The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 27, 1994
Filed:
Jun. 17, 1993
BASF Aktiengesellschaft, Ludwigshafen, DE;
Abstract
Copolymers of ethylene with acrylates or acrylic acid are prepared by copolymerizing 100 parts by weight of ethylene with from 1.0 to 20.0 parts by weight of tert-butyl acrylate or tert-butyl methacrylate or acrylic acid or solutions of acrylic acid in acrylates in a continuously operated, tubular polymerization system at above 800 bar and at from 130.degree. to 320.degree. C. in the presence of a free radical polymerization initiator by feeding two gas streams into the polymerization system, by a process in which the first gas stream contains exclusively ethylene with a polymerization initiator and, if required, a polymerization regulator and the second gas stream contains a mixture of ethylene and tert-butyl acrylate or tert-butyl methacrylate or a mixture of ethylene with a solution of acrylic acid in acrylates and polymerization initiators and, if required, polymerization regulators.