NO128539B

• Main Authors: REED D,US, SCHALLENBERG E,US, SWEENEY W,US
• Format: Patent
• Language: English
• Published: 03.12.1973
• Subjects: CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; FUELS; INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATINGCOMPOSITIONS; LUBRICANTS; LUBRICATING COMPOSITIONS; MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; PEAT; PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; THEIR PREPARATION OR CHEMICAL WORKING-UP; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATINGINGREDIENTS IN A LUBRICATING COMPOSITION

1,244,220. Amorphous polymer. TEXACO DEVELOPMENT CORP. 10 Sept., 1968 [28 Sept., 1967], No. 42976/68. Heading C3P. A composition consists of an ethylene-propylene copolymer having an amorphous structure, a number average molecular weight of 10,000 to 40,000 a propylene content of 20 to 70 mole per cent and a #M w /#M n of less than 5. The copolymers may be prepared by saturating an inert solvent with ethylene, propylene and hydrogen, and contacting this feed with a solvent soluble Ziegler-Wutla catalyst, preferably a two component catalyst system such as a mixture of tri-n-butyl orthovanadate and ethyl aluminium dichloride, diethyl aluminium chloride or ethylaluminium sesquichloride. In the examples, carbon tetrachloride or cyclohexane are saturated with ethylene, propylene and hydrogen, and contacted with heptane solutions of diethyl aluminium chloride and tri-n-butylvanadate. The polymer solution is washed with hydrochloric acid and stripped of solvent.