Organic compounds -- part of the class 532-570 series – Organic compounds – Oxygen containing
Patent
1973-06-28
1978-10-03
Evans, Joseph E.
Organic compounds -- part of the class 532-570 series
Organic compounds
Oxygen containing
568861, C07C 2900
Patent
active
041184270
ABSTRACT:
Production of hydroxyl-containing curable liquid hydrocarbon prepolymers by ozonizing a high molecular weight saturated hydrocarbon polymer such as polyisobutylene or ethylene-propylene rubber, followed by reducing the ozonized material; e.g., by using reducing agents, preferably diisobutyl aluminum hydride, to form the above-noted hydroxyl-containing liquid prepolymers having a substantially lower molecular weight than the parent polymer.
The resulting curable liquid hydroxyl-containing prepolymers can be poured into a mold and readily cured; e.g.; with reactants such as toluene diisocyanate, to produce highly stable elastomers having a variety of uses such as binders for solid propellants.
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Gaylord, "Reduction with Complex Metal Hydrides, " (1956), pp. 1017-1022.
Ingham John D.
Rhein Robert A.
California Institute of Technology
Evans Joseph E.
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