Precured coated particulate material

Details Precured coated particulate material Precured coated particulate material

1986-05-23

1987-09-22

Cannon, James C.

Wells

Processes

Specific propping feature

252 8551, 427214, 427221, 428404, 428407, B05D 700, B32B 2714, B32B 2742, E21B 43267

Patent

active

046949054

ABSTRACT:
The present invention relates to coated particulate matter wherein the particles are individually coated with a cured combination of phenolic/furan resin or furan resin to form a precured resin coating on a proppant such as sand, thereby substantially improving the chemical resistance of the proppant over one having a straight phenolic precured coating.
Another embodiment of this invention involves the use of multiple resin coatings on the particulate matter to form a final layered coating containing the desired amount of cured resin. This multiple coating of particulate material results in a final coated product that has a smoother and more uniform surface than particulate material having its entire resin coating applied in a single operation.

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