WO2012110511A1 - Polyamide composition - Google Patents

Polyamide composition Download PDF

Info

Publication number
WO2012110511A1
WO2012110511A1 PCT/EP2012/052512 EP2012052512W WO2012110511A1 WO 2012110511 A1 WO2012110511 A1 WO 2012110511A1 EP 2012052512 W EP2012052512 W EP 2012052512W WO 2012110511 A1 WO2012110511 A1 WO 2012110511A1
Authority
WO
WIPO (PCT)
Prior art keywords
polyamide
composition
fuel
pxd10
amount
Prior art date
Application number
PCT/EP2012/052512
Other languages
French (fr)
Inventor
Van Marnix Gurp
Pim Gerard Anton JANSSEN
Gerard Jan Kwant
Original Assignee
Dsm Ip Assets B.V.
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Dsm Ip Assets B.V. filed Critical Dsm Ip Assets B.V.
Priority to JP2013553911A priority Critical patent/JP2014506944A/en
Priority to EA201300919A priority patent/EA201300919A1/en
Priority to EP12704268.7A priority patent/EP2675849A1/en
Priority to US13/982,957 priority patent/US20140039134A1/en
Priority to CN201280009020.4A priority patent/CN103391972B/en
Priority to BR112013021151A priority patent/BR112013021151A2/en
Publication of WO2012110511A1 publication Critical patent/WO2012110511A1/en

Links

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
    • C08L77/06—Polyamides derived from polyamines and polycarboxylic 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
    • C08L77/02—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
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group

Definitions

  • the present invention relates to a polyamide composition
  • a polyamide composition comprising a first polyamide, such as for example polyamide-6 or polyamide-66 and a fuel part, comprising the polyamide composition.
  • Such polyamide compositions are known in the art. These compositions may suffer from a low fuel permeation resistance. It is known that the fuel permeation resistance of polyamides present in such compositions may be low, in particular for fuels containing alcohols such as ethanol. For example, polyamide-6 and polyamide-66 suffer from such a low resistance. Increasing such resistance is highly desirable as alcohol containing fuels are more and more applied.
  • composition further comprises polyamide-PXD10 (poly(p-xylylene sebacamide); also referred to as PA-PXD10) as second polyamide in an amount of at least 0.01 wt% based on the total amount of polyamides in the composition.
  • polyamide-PXD10 poly(p-xylylene sebacamide); also referred to as PA-PXD10
  • PA-PXD10 poly(p-xylylene sebacamide)
  • PA-612 denotes a homopolymer with building blocks hexane-1 ,6-diamine and dodecanoic acid
  • PA-6/12 denotes a copolymer made from ⁇ -caprolactam and laurolactam and a blend of PA-6 and PA-12 is described as PA-6/PA-12.
  • the fuel permeation resistance, in particular for fuels containing alcohols such as ethanol, of the composition can be increased to an extent much higher than one would expect from the individual fuel permeation resistances of the first polyamide and of polyamide-PXD10.
  • polyamide- PXD10 surprisingly shows to be miscible with the first polyamide. This is exemplified by melting point depression as well as crystallization point depressions of the composition, compared to the melting points of the separate polyamides.
  • the polyamide composition according to the invention can be obtained by blending polyamide-PXD10 with at least the first polyamide at a temperature at which all polyamides are molten. Preferably, the blending is performed without transamidation catalyst, in order to avoid the formation of a random-copolymer.
  • the composition according to the invention comprises polyamide- PXD10.
  • the amount of polyamide-PXD10 in the composition of the present invention is at least 0.01wt%, with respect to the total amount of polyamides.
  • the amount of PA-PXD10 is at least 1 wt%, more preferably at least 5wt%, even more preferably at least 10wt%, even more preferably at least 15 wt.% and even more preferably at least 20 wt.%. Any percentages between these values are also possible, such as 0.5, 2, 3, 4, 6, 7, 8, 9, 1 1 , 12, 13, 14 ,16 ,17 ,18 and 19 wt%. All percentages are based on the total amount of polyamides in the composition, unless stated otherwise. The higher the amount of polyamide-PXD10, the more pronounced the beneficial effect of polyamide-PXD10 on the fuel permeation resistance of the composition of the present invention.
  • the amount of polyamide-PXD10 in the composition of the present invention is preferably at most 99 wt.%, more preferably at most 95 wt%, more preferably at most 90 wt.%, even more preferably at most 85 wt.%, even more preferably at most 80 wt.%, even more preferably at most 70 wt.%, even more preferably at most 60 wt.% and even more preferably at most 50 wt.%.
  • polyamide-PXD10 in the composition according to the invention already exhibited a significant increase in fuel permeation resistance, which is exemplified in the examples
  • the polyamide-PXD10 can for example be obtained by the method described in WO2010032692.
  • the first polyamide can be any polyamide other than polyamide- PXD10.
  • Suitable first polyamides in the composition according to the invention include aliphatic polyamides, semi-aromatic or aromatic polyamides.
  • Non-limiting examples of aliphatic polyamides are polyamide-6, polyamide-46, polyamide-66, polyamide-11 , polyamide-12, polyamide-410, polyamide-510, polyamide-610 .
  • Non-limiting examples of semi-aromatic polyamides are polyamide-MXD6, polyamide-6l/6T, polyamide-66/6T.
  • the composition comprises an aliphatic polyamide as first polyamide.
  • the composition comprises as first polyamide polyamide-6, polyamide-66 or polyamide-46 or copolyamides of the constituting monomers thereof. More preferably, the composition comprises polyamide-6 or polyamide-66 as the fuel permeation resistance, in particular for alcohol containing fuels, of these polyamides is low.
  • the amount of first polyamide in the composition of the present invention preferably ranges from 1 wt% up to and including 99.99 wt.%, with respect to the total amount of polyamides.
  • the amount of first polyamide is preferably higher than 5 wt%, more preferably higher than 10 wt%, even more preferably higher than 15 wt%, even more preferably higher than 20 wt.%, even more preferably higher than 25 wt.% and even more preferably higher than 30 wt.%. Any percentages between these values are also possible, such as 2, 3, 4, 6, 7, 8, 9, 1 1 , 12, 13, 14,16, 17,18 and 19 wt%.
  • the composition comprises at least 50 wt.% of first polyamide.
  • the amount of the first polyamide in the composition of the present invention is preferably at most 95 wt%, more preferably at most 90 wt.%, even more preferably at most 85 wt.% and even more preferably at most 80 wt.%. Any percentages between these values are also possible, such as 94, 93, 92, 91 , 89, 88, 87, 86, 84, 83, 82 and 81 wt%.
  • the first polyamide is polyamide-6 or polyamide-66 that is present in the composition.
  • the first polyamide is polyamide-6 or polyamide-66 that is present in the composition and polyamide-PXD10 is present in an amount between 5 to 25 wt% with respect to the total amount of polyamides. This combines the beneficial fuel permeability properties which are present in relative low amounts of polyamide-PXD10 with economic properties of higher amounts of polyamide-6 or polyamide-66.
  • the first polyamide is a polyamide with a melting temperature as measured by DSC at 10°C per minute of less than the melting temperature of polyamide-PXD10.
  • the polyamide composition according to the invention may further comprise a third polyamide.
  • the third polyamide can be any polyamide other than the first polyamide and polyamide-PXD10.
  • Suitable third polyamides in the composition according to the invention include aliphatic polyamides, semi-aromatic or aromatic polyamides.
  • Non-limiting examples of aliphatic polyamides are polyamide-6, polyamide-46, polyamide-66, polyamide-1 1 , polyamide-12, polyamide-410, polyamide- 510, polyamide-610.
  • Non-limiting examples of semi-aromatic polyamides are polyamide-MXD6, polyamide-6l/6T, polyamide-66/6T.
  • the amount of third polyamide is preferably higher than 5 wt%, more preferably higher than 10 wt%, even more preferably higher than 15 wt%, even more preferably higher than 20 wt.%, even more preferably higher than 25 wt.% and even more preferably higher than 30 wt.%. Any percentages between these values are also possible, such as 2, 3, 4, 6, 7, 8, 9, 1 1 , 12, 13, 14, 16, 17, 18 and 19 wt%.
  • the amount of the third polyamide in the composition of the present invention is preferably at most 90 wt.%, more preferably at most 80 wt.%, even more preferably at most 70 wt.%, even more preferably at most 60 wt.%, and even more preferably at most 50 wt.%.
  • the first polyamide is polyamide-6
  • the third polyamide is polyamide-66 which are both present in the composition in an amount ranging from 10 wt.% up to and including 90 wt.% and the amount of polyamide-PXD10 ranging from 10 wt.% up to and including 80 wt.%.
  • the sum of the amounts of first polyamide and polyamide- PXD10 is at least 80 wt.%, more preferably at least 90 wt.% and even more preferably 100 wt.%, relative to the total amount of polyamides in the composition.
  • the composition according to the invention may further comprise usual additives.
  • additives are flame-retardants, fillers, in particular mineral fillers, release agents, lubricants and impact modifiers.
  • the composition may also contain glass fibres and fillers.
  • the amount of polyamides in the composition is between 40 and 95 wt%, relative to the total composition.
  • Fillers may be present in an amount of up to 40 wt% (relative to the total composition), preferably between 10 and 40 wt% and glass fiber may be present in an amount up to 50 wt % (relative to the total composition), preferably between 5 and 50 wt% .
  • Other functional additives may be present in the usual effective amounts as known in the art.
  • the polyamide composition according to the invention can advantageously be used in the production of a fuel part.
  • a fuel part can be a monolithic or monolayer part. Examples are housings of a fuel pump, tabs and monolayer fuel container. Production methods such as injection molding and blow-molding are known to provide monolayer fuel parts. This has the advantage that the method for production is simple and allows for high degree of design freedom.
  • a fuel part comprising a polyamide composition according to the invention as a monolayer has the advantage that either the fuel permeability is lower or that the monolayer can be thinner to achieve the same fuel permeability. Another advantage of a monolayer part is that the fuel permeation is more homogeneous and that no pinching occurs.
  • a fuel part can also be a multilayer part. Examples of multilayer parts are multilayer fuel containers, multilayer fuel canister and multilayer fuel hoses.
  • Multilayer fuel parts are usually made by blow-molding or by extrusion. One or more layers are then made from the polyamide composition comprising according to the invention.
  • a multilayer fuel part has the advantage that the properties of various layers can be advantageously combined.
  • Other layers might include high density poly ethylene (HDPE), ethylene vinyl alcohol (EVOH), tie-layers which are beneficial for various reasons.
  • HDPE has a positive influence on impact, moisture absorption and chemical resistance.
  • EVOH is known for its low fuel permeation.
  • Tie-layers are used for their overall strength.
  • Another advantage of a multilayer fuel part comprising the polyamide composition according to the invention is that the decreased fuel permeation of the polyamide composition allows either for a simplified design of the fuel part, such as thinner layers, or less layers, or a lower fuel permeation of the whole fuel part.
  • Fuel parts can be made with known processes, such as injection- molding or blow-molding.
  • Injection molding is here understood to comprise the following steps: a. heating a polyamide composition to obtain a viscous liquid;
  • Blow-molding is here understood to comprise at least the following steps:
  • polyamide-6 (Comp Ex A) are injection molded into plaques having a circular form and having dimensions of 60 mm in diameter and 1.0 mm in thickness.
  • the fuel permeation rate is measured by the weight loss method according to ASTM E96BW in which water has been replaced by ASTM fuel CE10 (composed of 10 vol. % ethanol and 90 vol. % of ASTM fuel C (50/50 wt% mixture of toluene and iso-octane)).
  • the fuel permeation measurements are performed at 40 °C.
  • the cup is filled with 20 ml of the fuel CE10.
  • the tested plaque is mounted above the cavity on the cup and placed between two flat gaskets.
  • the gaskets are made of Viton (low permeation fluorocarbon elastomer) and also possess a cavity of the same size as the fuel cup.
  • the cup is closed by a steel lid with an opening in the middle matching the cup cavity. The lid is fixed and tightened with the screws.
  • the gaskets are located between the two steel parts of the cup and are not in contact with the fuel. Their purpose is to prevent leakage of the fuel from the fuel cup.
  • Examples I and II show a decreased fuel permeability with respect to Comparative Example A.

Landscapes

  • 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

Polyamide composition comprising a first polyamide, characterized in that the composition further comprises polyamide-PXD10 in an amount of at least 0.01 wt%, based on the total amount of polyamides in the composition. In a preferred embodiment of the invention, the first polyamide is an aliphatic polyamide chosen from the group of polyamide-6, polyamide-66 and polyamide-46. A fuel part, comprising the polyamide composition is also claimed.

Description

POLYAMIDE COMPOSITION
The present invention relates to a polyamide composition comprising a first polyamide, such as for example polyamide-6 or polyamide-66 and a fuel part, comprising the polyamide composition.
Such polyamide compositions are known in the art. These compositions may suffer from a low fuel permeation resistance. It is known that the fuel permeation resistance of polyamides present in such compositions may be low, in particular for fuels containing alcohols such as ethanol. For example, polyamide-6 and polyamide-66 suffer from such a low resistance. Increasing such resistance is highly desirable as alcohol containing fuels are more and more applied.
It is therefore an object of the present invention to increase the fuel permeation resistance of such a polyamide composition, in particular the resistance against permeation of alcohol containing fuels.
This has surprisingly been achieved in that the polyamide
composition further comprises polyamide-PXD10 (poly(p-xylylene sebacamide); also referred to as PA-PXD10) as second polyamide in an amount of at least 0.01 wt% based on the total amount of polyamides in the composition.
The nomenclature is adhered to as used in Nylon Plastics Handbook, Melvin I. Kohan, Hanser Publishers, 1995; e.g. PA-612 denotes a homopolymer with building blocks hexane-1 ,6-diamine and dodecanoic acid, PA-6/12 denotes a copolymer made from ε-caprolactam and laurolactam and a blend of PA-6 and PA-12 is described as PA-6/PA-12.
It has surprisingly been found that the fuel permeation resistance, in particular for fuels containing alcohols such as ethanol, of the composition can be increased to an extent much higher than one would expect from the individual fuel permeation resistances of the first polyamide and of polyamide-PXD10.
Yet another advantage of the present invention is that polyamide- PXD10 surprisingly shows to be miscible with the first polyamide. This is exemplified by melting point depression as well as crystallization point depressions of the composition, compared to the melting points of the separate polyamides.
The polyamide composition according to the invention can be obtained by blending polyamide-PXD10 with at least the first polyamide at a temperature at which all polyamides are molten. Preferably, the blending is performed without transamidation catalyst, in order to avoid the formation of a random-copolymer. The composition according to the invention comprises polyamide- PXD10. The amount of polyamide-PXD10 in the composition of the present invention is at least 0.01wt%, with respect to the total amount of polyamides. Preferably, the amount of PA-PXD10 is at least 1 wt%, more preferably at least 5wt%, even more preferably at least 10wt%, even more preferably at least 15 wt.% and even more preferably at least 20 wt.%. Any percentages between these values are also possible, such as 0.5, 2, 3, 4, 6, 7, 8, 9, 1 1 , 12, 13, 14 ,16 ,17 ,18 and 19 wt%. All percentages are based on the total amount of polyamides in the composition, unless stated otherwise. The higher the amount of polyamide-PXD10, the more pronounced the beneficial effect of polyamide-PXD10 on the fuel permeation resistance of the composition of the present invention. The amount of polyamide-PXD10 in the composition of the present invention is preferably at most 99 wt.%, more preferably at most 95 wt%, more preferably at most 90 wt.%, even more preferably at most 85 wt.%, even more preferably at most 80 wt.%, even more preferably at most 70 wt.%, even more preferably at most 60 wt.% and even more preferably at most 50 wt.%.
Surprisingly even very low amounts of polyamide-PXD10 in the composition according to the invention already exhibited a significant increase in fuel permeation resistance, which is exemplified in the examples An advantage of low amounts of polyamide-PXD10, such as preferably at most 20wt% with respect to the total amount of polyamide, is that the oxygen permeability remains sufficient under dry conditions as well as humid conditions, i.e. at 85% relative humidity.
The polyamide-PXD10 can for example be obtained by the method described in WO2010032692.
The first polyamide can be any polyamide other than polyamide- PXD10. Suitable first polyamides in the composition according to the invention include aliphatic polyamides, semi-aromatic or aromatic polyamides. Non-limiting examples of aliphatic polyamides are polyamide-6, polyamide-46, polyamide-66, polyamide-11 , polyamide-12, polyamide-410, polyamide-510, polyamide-610 . Non-limiting examples of semi-aromatic polyamides are polyamide-MXD6, polyamide-6l/6T, polyamide-66/6T.
In one embodiment of the present invention, the composition comprises an aliphatic polyamide as first polyamide. Preferably, the composition comprises as first polyamide polyamide-6, polyamide-66 or polyamide-46 or copolyamides of the constituting monomers thereof. More preferably, the composition comprises polyamide-6 or polyamide-66 as the fuel permeation resistance, in particular for alcohol containing fuels, of these polyamides is low. The amount of first polyamide in the composition of the present invention preferably ranges from 1 wt% up to and including 99.99 wt.%, with respect to the total amount of polyamides. Preferably, the amount of first polyamide is preferably higher than 5 wt%, more preferably higher than 10 wt%, even more preferably higher than 15 wt%, even more preferably higher than 20 wt.%, even more preferably higher than 25 wt.% and even more preferably higher than 30 wt.%. Any percentages between these values are also possible, such as 2, 3, 4, 6, 7, 8, 9, 1 1 , 12, 13, 14,16, 17,18 and 19 wt%. In a particular preferred embodiment, the composition comprises at least 50 wt.% of first polyamide.
The amount of the first polyamide in the composition of the present invention is preferably at most 95 wt%, more preferably at most 90 wt.%, even more preferably at most 85 wt.% and even more preferably at most 80 wt.%. Any percentages between these values are also possible, such as 94, 93, 92, 91 , 89, 88, 87, 86, 84, 83, 82 and 81 wt%.
In a preferred embodiment of the present invention, the first polyamide is polyamide-6 or polyamide-66 that is present in the composition.
In another preferred embodiment of the present invention, the first polyamide is polyamide-6 or polyamide-66 that is present in the composition and polyamide-PXD10 is present in an amount between 5 to 25 wt% with respect to the total amount of polyamides. This combines the beneficial fuel permeability properties which are present in relative low amounts of polyamide-PXD10 with economic properties of higher amounts of polyamide-6 or polyamide-66.
In a third embodiment of the present invention, the first polyamide is a polyamide with a melting temperature as measured by DSC at 10°C per minute of less than the melting temperature of polyamide-PXD10.
The polyamide composition according to the invention may further comprise a third polyamide. The third polyamide can be any polyamide other than the first polyamide and polyamide-PXD10. Suitable third polyamides in the composition according to the invention include aliphatic polyamides, semi-aromatic or aromatic polyamides. Non-limiting examples of aliphatic polyamides are polyamide-6, polyamide-46, polyamide-66, polyamide-1 1 , polyamide-12, polyamide-410, polyamide- 510, polyamide-610. Non-limiting examples of semi-aromatic polyamides are polyamide-MXD6, polyamide-6l/6T, polyamide-66/6T.
Preferably, the amount of third polyamide is preferably higher than 5 wt%, more preferably higher than 10 wt%, even more preferably higher than 15 wt%, even more preferably higher than 20 wt.%, even more preferably higher than 25 wt.% and even more preferably higher than 30 wt.%. Any percentages between these values are also possible, such as 2, 3, 4, 6, 7, 8, 9, 1 1 , 12, 13, 14, 16, 17, 18 and 19 wt%. The amount of the third polyamide in the composition of the present invention is preferably at most 90 wt.%, more preferably at most 80 wt.%, even more preferably at most 70 wt.%, even more preferably at most 60 wt.%, and even more preferably at most 50 wt.%.
In a preferred embodiment of the present invention, the first polyamide is polyamide-6, the third polyamide is polyamide-66 which are both present in the composition in an amount ranging from 10 wt.% up to and including 90 wt.% and the amount of polyamide-PXD10 ranging from 10 wt.% up to and including 80 wt.%.
Preferably, the sum of the amounts of first polyamide and polyamide- PXD10 is at least 80 wt.%, more preferably at least 90 wt.% and even more preferably 100 wt.%, relative to the total amount of polyamides in the composition.
The composition according to the invention may further comprise usual additives. Examples of such additives are flame-retardants, fillers, in particular mineral fillers, release agents, lubricants and impact modifiers. Usually in automotive applications the composition may also contain glass fibres and fillers. In general the amount of polyamides in the composition is between 40 and 95 wt%, relative to the total composition. Fillers may be present in an amount of up to 40 wt% (relative to the total composition), preferably between 10 and 40 wt% and glass fiber may be present in an amount up to 50 wt % (relative to the total composition), preferably between 5 and 50 wt% . Other functional additives may be present in the usual effective amounts as known in the art.
The polyamide composition according to the invention can advantageously be used in the production of a fuel part. A fuel part can be a monolithic or monolayer part. Examples are housings of a fuel pump, tabs and monolayer fuel container. Production methods such as injection molding and blow-molding are known to provide monolayer fuel parts. This has the advantage that the method for production is simple and allows for high degree of design freedom. A fuel part comprising a polyamide composition according to the invention as a monolayer, has the advantage that either the fuel permeability is lower or that the monolayer can be thinner to achieve the same fuel permeability. Another advantage of a monolayer part is that the fuel permeation is more homogeneous and that no pinching occurs. A fuel part can also be a multilayer part. Examples of multilayer parts are multilayer fuel containers, multilayer fuel canister and multilayer fuel hoses.
Multilayer fuel parts are usually made by blow-molding or by extrusion. One or more layers are then made from the polyamide composition comprising according to the invention. A multilayer fuel part has the advantage that the properties of various layers can be advantageously combined. Other layers might include high density poly ethylene (HDPE), ethylene vinyl alcohol (EVOH), tie-layers which are beneficial for various reasons. HDPE has a positive influence on impact, moisture absorption and chemical resistance. EVOH is known for its low fuel permeation. Tie-layers are used for their overall strength. Another advantage of a multilayer fuel part comprising the polyamide composition according to the invention is that the decreased fuel permeation of the polyamide composition allows either for a simplified design of the fuel part, such as thinner layers, or less layers, or a lower fuel permeation of the whole fuel part.
Fuel parts can be made with known processes, such as injection- molding or blow-molding.
Injection molding is here understood to comprise the following steps: a. heating a polyamide composition to obtain a viscous liquid;
b. filling a mold cavity with the viscous liquid;
c. leaving the viscous liquid in the mold under pressure until it cools and solidifies to form a part;
d. opening the mold;
e. ejecting the part.
Blow-molding is here understood to comprise at least the following steps:
a. heating a polyamide composition to obtain a viscous liquid;
b. forming a parison from the viscous liquid;
c. expand the parison by pressurized gas and press it against a mold cavity until it cools and solidifies to form a part;
d. opening the mold;
e. ejecting the part.
The invention will be elucidated by the following examples. Amounts are denoted in wt% based on the total amount of polyamides in the composition, unless stated otherwise.
A polyamide composition (example I and II) as specified in Table 1 , polyamide-6 (Comp Ex A) are injection molded into plaques having a circular form and having dimensions of 60 mm in diameter and 1.0 mm in thickness. The fuel permeation rate is measured by the weight loss method according to ASTM E96BW in which water has been replaced by ASTM fuel CE10 (composed of 10 vol. % ethanol and 90 vol. % of ASTM fuel C (50/50 wt% mixture of toluene and iso-octane)). The fuel permeation measurements are performed at 40 °C. The cup is filled with 20 ml of the fuel CE10. The tested plaque is mounted above the cavity on the cup and placed between two flat gaskets. The gaskets are made of Viton (low permeation fluorocarbon elastomer) and also possess a cavity of the same size as the fuel cup. The cup is closed by a steel lid with an opening in the middle matching the cup cavity. The lid is fixed and tightened with the screws. The gaskets are located between the two steel parts of the cup and are not in contact with the fuel. Their purpose is to prevent leakage of the fuel from the fuel cup.
Table 1
Figure imgf000007_0001
Examples I and II show a decreased fuel permeability with respect to Comparative Example A.

Claims

Polyamide composition comprising a first polyamide, characterized in that the composition further comprises polyamide-PXD10 in an amount of at least 0.01 wt%, based on the total amount of polyamides in the composition.
Polyamide composition according to claim 1 characterized in that the amount of polyamide-PXD10 is at least 0.5 wt%, based on the total amount of polyamides in the composition.
Polyamide composition according to claim 1 , characterized in that the amount of polyamide-PXD10 is at least 5 wt%, based on the total amount of polyamides in the composition.
Polyamide composition according to claim 1 , characterized in that the amount of polyamide-PXD10 is at least 10 wt%, based on the total amount of polyamides in the composition.
Polyamide composition according to claim 1 , characterized in that the amount of polyamide-PXD10 is at least 20 wt%, based on the total amount of polyamides in the composition.
Polyamide composition according to anyone of claims 1-5, characterized in that the amount of polyamide-PXD10 is at most 90 wt.%.
Polyamide composition according to anyone of claims 1-5, characterized in that the amount of polyamide-PXD10 is at most 80 wt.%.
Polyamide composition according to any of the claims above, characterized in that the first polyamide is an aliphatic polyamide.
Polyamide composition according to any of the claims above, characterized in that the first polyamide is chosen from the group of polyamide-6, polyamide-66 and polyamide-46.
Polyamide composition according to any of claims 1-8, characterized in that the first polyamide is chosen from the group of polyamide-6 and polyamide-66. Polyamide composition according to anyone of the claims above,
characterized in that the composition comprises at least 50 wt.% of first polyamide.
Polyamide composition according to anyone of the claims above,
characterized in that the composition comprises at most 90 wt.% of first polyamide.
13. Polyamide composition according to anyone of the claims above, characterized in that the composition further comprises a third polyamide.
14. Polyamide composition according to claim 14, characterized in that the third polyamide is chosen from the group of polyamide-6 and polyamide-66. 15. Fuel part, comprising the polyamide composition according to any of the claims above.
PCT/EP2012/052512 2011-02-17 2012-02-14 Polyamide composition WO2012110511A1 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
JP2013553911A JP2014506944A (en) 2011-02-17 2012-02-14 Polyamide composition
EA201300919A EA201300919A1 (en) 2011-02-17 2012-02-14 POLYAMID COMPOSITION
EP12704268.7A EP2675849A1 (en) 2011-02-17 2012-02-14 Polyamide composition
US13/982,957 US20140039134A1 (en) 2011-02-17 2012-02-14 Polyamide composition
CN201280009020.4A CN103391972B (en) 2011-02-17 2012-02-14 Daiamid composition
BR112013021151A BR112013021151A2 (en) 2011-02-17 2012-02-14 polyamide composition

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP11154838.4 2011-02-17
EP11154838 2011-02-17

Publications (1)

Publication Number Publication Date
WO2012110511A1 true WO2012110511A1 (en) 2012-08-23

Family

ID=45607746

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2012/052512 WO2012110511A1 (en) 2011-02-17 2012-02-14 Polyamide composition

Country Status (7)

Country Link
US (1) US20140039134A1 (en)
EP (1) EP2675849A1 (en)
JP (1) JP2014506944A (en)
CN (1) CN103391972B (en)
BR (1) BR112013021151A2 (en)
EA (1) EA201300919A1 (en)
WO (1) WO2012110511A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2792714A4 (en) * 2011-12-16 2015-07-08 Mitsubishi Gas Chemical Co Molded article
EP4303259A1 (en) 2022-07-06 2024-01-10 Ems-Chemie Ag Polyamide parts with low fuel permeation

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150148485A1 (en) * 2013-11-22 2015-05-28 Johns Manville Fiber-reinforced composites made with reactive resin compositions and fibers

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2289775A (en) * 1940-06-14 1942-07-14 Du Pont Protein-polyamide mixture
US4861838A (en) * 1987-06-22 1989-08-29 Allied-Signal Inc. Process for production of quasi-random copolymers from homopolymers
US4946909A (en) * 1988-11-03 1990-08-07 Allied-Signal Inc. Process for production of quasi-random copolymers from homopolymers using aryl phosphoryl azide(s)
GB2318120A (en) * 1994-09-22 1998-04-15 Du Pont Crystalline aromatic polyamide resin composition
WO2008071598A1 (en) * 2006-12-13 2008-06-19 Evonik Degussa Gmbh Transparent part
WO2010032692A1 (en) 2008-09-18 2010-03-25 三菱瓦斯化学株式会社 Method for producing polyamide

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006297894A (en) * 2005-03-24 2006-11-02 Ube Ind Ltd Polyamide laminated biaxially oriented film
DE102005051126A1 (en) * 2005-10-26 2007-05-03 Degussa Gmbh Decorative foil, useful as e.g. a protection foil against e.g. chemicals, comprises a coating layer comprising polyamide composition
JP4894066B2 (en) * 2006-12-11 2012-03-07 東洋製罐株式会社 Multi-layer container
PT2270078T (en) * 2008-04-16 2020-04-08 Unitika Ltd Biaxially stretched polyamide resin film, and process for production thereof
CN102959014B (en) * 2010-07-08 2014-08-27 三菱瓦斯化学株式会社 Polyamide resin composition
JP5516265B2 (en) * 2010-09-17 2014-06-11 三菱瓦斯化学株式会社 Molding method of polyamide resin composition

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2289775A (en) * 1940-06-14 1942-07-14 Du Pont Protein-polyamide mixture
US4861838A (en) * 1987-06-22 1989-08-29 Allied-Signal Inc. Process for production of quasi-random copolymers from homopolymers
US4946909A (en) * 1988-11-03 1990-08-07 Allied-Signal Inc. Process for production of quasi-random copolymers from homopolymers using aryl phosphoryl azide(s)
GB2318120A (en) * 1994-09-22 1998-04-15 Du Pont Crystalline aromatic polyamide resin composition
WO2008071598A1 (en) * 2006-12-13 2008-06-19 Evonik Degussa Gmbh Transparent part
WO2010032692A1 (en) 2008-09-18 2010-03-25 三菱瓦斯化学株式会社 Method for producing polyamide

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
MELVIN . KOHAN: "Nylon Plastics Handbook", 1995, HANSER PUBLISHERS, pages: A-612
SHIBAYAMA M ET AL: "Miscibility and crystallinity control of nylon 6 and poly(m-xylene adipamide) blends", POLYMER, ELSEVIER SCIENCE PUBLISHERS B.V, GB, vol. 36, no. 25, 1 January 1995 (1995-01-01), pages 4811 - 4816, XP004194697, ISSN: 0032-3861 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2792714A4 (en) * 2011-12-16 2015-07-08 Mitsubishi Gas Chemical Co Molded article
EP4303259A1 (en) 2022-07-06 2024-01-10 Ems-Chemie Ag Polyamide parts with low fuel permeation

Also Published As

Publication number Publication date
BR112013021151A2 (en) 2019-09-24
CN103391972A (en) 2013-11-13
US20140039134A1 (en) 2014-02-06
EP2675849A1 (en) 2013-12-25
EA201300919A1 (en) 2014-01-30
CN103391972B (en) 2015-07-29
JP2014506944A (en) 2014-03-20

Similar Documents

Publication Publication Date Title
US8420221B2 (en) Semiaromatic moulding compositions and uses of these
CN105899586B (en) Thermoplastic polyamide elastomer composition and its products formed
JP2006002156A (en) Polymer mixture of aromatic polyamide and partial aromatic polyamide, its molded item and its use
JP5768949B2 (en) Polyamide resin composition for inner layer of delamination container and delamination container using the same
BR112018069437B1 (en) MULTILAYER TUBE
RU2647030C2 (en) Multilayer structure
TW201819533A (en) Heat-melting lamination-type material for 3d printer and heat-melting lamination-type filament for 3d printer using same
US20170342269A1 (en) Thermoplastic resin composition and molded body comprising the same
EP2598577B1 (en) Fuel part and process for producing of a fuel part
EP3238937B1 (en) Multilayer hollow molded body
JPWO2019117072A1 (en) Polyamide resin composition
WO2018073537A1 (en) Use of glass fibres having a circular cross-section in a mixture comprising a semi-aromatic polyamide and an aliphatic polyamide for improving the mechanical properties of the mixture
WO2012110511A1 (en) Polyamide composition
KR20110124241A (en) Plastic containers and conduits
JP6879489B2 (en) Multi-layer tube for fuel transportation and fuel pump module equipped with it, and how to use them
US9512292B2 (en) Fuel part and process for preparation of a fuel part
EP3390493B1 (en) Barrier structure based on mpmdt/xt copolyamide with a high tg
KR20120140655A (en) Fuel part
KR20160143645A (en) Molded body and manufacturing method thereof
EP3390494A1 (en) Barrier structure made from mxdt/xt copolyamide with a high tg
CN117425568A (en) Hollow structure for fuel

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 12704268

Country of ref document: EP

Kind code of ref document: A1

REEP Request for entry into the european phase

Ref document number: 2012704268

Country of ref document: EP

WWE Wipo information: entry into national phase

Ref document number: 2012704268

Country of ref document: EP

ENP Entry into the national phase

Ref document number: 2013553911

Country of ref document: JP

Kind code of ref document: A

NENP Non-entry into the national phase

Ref country code: DE

WWE Wipo information: entry into national phase

Ref document number: 201300919

Country of ref document: EA

WWE Wipo information: entry into national phase

Ref document number: 13982957

Country of ref document: US

REG Reference to national code

Ref country code: BR

Ref legal event code: B01A

Ref document number: 112013021151

Country of ref document: BR

ENP Entry into the national phase

Ref document number: 112013021151

Country of ref document: BR

Kind code of ref document: A2

Effective date: 20130819