The University of Akron

The Goodyear & Tire Rubber Company

Michael F Farona

James F White

Joseph P Kennedy

David A Hutchings

Ramji Srinivasan

A method of cyclization of .alpha.,.omega.-diynes with a transition metal catalyst such as niobium or tantalum salts such as halogen to yield products such as dimers trimers and higher polymers which may have benzo cyclobutene groups, benzocyclopentene groups, benzocyclohexene groups, or none of these, depending on the size of n in the .alpha.,.omega.-diynes of the formula of page 1.

Method of polymerizing .alpha.,.omega.-diynes

Macromonomers of polymer-dicyclopentadiene and polymer-ethylidenenorbornene are prepared and then terpolymerized with ethylene and propylene. The terpolymer exhibits compatibilization of ethylene-propylene rubber and butyl rubber, and thus is useful as a sealant, roofing material, caulking agent, and the like.

Novel EPDM-isobutylene graft copolymers

A method for carrying out reactions of the Friedel-Crafts type, such as alkylation, acylation, polymerization, sulfonylation and dehydrohalogenation. The reactions are catalyzed by arene-metal tricarbonyl complexes and when the reaction vessel contains aromatic substrates the catalyst may be generated in situ from a metallic hexacarbonyl. The arene-metal tricarbonyl catalyst is more selective than conventionally employed Friedel-Craft catalysts in that it yields generally para isomers with little of the ortho variety and very little if any of the meta variety when the aromatic substrate is reacted with organic halide. It is also possible to form the arene-metal tricarbonyl catalyst outside of the reaction vessel and then proceed by adding it to the vessel containing the substrate and the organic halide as is the case with dehydrohalogenation reactions wherein there are no aromatic rings available, the substrate in that instance being aliphatic.

Method for reacting organic halides

A method of activating inactive copper salt catalysts for phenol oxidation by the addition of acid.

Activation of copper salt phenol oxidation catalysts

A method for carrying out reactions of the Friedel-Crafts types, such as alkylation, acylation, polymerization, sulfonylation and dehydrohalogenation. The reactions are catalyzed by arene-metal tricarbonyl complexes and when the reaction vessel contains aromatic substrates the catalyst may be generated in situ from a metallic hexacarbonyl. The arene-metal tricarbonyl catalyst is more selective than conventionally employed Friedel-Craft catalysts in that it yields generally para isomers with little of the ortho variety and very little if any of the meta variety when the aromatic substrate is reacted with organic halide. It is also possible to form the arene-metal tricarbonyl catalyst outside of the reaction vessel and then proceed by adding it to the vessel containing the substrate and the organic halide as is the case with dehydrohalogenation reactions wherein there are no aromatic rings available, the substrate in that instance being aliphatic.

Growing community of inventors

Cuyahoga Falls, OH, United States of America

Michael F Farona