Energy absorbing polyurethane compositions

Details Energy absorbing polyurethane compositions Energy absorbing polyurethane compositions

1983-03-30

1984-10-09

Welsh, Maurice J.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Processes of preparing a desired or intentional composition...

4284231, 4284259, 523214, 523218, 523219, 524710, 524711, 524773, 524775, 524779, 524780, 524781, 524783, 524785, 524847, 528 76, 528 77, 528 85, C08L 7508, C08G 1838

Patent

active

044762585

ABSTRACT:
Energy absorbing polyurethane elastomer compositions having a density of from about 0.4 to about 1 gm/cc, a compression set of less than about 5% and a recovery time of from about 10 to about 100 milliseconds containing a light-weight filler are formed by reaction of a urethane-forming component comprising a compound containing at least four urethane-forming reactive sites and capable of forming stable complexes through unsatisfied urethane-forming reactive sites, an elasticizing polyol selected from the group consisting of diols and triols, and a diisocyanate in less than stoichiometric amounts.

REFERENCES:
patent: 3248371 (1966-04-01), Damusis
patent: 4281096 (1981-07-01), Nomura et al.
patent: 4346205 (1982-08-01), Hiles

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