Crosslinkable rubber composition

Details Crosslinkable rubber composition Crosslinkable rubber composition

1990-03-26

1991-08-27

Michl, Paul R.

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

548530, C07D20700

Patent

active

050434551

ABSTRACT:
It is sometimes desirable to cure rubber compositions utilizing non-sulfur curing agents. The subject invention reveals rubber compositions which can be cured without utilizing sulfur or sulfur containing compounds. The subject invention more specifically discloses a rubber composition which can be crosslinked by heating which is comprised of (1) at least one rubber having pendant blocked isocyanate groups bound thereto; and (2) at least one compound which contains at least 2 Zerewitinoff active hydrogens.
This invention also discloses crosslinking of elastomer compounds containing (1) at least one rubber having functionalized groups containing at least one Zerewitinoff active hydrogen and (2) at least one compound which contains at least two blocked isocyanate groups. This invention also discloses self-curing elastomers containing both blocked isocyanate groups and groups containing at least one active Zerewitinoff hydrogen.

REFERENCES:
patent: 2882260 (1959-04-01), Bartl et al.
patent: 3694416 (1972-09-01), Rubens et al.
patent: 3926875 (1975-12-01), Tsuyukuni et al.
patent: 4008247 (1977-02-01), Tucker
Database Chemical Abstraccts, (HOST:STN), 1980, Ref. No. 93(8): 73476q, Columbus, Ohio.

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