EP2758471A1 - Matières à mouler en polyamide - Google Patents

Matières à mouler en polyamide

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Publication number
EP2758471A1
EP2758471A1 EP12761580.5A EP12761580A EP2758471A1 EP 2758471 A1 EP2758471 A1 EP 2758471A1 EP 12761580 A EP12761580 A EP 12761580A EP 2758471 A1 EP2758471 A1 EP 2758471A1
Authority
EP
European Patent Office
Prior art keywords
components
component
mixtures
weight
acid
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP12761580.5A
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German (de)
English (en)
Inventor
Sachin Jain
Sameer Nalawade
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BASF SE
Original Assignee
BASF SE
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Filing date
Publication date
Application filed by BASF SE filed Critical BASF SE
Priority to EP12761580.5A priority Critical patent/EP2758471A1/fr
Publication of EP2758471A1 publication Critical patent/EP2758471A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • C08L77/02—Polyamides derived from omega-amino carboxylic acids or from lactams thereof
    • 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
    • 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
    • C08K2201/00—Specific properties of additives
    • C08K2201/002—Physical properties
    • C08K2201/004—Additives being defined by their length
    • 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
    • C08K2201/00—Specific properties of additives
    • C08K2201/014—Additives containing two or more different additives of the same subgroup in C08K
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2203/00—Applications
    • C08L2203/12—Applications used for fibers

Definitions

  • thermoplastic molding compositions comprising:
  • Bi 40 to 80% by weight, based on the total weight of the components Bi and B2, of at least one succinic, adipic, azelaic, sebacic or brassylic acid or their ester-forming derivatives or mixtures thereof,
  • B 4 0 to 1 wt .-%, based on component B, of a branching agent, B 5 ) 0 to 2 wt .-%, based on component B, of a chain extender, 0 to 2 wt .-%, based on component B. , other additives;
  • the invention further relates to a method for increasing the notched impact strength of polyamides, and the use of the aforementioned molding compositions for the production of fibers, films and moldings and fibers, films and moldings obtainable from these Formmas- sen.
  • plasticizers low molecular weight substances
  • the common polyamides 6 and 66 are incompatible with most plasticizers.
  • special plasticizers such as N-substituted aromatic sulfonamides they are limited tolerated. Therefore, plasticizers for polyamides in general, and in particular for polyamide types 6 and 66, play no particular role.
  • the aim of the present invention was therefore to find a plasticizer which is compatible with the customary polyamides and leads to an improvement of simultaneously the impact behavior and the tensile behavior.
  • polyester B By incorporating from 0.5 to 20% by weight of a polyester B, the impact behavior and tensile behavior of the polyamides can be improved. Polyester B is well tolerated in the stated proportions with the common polyamide types 6 and 66.
  • the molding compositions according to the invention contain from 80 to 99.5, preferably from 85 to 99, and in particular from 85 to 95,% by weight, based on the components A and B, of at least one polyamide.
  • the polyamides of the molding compositions according to the invention generally have a viscosity number of 90 to 350, preferably 1 10 to 240 ml / g, determined in a 0.5 wt .-% solution in 96 wt .-% sulfuric acid at 25 ° C according to ISO 307.
  • Semicrystalline or amorphous resins having a weight average molecular weight of at least 5,000 e.g. U.S. Patents 2,071,250, 2,071,251, 2,130,523, 2,130,948, 2,241,322, 2,312,966, 2,512,606 and 3,393,210 are preferred.
  • Examples include polyamides derived from lactams having 7 to 13 ring members, such as polycaprolactam, polycapryllactam and polylaurolactam and polyamides obtained by reacting dicarboxylic acids with diamines.
  • dicarboxylic acids alkanedicarboxylic acids having 6 to 12, in particular 6 to 10 carbon atoms and aromatic dicarboxylic acids can be used.
  • adipic acid, azelaic acid, sebacic acid, dodecanedioic acid and terephthalic and / or isophthalic acid may be mentioned as acids.
  • Suitable diamines are, in particular, alkanediamines having 6 to 12, in particular 6 to
  • Preferred polyamides are polyhexamethylene adipamide, polyhexamethylene sebacamide and polycaprolactam and copolyamides 6/66, in particular with a proportion of 5 to 95 wt .-% of caprolactam units (for example Ultramid ® C31 BASF SE).
  • Further suitable polyamides are obtainable from ⁇ -aminoalkyl nitriles such as aminocapronitrile (PA 6) and adiponitrile with hexamethylenediamine (PA 66) by so-called direct polymerization in the presence of water, as for example in DE-A 10313681, EP-A 1 198491 and EP 922065.
  • polyamides which are e.g. are obtainable by condensation of 1, 4-diaminobutane with adipic acid at elevated temperature (polyamide 4.6). Manufacturing processes for polyamides of this structure are known e.g. in EP-A 38 094, EP-A 38 582 and EP-A 39 524 described.
  • polyamides which are obtainable by copolymerization of two or more of the abovementioned monomers or mixtures of a plurality of polyamides are suitable, the mixing ratio being arbitrary. Particular preference is given to mixtures of polyamide 66 with other polyamides, in particular copolyamides 6/66. Furthermore, such partially aromatic copolyamides as PA 6 / 6T and PA 66 / 6T have proven to be particularly advantageous, the triamine content is less than 0.5, preferably less than 0.3 wt .-% (see EP-A 299 444). Further high-temperature-resistant polyamides are known from EP-A 19 94 075 (PA 6T / 6I / MXD6).
  • the production of the preferred partly aromatic copolyamides with a low triamine content can be carried out by the processes described in EP-A 129 195 and 129 196.
  • PA 46 tetramethylenediamine, adipic acid
  • PA 66 hexamethylenediamine, adipic acid
  • PA 610 hexamethylenediamine, sebacic acid
  • PA 612 hexamethylenediamine, decanedicarboxylic acid
  • PA 613 hexamethylenediamine, undecanedicarboxylic acid
  • PA 9T 1, 9-nonanediamine, terephthalic acid
  • PA MXD6 m-xylylenediamine, adipic acid
  • PA 61 hexamethylenediamine, isophthalic acid
  • PA 6-3-T trimethylhexamethylenediamine, terephthalic acid
  • PA 6 / 6T (see PA 6 and PA 6T)
  • PA 6/66 (see PA 6 and PA 66)
  • PA 6/12 see PA 6 and PA 12
  • PA 66/6/610 see PA 66, PA 6 and PA 610)
  • PA 6I / 6T see PA 61 and PA 6T
  • PA PA PACM 12 diaminodicyclohexylmethane, laurolactam
  • PA 6I / 6T / PACM such as PA 6I / 6T + diaminodicyclohexylmethane
  • PA PDA-T phenylenediamine, terephthalic acid
  • Component B in the molding compositions according to the invention in 0.5 to 20, preferably 1 to 15, and particularly preferably 5 to 15 wt .-%, based on the components A and B, included.
  • Partaromatic polyesters consist of aliphatic diols and aliphatic and aromatic dicarboxylic acids.
  • Suitable partially aromatic polyesters include linear non-chain extended polyesters (WO 92/09654).
  • aliphatic / aromatic polyesters of butanediol, terephthalic acid and aliphatic C 4 -C 8 -dicarboxylic acids such as succinic acid, glutaric acid, adipic acid, suberic acid, azelaic acid, sebacic acid and brassylic acid (for example as described in WO 2006/097353 to 56) are suitable mixing partners.
  • Chain-extended and / or branched partially aromatic polyesters are preferably used as component B. The latter are known from the aforementioned documents WO 96/15173 to 15176 or WO 98/12242, to which reference is expressly made. Mixtures of different partially aromatic polyesters are also possible.
  • the biodegradable, aliphatic-aromatic copolyester B containing:
  • Bi 40 to 80% by weight, based on the total weight of the components Bi and B2, of at least one succinic, adipic, azelaic, sebacic or brassylic acid or their ester-forming derivatives or mixtures thereof,
  • B 4 0 to 1% by weight, based on component B, of a branching agent
  • B 5 0 to 2% by weight, based on component B, of a chain extender
  • component B 6 from 0 to 2% by weight, based on component B, of further additives.
  • Preferably used aliphatic-aromatic polyesters B include:
  • Bi 40 to 60% by weight, based on the total weight of the components Bi and B2, of at least one succinic, adipic, azelaic, sebacic or brassylic acid or their ester-forming derivatives or mixtures thereof,
  • aliphatic dicarboxylic acids are preferably succinic acid, adipic acid and particularly preferably sebacic acid.
  • the diacids mentioned have the advantage that they are also available as renewable raw materials.
  • the synthesis of the described copolyester B takes place according to the processes described in WO-A 92/09654, WO-A 96/15173 or preferably in WO-A 09/127555 and WO-A 09/127556, preferably in a two-stage reaction cascade.
  • the dicarboxylic acid derivatives are reacted together with the diol in the presence of a transesterification catalyst to form a prepolyester.
  • This prepolyester generally has a viscosity number (CV) of 50 to 100 ml / g, preferably 60 to 80 ml / g.
  • the catalysts used are usually zinc, aluminum and in particular titanium catalysts.
  • Titanium catalysts such as tetra (isopropyl) orthotitanate and in particular tetrabutyl orthotitanate (TBOT) have the advantage over the tin, antimony, cobalt and lead catalysts frequently used in the literature, such as, for example, tin dioctanate, that residual amounts of catalyst remaining in the product or as a secondary product of the catalyst are less toxic. This fact is particularly important in the case of biodegradable polyesters, since they can go directly into the environment via composting.
  • TBOT tetra (isopropyl) orthotitanate
  • TBOT tetrabutyl orthotitanate
  • polyesters B are then prepared in a second step according to the processes described in WO-A 96/15173 and EP-A 488 617.
  • the prepolyester is reacted with chain extenders B 5 , for example with diisocyanates or with epoxy-containing polymethacrylates in a chain extension reaction to give a polyester having a viscosity number according to DIN 53728 (VZ) of 150 to 320 ml_ (cm 3 ) / g, preferably 180 to 250 ml / g ,
  • component B from 0.01 to 2% by weight, preferably from 0.1 to 2.0% by weight and particularly preferably from 0.1 to 1.0% by weight, based on the total weight of component B, of one branching agent (B 4 ) and / or chain extender (B 5 ) selected from the group consisting of: a polyfunctional isocyanate, isocyanurate, oxazoline, epoxide, peroxide, carboxylic anhydride, an at least trifunctional alcohol or an at least trifunctional carboxylic acid used.
  • Suitable chain extenders B 5 are polyfunctional and in particular difunctional isocyanates, isocyanurates, oxazolines, carboxylic anhydride or epoxides.
  • Chain extenders and alcohols or carboxylic acid derivatives having at least three functional groups can also be regarded as branching agent B 4 .
  • Particularly preferred compounds have three to six functional groups. Examples include: tartaric acid, citric acid, malic acid; Trimethylolpropane, trimethylolethane; pentaerythritol; Polyether triols and glycerol, trimesic acid, trimellitic acid, trimellitic anhydride, pyromellitic acid and pyromellitic dianhydride. Preference is given to polyols such as trimethylolpropane, pentaerythritol and in particular glycerol.
  • the components B 4 and B 5 can be built biodegradable polyester with a structural viscosity.
  • the rheological behavior of the melts improves;
  • the biodegradable polyesters are easier to process.
  • the compounds B 5 are shear-thinning, ie the viscosity at higher shear rates becomes lower.
  • the polyesters B generally have a number average molecular weight (Mn) in the range from 10,000 to 100,000, in particular in the range from 15,000 to 75,000 g / mol, preferably in the range from 20,000 to 38,000 g / mol, a weight-average molecular weight (Mw) of 30,000 to 300,000, preferably 60000 to 200,000 g / mol and a Mw / Mn ratio of 1 to 6, preferably 2 to 4 on.
  • the viscosity number is between 150 and 320, preferably from 180 to 250 ml / g (measured according to DI N 53728 in o-dichlorobenzene / phenol (weight ratio 50/50)
  • Melting point is in the range of 85 to 150, preferably in the range of 95 to 140 ° C.
  • the stated polyesters may have hydroxyl and / or carboxyl end groups in any ratio.
  • the abovementioned partially aromatic polyesters can also be end-group-modified.
  • OH end groups can be acid-modified by reaction with phthalic acid, phthalic anhydride, trimellitic acid, trimellitic anhydride, pyromellitic acid or pyromellitic anhydride. Preference is given to polyesters having acid numbers of less than 1.5 mg KOH / g.
  • the biodegradable polyesters B may contain further additives ⁇ known to the person skilled in the art but not essential to the invention.
  • plastics technology such as stabilizers; nucleating agents; Lubricants and release agents such as stearates (especially calcium stearate); Plasticizers such as citric acid esters (especially acetyl tributyl citrate), glyceric acid esters such as triacetylglycerol or ethylglycol derivatives, surfactants such as polysorbates, palmitates or laurates; Waxes such as beeswax or beeswax esters; Antistatic, UV absorber; UV-stabilizer; Antifog agents or dyes.
  • plastics technology such as stabilizers; nucleating agents; Lubricants and release agents such as stearates (especially calcium stearate); Plasticizers such as citric acid esters (especially acetyl tributyl citrate), glyceric acid esters such as
  • the additives are used in concentrations of 0 to 5 wt .-%, in particular 0, 1 to 2 wt .-% based on the polyesters of the invention.
  • the fibrous reinforcing material C is used in amounts of 0 to 60 wt .-%, in particular 5 to 50 wt .-% and particularly preferably 20 to 50 wt .-% based on the components A to D.
  • Preferred fibrous fillers C are carbon fibers, aramid fibers, glass fibers and potassium titanate fibers, glass fibers being particularly preferred as E glass. These are used as rovings in the commercial forms.
  • the glass fibers used according to the invention as a roving have a diameter of 6 to 20 ⁇ m, preferably of 10 to 18 ⁇ m, the cross section of the glass fibers being round, oval or angular.
  • E-glass fibers are used according to the invention. But it can also all other types of glass fiber, such. A, C, D, M, S, R glass fibers or any mixtures thereof or mixtures with E glass fibers are used.
  • the fibrous fillers can be surface-pretreated for better compatibility with the thermoplastics with a silane compound.
  • Suitable silane compounds are those of the general formula
  • n is an integer from 2 to 10, preferably 3 to 4
  • n is an integer from 1 to 5, preferably 1 to 2
  • k is an integer from 1 to 3, preferably 1
  • Preferred silane compounds are aminopropyltrimethoxysilane, aminobutyltrimethoxysilane, aminopropyltriethoxysilane, aminobutyltriethoxysilane and the corresponding silanes which contain a glycidyl group as substituent X.
  • the silane compounds are generally used in amounts of 0.01 to 2, preferably 0.025 to 1, 0 and in particular 0.05 to 0.5 wt .-% (based on C)) for surface coating.
  • Suitable coating agents are based on isocyanates.
  • the additives D are used in amounts of 0 to 10 wt .-%, in particular 0.5 to 5 wt .-%, based on the components A to D.
  • the high weight fractions are particularly suitable for fillers. For example, acicular mineral fillers are suitable.
  • the term "needle-shaped mineral fillers” is understood to mean a mineral filler with a pronounced, needle-like character.
  • An example is acicular wollastonite.
  • the mineral has an L / D (length: diameter) ratio of 8: 1 to 35: 1, preferably 8: 1 to 1: 1: 1.
  • the mineral filler may optionally be pretreated with the silane compounds mentioned above; however, pretreatment is not essential.
  • fillers are kaolin, calcined kaolin, wollastonite, talc and chalk called and additionally platelet or needle-shaped nanofill substances preferably in amounts between 0.1 and 10%.
  • Boehmite, bentonite, montmorillonite, vermicullite, hectorite and laponite are preferably used for this purpose.
  • the platelet-shaped nanofillers according to the prior art are organically modified.
  • the addition of the platelet- or needle-shaped nanofillers to the nanocomposites according to the invention leads to a further increase in the mechanical strength.
  • thermoplastic molding compositions furthermore advantageously contain a lubricant D; from 0 to 3, preferably from 0.05 to 3, preferably from 0.1 to 1, 5 and in particular from 0.1 to 1 wt .-%, based on the total amount of components A to D included.
  • a lubricant D from 0 to 3, preferably from 0.05 to 3, preferably from 0.1 to 1, 5 and in particular from 0.1 to 1 wt .-%, based on the total amount of components A to D included.
  • metal salts Preference is given to aluminum, alkali metal, alkaline earth metal salts or ester or amides of fatty acids having 10 to 44 C atoms, preferably having 14 to 44 C atoms.
  • the metal ions are preferably alkaline earth and aluminum (Al), with calcium (Ca) or magnesium being particularly preferred.
  • Preferred metal salts are Ca-stearate and Ca-montanate as well as Al-stearate. It is also possible to use mixtures of different salts, the mixing ratio being arbitrary.
  • the fatty acids can be 1- or 2-valent. Examples which may be mentioned are pelargonic acid, palmitic acid, lauric acid, margaric acid, dodecanedioic acid, behenic acid and particularly preferably stearic acid, capric acid and montanic acid (mixture of fatty acids having 30 to 40 carbon atoms).
  • the aliphatic alcohols of the esters can be 1 to 4 valent.
  • examples of alcohols are n-butanol, n-octanol, stearyl alcohol, ethylene glycol, propylene glycol, neopentyl glycol, pentaerythritol, with glycerol and pentaerythritol being preferred.
  • the aliphatic amines of the amides can be monohydric to trihydric. Examples of these are stearylamine, ethylenediamine, propylenediamine, hexamethylenediamine, di (6-aminohexyl) amine, with ethylenediamine and hexamethylenediamine being particularly preferred.
  • esters or amides are glycerol distearate, glycerol tristearate, ethylenediamine distearate, glycerol monopalmitate, glycerol trilaurate, glycerol monobehenate and pentaerythritol tetrastearate.
  • thermoplastic molding compositions of the invention may contain conventional processing aids such as stabilizers, antioxidants, further agents against thermal decomposition and decomposition by ultraviolet light, lubricants and mold release agents, colorants such as dyes and pigments, nucleating agents, plasticizers, flame retardants, rubbers, etc.
  • Suitable rubbers for polyamides can be found in PCT / EP 201 1/059546, to which reference is explicitly made in this context.
  • antioxidants and heat stabilizers include phosphites and further amines (eg TAD), hydroquinones, various substituted representatives of these groups and mixtures thereof in concentrations of up to 1% by weight, based on the weight of the thermoplastic molding compositions.
  • TAD phosphites and further amines
  • hydroquinones various substituted representatives of these groups and mixtures thereof in concentrations of up to 1% by weight, based on the weight of the thermoplastic molding compositions.
  • UV stabilizers which are generally used in amounts of up to 2 wt .-%, based on the molding composition, various substituted resorcinols, salicylates, Benzotriazo- le and benzophenones may be mentioned.
  • inorganic pigments such as titanium dioxide, ultramarine blue, iron oxide and carbon black and / or graphite, furthermore organic pigments such as phthalocyanines, quinacridones, perylenes and also dyes such as nigrosine and anthraquinones as colorants.
  • sodium phenylphosphinate, alumina, silica and preferably talc may be used as nucleating agents.
  • Flame retardants include red phosphorus, flame retardants containing P and N, and halogenated flame retardant systems and their synergists.
  • thermoplastic molding compositions according to the invention can be prepared by processes known per se, in which the starting components are mixed in conventional mixing devices, such as screw extruders, Brabender mills or Banbury mills, and then extruded. After extrusion, the extrudate can be cooled and comminuted. Individual components can also be premixed and then the rest of the output Substances are added individually and / or also mixed.
  • the mixing temperatures are usually 230 to 320 ° C.
  • thermoplastic molding compositions according to the invention are distinguished by good processability combined with good mechanical properties, as well as a significantly improved WAB and surface.
  • Cylinder head covers are suitable for the production of fibers, films and moldings of any kind. These are characterized by an excellent impact as well as tensile behavior.
  • dashboards Inside the car, there is a use for dashboards, steering column switches, seat parts, headrests, center consoles, gear components and door modules, in the car exterior for door handles, exterior mirror components, windscreen wiper components, windscreen wiper housings, grilles, roof rails, sunroof frames, engine covers, cylinder head covers, intake manifolds (In particular intake manifold), windscreen wipers and body exterior parts possible.
  • the Charpy notched impact strength was determined at 23 ° C or -30 ° C according to ISO 179-2 / 1 eA.
  • the yield stress, Young's modulus and elongation at break were determined according to ISO 527-2: 1993. The pulling speed was 5 mm / min. feedstocks
  • Component A is a compound having Component A:
  • Ultramid ® B27E Polyamide 6 from BASF SE (CAS: 25038-54-4, density: 1120-1150 g / l, melting point: 220 ° C, Relative viscosity (1% in 96% H 2 S0 4 ): 2.7 ⁇ 0.03)
  • Component B is a compound having Component B:
  • Ecoflex ® C1200 (old product name: Ecoflex FBX ® 701 1): a Polybutylenadipat- coterephthalat from BASF SE (CAS:. 55231 -08-8, viscosity number 180 to 250 cm 3 / g, melting point 1 10 and 1 15 ° C)
  • Component C Component C:
  • Ci TufRov ® 4510. Glass fibers of the company PPG Fiber Glass Europe (E-glass, ASTM D578-98, silanes sizing, 17 micrometer diameter fiber, roving tex-2400 (2.4 g / m))
  • Irganox 98 from BASF SE N, N'-hexanes-1, 6-diylbis [3- (3,5-di-tert-butyl-4-hydroxyphenylpropionamide)], CAS Number: 23128-74-7, Melting point: 156-165 ° C)
  • Diii talc IT from Mondo Minerals (CAS: 14807-96-6, density: 2750 g / l)
  • the specimens used to determine the properties were prepared by means of a Battenfeld 50 injection molding machine.
  • the granules produced under 2) and 3) were melted and pressed with a speed of the screw 100 U / min and residence time 50 s in the tool.
  • the test specimens for the stress tests were produced according to ISO 527-2 / 1 A 5 and the test specimens for the impact measurements according to ISO 179-2 / 1 eA (F).
  • the injection temperature was 260 ° C, the mold temperature 80 ° C.
  • Example 2 with 5 wt .-% of the copolyester B according to the invention had at 23 ° C (-30 ° C) by 32% (7-8%) higher notched impact strength than Comparative Example 1 on.
  • Example 3 with 10 wt .-% of the copolyester B according to the invention had at 23 ° C (-30 ° C) to a 107% (19%) higher notched impact strength than Comparative Example 1 on.
  • Example 3 The tensile properties: elongation at break, tensile strength and modulus of elasticity were improved in Example 3 according to the invention compared with Example 2 and at a level similar to Comparative Example 1V.

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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)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

L'invention concerne des matières à mouler thermoplastiques, contenant : A) de 80 à 99,5 % en poids, rapporté aux composants A et B, d'un polyamide A ; B) de 0,5 à 20 % en poids, rapporté aux composants A et B, d'un copolyester B ayant un indice de viscosité selon DIN 53728 allant de 150 à 320 cm³/g contenant : B1) de 40 à 80 % en poids, rapporté au poids total des composants B1 et B2, d'au moins un acide succinique, adipique, azélaïque, sébacique ou brassylique ou de ses dérivés formant ester ou de leurs mélanges, B2) de 20 à 60 % en poids, rapporté au poids total des composants B1 et B2, d'acide téréphtalique ou de ses dérivés formant ester ou de leurs mélanges, B3) de 98 à 102 % en moles, rapporté aux composants B1 et B2, de 1,4-butane diol ou de 1,3-propane diol ou de leurs mélanges en tant que composant diol, B4) de 0 à 1 % en poids, rapporté au composant B, d'un agent de ramification, B5) de 0 à 2 % en poids, rapporté au composant B, d'un allongeur de chaîne, B6) de 0 à 2 % en poids, rapporté au composant B, d'autres additifs ; C) de 0 à 60 % en poids, rapporté aux composants A à D, d'un agent de renforcement fibreux C ; D) de 0 à 10 % en poids, rapporté aux composants A à D, d'autres additifs D. La présente invention concerne en outre un procédé pour augmenter la résistance au choc sur éprouvette entaillée des polyamides ainsi que l'utilisation des matières à mouler susmentionnées pour la production de fibres, de feuilles et de corps moulés, ainsi que des fibres, des feuilles et des corps moulés pouvant être obtenus à partir de ces matières à mouler.
EP12761580.5A 2011-09-21 2012-09-12 Matières à mouler en polyamide Withdrawn EP2758471A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP12761580.5A EP2758471A1 (fr) 2011-09-21 2012-09-12 Matières à mouler en polyamide

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP11182184A EP2573138A1 (fr) 2011-09-21 2011-09-21 Masses de moulage en polyamide
PCT/EP2012/067796 WO2013041422A1 (fr) 2011-09-21 2012-09-12 Matières à mouler en polyamide
EP12761580.5A EP2758471A1 (fr) 2011-09-21 2012-09-12 Matières à mouler en polyamide

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EP2758471A1 true EP2758471A1 (fr) 2014-07-30

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EP12761580.5A Withdrawn EP2758471A1 (fr) 2011-09-21 2012-09-12 Matières à mouler en polyamide

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US (1) US20140303311A1 (fr)
EP (2) EP2573138A1 (fr)
JP (1) JP2014526590A (fr)
CN (1) CN103814083A (fr)
WO (1) WO2013041422A1 (fr)

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US20140303311A1 (en) 2014-10-09
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JP2014526590A (ja) 2014-10-06
CN103814083A (zh) 2014-05-21

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