chain ester homopolymer or copolymer can be prepared by ester interchange from either the dimethyl esters and low molecular weight diols as disclosed above, or from the free acids with the diol acetates.
  • the short-chain ester copolymer can be prepared by direct esterification from appropriate acids, anhydrides or acid chlorides, for example, with diols or by other processes such as reaction of the acids with cyclic ethers or carbonates.
  • the prepolymer may also be prepared by carrying out these methods in the presence of the long-chain glycol.
  • the resulting prepolymer is then further processed to high molecular weight by distillation of the excess of short-chain diol by a method known as “polycondensation”. Additional ester interchange occurs during this distillation to increase the molecular weight and to randomize the arrangement of the copolyetherester units. Best results are usually obtained if this final distillation, i.e., polycondensation, is carried out at less than 1 mm pressure and 240-260° C.
  • antioxidants such as 1,6-bis-[3,5-di-tert-butyl-4-hydroxyphenol)propionamido]-hexane or 1,3,5-trimethyl-2,4,6-tris[3,5-di-tert-butyl-4-hydroxybenzyl]benzene.
  • antioxidants such as 1,6-bis-[3,5-di-tert-butyl-4-hydroxyphenol)propionamido]-hexane or 1,3,5-trimethyl-2,4,6-tris[3,5-di-tert-butyl-4-hydroxybenzyl]benzene.
  • Both batch and continuous methods can be used for any stage of copolyetherester polymer preparation.
  • Polycondensation of prepolymer may also be accomplished in the solid phase by heating divided solid prepolymer in a vacuum or in a stream of inert gas to remove liberated low molecular weight diol. This method can reduce thermal degradation because it must be used at temperatures below the softening point of the prepolymer.
  • the copolyetherester may be present in the copolyetherester compositions described herein at about 50 to about 99.75 weight percent, and preferably 60, 70 and 80 to 99.75 weight percent, based upon the total weight of the composition.
  • the copolyetherester compositions described herein comprise from at or about 0.25 to at or about 15 weight percent of one or more polyhydric alcohols having more than two hydroxyl groups, preferably from at or about 0.5 to at or about 10 weight percent; more preferably, at or about 0.5 to at or about 7 weight percent; and still most preferably from 0.5 weight percent to at or about 5 weight percent, wherein the weight percentages are based on the total weight of the composition.
  • Polyhydric alcohols may be selected from aliphatic hydroxylic compounds containing more than two hydroxyl groups, aliphatic-cycloaliphatic compounds containing more than two hydroxyl groups, cycloaliphatic compounds containing more than two hydroxyl groups, aromatic and saccharides.
  • An aliphatic chain in the polyhydric alcohol can include not only carbon atoms but also one or more hetero atoms selected, for example, from nitrogen, oxygen and sulfur atoms.
  • a cycloaliphatic ring present in the polyhydric alcohol can be monocyclic or part of a bicyclic or polycyclic ring system and may be carbocyclic or heterocyclic.
  • a heterocyclic ring present in the polyhydric alcohol can be monocyclic or part of a bicyclic or polycyclic ring system and may include one or more hetero atoms which may be selected, for example, from nitrogen, oxygen and sulfur atoms.
  • the one or more polyhydric alcohols may contain one or more substituents, such as ether, carboxylic acid, carboxylic acid amide or carboxylic acid ester groups.
  • polyhydric alcohol containing more than two hydroxyl groups include, without limitation, triols, such as glycerol, trimethylolpropane, 2,3-di-(2′-hydroxyethyl)-cyclohexan-1-ol, hexane-1,2,6-triol, 1,1,1-tris-(hydroxymethyl)ethane, 3-(2′-hydroxyethoxy)-propane-1,2-diol, 3-(2′-hydroxypropoxy)-propane-1,2-diol, 2-(2′-hydroxyethoxy)-hexane-1,2-diol, 6-(2′-hydroxypropoxy)-hexane-1,2-diol, 1,1,1-tris-[(2′-hydroxyethoxy)-methyl]-ethane, 1,1,1-tris-[(2′-hydroxypropoxy)-methyl]-propane, 1,1,1-tris-(4′-hydroxyphenyl)-ethane, 1,1,1,
  • Alternative polyhdric alcohols include polyhydric polymers selected from the group consisting of ethylene/vinyl alcohol copolymer and poly(vinyl alcohol) having a weight average molecular weight of (M w ) of at least 2000; and preferably 5000 to 50,000; as measured by gel permeation chromatography (GPC).
  • the ethylene/vinyl alcohol copolymer has a vinyl alcohol content of 10 to 90 mol % and preferably 30 to 80 mol %, 40 to 75 mol %, 50 to 75 mol %, and 50 to 60 mol %, wherein the remainder mol % is ethylene.
  • the vinyl alcohol polymer has a degree of hydrolysis preferably greater than 85%, and preferably greater than 89%.
  • the polyhydric alcohol is selected fro the group consisting of pentaerythritol, dipentaerythritol, tripentaerythritol, di-trimethylopropane, D-mannitol, D-sorbitol and xylitol. More preferably, the polyhydric alcohol used in the compositions described herein is dipentaerythritol and/or pentaerythritol.
  • Additional additives may be preferably present in about 0.1 to about 30 weight percent, based on the total weight of the composition.
  • a preferred additive is carbon black, which may be preferably present in about 0.1 to about 4 weight percent, or more preferably in about 0.25 to about 3.5 weight percent, or yet more preferably in about 0.5 to about 3 weight percent, based on the total weight of the composition.
  • fillers other than carbon black are used, they are present in about 0.1 to 10 weight percent, and preferably 0.1 to 5 weight percent.
  • ionomer resins refers to a polymer that comprises ionic groups that are alkali metal ion carboxylates, for example, sodium carboxylates.
  • Such polymers are generally produced by partially or fully neutralizing the carboxylic acid groups of precursor acid copolymers, as discussed above, for example, by reaction with a base.
  • an alkali metal ionomer is a sodium ionomer (or sodium neutralized ionomer), for example a copolymer of ethylene and methacrylic acid wherein all or a portion of the carboxylic acid groups of the copolymerized methacrylic acid units are in the form of sodium carboxylates.
  • the ionomer resin comprises a polymer that is an ionic, neutralized, or partially neutralized, derivative of a precursor acid copolymer.
  • the precursor acid copolymer comprises copolymerized units of an ⁇ -olefin having 2 to 10 carbons and about 5 to about 30 wt %, about 5 to 25 wt %, or about 10 to about 25 wt %, of copolymerized units of an ⁇ , ⁇ -ethylenically unsaturated carboxylic acid having 3 to 8 carbons, based on the total weight of the precursor acid copolymer.
  • Suitable ⁇ -olefin comonomers include, but are not limited to, ethylene, propylene, 1-butene, 1-pentene, 1-hexene, 1-heptene, 3 methyl-1-butene, 4-methyl-1-pentene, and the like and mixtures of two or more of these ⁇ -olefins.
  • the ⁇ -olefin is ethylene.
  • Suitable ⁇ , ⁇ -ethylenically unsaturated carboxylic acid comonomers include, but are not limited to, acrylic acids, methacrylic acids, itaconic acids, maleic acids, maleic anhydrides, fumaric acids, monomethyl maleic acids, and mixtures of two or more of these acid comonomers.
  • the ⁇ , ⁇ -ethylenically unsaturated carboxylic acid is selected from acrylic acids, methacrylic acids, and mixtures of two or more acrylic acids or methacrylic acids.
  • the precursor acid copolymers are neutralized with a base so that their carboxylic acid groups react to form carboxylate groups.
  • the precursor acid copolymers are neutralized to a level of about 40% to about 90%, or about 40% to about 70%, or about 43% to about 60%, based on the total carboxylic acid content of the precursor acid copolymers as calculated for the non-neutralized precursor acid copolymers.
  • the precursor acid copolymers may be neutralized by any conventional method, such as those disclosed in U.S. Pat. Nos. 3,404,134 and 6,518,365.
  • Ionomer resins particularly useful are available from E.I. du Pont de Nemours and Co., Wilmington, Del., under the Surlyn® resin brand.
  • compositions described herein may comprise one or more ionomer resins that comprise an ethylene/methacrylic acid copolymer having about 5 to 25 wt % methacrylic acid repeat units based on the weight of the ethylene/methacrylic acid copolymer; and more particularly, the ethylene/methacrylic acid copolymer has a neutralization ratio of 0.40 to about 0.70.
  • the ethylene copolymer comprises glycidyl esters and has the formula E/X/Y where
  • R 3 is glycidyl
  • R 1 is R 1 is H, CH 3 or C 2 H 5 .
  • ethylene copolymers comprising glycidyl esters
  • Evaloy® EP1001 resin from E.I. du Pont de Nemours and Company, Wilmington, Del.
  • Bondfast E® copolymer available from Sumitomo Chemical Co. Ltd.
  • Suitable polyester modifiers include poly(butylene terephthalate)s.
  • thermoplastic articles having high heat stability over about 120 hours at 150° C comprise a melt-mixed blend of the copolyetherester compositions described herein, wherein 2 mm test bars prepared from said copolyetherester composition according to ISO 527-2/5A (2 mm test bars according to type 5A) method, and exposed in an atmosphere of air at a test temperature of 150° C. for a test period of about 120 hours, and tested according to ISO 527-1 have a retention of tensile strain at break of at least 50 percent, and preferably at least 60, 70, and 80 percent, as compared with that of an unexposed control having identical composition and shape.
  • the retention of tensile strain at break is an appropriate measure of the thermal stability of molded thermoplastic articles of polymer elastomer compositions having no reinforcing agent and little or no filler present in the composition.
  • thermoplastic article comprising the melt-mixed blend of the copolyetherester composition has a retention of tensile strain at break of at least 60, 70, 80 and, most preferably, 90 percent as compared with that of an unexposed control.
  • any melt-mixing method may be used to combine the polymeric components and non-polymeric components.
  • the polymeric components and non-polymeric ingredients may be added to a melt mixer, such as, a single or twin-screw extruder; a blender; a kneader; or a Banbury mixer, either all at once through a single step addition or in a stepwise fashion, and then melt-mixed.
  • a melt mixer such as, a single or twin-screw extruder; a blender; a kneader; or a Banbury mixer, either all at once through a single step addition or in a stepwise fashion, and then melt-mixed.
  • a portion of the polymeric components and/or a portion of the non-polymeric components are added together and melt-mixed, followed by subsequent additions and melt mixing of the remaining components together until all components are mixed.
  • compositions described herein may be formed into articles using methods known to those skilled in the art, such as, for example, injection molding, blow molding, extrusion, thermoforming, melt casting, rotational molding, and slush molding. These compositions may be over molded onto an article made from a different material, extruded into the form of films, sheets, tubing and other geometric shapes, or formed into monofilaments.
  • Articles comprising the compositions described herein may be used in, or to form part of, air bag doors; automotive dashboard components; components of a motorized engine; other automotive parts; tubing; components for furniture; footwear components; roof liners; outdoor apparel; water management system components; and cable and wire jacketing.
  • DPE refers to dipentaerythritol that was from Perstorp Speciality Chemicals AB, Perstorp, Sweden as Di-Penta 93.

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  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Proteomics, Peptides & Aminoacids (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Polyamides (AREA)
  • Manufacture Of Macromolecular Shaped Articles (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
US12/512,062 2008-07-30 2009-07-30 Copolyetherester compositions and articles made from these Abandoned US20100029837A1 (en)

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US12/512,062 Abandoned US20100029837A1 (en) 2008-07-30 2009-07-30 Copolyetherester compositions and articles made from these
US12/512,172 Abandoned US20100029821A1 (en) 2008-07-30 2009-07-30 Heat resistant thermoplastic articles including co-stabilizers
US12/512,109 Abandoned US20100029819A1 (en) 2008-07-30 2009-07-30 Heat resistant molded or extruded thermoplastic articles
US12/512,195 Abandoned US20100028580A1 (en) 2008-07-30 2009-07-30 Heat resistant thermoplastic articles
US12/512,125 Expired - Fee Related US8445574B2 (en) 2008-07-30 2009-07-30 Heat resistant thermoplastic articles including polyhydroxy polymers
US13/456,517 Abandoned US20120208954A1 (en) 2008-07-30 2012-04-26 Copolyetherester compositions and articles made from these
US13/615,967 Abandoned US20130072608A1 (en) 2008-07-30 2012-09-14 Heat resistant thermoplastic articles including polyhydroxy polymers
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US12/512,195 Abandoned US20100028580A1 (en) 2008-07-30 2009-07-30 Heat resistant thermoplastic articles
US12/512,125 Expired - Fee Related US8445574B2 (en) 2008-07-30 2009-07-30 Heat resistant thermoplastic articles including polyhydroxy polymers
US13/456,517 Abandoned US20120208954A1 (en) 2008-07-30 2012-04-26 Copolyetherester compositions and articles made from these
US13/615,967 Abandoned US20130072608A1 (en) 2008-07-30 2012-09-14 Heat resistant thermoplastic articles including polyhydroxy polymers
US13/644,536 Abandoned US20130053483A1 (en) 2008-07-30 2012-10-04 Heat resistant thermoplastic articles including co-stabilizers

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