Patent Number: 6,310,237

Title: Process for the preparation and uses of derivatives of esters of .alpha.-methylene-.beta.-hydroxy acids

Abstract: A process for the preparation of derivatives of halo-but-2-enoic acids and esters high in 2-ene content, several of which are novel. The esters and their derivatives are useful as promoters for the polymerization of ethylene or the copolymerization of ethylene with .alpha.-olefins and, optionally, nonconjugated polyenes. The promoters can also be combined with transition metal compounds, e.g., vanadium, to form combination promoter-catalyst compounds.

Inventors: Feng; Xu Wu (Bethany, CT), Nudenberg; Walter (Newtown, CT)

Assignee: Uniroyal Chemical Company, Inc.

International Classification: C07C 67/303 (20060101); C07C 67/00 (20060101); C07C 67/307 (20060101); C07C 69/65 (20060101); C07C 69/732 (20060101); C07C 69/00 (20060101); C08F 210/00 (20060101); C08F 210/18 (20060101); C07C 067/30 ()

Expiration Date: 10/30/2018