Process for homogenizing polyolefin drag reducing agents

Details Process for homogenizing polyolefin drag reducing agents Process for homogenizing polyolefin drag reducing agents

2005-05-17

2005-05-17

Thexton, Matthew A. (Department: 1714)

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

Synthetic resins

Processes of preparing a desired or intentional composition...

C523S309000, C208S370000

Reexamination Certificate

active

06894088

ABSTRACT:
A process for producing polymer drag reducing agent (DRA) slurries without cryogenic temperatures or conventional grinding is described. The homogenizing or size reduction of polymer, such as poly(alpha-olefins), may be achieved by the use of granulated polymer and at least one liquid, non-solvent for the polymer DRA. In one non-limiting embodiment of the invention, the homogenizing is conducted at ambient temperature. Examples of suitable non-solvents include water and non-aqueous non-solvents including, but not necessarily limited to, alcohols, glycols, glycol ethers, ketones, and esters; having from 2-6 carbon atoms, and combinations thereof. The polymeric DRA may be homogenized to an average particle size of about 600 microns or less.

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PCT International Search Report for International Application No. PCT/US2004/007115, Aug. 6, 2004.

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