ES554256A0 - Procedimiento para la obtencion de arilofosfinas. - Google Patents

Procedimiento para la obtencion de arilofosfinas.

Info

Publication number: ES554256A0
Authority: ES; Spain
Prior art keywords: arylphosphines; chains; arylophosphines; procedure; obtaining
Prior art date: 1985-04-24
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.): Granted

Application number

ES554256A

Other languages

English (en)

Other versions

ES8900088A1 (es

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.)

Syensqo Specialty Polymers Italy SpA

Original Assignee

Ausimont SpA

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.)

1985-04-24

Filing date

1986-04-23

Publication date

1988-12-01

1986-04-23 Application filed by Ausimont SpA filed Critical Ausimont SpA

1988-12-01 Publication of ES8900088A1 publication Critical patent/ES8900088A1/es

1988-12-01 Publication of ES554256A0 publication Critical patent/ES554256A0/es

Status Expired legal-status Critical Current

Links

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
- C07F9/28—Phosphorus compounds with one or more P—C bonds
- C07F9/50—Organo-phosphines
- 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
- C07F9/50—Organo-phosphines
- C07F9/53—Organo-phosphine oxides; Organo-phosphine thioxides
- C07F9/5325—Aromatic phosphine oxides or thioxides (P-C aromatic linkage)
- 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
- C07F9/50—Organo-phosphines
- C07F9/5022—Aromatic phosphines (P-C aromatic linkage)
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M107/00—Lubricating compositions characterised by the base-material being a macromolecular compound
- C10M107/38—Lubricating compositions characterised by the base-material being a macromolecular compound containing halogen
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M137/00—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing phosphorus
- C10M137/12—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing phosphorus having a phosphorus-to-carbon bond
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M137/00—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing phosphorus
- C10M137/12—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing phosphorus having a phosphorus-to-carbon bond
- C10M137/14—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing phosphorus having a phosphorus-to-carbon bond containing sulfur
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M169/00—Lubricating compositions characterised by containing as components a mixture of at least two types of ingredient selected from base-materials, thickeners or additives, covered by the preceding groups, each of these compounds being essential
- C10M169/04—Mixtures of base-materials and additives
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2213/00—Organic macromolecular compounds containing halogen as ingredients in lubricant compositions
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2213/00—Organic macromolecular compounds containing halogen as ingredients in lubricant compositions
- C10M2213/02—Organic macromolecular compounds containing halogen as ingredients in lubricant compositions obtained from monomers containing carbon, hydrogen and halogen only
- C10M2213/023—Organic macromolecular compounds containing halogen as ingredients in lubricant compositions obtained from monomers containing carbon, hydrogen and halogen only used as base material
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2213/00—Organic macromolecular compounds containing halogen as ingredients in lubricant compositions
- C10M2213/04—Organic macromolecular compounds containing halogen as ingredients in lubricant compositions obtained from monomers containing carbon, hydrogen, halogen and oxygen
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2213/00—Organic macromolecular compounds containing halogen as ingredients in lubricant compositions
- C10M2213/04—Organic macromolecular compounds containing halogen as ingredients in lubricant compositions obtained from monomers containing carbon, hydrogen, halogen and oxygen
- C10M2213/043—Organic macromolecular compounds containing halogen as ingredients in lubricant compositions obtained from monomers containing carbon, hydrogen, halogen and oxygen used as base material
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2213/00—Organic macromolecular compounds containing halogen as ingredients in lubricant compositions
- C10M2213/06—Perfluoro polymers
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2213/00—Organic macromolecular compounds containing halogen as ingredients in lubricant compositions
- C10M2213/06—Perfluoro polymers
- C10M2213/0606—Perfluoro polymers used as base material
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2213/00—Organic macromolecular compounds containing halogen as ingredients in lubricant compositions
- C10M2213/06—Perfluoro polymers
- C10M2213/062—Polytetrafluoroethylene [PTFE]
- C10M2213/0623—Polytetrafluoroethylene [PTFE] used as base material
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2223/00—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions
- C10M2223/06—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions having phosphorus-to-carbon bonds
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2223/00—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions
- C10M2223/06—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions having phosphorus-to-carbon bonds
- C10M2223/061—Metal salts
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2223/00—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions
- C10M2223/06—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions having phosphorus-to-carbon bonds
- C10M2223/065—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions having phosphorus-to-carbon bonds containing sulfur

Landscapes

Chemical & Material Sciences (AREA)
Organic Chemistry (AREA)
Chemical Kinetics & Catalysis (AREA)
General Chemical & Material Sciences (AREA)
Oil, Petroleum & Natural Gas (AREA)
Life Sciences & Earth Sciences (AREA)
Health & Medical Sciences (AREA)
Biochemistry (AREA)
General Health & Medical Sciences (AREA)
Molecular Biology (AREA)
Lubricants (AREA)
Compositions Of Macromolecular Compounds (AREA)
Fats And Perfumes (AREA)

ES554256A 1985-04-24 1986-04-23 Procedimiento para la obtencion de arilofosfinas. Expired ES8900088A1 (es)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
IT20475/85A IT1188166B (it)	1985-04-24	1985-04-24	Stabilizzanti a struttura arilfosfinica per olii e grassi perfluoropolieterei

Publications (2)

Publication Number	Publication Date
ES8900088A1 ES8900088A1 (es)	1988-12-01
ES554256A0 true ES554256A0 (es)	1988-12-01

Family

ID=11167501

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
ES554256A Expired ES8900088A1 (es)	1985-04-24	1986-04-23	Procedimiento para la obtencion de arilofosfinas.

Country Status (13)

Country	Link
US (1)	US4681693A (es)
EP (1)	EP0203347B1 (es)
JP (1)	JPH0753744B2 (es)
KR (1)	KR940005343B1 (es)
AT (1)	ATE72441T1 (es)
AU (1)	AU586239B2 (es)
CA (1)	CA1272203A (es)
CS (1)	CS262668B2 (es)
DE (1)	DE3683801D1 (es)
ES (1)	ES8900088A1 (es)
IL (1)	IL78525A (es)
IT (1)	IT1188166B (es)
ZA (1)	ZA862862B (es)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE3712132A1 (de) *	1987-04-10	1988-10-20	Grill Max Gmbh	Schmiermittel bzw. schmiermittelkonzentrat
DE3712133A1 (de) *	1987-04-10	1988-10-20	Siwa Gmbh	Schmiermittel bzw. schmiermittelkonzentrat
US5118431A (en) *	1990-06-01	1992-06-02	The Dow Chemical Company	Phthalonitriles and phthalocyanines as lubricity-enhancing additives
IT1251577B (it) *	1991-10-02	1995-05-17	Ausimont Spa	Olii e grassi lubrificanti.
IT1256304B (it) *	1992-11-10	1995-11-30	Ausimont Spa	Derivati fosfazenici e loro impiego come stabilizzanti per oli e grassi a base di perfluoropolieteri
USH1537H (en)	1994-12-01	1996-06-04	The United States Of America As Represented By The Secretary Of The Air Force	Perfluorinated polyether lubricant compositions
GB0001859D0 (en) *	2000-01-28	2000-03-22	Univ Liverpool	A method of generating a functionalised arylphosphine
JP3743495B2 (ja) *	2000-07-10	2006-02-08	信越化学工業株式会社	硬化性フルオロポリエーテルゴム組成物
WO2002071183A2 (en) *	2001-02-28	2002-09-12	Wily Technology, Inc.	Detecting a stalled routine
ITMI20020804A1 (it) *	2002-04-17	2003-10-17	Ausimont Spa	Additivi per oli perfluoropolieterei
ITMI20042238A1 (it) *	2004-11-19	2005-02-19	Solvay Solexis Spa	Composti per fluoropolirterei
US7405296B2 (en) *	2005-04-14	2008-07-29	Solvay Solexis S.P.A.	Additives for fluorinated oils
TW200712196A (en) *	2005-04-28	2007-04-01	Sony Corp	Lubricant composition and article, disk molding stamper, disk molding apparatus, disk forming method, method of forming lubrication coating
US20060287559A1 (en) *	2005-06-17	2006-12-21	Friesen Chadron M	Insulated perfluoropolyether alkyl alcohols
US7285673B2 (en) *	2005-06-27	2007-10-23	E.I. Du Pont De Nemours And Company	Process for fluoro derivative-substituted aryl pnictogens and their oxides
US7569527B2 (en)	2005-06-27	2009-08-04	E.I. Dupont De Nemours And Company	Fluoro derivative-substituted aryl pnictogens and their oxides
US7838475B2 (en) *	2005-09-01	2010-11-23	E.I. Du Pont De Nemours And Company	Composition comprising perfluoropolyether
JP5258779B2 (ja) *	2006-11-30	2013-08-07	ソルヴェイ・スペシャルティ・ポリマーズ・イタリー・エッセ・ピ・ア	フッ素化潤滑剤
TWI477532B (zh) *	2010-01-06	2015-03-21	Univ Nat Yunlin Sci & Tech	Phosphorous star-shaped polyaniline and its manufacturing method and composite material manufacturing method thereof
US10351669B2 (en)	2014-11-19	2019-07-16	Solvay Specialty Polymers Italy S.P.A.	Amino derivatives of perfluoropolyethers

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US3393151A (en) *	1965-07-28	1968-07-16	Air Force Usa	Perfluorinated aliphatic polyether lubricant with a perfluorinated phenyl compound additive
US3483129A (en) *	1968-02-13	1969-12-09	Us Air Force	Perfluorinated substituted phenyl phosphine lubricant additives
US4011267A (en) *	1975-11-06	1977-03-08	The United States Of America As Represented By The Secretary Of The Air Force	Perfluoroalkylether substituted aryl phosphines and their synthesis
US4097388A (en) *	1976-10-12	1978-06-27	The United States Of America As Represented By The Secretary Of The Air Force	Linear fluorinated polyether lubricant compositions containing perfluoroalkylether substituted phosphines
IT1152230B (it) *	1982-05-31	1986-12-31	Montedison Spa	Procedimento per la preparazione di grassi lubrificanti a base di politetrafluoroetilene e perfluoropolieteri
US4431555A (en) *	1982-09-14	1984-02-14	The United States Of America As Represented By The Secretary Of The Air Force	Oxidation stable polyfluoroalkylether grease compositions
US4454349A (en) *	1982-09-14	1984-06-12	The United States Of America As Represented By The Secretary Of The Air Force	Perfluoroalkylether substituted phenyl phosphines
US4431556A (en) *	1982-09-14	1984-02-14	The United States Of America As Represented By The Secretary Of The Air Force	Oxidation stable polyfluoroalkylether grease compositions
US4438007A (en) *	1982-09-14	1984-03-20	The United States Of America As Represented By The Secretary Of The Air Force	Perfluorinated aliphatic polyalkylether lubricant with an additive composed of an aromatic phosphine substituted with perfluoroalkylether groups

1985
- 1985-04-24 IT IT20475/85A patent/IT1188166B/it active
1986
- 1986-04-16 ZA ZA862862A patent/ZA862862B/xx unknown
- 1986-04-16 IL IL78525A patent/IL78525A/xx not_active IP Right Cessation
- 1986-04-17 AU AU56326/86A patent/AU586239B2/en not_active Ceased
- 1986-04-17 EP EP86105358A patent/EP0203347B1/en not_active Expired - Lifetime
- 1986-04-17 DE DE8686105358T patent/DE3683801D1/de not_active Expired - Lifetime
- 1986-04-17 AT AT86105358T patent/ATE72441T1/de not_active IP Right Cessation
- 1986-04-22 CA CA000507218A patent/CA1272203A/en not_active Expired - Lifetime
- 1986-04-23 US US06/854,786 patent/US4681693A/en not_active Expired - Lifetime
- 1986-04-23 ES ES554256A patent/ES8900088A1/es not_active Expired
- 1986-04-24 KR KR1019860003152A patent/KR940005343B1/ko not_active Expired - Lifetime
- 1986-04-24 CS CS862988A patent/CS262668B2/cs unknown
- 1986-04-24 JP JP61093500A patent/JPH0753744B2/ja not_active Expired - Lifetime

Also Published As

Publication number	Publication date
IL78525A0 (en)	1986-08-31
CS262668B2 (en)	1989-03-14
KR860008197A (ko)	1986-11-12
EP0203347B1 (en)	1992-02-05
IL78525A (en)	1991-07-18
US4681693A (en)	1987-07-21
JPS61257994A (ja)	1986-11-15
IT1188166B (it)	1988-01-07
AU5632686A (en)	1986-10-30
IT8520475A0 (it)	1985-04-24
ES8900088A1 (es)	1988-12-01
EP0203347A2 (en)	1986-12-03
DE3683801D1 (de)	1992-03-19
KR940005343B1 (ko)	1994-06-17
ZA862862B (en)	1986-12-30
AU586239B2 (en)	1989-07-06
CA1272203A (en)	1990-07-31
CS298886A2 (en)	1988-08-16
JPH0753744B2 (ja)	1995-06-07
ATE72441T1 (de)	1992-02-15
EP0203347A3 (en)	1988-08-31

Publication	Publication Date	Title
ES554256A0 (es)	1988-12-01	Procedimiento para la obtencion de arilofosfinas.
HK8187A (en)	1987-01-28	Lubricating oil composition
GB1511585A (en)	1978-05-24	Method of lubricating metallic surfaces in frictional contact
GB1522962A (en)	1978-08-31	Lubricating oil composition
ITMI922569A1 (it)	1994-05-10	Derivati fosfazenici e loro impiego come stabilizzanti per oli e grassi a base di perfluoropolieteri
ES8307219A1 (es)	1983-07-01	Un procedimiento para la preparacion de nuevos derivados del acido 1-(ciclohexil)-4-aril-4-piperidincarboxilico.
ATE14592T1 (de)	1985-08-15	Polymerstabilisatoren.
ES8106718A1 (es)	1981-09-01	Un procedimiento para la preparacion de derivados del 2,3- dihidro-5- acilbenzofuranos 2,6,7- trisustituidos.
ATE77626T1 (de)	1992-07-15	Organische phosphinsaeureverbindungen.
FI885036A0 (fi)	1988-11-01	Hiilivetykoostumus, kuten polttoaineöljy, ja sen lisäaineet
JPS53102307A (en)	1978-09-06	Lubricating oil composition
FI884131A0 (fi)	1988-09-08	Testikoostumus ja -väline vetyperoksidin määrittämiseksi visuaalisesti
SE8700097L (sv)	1987-01-13	Sjelsmorjande antifriktionskomposition
ES8105333A1 (es)	1981-06-01	Un procedimiento para obtener una sal metalica mixta.
GB1357745A (en)	1974-06-26	Lubricating oil compositions
ES541148A0 (es)	1985-12-16	Un procedimiento para producir acero aleado
ATE26729T1 (de)	1987-05-15	Vaselin- oder kohlenwasserstoffparaffinoxidatezusammensetzung.
MX6363E (es)	1985-05-21	Metodo mejorado para la produccion de una aleacion a base de hierro,resistente al desgaste,para utilizarse en carros ferroviarios
RU94002480A (ru)	1995-08-27	Арилфосфины и смазочные композиции на их основе
KR830006140A (ko)	1983-09-17	카복실산 그룹을 트리클로로메틸그룹으로 전환시키는 방법
ATE80156T1 (de)	1992-09-15	Polyaralkylierte hydroxybenzamide, verfahren zu ihrer herstellung und ihre verwendung.
JPS57108180A (en)	1982-07-06	Friction material
DE3374041D1 (en)	1987-11-12	Combination electrodes for the electric steel production with protective jacket of temperature resistant materials on its metal shaft
SU663750A1 (ru)	1979-05-25	Немагнитна сталь
JPS5597420A (en)	1980-07-24	Dephosphorization of steel and alloy