Patent ID: 6815571
Filing Date: 2004-11-09
Classification: A61K,A61Q,C08F,C08K,Y10S

Abstract:
A process for preparing a polyethylene wax, comprising:dissolving one or more free-radical initiators in one or more ketones of the formula I, thereby obtaining a solution; andcompressing the solution, to obtain a compressed solution; metering said compressed solution into a polymerization reactor at one or more points; and subsequently polymerizing ethylene, thereby obtaining a polyethylene wax having a molecular weight Mw of not more than 40,000 g/mol; wherein in formula I, R1 and R2 are identical or different and are C1-C6-alkyl, C3-C12-cycloalkyl or R1 and R2 are covalently linked to one another to form a 4- to 13-membered ring, prior to the polymerization; wherein said process proceeds at a temperature of from 140 to 350Â° C. and a pressure of from 400 to 4500 bar.