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US 5,132,355 AGranted
Gels of polyethylene block copolymers and liquid hydrocarbons
OwnerBoris Nahlovskyinventor
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OwnerBoris Nahlovskyinventor
Estimating the term…
Liquid hydrocarbons are gelled by polyethylene block copolymers (PEBC's) to yield storage stable gels and sols that contain no metal-containing gelling agents and which compositions are thermally reversible; i.e., they melt into homogeneous liquids upon heating and upon cooling resume their previous state as a gel or sol. The PEBC gelling agents are block copolymers consisting of quasi-polyethylene crystalline "hard" blocks A and amorphous hydrocarbon "soft" blocks B. Crystallinity of the blocks A imparts the gel or sol with a sharp melting point which is dependent upon the PEBC chemical composition and concentration within the hydrocarbon. The gels and sols may contain suspended solid particles, such as powdered metals, fillers or oxidizers and are pumpable even when these suspended particles are present.
Thermoreversible gels and sols comprising:
The process of producing a thermoreversible gel which comprises dissolving about 0.01 to 50 wt % crystalline hydrocarbon block copolymer gelling agent in at least one hydrocarbon at temperature above the melting point of the gelling agent and forming a gel upon cooling.
The process of preparing an antimisting aircraft fuel which comprises gelling the fuel with a polyethylene block copolymer block copolymer which block copolymer is soluble above its melting point.
Dependencies are inferred from the claim text.