Gels of polyethylene block copolymers and liquid hydrocarbons

Details Gels of polyethylene block copolymers and liquid hydrocarbons Gels of polyethylene block copolymers and liquid hydrocarbons

1990-11-26

1992-07-21

Michl, Paul R.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

524488, 525321, 525323, C08J 300, C08K 501, C08L 9108

Patent

active

051323559

ABSTRACT:
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.

REFERENCES:
patent: 4709982 (1987-12-01), Corne et al.

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