Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From reactant having at least one -n=c=x group as well as...
Patent
1977-02-10
1978-08-01
Cockeram, H.S.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From reactant having at least one -n=c=x group as well as...
260 32N, 528 75, C08G 1862, C08G 1882
Patent
active
041042654
ABSTRACT:
Vulcanized elastomers derived from functional liquid diene prepolymers which have properties which make them satisfactory for use as the principal component of mixes serving for the manufacture of pneumatic tires can be prepared by a process which comprises, in general, forming a vulcanizable mix of a functional liquid diene prepolymer having reactive mobile hydrogen functions and having a degree of functionality of between 1.8 and 2.0 and a hydrocarbon chain lengthening bifunctional compound having reactive isocyanate groups in a certain ratio, and conducting chain lengthening and vulcanizing operations in two separate sequential heating stages.
REFERENCES:
patent: 3175997 (1965-03-01), Hsieh
patent: 3427366 (1969-02-01), Verdol et al.
patent: 3629172 (1971-12-01), Jones
patent: 3714110 (1973-01-01), Verdol et al.
patent: 3980606 (1976-09-01), Werner
Hofmann, Vulcanization and Vulcanizing Agents, Palmerton, New York, 1967, pp. 143-159, 316-326.
DOS 2,205,209-- Bayer -- Jan. 1974.
DOS 2,233,359 -- Phoenix -- Aug. 1973.
Cockeram H.S.
Compagnie Generale Des Etablissements Michelin
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