ES436049A1 - Procedimiento para la preparacion de estabilizadores contra la degradacion termooxidativa. - Google Patents

Procedimiento para la preparacion de estabilizadores contra la degradacion termooxidativa.

Info

Publication number
ES436049A1
ES436049A1 ES436049A ES436049A ES436049A1 ES 436049 A1 ES436049 A1 ES 436049A1 ES 436049 A ES436049 A ES 436049A ES 436049 A ES436049 A ES 436049A ES 436049 A1 ES436049 A1 ES 436049A1
Authority
ES
Spain
Prior art keywords
denotes
conjointly
alkyl
hydrogen
phenyl
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.)
Expired
Application number
ES436049A
Other languages
English (en)
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.)
Novartis AG
Original Assignee
Ciba Geigy AG
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 Ciba Geigy AG filed Critical Ciba Geigy AG
Publication of ES436049A1 publication Critical patent/ES436049A1/es
Expired legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
    • C07F9/00—Compounds containing elements of Groups 5 or 15 of the Periodic Table
    • C07F9/02—Phosphorus compounds
    • C07F9/547—Heterocyclic compounds, e.g. containing phosphorus as a ring hetero atom
    • C07F9/6564—Heterocyclic compounds, e.g. containing phosphorus as a ring hetero atom having phosphorus atoms, with or without nitrogen, oxygen, sulfur, selenium or tellurium atoms, as ring hetero atoms
    • C07F9/6571—Heterocyclic compounds, e.g. containing phosphorus as a ring hetero atom having phosphorus atoms, with or without nitrogen, oxygen, sulfur, selenium or tellurium atoms, as ring hetero atoms having phosphorus and oxygen atoms as the only ring hetero atoms
    • C07F9/6574—Esters of oxyacids of phosphorus
    • C07F9/65746—Esters of oxyacids of phosphorus the molecule containing more than one cyclic phosphorus atom
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C215/00—Compounds containing amino and hydroxy groups bound to the same carbon skeleton
    • C07C215/46—Compounds containing amino and hydroxy groups bound to the same carbon skeleton having hydroxy groups bound to carbon atoms of at least one six-membered aromatic ring and amino groups bound to acyclic carbon atoms or to carbon atoms of rings other than six-membered aromatic rings of the same carbon skeleton
    • C07C215/48—Compounds containing amino and hydroxy groups bound to the same carbon skeleton having hydroxy groups bound to carbon atoms of at least one six-membered aromatic ring and amino groups bound to acyclic carbon atoms or to carbon atoms of rings other than six-membered aromatic rings of the same carbon skeleton with amino groups linked to the six-membered aromatic ring, or to the condensed ring system containing that ring, by carbon chains not further substituted by hydroxy groups
    • C07C215/54—Compounds containing amino and hydroxy groups bound to the same carbon skeleton having hydroxy groups bound to carbon atoms of at least one six-membered aromatic ring and amino groups bound to acyclic carbon atoms or to carbon atoms of rings other than six-membered aromatic rings of the same carbon skeleton with amino groups linked to the six-membered aromatic ring, or to the condensed ring system containing that ring, by carbon chains not further substituted by hydroxy groups linked by carbon chains having at least three carbon atoms between the amino groups and the six-membered aromatic ring or the condensed ring system containing that ring
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C275/00—Derivatives of urea, i.e. compounds containing any of the groups, the nitrogen atoms not being part of nitro or nitroso groups
    • C07C275/04—Derivatives of urea, i.e. compounds containing any of the groups, the nitrogen atoms not being part of nitro or nitroso groups having nitrogen atoms of urea groups bound to acyclic carbon atoms
    • C07C275/20—Derivatives of urea, i.e. compounds containing any of the groups, the nitrogen atoms not being part of nitro or nitroso groups having nitrogen atoms of urea groups bound to acyclic carbon atoms of an unsaturated carbon skeleton
    • C07C275/24—Derivatives of urea, i.e. compounds containing any of the groups, the nitrogen atoms not being part of nitro or nitroso groups having nitrogen atoms of urea groups bound to acyclic carbon atoms of an unsaturated carbon skeleton containing six-membered aromatic rings
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C323/00—Thiols, sulfides, hydropolysulfides or polysulfides substituted by halogen, oxygen or nitrogen atoms, or by sulfur atoms not being part of thio groups
    • C07C323/50—Thiols, sulfides, hydropolysulfides or polysulfides substituted by halogen, oxygen or nitrogen atoms, or by sulfur atoms not being part of thio groups containing thio groups and carboxyl groups bound to the same carbon skeleton
    • C07C323/51—Thiols, sulfides, hydropolysulfides or polysulfides substituted by halogen, oxygen or nitrogen atoms, or by sulfur atoms not being part of thio groups containing thio groups and carboxyl groups bound to the same carbon skeleton having the sulfur atoms of the thio groups bound to acyclic carbon atoms of the carbon skeleton
    • C07C323/52—Thiols, sulfides, hydropolysulfides or polysulfides substituted by halogen, oxygen or nitrogen atoms, or by sulfur atoms not being part of thio groups containing thio groups and carboxyl groups bound to the same carbon skeleton having the sulfur atoms of the thio groups bound to acyclic carbon atoms of the carbon skeleton the carbon skeleton being acyclic and saturated
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C329/00—Thiocarbonic acids; Halides, esters or anhydrides thereof
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C329/00—Thiocarbonic acids; Halides, esters or anhydrides thereof
    • C07C329/02—Monothiocarbonic acids; Derivatives thereof
    • C07C329/04—Esters of monothiocarbonic acids
    • C07C329/06—Esters of monothiocarbonic acids having sulfur atoms of thiocarbonic groups bound to acyclic carbon atoms
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D251/00—Heterocyclic compounds containing 1,3,5-triazine rings
    • C07D251/02—Heterocyclic compounds containing 1,3,5-triazine rings not condensed with other rings
    • C07D251/12—Heterocyclic compounds containing 1,3,5-triazine rings not condensed with other rings having three double bonds between ring members or between ring members and non-ring members
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
    • C07F7/00—Compounds containing elements of Groups 4 or 14 of the Periodic Table
    • C07F7/02—Silicon compounds
    • C07F7/08—Compounds having one or more C—Si linkages
    • C07F7/18—Compounds having one or more C—Si linkages as well as one or more C—O—Si linkages
    • C07F7/1804—Compounds having Si-O-C linkages
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
    • C07F9/00—Compounds containing elements of Groups 5 or 15 of the Periodic Table
    • C07F9/02—Phosphorus compounds
    • C07F9/06—Phosphorus compounds without P—C bonds
    • C07F9/08—Esters of oxyacids of phosphorus
    • C07F9/09—Esters of phosphoric acids
    • C07F9/094—Esters of phosphoric acids with arylalkanols
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
    • C07F9/00—Compounds containing elements of Groups 5 or 15 of the Periodic Table
    • C07F9/02—Phosphorus compounds
    • C07F9/06—Phosphorus compounds without P—C bonds
    • C07F9/08—Esters of oxyacids of phosphorus
    • C07F9/141—Esters of phosphorous acids
    • C07F9/1414—Esters of phosphorous acids with arylalkanols
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
    • C07F9/00—Compounds containing elements of Groups 5 or 15 of the Periodic Table
    • C07F9/02—Phosphorus compounds
    • C07F9/06—Phosphorus compounds without P—C bonds
    • C07F9/08—Esters of oxyacids of phosphorus
    • C07F9/141—Esters of phosphorous acids
    • C07F9/145—Esters of phosphorous acids with hydroxyaryl compounds
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
    • C07F9/00—Compounds containing elements of Groups 5 or 15 of the Periodic Table
    • C07F9/02—Phosphorus compounds
    • C07F9/06—Phosphorus compounds without P—C bonds
    • C07F9/22—Amides of acids of phosphorus
    • C07F9/24—Esteramides
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
    • C07F9/00—Compounds containing elements of Groups 5 or 15 of the Periodic Table
    • C07F9/02—Phosphorus compounds
    • C07F9/06—Phosphorus compounds without P—C bonds
    • C07F9/22—Amides of acids of phosphorus
    • C07F9/24—Esteramides
    • C07F9/2454—Esteramides the amide moiety containing a substituent or a structure which is considered as characteristic
    • C07F9/2475—Esteramides the amide moiety containing a substituent or a structure which is considered as characteristic of aralkylamines
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
    • C07F9/00—Compounds containing elements of Groups 5 or 15 of the Periodic Table
    • C07F9/02—Phosphorus compounds
    • C07F9/28—Phosphorus compounds with one or more P—C bonds
    • C07F9/30—Phosphinic acids [R2P(=O)(OH)]; Thiophosphinic acids ; [R2P(=X1)(X2H) (X1, X2 are each independently O, S or Se)]
    • C07F9/32—Esters thereof
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
    • C07F9/00—Compounds containing elements of Groups 5 or 15 of the Periodic Table
    • C07F9/02—Phosphorus compounds
    • C07F9/28—Phosphorus compounds with one or more P—C bonds
    • C07F9/38—Phosphonic acids [RP(=O)(OH)2]; Thiophosphonic acids ; [RP(=X1)(X2H)2(X1, X2 are each independently O, S or Se)]
    • C07F9/40—Esters thereof
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
    • C07F9/00—Compounds containing elements of Groups 5 or 15 of the Periodic Table
    • C07F9/02—Phosphorus compounds
    • C07F9/28—Phosphorus compounds with one or more P—C bonds
    • C07F9/38—Phosphonic acids [RP(=O)(OH)2]; Thiophosphonic acids ; [RP(=X1)(X2H)2(X1, X2 are each independently O, S or Se)]
    • C07F9/40—Esters thereof
    • C07F9/4003—Esters thereof the acid moiety containing a substituent or a structure which is considered as characteristic
    • C07F9/4006—Esters of acyclic acids which can have further substituents on alkyl
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
    • C07F9/00—Compounds containing elements of Groups 5 or 15 of the Periodic Table
    • C07F9/02—Phosphorus compounds
    • C07F9/28—Phosphorus compounds with one or more P—C bonds
    • C07F9/38—Phosphonic acids [RP(=O)(OH)2]; Thiophosphonic acids ; [RP(=X1)(X2H)2(X1, X2 are each independently O, S or Se)]
    • C07F9/40—Esters thereof
    • C07F9/4071—Esters thereof the ester moiety containing a substituent or a structure which is considered as characteristic
    • C07F9/4087—Esters with arylalkanols
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
    • C07F9/00—Compounds containing elements of Groups 5 or 15 of the Periodic Table
    • C07F9/02—Phosphorus compounds
    • C07F9/547—Heterocyclic compounds, e.g. containing phosphorus as a ring hetero atom
    • C07F9/6564—Heterocyclic compounds, e.g. containing phosphorus as a ring hetero atom having phosphorus atoms, with or without nitrogen, oxygen, sulfur, selenium or tellurium atoms, as ring hetero atoms
    • C07F9/6571—Heterocyclic compounds, e.g. containing phosphorus as a ring hetero atom having phosphorus atoms, with or without nitrogen, oxygen, sulfur, selenium or tellurium atoms, as ring hetero atoms having phosphorus and oxygen atoms as the only ring hetero atoms
    • C07F9/6574—Esters of oxyacids of phosphorus
    • C07F9/65742—Esters of oxyacids of phosphorus non-condensed with carbocyclic rings or heterocyclic rings or ring systems

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Biochemistry (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Molecular Biology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Anti-Oxidant Or Stabilizer Compositions (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Polymers With Sulfur, Phosphorus Or Metals In The Main Chain (AREA)
  • Fats And Perfumes (AREA)
  • Lubricants (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
ES436049A 1974-03-27 1975-03-26 Procedimiento para la preparacion de estabilizadores contra la degradacion termooxidativa. Expired ES436049A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH428274A CH590893A5 (es) 1974-03-27 1974-03-27

Publications (1)

Publication Number Publication Date
ES436049A1 true ES436049A1 (es) 1977-05-01

Family

ID=4273199

Family Applications (1)

Application Number Title Priority Date Filing Date
ES436049A Expired ES436049A1 (es) 1974-03-27 1975-03-26 Procedimiento para la preparacion de estabilizadores contra la degradacion termooxidativa.

Country Status (15)

Country Link
US (1) US4333868A (es)
JP (1) JPS50134987A (es)
AT (1) AT338531B (es)
AU (1) AU7949475A (es)
BE (1) BE827194A (es)
CA (1) CA1042908A (es)
CH (1) CH590893A5 (es)
DE (1) DE2512895A1 (es)
ES (1) ES436049A1 (es)
FR (1) FR2274587A1 (es)
GB (1) GB1504573A (es)
IL (1) IL46942A0 (es)
NL (1) NL7503632A (es)
SE (1) SE7502397L (es)
ZA (1) ZA751913B (es)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD149508A5 (de) * 1978-08-04 1981-07-15 Uniroyal Inc Verfahren zur hemmung des oxydativen abbaus eines organischen stoffes
DE2933206A1 (de) * 1978-08-18 1980-02-28 Ciba Geigy Ag Phenolhaltige silane und deren verwendung als schmiermittelzusaetze
JPS5522678A (en) * 1979-06-06 1980-02-18 Borg Warner Hindered phenolaldehyde and its manufacture
US4267358A (en) * 1980-03-13 1981-05-12 Borg-Warner Corporation Phenolic ester inhibitor
US4434109A (en) 1980-06-16 1984-02-28 Ciba-Geigy Corporation Phosphonous acid monoester-monoamides
IT1209544B (it) * 1984-05-21 1989-08-30 Anic Spa Stabilizzazione di polimeri organici.
DE3800295A1 (de) * 1988-01-08 1989-07-20 Huels Chemische Werke Ag Phenolische urethan- und harnstoffderivate und damit stabilisiertes organisches material
DE3800294A1 (de) * 1988-01-08 1989-07-20 Huels Chemische Werke Ag Urethanderivate von gehinderten phenolalkoholen und damit stabilisiertes organisches material
US5510402A (en) * 1992-02-24 1996-04-23 Ciba-Geigy Corporation Carboxylic acid esters of hydroxyphenylalkanols as stabilizers
DE69522852T2 (de) * 1994-05-19 2002-05-02 General Electric Co., Schenectady Stabilisatorzusammensetzung
RU2156264C2 (ru) * 1996-07-09 2000-09-20 Емс-Инвента АГ Устойчивый к атмосферным воздействиям полиамид и способ его получения (варианты)
US7320764B2 (en) * 2001-03-02 2008-01-22 Dover Chemical Corporation Phosphite ester additive compositions
CA2439887A1 (en) 2001-03-02 2002-09-12 Dover Chemical, Inc. Phosphite ester additive compositions
US20040199028A1 (en) * 2001-12-20 2004-10-07 Harper D. Scott Non-halogenated hydroxyalkyl-substituted phenol compounds, antimicrobial compositions containing the same, and methods of using the same
US20040087687A1 (en) * 2002-10-30 2004-05-06 Vantico A&T Us Inc. Photocurable compositions with phosphite viscosity stabilizers
KR20090006194A (ko) * 2006-04-13 2009-01-14 사이텍 테크놀러지 코포레이션 안정화된 스판덱스 조성물
EP2465842A1 (de) 2010-12-17 2012-06-20 Sika Technology AG Amine mit sekundären aliphatischen Aminogruppen
JP6351519B2 (ja) 2015-02-12 2018-07-04 住友化学株式会社 亜リン酸化合物、その製造方法及びその用途

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3017422A (en) * 1958-01-08 1962-01-16 Universal Oil Prod Co Composition of matter
US3281505A (en) * 1963-09-12 1966-10-25 Geigy Chem Corp Dialkylhydroxyethanephosphonates and dialkylhydroxybenzylphosphonates
US3361846A (en) * 1964-07-09 1968-01-02 Goodyear Tire & Rubber Phenolic phosphate and phosphite esters as stabilizers for saturated polyester resins
US3927091A (en) * 1967-06-23 1975-12-16 Ciba Geigy Corp Carboxylic acid amides
US3763287A (en) * 1970-09-28 1973-10-02 Gaf Corp Phosphorus containing derivatives of omega-(3,5-dialkyl-4-hydroxyphenyl)alkanols
US3795700A (en) * 1971-03-10 1974-03-05 American Cyanamid Co Esters of 4-alkyl-2,6-dimethyl-3-hydroxybenzyl alcohol
US4067895A (en) * 1972-04-28 1978-01-10 Sandoz Ltd N-(para-hydroxybiphenyl)amides
US4104287A (en) * 1973-02-24 1978-08-01 Basf Aktiengesellschaft 4-M,M'-Di-t-butyl-p-hydroxyphenyl) butyl-2 compounds
DE2309435A1 (de) * 1973-02-24 1974-09-05 Basf Ag Verfahren zum stabilisieren von polyamiden
US4091225A (en) * 1974-01-22 1978-05-23 The Goodyear Tire & Rubber Company Antioxidant ester substituted phenols and process for their preparation
US4132702A (en) * 1974-03-27 1979-01-02 Ciba-Geigy Corporation Phenol esters and amides and polymers stabilized therewith
US4069200A (en) * 1974-07-26 1978-01-17 Ciba-Geigy Corporation 2,3,5-Trialkyl-4-hydroxybenzylphosphonates and phosphinates
US3975360A (en) * 1974-12-20 1976-08-17 The Goodyear Tire & Rubber Company Age resisters for oxidizable polymers

Also Published As

Publication number Publication date
IL46942A0 (en) 1975-05-22
FR2274587A1 (fr) 1976-01-09
FR2274587B1 (es) 1981-01-02
DE2512895A1 (de) 1975-10-02
SE7502397L (sv) 1975-11-26
NL7503632A (nl) 1975-09-30
ZA751913B (en) 1976-02-25
CA1042908A (en) 1978-11-21
AT338531B (de) 1977-08-25
US4333868A (en) 1982-06-08
ATA227775A (de) 1976-12-15
BE827194A (fr) 1975-09-26
JPS50134987A (es) 1975-10-25
CH590893A5 (es) 1977-08-31
GB1504573A (en) 1978-03-22
AU7949475A (en) 1976-09-30

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