Eilert A Ofstead

42398746, Dec 16, 1980

Feb 21, 1979

6/012990

Eilert A. Ofstead - Cuyahoga Falls OH
Michael L. Senyek - Tallmadge OH

The Goodyear Tire & Rubber Company - Akron OH

C08F 462
C08F23200

526143

There is disclosed a process for the preparation of gel-free rubbery copolymers of cyclopentene and dicyclopentadiene by means of a catalyst system comprising (A) a soluble tungsten halide or oxyhalide, (B) an organoaluminum compound, (C) an alcohol and (D) a polyhalogenated phenol.

41729323, Oct 30, 1979

Sep 7, 1977

5/831200

Eilert A. Ofstead - Cuyahoga Falls OH
Ken W. Donbar - Akron OH

The Goodyear Tire & Rubber Company - Akron OH

C08F 452
C08F 3204

526142

There is disclosed a process for the preparation of polymers of cyclopentene or copolymers of cyclopentene with non-conjugated unsaturated alicyclic compounds containing at least 7 carbon atoms in the ring and at least one double bond in the ring or polycyclic olefins or non-conjugated diolefins by the use of the catalyst system comprising (a) tungsten halides or oxyhalides, (b) an organoaluminum compound, (c) an alcohol, and (d) a halogenated phenol.

50532464, Oct 1, 1991

Mar 30, 1990

7/501564

Derek Shuttleworth - Munroe Falls OH
Syed K. Mowdood - Madison CT
Walter H. Waddell - Fairlawn OH
Jimmy L. Richards - Cuyahoga Falls OH
Eilert A. Ofstead - Cuyahoga Falls OH
Jerry L. Brenner - Copley OH

The Goodyear Tire & Rubber Company - Akron OH

B05D 306
B05D 136
B05D 700

427 40

This invention is directed to treating the surfaces of rubber-reinforcing materials with a gas plasma of O. sub. 2 and CF. sub. 4 to activate the surfaces to make them more receptive to adhesives. Optionally the surfaces of the reinforcing materials may be exposed to a polymerizing gas plasma such as a thio-carbon to coat the surfaces of the reinforcing material with substances that promote adhesion to rubber. The treated surfaces have been shown to adhere directly to rubber when vulcanized in the normal fashion.

41316290, Dec 26, 1978

Nov 11, 1977

5/850580

Lawson G. Wideman - Akron OH
Eilert A. Ofstead - Cuyahoga Falls OH

The Goodyear Tire & Rubber Company - Akron OH

C07C 502

260666A

There is disclosed a process for the preparation of cyclopentene which comprises selectively hydrogenating cyclopentadiene in the liquid phase by contacting cyclopentadiene with hydrogen in the presence of a hydrogenation catalyst comprising a highly dispersed form of nickel in which water is employed in the reaction medium.

39974715, Dec 14, 1976

Aug 4, 1975

5/601698

Eilert A. Ofstead - Cuyahoga Falls OH

The Goodyear Tire & Rubber Company - Akron OH

B01J 3102

252429B

There is disclosed a new process for ring-opening polymerization of cycloolefins by the use of a catalyst comprising (A) tungsten or molybdenum halides, (B) alkyl aluminum halides and (C) an alcohol which may optionally contain a halogen substituent and (D) an alcohol which has a nitrile substituent. Also the catalyst is disclosed as useful in metathesis of olefins.

41373901, Jan 30, 1979

Sep 7, 1977

5/831201

Eilert A. Ofstead - Cuyahoga Falls OH

The Goodyear Tire & Rubber Company - Akron OH

C08F 478
C08F 3204

526143

There is disclosed a cycloolefin metathesis process comprising polymerizing (1) an unsaturated alicyclic compound containing 5 carbons and one double bond in the ring and (2) polycyclic non-conjugated diolefins by the use of a catalyst system comprising (a) tungsten halides and oxyhalides, (b) at least one compound such as alkylaluminum sesquihalides, dialkylaluminum halides, alkylaluminum diahlides or trialkylaluminums, (c) an alcohol, and (d) pentachlorophenol or pentabromophenol.

40101134, Mar 1, 1977

Nov 17, 1975

5/632553

Eilert A. Ofstead - Cuyahoga Falls OH

The Goodyear Tire & Rubber Company - Akron OH

B01J 3102

252429B

There is disclosed a new process for ring-opening polymerization of cycloolefins by the use of a catalyst comprising (A) tungsten or molybdenum halides, (B) alkyl aluminum halides and (C) an alcohol which has a nitrile substituent. Also the catalyst is disclosed as useful in metathesis of olefins.

60137207, Jan 11, 2000

Jul 25, 1997

8/900891

Anthony Joseph Bell - Stow OH
Eilert Aloysius Ofstead - Cuyahoga Falls OH
Ronald Lee Holsapple - Uniontown OH

The Goodyear Tire & Rubber Company - Akron OH

C08J 300
C08K 320
C08L 5100
B32B 2708

524543

This invention discloses an aqueous slurry for coating the surface of rubber slabs or pellets to reduce the tendency of the rubber slabs or pellets to stick together, said aqueous slurry being comprised of (1) from about 1 weight percent to about 15 weight percent of syndiotactic-1,2-polybutadiene having a melting point of no more than about 140. degree. C. and a particle size of no more than about 40 mesh; (2) from about 0. 1 weight percent to about 5 weight percent of a suspending agent; (3) from about 0. 05 weight percent to about 2 weight percent of a wetting agent; and (4) from about 78 weight percent to about 98 weight percent water. The present invention further reveals a coated rubber slab having resistance to sticking which is comprised of a rubber slab having a coating thereon, wherein said coating is comprised of syndiotactic-1,2-polybutadiene having a melting point of no more than about 140. degree. C. and a particle size of no more than about 40 mesh.