Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Polymers from only ethylenic monomers or processes of...
Patent
1991-06-17
1992-12-22
Michl, Paul R.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Polymers from only ethylenic monomers or processes of...
526312, 548537, 548530, C08F 806
Patent
active
051735571
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.
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patent: 3926875 (1975-12-01), Tsugukuni et al.
patent: 4008247 (1977-02-01), Tucker
patent: 4604439 (1986-08-01), Colvin et al.
patent: 4816537 (1989-03-01), Tsuboniwa et al.
Data Base Chemical Abstracts (HOST:STN) 1980.
Colvin Howard A.
Parker Dane K.
Weinstein Arthur H.
Asinovsky Olga
Michl Paul R.
Rockhill Alvin T.
The Goodyear Tire & Rubber Company
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