CA2179169A1 - Synthetic ester lubricant stabilizer composition - Google Patents

Synthetic ester lubricant stabilizer composition

Info

Publication number
CA2179169A1
CA2179169A1 CA002179169A CA2179169A CA2179169A1 CA 2179169 A1 CA2179169 A1 CA 2179169A1 CA 002179169 A CA002179169 A CA 002179169A CA 2179169 A CA2179169 A CA 2179169A CA 2179169 A1 CA2179169 A1 CA 2179169A1
Authority
CA
Canada
Prior art keywords
diphenylamine
reaction
products
aryl naphthylamine
naphthylamine
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.)
Granted
Application number
CA002179169A
Other languages
French (fr)
Other versions
CA2179169C (en
Inventor
John Ta-Yuan Lai
Deborah S. Filla
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.)
Emerald Polymer Additives LLC
Original Assignee
Individual
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 Individual filed Critical Individual
Priority claimed from PCT/US1994/014539 external-priority patent/WO1995016765A2/en
Publication of CA2179169A1 publication Critical patent/CA2179169A1/en
Application granted granted Critical
Publication of CA2179169C publication Critical patent/CA2179169C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01SRADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S5/00Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
    • G01S5/0009Transmission of position information to remote stations
    • G01S5/0045Transmission from base station to mobile station
    • G01S5/0063Transmission from base station to mobile station of measured values, i.e. measurement on base station and position calculation on mobile
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01SRADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S5/00Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
    • G01S5/0009Transmission of position information to remote stations
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01SRADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S5/00Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
    • G01S5/0009Transmission of position information to remote stations
    • G01S5/009Transmission of differential positioning data to mobile
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01SRADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S5/00Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
    • G01S5/02Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations using radio waves
    • G01S5/10Position of receiver fixed by co-ordinating a plurality of position lines defined by path-difference measurements, e.g. omega or decca systems
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01SRADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S5/00Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
    • G01S5/02Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations using radio waves
    • G01S5/14Determining absolute distances from a plurality of spaced points of known location
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B7/00Radio transmission systems, i.e. using radiation field
    • H04B7/14Relay systems
    • H04B7/15Active relay systems
    • H04B7/185Space-based or airborne stations; Stations for satellite systems
    • H04B7/1853Satellite systems for providing telephony service to a mobile station, i.e. mobile satellite service
    • H04B7/18545Arrangements for managing station mobility, i.e. for station registration or localisation
    • H04B7/18547Arrangements for managing station mobility, i.e. for station registration or localisation for geolocalisation of a station
    • H04B7/1855Arrangements for managing station mobility, i.e. for station registration or localisation for geolocalisation of a station using a telephonic control signal, e.g. propagation delay variation, Doppler frequency variation, power variation, beam identification

Abstract

An antioxidant stabilizer composition is disclosed that is the reaction product of a diphenylamine and an N-aryl naphthylamine in the presence of an organic peroxide. The mole ratio of diphenylamine: N-aryl naphthylamine is from 1:1 to 10:1. This results in more oligomeric reaction products and significantly less unreacted monomeric residual reactants. The resultant product composition comprises diphenylamine homooligomers and diphenylamine/N-aryl naphthylamine cross oligomers. The diphenylamine and N-aryl naphthylamine are desirably substituted with alkyl groups having from 1 to 20 carbon atoms or styryl groups. The reaction temperature is preferably from about 130° to 150°C. The controlled reaction conditions allow the use of solvents with extractable hydrogen atoms without producing significant amounts of dehydrocondensation between the solvent and the diamines. The reaction products have superior oxidative resistance in the Oxidation Corrosion Stability Test (OCS) and Vapor Phase Coker Test over products products produced under other conditions.
CA002179169A 1993-12-15 1994-12-15 Synthetic ester lubricant stabilizer composition Expired - Lifetime CA2179169C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US08/168,851 US5499032A (en) 1992-12-22 1993-12-15 Navigation and positioning system and method using uncoordinated beacon signals
US08/166,851 1993-12-15
PCT/US1994/014539 WO1995016765A2 (en) 1993-12-15 1994-12-15 Synthetic ester lubricant stabilizer composition

Publications (2)

Publication Number Publication Date
CA2179169A1 true CA2179169A1 (en) 1995-06-22
CA2179169C CA2179169C (en) 2005-07-26

Family

ID=22613193

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002179169A Expired - Lifetime CA2179169C (en) 1993-12-15 1994-12-15 Synthetic ester lubricant stabilizer composition

Country Status (2)

Country Link
US (2) US5499032A (en)
CA (1) CA2179169C (en)

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Also Published As

Publication number Publication date
US5499032A (en) 1996-03-12
CA2179169C (en) 2005-07-26
US5689270A (en) 1997-11-18

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