One-part adhesive and/or sealing mass which is stable and pumpable at temperatures up to 30 degree C.
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United States of America Patent
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Oct 18, 1988
Grant Date -
N/A
app pub date -
Jun 4, 1987
filing date -
Aug 4, 1986
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A one-component adhesive and/or sealing mass which is stable and pumpable at temperatures up to 30.degree. C. contains at least one prepolymer on the basis of a polyurethane, which contains from 0.1 to 15 percent by weight, referred to the prepolymer, of free, reactive isocyanate groups, and at least one with heat activatable hardener. Thereby the stoichiometric ratio between said prepolymer and said hardener is chosen in such a way that only a partial cross-linkage is possible during heating said mass to temperatures from 60.degree. C. to 180.degree. C., and that a product is obtained having from high viscous to plastic characteristics. The inventive masses may be used for bonding and/or sealing of one or more materials of the same or different origin to a composite.
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