Patent ID: 6441259
Filing Date: 2002-08-27
Classification: C07C

Abstract:
A method of continuously preparing tetracyclododecenes comprising(a) feeding continuously: (1) an olefin, (2) crude cyclopentadiene, crude dicyclopentadiene, or a mixture thereof and (3) norbornenes into a heated reactor, (b) circulating back to said reactor at least a part of norbornenes and cyclopentadiene, distilled out of said reactor, and (c) maintaining the amounts of one, two, or three compounds selected from the group consisting of, isoprene, piperylene, and 1-methyl-2-norbornenes, such that Isoprene is in the range of 1-10,000 ppm Piperylene is in the range of 1-10,000 ppm and 1-Methyl-2-norbornenes is in the range of 1-70,000 ppm said compounds being compared on a weight basis to the sum of cyclopentadiene and dicyclopentadiene present in the raw materials introduced into the reactor; wherein said olefin is said norbornene is said tetracyclododecene is and said 1-methyl-2-norbornene is where R1 and R2 are identical or different functional groups, and are selected from the group consisting of a hydrogen atom, a methyl group, and an ethyl group.