Coating processes – Solid particles or fibers applied
Patent
1985-12-12
1988-01-19
Beck, Shrive P.
Coating processes
Solid particles or fibers applied
427222, 428407, 428422, B05D 500
Patent
active
047203978
ABSTRACT:
A particulate, free-flowing and rapid dissolving polymer composition is prepared by comminuting a high molecular weight thermoplastic or viscoelastic polymer at a temperature below its glass transition temperature while maintaining the polymer in an inert environment. A finely divided, solid coating agent is mingled with the comminuted polymer while maintaining the polymer particles in a cold and inert atmosphere. The particles of coating agent form a protective shell around each polymer particle by tumble mixing the components while raising the temperature of the mixture. The polymer composition finds use as a drag reducing agent; as an anti-misting agent; to enhance the efficiency of oil skimming processes and devices; and for the preparation of polymer solutions for other uses.
REFERENCES:
patent: 3351601 (1967-11-01), Blaga
patent: 3528841 (1970-09-01), Donaldson
patent: 3632369 (1972-01-01), Hahn
patent: 4066539 (1978-01-01), Hachisu
patent: 4345013 (1982-08-01), Diamond et al.
patent: 4584244 (1986-04-01), Fenton
"What to Expect from and how to Handle Commercially Available Drag-Reducing," Oil & Gas Journal, Mar. 11, 1985, pp. 116-120.
Hadermann Albert F.
O'Mara Dion P.
Trippe Jerry C.
Beck Shrive P.
General Technology Applications, Inc.
Shubert Roland H.
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