Polymerization process for drag reducing substances
Abstract
Abstract A method is provided for the production of ultrahigh molecular weight drag reducing substances and the like comprising: (a) preparing under an inert atmosphere a catalyst comprising: (1) titanium halide of the general formula TiX m wherein m=2.5 to 4.0; (2) a co-catalyst such as an organo-aluminum halide of the formula AlR n X 3-n where r is a hydrocarbon radical, X is a halogen and n is 2 or 3; (3) a phosphorous compound of the formula PR 1 R 2 R 3 or P(OR 1 )(OR 2 )(OR 3 ) where R 1 , R 2 , and R 3 are, independently, aryl, alkyl, aralkyl, or alkaryl, containing from 1 to 12 carbon atoms and placing the catalyst in contact with; (b) alpha-monoolefinic hydrocarbons from C 2 -C 30 under suitable temperature conditions to provide a hydrocarbon soluble ultrahigh molecular weight polymer, then ceasing polymerization at a polymer content level of 20% by weight or less, based on the total reaction mixture.
Inventors
- 👤 Mark P. Mack
Bibliographic Details
Claims Analysis
Total Claims: 4References Cited (Backward Citations)
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