Urethane elastomer for printing belts and process therefor
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United States of America Patent
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-
Sep 13, 1983
Grant Date -
N/A
app pub date -
Aug 20, 1981
filing date -
Aug 20, 1981
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A process for making an elastomer for use in printing/drive belts is disclosed wherein a mixture of approximately 2 equivalents of toluene diisocyanate consisting of about 88 wt. % of the 2,4 isomer and 12 wt. % of the 2,6 isomer is reacted with a polyether or polyester having difunctional primary hydroxyl groups to form a prepolymer. The prepolymer is then reacted with a diamine curing agent to form the elastomer.
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Cited Art Landscape
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