Title:
PROCESS FOR OXIDIZING POLYETHYLENE WAX
Document Type and Number:
Japanese Patent JPH1180252
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To make it possible to inhibit the formation of high-molecular-weight by-products and the formation of deposits inside the reactor by oxidizing a polyethylene wax produced by using a metallocene catalyst with oxygen or an oxygenous gas in a molten state. in the presence of a monobasic or polybasic inorganic acid or carboxylic acid. SOLUTION: The monobasic or polybasic carboxylic acid used is a 1-6C monobasic carboxylic acid or a 2-6C polybasic carboxylic acid. The polyethylene wax suitably used is a homopolymer of ethylene or a copolymer of ethylene with an α-olefin. Desirably, it is a homopolymer of ethylene or a copolymer of ethylene with propene or 1-butene. The reaction temperature is particularly desirably 140-170 deg.C. The pressure is desirably 1-3 bar. Among the inorganic acids, phosphoric acid is desirable, and among the carboxylic acids, a monocarboxylic acid, particularly acetic acid or propionic acid is desirable. The acid is used in an amount of 0.01-1 wt.% based on the wax.
Inventors:
HOHNER GERD
Application Number:
JP19456198A
Publication Date:
March 26, 1999
Filing Date:
July 09, 1998
Export Citation:
Assignee:
CLARIANT GMBH
International Classes:
C08F8/06; C08F10/00; C08F10/02; (IPC1-7): C08F8/06; C08F10/02
Attorney, Agent or Firm:
Mitsufumi Ezaki (3 others)