Polyureaurethane shock absorbing compositions
Abstract
Abstract D R A W I N G A RESILIENT SHOCK ABSORBING POLYURETHANE COMPOSITION AND SHOCK ABSORBING UNITS PREPARED THEREFROM, SUCH AS RAILROAD DRAFT GEARS. THE SHOCK ABSORBING COMPOSITION MAY BE CHARACTERIZED BY DEFLECTING FROM ABOUT 0.3 TO ABOUT 0.6 INCH AT 25*C. UPON THE APPLICATION OF 1800 POUNDS PER SQUARE INCH TO THE END SURFACE OF THE COMPOSITION WHEN IT IS GENERALLY DISC-SHAPED OF REQUIRED DIMENSIONS WITH A V-SHAPED GROOVE SIDEWALL CONNECTING ITS END SURFACES. THE POLYUREAURETHANE COMPOSITION IS PREPARED BY REACTING SPECIFIC DIAMINES WITH THE REACTION PRODUCT OF SPECIFIC AROMATIC DIISOCYANATES WITH A MIXTURE OF SPECIFIC POLYETHER POLYOLS AND POLYESTER POLYOLS OF REQUIRED AMOUNTS AND REQUIRED MOLECULAR WEIGHT RANGES.
Inventors
- 👤 Daniel Augustine Chung
- 👤 Charles John Pearson
Bibliographic Details
Claims Analysis
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