Vibration isolator

Details Vibration isolator Vibration isolator

F - Mech Eng,Light,Heat,Weapons

16

F

403/14, 403/41

F16F 1/37 (2006.01) C08G 18/10 (2006.01) C08G 18/40 (2006.01) C08G 18/65 (2006.01) C08G 18/69 (2006.01)

Patent

CA 1247298

Title of the Invention VIBRATION ISOLATOR Abstract of the Disclosure A vibration isolator composed of a low foam urethane elastomer having urethane bonds and a bulk density of 0.4-0.75 g/cm3 which is prepared from the starting foamable liquid of urethane elastomer composed substantially of (a) a polyether polyol having an average number of functional groups of 2.5-4.5 and a number average molecular weight of 2000-8500, (b) a vinyl monomer-grafted polyol having an average number of functional groups of 2.5-4.0 and the graft ratio is 4-20% by weight, (c) a liquid polybutadiene polyol having hydroxyl terminal group(s), an average number of functional groups of 2.0-3.0 and a number average molecular weight of 2000-7000, (d) an organic polyisocyanate, (e) a chain extender (f) a blowing agent, and (g) a urethanation catalyst, in such ratios that the NCO index is within the range of 90-110, and the concentration of the chain extender, based on the total amount of the five components of (a), (b), (c), (d) and (e), is 0.3 X 10-3 to 1.5 X 10-3 mol/g.

483287

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