FR2242415A1 - - Google Patents

Info

Publication number
FR2242415A1
FR2242415A1 FR7428798A FR7428798A FR2242415A1 FR 2242415 A1 FR2242415 A1 FR 2242415A1 FR 7428798 A FR7428798 A FR 7428798A FR 7428798 A FR7428798 A FR 7428798A FR 2242415 A1 FR2242415 A1 FR 2242415A1
Authority
FR
France
Prior art keywords
reacted
mol
molecular weight
phase
mole
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
FR7428798A
Other languages
French (fr)
Other versions
FR2242415B1 (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.)
Pirelli and C SpA
Original Assignee
Pirelli 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.)
Filing date
Publication date
Application filed by Pirelli SpA filed Critical Pirelli SpA
Publication of FR2242415A1 publication Critical patent/FR2242415A1/fr
Application granted granted Critical
Publication of FR2242415B1 publication Critical patent/FR2242415B1/fr
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
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F1/00—Springs
    • F16F1/36—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers
    • F16F1/3605—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers characterised by their material
    • 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
    • C08G18/08—Processes
    • C08G18/10—Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step
    • 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
    • C08G18/74—Polyisocyanates or polyisothiocyanates cyclic
    • C08G18/76—Polyisocyanates or polyisothiocyanates cyclic aromatic
    • C08G18/7657—Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings
    • C08G18/7678—Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings containing condensed aromatic rings

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Polyurethanes Or Polyureas (AREA)

Abstract

A process for preparing a polyurethane polymer for the construction of deformable elements capable of absorbing shock energy, in particular shock absorbers for rail vehicles, is described. In the process, one mole of a polymeric, hydroxy-terminated linear bifunctional polyol of a molecular weight from 1500 to 2500, preferably 2000, is reacted in the first phase with from 2.20 to 2.50 mol of 1,5-naphthylene diisocyanate and, in the second phase, the compound thus obtained is reacted with from 1 to 1.35 mol of an aliphatic, bi and/or tri-functional glycol of a molecular weight of less than 500, if appropriate containing an aromatic ring in the chain.
FR7428798A 1973-08-31 1974-08-22 Expired FR2242415B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT2840973A IT995244B (en) 1973-08-31 1973-08-31 POLYURETHANE POLYMER FOR THE CONSTRUCTION OF DEFORMABLE ELEMENTS SUITABLE TO ABSORB HIGH IMPACT ENERGY USABLE IN PARTICULAR NEOL SHOCK ABSORBERS FOR RAILWAY VEHICLES

Publications (2)

Publication Number Publication Date
FR2242415A1 true FR2242415A1 (en) 1975-03-28
FR2242415B1 FR2242415B1 (en) 1976-10-22

Family

ID=11223546

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7428798A Expired FR2242415B1 (en) 1973-08-31 1974-08-22

Country Status (4)

Country Link
BE (1) BE819444A (en)
CH (1) CH613984A5 (en)
FR (1) FR2242415B1 (en)
IT (1) IT995244B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0135111A2 (en) * 1983-08-18 1985-03-27 Bayer Ag Thermoplastic polyurethanes having a high thermostability based on naphthylene diisocyanate, process for their preparation and their use

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0135111A2 (en) * 1983-08-18 1985-03-27 Bayer Ag Thermoplastic polyurethanes having a high thermostability based on naphthylene diisocyanate, process for their preparation and their use
EP0135111A3 (en) * 1983-08-18 1986-06-04 Bayer Ag Thermoplastic polyurethanes having a high thermostability based on naphthylene diisocyanate, process for their preparation and their use

Also Published As

Publication number Publication date
FR2242415B1 (en) 1976-10-22
BE819444A (en) 1974-12-31
IT995244B (en) 1975-11-10
CH613984A5 (en) 1979-10-31

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Legal Events

Date Code Title Description
ST Notification of lapse