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FR2268838A1 - - Google Patents

Info

Publication number
FR2268838A1
FR2268838A1 FR7513065A FR7513065A FR2268838A1 FR 2268838 A1 FR2268838 A1 FR 2268838A1 FR 7513065 A FR7513065 A FR 7513065A FR 7513065 A FR7513065 A FR 7513065A FR 2268838 A1 FR2268838 A1 FR 2268838A1
Authority
FR
France
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Withdrawn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
FR7513065A
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
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 BASF SE filed Critical BASF SE
Publication of FR2268838A1 publication Critical patent/FR2268838A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00—Use of organic ingredients
    • C08K5/16—Nitrogen-containing compounds
    • C08K5/34—Heterocyclic compounds having nitrogen in the ring
    • C08K5/3442—Heterocyclic compounds having nitrogen in the ring having two nitrogen atoms in the ring
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/40—High-molecular-weight compounds
    • C08G18/42—Polycondensates having carboxylic or carbonic ester groups in the main chain
    • C08G18/4205—Polycondensates having carboxylic or carbonic ester groups in the main chain containing cyclic groups
    • C08G18/4208—Polycondensates having carboxylic or carbonic ester groups in the main chain containing cyclic groups containing aromatic groups
    • C08G18/4211—Polycondensates having carboxylic or carbonic ester groups in the main chain containing cyclic groups containing aromatic groups derived from aromatic dicarboxylic acids and dialcohols
    • C08G18/4213—Polycondensates having carboxylic or carbonic ester groups in the main chain containing cyclic groups containing aromatic groups derived from aromatic dicarboxylic acids and dialcohols from terephthalic acid and dialcohols
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
    • C08G18/72—Polyisocyanates or polyisothiocyanates
    • C08G18/77—Polyisocyanates or polyisothiocyanates having heteroatoms in addition to the isocyanate or isothiocyanate nitrogen and oxygen or sulfur
    • C08G18/78—Nitrogen
    • C08G18/79—Nitrogen characterised by the polyisocyanates used, these having groups formed by oligomerisation of isocyanates or isothiocyanates
    • C08G18/797—Nitrogen characterised by the polyisocyanates used, these having groups formed by oligomerisation of isocyanates or isothiocyanates containing carbodiimide and/or uretone-imine groups
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
    • C08G18/72—Polyisocyanates or polyisothiocyanates
    • C08G18/77—Polyisocyanates or polyisothiocyanates having heteroatoms in addition to the isocyanate or isothiocyanate nitrogen and oxygen or sulfur
    • C08G18/78—Nitrogen
    • C08G18/79—Nitrogen characterised by the polyisocyanates used, these having groups formed by oligomerisation of isocyanates or isothiocyanates
    • C08G18/798—Nitrogen characterised by the polyisocyanates used, these having groups formed by oligomerisation of isocyanates or isothiocyanates containing urethdione groups
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00—Use of organic ingredients
    • C08K5/16—Nitrogen-containing compounds
    • C08K5/29—Compounds containing one or more carbon-to-nitrogen double bonds
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00—Use of organic ingredients
    • C08K5/36—Sulfur-, selenium-, or tellurium-containing compounds
    • 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
    • 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
    • C08L23/04—Homopolymers or copolymers of ethene
    • C08L23/08—Copolymers of ethene
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L27/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers
    • C08L27/02—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L27/12—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
    • C08L27/18—Homopolymers or copolymers or tetrafluoroethene
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L33/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides or nitriles thereof; Compositions of derivatives of such polymers
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L61/00—Compositions of condensation polymers of aldehydes or ketones; Compositions of derivatives of such polymers
    • C08L61/02—Condensation polymers of aldehydes or ketones only
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L67/00—Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
    • C08L67/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L69/00—Compositions of polycarbonates; Compositions of derivatives of polycarbonates
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L75/00—Compositions of polyureas or polyurethanes; Compositions of derivatives of such polymers
    • C08L75/04—Polyurethanes
    • 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
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L79/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing nitrogen with or without oxygen or carbon only, not provided for in groups C08L61/00 - C08L77/00

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)
  • Polyurethanes Or Polyureas (AREA)
FR7513065A 1974-04-25 1975-04-25 Withdrawn FR2268838A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2419968A DE2419968A1 (de) 1974-04-25 1974-04-25 Zaehe, waermealterungsbestaendige und verarbeitungsstabile polybutylenterephthalat-formmassen

Publications (1)

Publication Number Publication Date
FR2268838A1 true FR2268838A1 (fr) 1975-11-21

Family

ID=5913889

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7513065A Withdrawn FR2268838A1 (fr) 1974-04-25 1975-04-25

Country Status (8)

Country Link
US (1) US4022752A (fr)
JP (1) JPS50151953A (fr)
BE (1) BE828394A (fr)
DE (1) DE2419968A1 (fr)
FR (1) FR2268838A1 (fr)
GB (1) GB1494843A (fr)
IT (1) IT1035378B (fr)
NL (1) NL7504818A (fr)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2394562A1 (fr) * 1977-06-18 1979-01-12 Dynamit Nobel Ag Polyesters modifies derivant de l'acide terephtalique et de diols aliphatiques
FR2420718A1 (fr) * 1978-03-20 1979-10-19 Sev Marchal Reflecteur de projecteur d'eclairage en matiere plastique et projecteur correspondant
EP0071899A1 (fr) * 1981-08-12 1983-02-16 Bayer Ag Procédé de préparation de diisocyanates de 4.4'diphénylméthane-urétdione à bas poids moléculaire
EP0071898A1 (fr) * 1981-08-12 1983-02-16 Bayer Ag Systèmes hétérogènes à un composant, stables à l'entreposage de longue durée, de polyol/diisocyanates de diphénylméthane-urétdione, procédé de leur préparation et leur utilisation pour la synthèse de polyuréthanes à haut poids moléculaire
EP0158263A2 (fr) * 1984-04-13 1985-10-16 Mobay Corporation Compositions de moulage de polyester thermoplastique ayant une performance améliorée à l'impact
EP0197789A2 (fr) * 1985-04-10 1986-10-15 Polyplastics Co. Ltd. Composition de polyester
EP0287953A2 (fr) * 1987-04-24 1988-10-26 BASF Aktiengesellschaft Compositions de polyester thermoplastiques ignifuges
EP0537644A1 (fr) * 1991-10-11 1993-04-21 Yamaha Corporation Fibres de carbone, résines thermoplastiques, leur résin thermoplastique renforcé par des fibres de carbone et leur prepreg
EP0598213A1 (fr) * 1992-10-21 1994-05-25 Bayer Ag Gaine pour fibre optique à base d'un mélange de polytéréphtalate d'alhylène et de polycarbonate

Families Citing this family (35)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5460350A (en) * 1977-10-20 1979-05-15 Toray Ind Inc Thermopastic resin composition
DE2809101A1 (de) * 1978-03-03 1979-09-13 Huels Chemische Werke Ag Verfahren zur herstellung von hochviskosem, thermostabilen polybutylenterephthalat
JPS54132699A (en) * 1978-04-06 1979-10-15 Dainippon Ink & Chem Inc Glass fiber-reinforced resin composition
US4200731A (en) * 1979-02-01 1980-04-29 The Goodyear Tire & Rubber Company Endcapped polyesters
JPS56850A (en) * 1979-06-15 1981-01-07 Dainippon Ink & Chem Inc Glass bead-filled resin composition
JPS56161452A (en) * 1980-05-16 1981-12-11 Toray Ind Inc Polyester resin composition
US4409167A (en) * 1981-01-13 1983-10-11 E. I. Du Pont De Nemours & Co, Process for extruding a modified high molecular weight poly(ethylene terephthalate) resin
DE3273898D1 (en) * 1981-08-17 1986-11-27 Basf Ag Polyethylene terephthalate with hydrolysis resistance, and use thereof
DE3269641D1 (en) * 1981-09-09 1986-04-10 Ciba Geigy Ag Stabilised thermoplastic polyester compositions
JPS596251A (ja) * 1982-07-05 1984-01-13 Dainippon Ink & Chem Inc 難燃性熱可塑性ポリエステル樹脂組成物
DE3401345A1 (de) * 1984-01-17 1985-07-25 Chemische Werke Hüls AG, 4370 Marl Formmassen auf basis von hochmolekularen poly(alkylenterephthalaten)
US4522979A (en) * 1984-02-17 1985-06-11 Mobay Chemical Corporation Molding compositions having an enhanced resistance to gasoline
US4859741A (en) * 1984-04-04 1989-08-22 Polyplastics Co., Ltd. Polyester composition
JPS60210659A (ja) * 1984-04-04 1985-10-23 Polyplastics Co 耐熱水性に優れたポリエステル組成物
US4745148A (en) * 1984-04-13 1988-05-17 Mobay Corporation Thermoplastic polyester molding composition having an improved impact performance
US4542177A (en) * 1984-06-29 1985-09-17 Mobay Chemical Corporation Thermoplastic polyester molding composition having an improved impact performance
DE3506834A1 (de) * 1985-02-27 1986-08-28 Bayer Ag, 5090 Leverkusen Verfahren zur herstellung von additionsverbindungen aus 1 mol dimerisiertem oder niedrig-oligodimerisiertem 4,4'-diisocyanatodiphenylmethan und 2 bis 3 mol 4,4'-diisocyanatodiphenylmethan, entsprechende additionsverbindungen und ihre verwendung zur polyurethanherstellung
DE4031389C2 (de) * 1990-10-04 1993-12-09 Mudder H Europlast Verwendung einer Polymermasse aus Polyester und einem Ethylen-Methacrylsäure-Copolymerisat
JP3228977B2 (ja) * 1991-03-14 2001-11-12 ジョーンズ・マンヴィル・インターナショナル・インコーポレーテッド カルボジイミド変性ポリエステル繊維およびその製造方法
JP3110633B2 (ja) * 1994-02-02 2000-11-20 東レ株式会社 ポリエステル組成物、モノフィラメントおよび工業用織物
DE4435548A1 (de) 1994-10-05 1996-04-11 Rhein Chemie Rheinau Gmbh Stabilisierte Schmierstoff-Grundsubstanz
DE19614871A1 (de) * 1996-04-16 1997-10-23 Huels Chemische Werke Ag Formmasse
US6333363B1 (en) * 1997-07-18 2001-12-25 Nisshinbo Industries, Inc. Method for obtaining polyester resin products having desired strength, and mixture used in said method
US7402622B1 (en) * 2002-10-22 2008-07-22 John Lombardi Powder injection molding composition
US20060122077A1 (en) * 2004-12-03 2006-06-08 Bruce Wilburn Compositions comprising at least one carbodiimide
US7456137B2 (en) 2004-12-03 2008-11-25 Afton Chemical Corporation Compositions comprising at least one carbodiimide
DE102008000352A1 (de) 2008-02-20 2009-08-27 Rhein Chemie Rheinau Gmbh Gusspolyamid-Herstellung unter Verwendung spezieller Aktivatoren
DE102009001130A1 (de) 2009-02-25 2010-08-26 Rhein Chemie Rheinau Gmbh Transformatorölzusammensetzung, umfassend mindestens einen Säurefänger
ES2374490T3 (es) 2009-09-02 2012-02-17 Rhein Chemie Rheinau Gmbh Uso de carbodiimidas como estabilizador de color en adhesivos termofusibles.
EP2292712A1 (fr) 2009-09-02 2011-03-09 Rhein Chemie Rheinau GmbH Utilisation de carbodiimides comme stabilisateurs de couleur dans des adhésifs de contact fusibles
ES2614407T3 (es) * 2011-08-25 2017-05-31 Lanxess Deutschland Gmbh Masas de moldeo termoplásticas con resistencia a la hidrólisis incrementada
CN104292728B (zh) * 2014-09-29 2016-08-24 苏州博利迈新材料科技有限公司 耐热聚对苯二甲酸丁二醇酯材料及其制备方法
KR102523116B1 (ko) 2015-10-30 2023-04-18 도레이 카부시키가이샤 열가소성 폴리에스테르 수지 조성물 및 성형품
US11345780B2 (en) 2017-06-29 2022-05-31 Toray Industries, Inc. Thermoplastic polyester resin composition and molded article
CN113308045B (zh) * 2021-05-28 2022-03-22 宁波市鑫晟工贸实业有限公司 一种抗老化的塑料盒及其制备方法

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2982754A (en) * 1957-11-08 1961-05-02 Schenectady Varnish Company In Polyisocyanate-modified polyester of terephthalic or isophthalic acid, and electrical conductor coated therewith
DE1544913C3 (de) * 1965-09-02 1975-05-07 Bayer Ag, 5090 Leverkusen Stabilisierendes Mittel gegenüber Einflüssen von Wärme und Feuchtigkeit in estergruppenhaltigen Kunststoffen
US3580886A (en) * 1968-06-05 1971-05-25 Fmc Corp Polyesters stabilized with aromatic isocyanates

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2394562A1 (fr) * 1977-06-18 1979-01-12 Dynamit Nobel Ag Polyesters modifies derivant de l'acide terephtalique et de diols aliphatiques
FR2420718A1 (fr) * 1978-03-20 1979-10-19 Sev Marchal Reflecteur de projecteur d'eclairage en matiere plastique et projecteur correspondant
EP0071899A1 (fr) * 1981-08-12 1983-02-16 Bayer Ag Procédé de préparation de diisocyanates de 4.4'diphénylméthane-urétdione à bas poids moléculaire
EP0071898A1 (fr) * 1981-08-12 1983-02-16 Bayer Ag Systèmes hétérogènes à un composant, stables à l'entreposage de longue durée, de polyol/diisocyanates de diphénylméthane-urétdione, procédé de leur préparation et leur utilisation pour la synthèse de polyuréthanes à haut poids moléculaire
EP0158263A3 (fr) * 1984-04-13 1987-10-14 Mobay Corporation Compositions de moulage de polyester thermoplastique ayant une performance améliorée à l'impact
EP0158263A2 (fr) * 1984-04-13 1985-10-16 Mobay Corporation Compositions de moulage de polyester thermoplastique ayant une performance améliorée à l'impact
EP0197789A2 (fr) * 1985-04-10 1986-10-15 Polyplastics Co. Ltd. Composition de polyester
EP0197789A3 (en) * 1985-04-10 1988-07-27 Polyplastics Co. Ltd. Polyester composition
EP0287953A2 (fr) * 1987-04-24 1988-10-26 BASF Aktiengesellschaft Compositions de polyester thermoplastiques ignifuges
EP0287953A3 (en) * 1987-04-24 1989-03-08 Basf Aktiengesellschaft Flame-retardant thermoplastic polyester compositions
EP0537644A1 (fr) * 1991-10-11 1993-04-21 Yamaha Corporation Fibres de carbone, résines thermoplastiques, leur résin thermoplastique renforcé par des fibres de carbone et leur prepreg
US5318847A (en) * 1991-10-11 1994-06-07 Yamaha Corporation Carbodiimide treated carbon fiber and use thereof
EP0598213A1 (fr) * 1992-10-21 1994-05-25 Bayer Ag Gaine pour fibre optique à base d'un mélange de polytéréphtalate d'alhylène et de polycarbonate

Also Published As

Publication number Publication date
US4022752A (en) 1977-05-10
JPS50151953A (fr) 1975-12-06
NL7504818A (nl) 1975-10-28
GB1494843A (en) 1977-12-14
DE2419968A1 (de) 1975-12-18
BE828394A (fr) 1975-10-27
IT1035378B (it) 1979-10-20

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