GB1115774A - Self-lubricating urethane-urea copolymer bearing compositions and bearings therefrom - Google Patents

Self-lubricating urethane-urea copolymer bearing compositions and bearings therefrom

Info

Publication number
GB1115774A
GB1115774A GB38393/65A GB3839365A GB1115774A GB 1115774 A GB1115774 A GB 1115774A GB 38393/65 A GB38393/65 A GB 38393/65A GB 3839365 A GB3839365 A GB 3839365A GB 1115774 A GB1115774 A GB 1115774A
Authority
GB
United Kingdom
Prior art keywords
acid
prepolymer
amine
excess
urethane
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
GB38393/65A
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.)
Clevite Corp
Original Assignee
Clevite 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
Priority claimed from US442571A external-priority patent/US3383144A/en
Application filed by Clevite Corp filed Critical Clevite Corp
Publication of GB1115774A publication Critical patent/GB1115774A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/02—Parts of sliding-contact bearings
    • F16C33/04—Brasses; Bushes; Linings
    • F16C33/20—Sliding surface consisting mainly of plastics
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/02—Parts of sliding-contact bearings
    • F16C33/04—Brasses; Bushes; Linings
    • F16C33/20—Sliding surface consisting mainly of plastics
    • F16C33/201—Composition of the plastic
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/02—Parts of sliding-contact bearings
    • F16C33/04—Brasses; Bushes; Linings
    • F16C33/20—Sliding surface consisting mainly of plastics
    • F16C33/208—Methods of manufacture, e.g. shaping, applying coatings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2208/00—Plastics; Synthetic resins, e.g. rubbers
    • F16C2208/10—Elastomers; Rubbers
    • F16C2208/12—Polyurethan [PU]
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2240/00—Specified values or numerical ranges of parameters; Relations between them
    • F16C2240/06—Temperature

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Polyurethanes Or Polyureas (AREA)
  • Sliding-Contact Bearings (AREA)

Abstract

Urethane-urea copolymers are prepared by reacting at 90 DEG to 130 DEG C. (a) a polyurethane prepolymer having a M.W. of 1000-5000, containing 2 to 10% by weight of free isocyanate groups and being the reaction product of an excess of an aromatic diisocyanate and a dihydric compound, (b) an amine containing at least two primary amine groups, the amine being present in an amount of 30% less than 20% in excess of the amount stoichiometrically required to react with the free isocyanate radicals in (a), and (c) 2 to 5% by weight based on the prepolymer of a fatty acid having 12 to 26 carbon atoms and containing not more than one unsaturated carton-to-carbon bond therein; and continuing the reaction until a copolymer is obtained having a Shore A hardness of at least 50 measured at 100 DEG C. Preferred dihydric compounds used to form the prepolymer are polyethers and polyesters whilst the preferred diisocyanates are the toluylene diisocyanates. Suitable amines are phenylene diamines 4,41-diaminodiphenyl, 4,41-diaminodiphenylmethane and especially 4,41-methylene-bis-(2-chloroaniline) The fatty acid may be stearic acid, palmitic acid, oleic acid, lauric acid and erucic acid. Microfine graphite and silicone oils may be added to the copolymer forming reaction mixture. The copolymers are especially suitable in the production of selflubricating bearings (see Division F2).
GB38393/65A 1964-09-24 1965-09-08 Self-lubricating urethane-urea copolymer bearing compositions and bearings therefrom Expired GB1115774A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US39900764A 1964-09-24 1964-09-24
US442571A US3383144A (en) 1965-03-12 1965-03-12 Self-lubricating urethane-urea copolymer bearing

Publications (1)

Publication Number Publication Date
GB1115774A true GB1115774A (en) 1968-05-29

Family

ID=27016465

Family Applications (1)

Application Number Title Priority Date Filing Date
GB38393/65A Expired GB1115774A (en) 1964-09-24 1965-09-08 Self-lubricating urethane-urea copolymer bearing compositions and bearings therefrom

Country Status (4)

Country Link
DE (1) DE1283525B (en)
FR (1) FR1450876A (en)
GB (1) GB1115774A (en)
SE (1) SE318725B (en)

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1089161B (en) * 1955-02-17 1960-09-15 Lemfoerder Metallwarengesellsc Production of polyurethane elastomers with a low coefficient of friction using the casting process
DE1044532B (en) * 1957-04-16 1958-11-20 Lemfoerder Metallwarengesellsc Plastic bearing bushes, in particular made of polyurethane

Also Published As

Publication number Publication date
FR1450876A (en) 1966-06-24
DE1283525B (en) 1968-11-21
SE318725B (en) 1969-12-15

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