EP0534958A1 - Composition de resine thermoplastique utilisee pour un produit de moulage multicouche - Google Patents

Composition de resine thermoplastique utilisee pour un produit de moulage multicouche

Info

Publication number
EP0534958A1
EP0534958A1 EP90912253A EP90912253A EP0534958A1 EP 0534958 A1 EP0534958 A1 EP 0534958A1 EP 90912253 A EP90912253 A EP 90912253A EP 90912253 A EP90912253 A EP 90912253A EP 0534958 A1 EP0534958 A1 EP 0534958A1
Authority
EP
European Patent Office
Prior art keywords
polyolefin
polyamide
resin
modified
polyolefin resin
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Withdrawn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
EP90912253A
Other languages
German (de)
English (en)
Inventor
T. Tech.Dev.Center Tonen Sekiyukagaku K.K. Nogata
Y Tech.Dev.Center Tonen Sekiyukagatu K.K Takado
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.)
Tonen Chemical Corp
Original Assignee
Tonen Sekiyu Kagaku KK
Tonen Chemical Corp
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 Tonen Sekiyu Kagaku KK, Tonen Chemical Corp filed Critical Tonen Sekiyu Kagaku KK
Publication of EP0534958A1 publication Critical patent/EP0534958A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/34—Layered products comprising a layer of synthetic resin comprising polyamides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/558—Impact strength, toughness
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2377/00—Polyamides

Definitions

  • the present invention concerns a thermoplastic resin composition used for multi-layered molding products and, more particularly, relates to a thermoplastic resin composition suitable for use as a polyolefin layer in multi-layered highly impact resistant molding products comprising a polyamide layer and a polyolefin layer.
  • polyolefin resins are inexpensive and have high strength, they are generally suitable for use in the production of various kinds of
  • thermoplastic resin compositions which are excellent both in mechanical strength and gas
  • a modified, plastic layer such as a polyolefin resin modified with an unsaturated carboxylic acid, is placed between the layers to act as an adhesive.
  • thermoplastic resin compositions that have
  • thermoplastic resin composition suitable for use as a polyolefin layer in a multi-layered molding product comprising a polyamide layer and a
  • dispersed particles or grains of polyamide in the resin composition is less than a predetermined size.
  • thermoplastic resin composition useful for producing multi-layered molding products comprises: (a) about 0.1 to about 5 wt.% of a polyamide based on the weight of the resin
  • composition (b) a polyolefin modified with an unsaturated carboxylic acid or its derivative in an amount not less than about 1/5th of the blending amount of the polyamide, and (c) a balance
  • the polyamide is dispersed in the thermoplastic resin composition, in a granular state, with an average grain size of not greater than about 4 microns.
  • Fig. 1 is a cross sectional view illustrating one embodiment of the layer structure for a multi- layered molding product prepared by using the resin composition according to the present invention.
  • the invention highly impact resistant
  • thermoplastic resin composition comprises a
  • polyolefin resin having dispersed therein fine particles of a polyamide and including a modified polyolefin as a compatibilizing agent.
  • polyamides useful in the present invention include those polyamide resins prepared from
  • aliphatic, cycloaliphatic or aromatic diamines such as hexamethylene diamine, decamethylene diamine, dodecamethylene diamine, 2,2,4- or 2,4,4- trimethylenehexamethylene diamine, 1,3- or 1,4- bis(aminomethyl)cyclohexane, bis (p- aminocyclohexylmethane), m- or p-xylene diamine and aliphatic, cycloaliphatic or aromatic dicarboxylic acids such as adipic acid, suberic acid, sebacic acid, cyclohexane diacarboxylic acid, terephthalic acid or isophthalic acid; polyamide resins prepared from aminocarboxylic acid such as 6-aminocaproic acid, 11-aminoundecanic acid or 12-aminododecanic acid; polyamide resins prepared from lactams such as e-caprolactams or ⁇ -dodecalactam; copolymerized polyamide resin
  • copolymers comprising more than 50% by weight of such a nylon resin and resins other than those described above may also be used.
  • the molecular weight of the polyamide is, preferably, within a range from 3,000 to 200,000 and more preferably within a range from 10,000 to
  • plasticizer such as ⁇ -caprolactam, N- butylbenzene sulfonamide or octyl p-oxybenzoate and the like in the polyamide. More preferably, the plasticizer is present in an amount from about 3-25 wt.%.
  • the polyolefin used in the present invention may be a homopolymer of ⁇ -olefin such as ethylene, propylene, butene-1, hexene-1 or 4-methylpentene-1; a copolymer of ethylene with propylene or another ⁇ - olefin, or a copolymer of ethylene with two or more of such ⁇ -olefins.
  • Polyethylene such as low density polyethylene, linear low density
  • polyethylene medium density polyethylene or high density polyethylene, as well as polypropylene are preferred. Further, a copolymer of polyethylene or polypropylene with a polymer other than those described above and containing more than 75 wt.% of polyethylene or polypropylene may be used.
  • the useful polypropylene is not restricted to polypropylene homopolymers but include random or block copolymers with other ⁇ -olefins containing more than 50 mol %, preferably more than 80 mol % polypropylene.
  • Suitable comonomers for propylene include ethylene or like other ⁇ -olefins, ethylene being particularly preferred. Accordingly, the term "polypropylene" used in the specification and claims should be construed as including polypropylene copolymers.
  • the high load melt-index (HLMI, at 190oC under 21.6 kg of load) be greater than 0.1 g/10 min and the melt-index (MI, at 190°C under 2.16 kg of load) be less than 100 g/10 min. More
  • the high load melt-index should be greater than 1 g/10 min and the melt-index less than 50 g/10 min.
  • the melt flow rate (MFR, at 230°C under 2.16 kg of load) is within a range from 0.01 to 150 g/10 min, preferably from 0.1 to 75 g/10 min.
  • composition may readily be kneaded or blended to disperse polyamide particles homogeneously.
  • the modified polyolefin used in the present invention is a polyolefin modified with an
  • Examples of the unsaturated carboxylic acid or its anhydride include for example monocarboxylic acids such as acrylic acid or methacrylic acid,
  • dicarboxylic acids such as maleic acid, fumaric acid or itaconic acid
  • dicarboxylic acid anhydrides such as maleic acid anhydride, itaconic acid anhydride or himic acid anhydride.
  • Dicarboxylic acids and their derivatives are particularly preferred.
  • a modified polyolefin with maleic acid anhydride or himic acid anhydride are particularly preferred.
  • the invention composition preferably present in the invention composition in the range from 0.005 - 5 wt.%.
  • maleic acid anhydride When maleic acid anhydride is used, its preferred range is from
  • the molar ratio of the terminal amines of the polyamide to the carboxylic acid groups in the modified polyolefin be greater than 0.1, for improved impact resistance.
  • the modified polyolefin can be prepared by either a solution method or a melt-kneading method.
  • carboxylic acid (or acid anhydride) and a catalyst are charged to an extruder, double-screw kneader, etc. and melt blended while heating at a temperature of about 150 - 250°C.
  • the starting materials are dissolved in an organic solvent, such as xylene, and preparation is conducted while stirring at a temperature from about 80 to about 140°C.
  • a radical polymerization catalyst may be used, for example peroxides, such as benzoyl peroxide, lauroyl peroxide, ditertiary butyl peroxide, acetyl
  • the catalyst is added in amounts from about 1 to about 100 parts by weight, based upon 100 parts by weight of the modifying unsaturated carboxylic acid or its anhydride.
  • the more preferred grain size of the dispersed polyamide is less than two microns on average.
  • thermoplastic resin In the invention thermoplastic resin
  • the content of the polyamide is from 0.1 to 5 wt.%, preferably from 0.1 to 3 wt.% based upon the resin content.
  • the content of the modified polyolefin is not less than 0.2 times, preferably 1 - 4 times the polyamide content.
  • the balance substantially comprises a polyolefin and optional additives and fillers.
  • polyamide particles in the resin composition may be reduced to less than 4 microns by blending or kneading the composition for a sufficient length of time under melt conditions.
  • thermoplastic resin composition may also include inorganic fillers such as carbon, etc. in order to improve mechanical strength, heat resistance, etc. When such fillers are added, it is preferred that the blending ratio of the
  • thermoplastic resin composition be more than 50 volume percent at 23°C. If additives such as organic fillers or carbon black comprise more than 50 percent by volume, not only is the moldability of the composition reduced thereby making it difficult to prepare a molding product, but the mechanical strength is also reduced.
  • additives may also be included in the invention composition, for example, heat
  • the invention composition may be produced by kneading or blending in a molten state while heating by using an extruder, such as a single or double screw extruder. Further, each of the above
  • ingredients may be premixed in a Henschel mixer, or the like, and the mixture may then be melt-kneaded in an extruder. Further, upon melt kneading of the composition, if there is a great difference in the melt viscosity between the polyolefin and the modified polyolefin, and the polyamide, the
  • dispersion may be improved by pre-kneading the polyamide and the modified polyolefin under melt conditions and thereafter kneading them together under melt conditions with the polyolefin.
  • a multi-layered molding product having a layer structure as shown in Fig. 1 can be prepared using the invention composition.
  • molding product comprises resin layers 1,1 composed of a composition according to the present invention; a polyamide resin layer 2 and modified polyolefin layers 3,3 for bonding the layers.
  • a modified polyolefin for example, is incorporated into the resin layers 1,1 the adhesion strength between each of the layers is increased thereby increasing the mechanical strength of the multi-layered product.
  • the polyamide layer 2 is used as the inner layer 2, the multi-layered molding product also has excellent water proof properties.
  • the multi-layered molding product can be prepared for example, by a blow-molding process, in which flash formed in the production can be
  • the flash contains polyolefin, modified polyolefin and polyamide resin. Since the flash has the same composition as the invention composition, it can be kneaded into the mixture without reducing compatibility.
  • the composition ratio of the polyolefin, the modified polyolefin and the polyamide resin in the flash varies depending upon the thickness of each of the layers of the multi-layered molding product. Thus, if resin is added to the blend composition taking the
  • composition of the flash into account then flash can be readily reused.
  • polyamides and polyolefins can be compatibilized using a polyolefin modified with an unsaturated carboxylic acid or its derivatives.
  • the occurrence of a peeling phenomenon at the interface of the polyolefin and polyamide can be prevented by adding a modified polyolefin and reducing the average grain size of the particles of the polyamide dispersed in the polyolefin to less than about 4 microns.
  • Carboxylic acid groups in the modified polyolefin react with terminal amines in the polyamide resin to form a polyamide-modified polyolefin copolymer uniformly distributed within the thermoplastic resin.
  • Nylon-6 having a number average molecular weight of 30,000 and containing 8% by weight of ⁇ - caprolactam as a plasticizer, was dry blended in a high speed mixer with a modified polyethylene (containing 0.4 wt.% of maleic acid anhydride and having a 0.5 g/10 min melt index) and a polyethylene (having a density of 0.955 g/cm 3 and having a melt index (MI) of 0.5 g/10 min) in the blending ratios shown in Table I. These blends were then charged to a single-screw extruder and kneaded at 240°C to obtain pellets of the composition.
  • a modified polyethylene containing 0.4 wt.% of maleic acid anhydride and having a 0.5 g/10 min melt index
  • MI melt index
  • the resultant pellets were dried and test specimens were prepared by injection molding.
  • the cylinder temperature in the injection molding was set to 240°C.
  • Tensile impact tests were conducted at 23°C and -40°C according to ASTM D1822-S. The results are shown in Table I.
  • Blends were prepared wherein the Nylon-6 did not include the plasticizer, ⁇ -caprolactam. Blend compositions are shown in Table I. Test specimens were prepared and tested as detailed above for Examples 1-6. Comparative Examples 1 - 4
  • blends were prepared using polyamides shown in Table II and the same modified polyethylene and the polyethylene as the blends of Example 1.
  • the blending ratios are shown in Table II.
  • Test specimens were prepared and tested using the procedures of Examples 1-6. The results are shown in Table II. Examples 15 - 20
  • Blends shown in Table III were prepared with Nylon-6 (having a number average molecular weight of 30,000 and containing 8% by weight of ⁇ -caprolactam), a modified polyolefin (0.4 wt.% of addition rate of maleic acid anhydride and having a melt flow rate (MFR) of 50 g/10 min, at 230°C under 2.16 kg of load), and a propylene homopolymer
  • Example 1 (having MFR of 9 g/10 min) using the same procedures as those in Example 1. Test specimens were prepared using the same procedures of Example 1. An Izod impact test was conducted at 23°C and -20°C
  • Blends 21-28 were prepared with the nylons shown in Table III and the same modified
  • test specimens produced by the invention have higher values for both tensile impact and strength and Izod strength.
  • Example 2 was used for the innermost and the
  • Nylon-6 was used for the intermediate layer (layer 2 in Fig. 1) and the modified polyethylene was used for the adhesion layer (layers 3,3 in Fig. 1).
  • the outermost layer and the innermost layers comprising the composition of Example 2 were 1800 microns and 1840 microns thick, respectively.
  • the intermediate layer comprising Nylon-6 was 120 microns thick and the adhesion layer, comprising the modified polyethylene, was 120 microns thick.
  • Example 30 Water was charged into 10 fuel tanks to the same weight as that of the fuel that would be required to fill the tanks. Each filled tank was then dropped from heights (6, 8, 10 and 12 meters) to determine the height from which the tank failed. The results are shown in Table V. Example 30
  • Example 2 comprising 100 parts by weight of recovered flash upon molding the fuel tanks in Example 29 and 100 parts by weight of the composition in Example 2
  • 70 liter volume fuel tanks comprising five layers and composed of three ingredients having the same layer structure as that in Example 29 were molded in the same manner except that a high density polyethylene (density: 0.955, melt index: 0.5 g/10 min) was used for the innermost and the outermost layers of the fuel tanks.
  • a high density polyethylene density: 0.955, melt index: 0.5 g/10 min

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)
  • Laminated Bodies (AREA)

Abstract

L'invention concerne une composition de résine thermoplastique ayant une résistance élevée à la traction et aux impacts et est appropriée pour être utilisée dans des conteneurs nécessitant de telles propriétés, tels que des réservoirs de carburant. La composition comprend: (a) une résine de polyoléfine; (b) de 0,1 à 5 % en poids environ d'une polyamide, dispersée sous forme de particules dont la taille moyenne est inférieure à 4 mu environ dans ladite résine de polyoléfine, d'après le poids de la résine de polyoléfine; et (c) une polyoléfine modifiée dans une quantité qui n'est pas inférieure à environ 0,2 fois le poids de la polyamide. La composition de résine thermoplastique peut être laminée sur du nylon avec une couche adhésive de polyéthylène modifiée entre la résine thermoplastique et le nylon. Le produit laminé ainsi produit est très résistant aux impacts et est approprié pour être utilisé dans la fabrication de réservoirs de carburant et autres conteneurs sensibles aux impacts.
EP90912253A 1989-08-04 1990-08-03 Composition de resine thermoplastique utilisee pour un produit de moulage multicouche Withdrawn EP0534958A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP1202530A JPH0366735A (ja) 1989-08-04 1989-08-04 多層成形品用熱可塑性樹脂組成物
JP202530/89 1989-08-04

Publications (1)

Publication Number Publication Date
EP0534958A1 true EP0534958A1 (fr) 1993-04-07

Family

ID=16459024

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90912253A Withdrawn EP0534958A1 (fr) 1989-08-04 1990-08-03 Composition de resine thermoplastique utilisee pour un produit de moulage multicouche

Country Status (6)

Country Link
EP (1) EP0534958A1 (fr)
JP (1) JPH0366735A (fr)
KR (1) KR920703718A (fr)
AU (1) AU6166290A (fr)
CA (1) CA2063987A1 (fr)
WO (1) WO1991002027A1 (fr)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0503909A1 (fr) * 1991-03-14 1992-09-16 Chevron Research And Technology Company Polyéthylène modifié à l'anhydride maléique substantiellement non-réticulé et procédé de préparation
AT399158B (de) * 1991-09-13 1995-03-27 Danubia Petrochem Polymere Verwendung von aus polyolefinen, polyamiden und haftvermittlern bestehenden formteilen zur hochfrequenzschweissung, sowie folien aus polyolefinen, polyamiden und haftvermittlern
ATE173856T1 (de) * 1992-02-14 1998-12-15 Sony Corp Datenaufzeichnungsmedium, datenaufzeichnungsgerät, datenwiedergabegerät und datenaufzeichnungs/wiedergabegerät
US5818805A (en) * 1992-02-14 1998-10-06 Sony Corporation Reproducing apparatus using an information recording medium wherein multi-bit digital information is represented by a shift amount of a pit edge
US5748582A (en) * 1992-02-14 1998-05-05 Sony Corporation Information recording medium wherein digital symbols are represented by discrete shift amounts of a pit edge and tracking wobbling pits are shared between adjacent tracks and information recording and reproducing apparatus therefor
FR2697465A1 (fr) * 1992-10-30 1994-05-06 Atochem Elf Sa Stratifiés à base d'alliages polyamides/polyoléfines et de liants de coextrusion, objets obtenus à partir de ceux-ci, procédés de revêtement à l'aide de ceux-ci.
US5517481A (en) * 1993-07-02 1996-05-14 Sony Corporation Optical recording and reproducing apparatus wherein data is recorded by stepwise shifting the edge position of each pit
JPH0845188A (ja) * 1994-07-29 1996-02-16 Sony Corp 記録媒体並びにその記録装置および再生装置
BE1012224A6 (fr) * 1998-10-08 2000-07-04 Solvay Corps creux multicouche en matiere thermoplastique et procede pour sa fabrication.
JP4721548B2 (ja) * 2001-05-11 2011-07-13 旭化成ケミカルズ株式会社 樹脂組成物およびその成形体
RU2011143145A (ru) 2009-03-26 2013-05-10 Нестек С.А. Устройство шагового перемещения укупорочных устройств для устройства наполнения пакетиков
JP5914318B2 (ja) * 2011-12-22 2016-05-11 トヨタ紡織株式会社 熱可塑性樹脂組成物の製造方法
CN108291060B (zh) 2015-12-01 2021-04-16 丰田纺织株式会社 成型体和其制造方法
BR112018004849B1 (pt) 2015-12-01 2022-11-08 Toyota Boshoku Kabushiki Kaisha Método para uso de um modificador para obter um corpo moldado
RU2682581C1 (ru) 2016-03-11 2019-03-19 Тойота Босоку Кабусики Кайся Формованное изделие из вспененной смолы и способ его изготовления
JP6288142B2 (ja) 2016-03-31 2018-03-07 トヨタ紡織株式会社 分散径の調整方法及び熱可塑性樹脂組成物
SG11201907705VA (en) * 2017-03-16 2019-09-27 Toyota Boshoku Kk Thermoplastic resin sheet, laminated sheet, and molded object
KR20190122851A (ko) 2017-04-19 2019-10-30 도요다 보쇼꾸 가부시키가이샤 열가소성 수지 조성물, 성형체 및 그 제조 방법
CN115584087B (zh) * 2022-09-30 2024-05-14 上海金发科技发展有限公司 一种聚丙烯复合材料及其制备方法和应用

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3373224A (en) * 1964-06-22 1968-03-12 Continental Can Co Compositions containing polyamides, polyolefins and ethylene-alpha, beta unsaturatedacid copolymers neutralized with sodium ions
US3373222A (en) * 1965-09-10 1968-03-12 Continental Can Co Compositions containing polyamides, polyolefins and carboxylated polyethylene
US3373223A (en) * 1965-09-28 1968-03-12 Continental Can Co Compositions containing polyamides, polyolefins, and ethylene-acrylic or methacrylicacid copolymers
US3873667A (en) * 1971-03-18 1975-03-25 Continental Can Co Process for preparing articles fabricated from polyolefin/polyamide blends having low permeability to gases
CA1146323A (fr) * 1979-03-06 1983-05-17 Pallatheri M. Subramanian Articles laminaires faits d'une polyolefine et d'un second polymere, et procede d'obtention
GB8704385D0 (en) * 1987-02-25 1987-04-01 Du Pont Canada Injection moulding of articles
US4950513A (en) * 1988-03-17 1990-08-21 E. I. Du Pont De Nemours And Company Laminar articles of a polyolefin and a nylon/polyvinyl alcohol blend

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9102027A1 *

Also Published As

Publication number Publication date
AU6166290A (en) 1991-03-11
CA2063987A1 (fr) 1991-02-05
KR920703718A (ko) 1992-12-18
JPH0366735A (ja) 1991-03-22
WO1991002027A1 (fr) 1991-02-21

Similar Documents

Publication Publication Date Title
EP0534958A1 (fr) Composition de resine thermoplastique utilisee pour un produit de moulage multicouche
EP0461836B1 (fr) Réservoir de carburant multicouche en résine
US8227543B2 (en) Flexible thermoplastic composition with improved resistance to the effect of oils, and use of such a composition
US20010003766A1 (en) Aromatic polyamide resin composition having excellent balance of toughness and stiffness
JPH03108534A (ja) 大型容器
US6281287B1 (en) Flexible thermoplastic resins having improved tensile strength
WO2017094720A1 (fr) Composition de résine polyamide à fluidité élevée
JP4214512B2 (ja) コポリアミド混合物結合剤層を有するポリアミド層をベースにした多層構造物
JPH0649295A (ja) ポリプロピレンーポリフタルアミドブレンド
US6887581B2 (en) Laminate for automobile parts
EP0494971A1 (fr) Melange de polyolefine/thermoplastique
JPH0662821B2 (ja) 熱可塑性樹脂組成物
US6077905A (en) Impact-resistant injected polyamide components
JP2695492B2 (ja) ポリアミド・ポリオレフィン樹脂組成物
JPH0532837A (ja) 樹脂組成物、フイルムおよび多層構造体
JP2860129B2 (ja) 耐衝撃性の優れた成型物の製造法
JP2020164660A (ja) ガラス繊維強化ポリアミド樹脂組成物及び成形体
JPH03252436A (ja) 熱可塑性樹脂組成物
JPH03224735A (ja) 多層成形体
US5965668A (en) Polyamide injection mouldings which include an impact strength modifier that has a particular distribution in the polyamide
JPH01240561A (ja) 繊維強化ポリマー組成物
JPH01278545A (ja) 繊維強化ポリマー組成物
JPH0224353A (ja) 繊維強化ポリマー組成物
JP2023129250A (ja) ポリアミド樹脂組成物、ポリアミド樹脂成形体およびその製造方法
JP2005007615A (ja) 自動車用燃料タンク

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19920128

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): BE CH DE ES FR GB IT LI NL SE

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19940228