Ronald E Gilbert

US Patent:

47819588, Nov 1, 1988

Filed:

Sep 21, 1987

Appl. No.:

7/098715

Inventors:

Ronald E. Gilbert - Katy TX

Assignee:

Reef Industries, Inc. - Houston TX

International Classification:

B32B 104
B32B 302
B32B 1508

US Classification:

428 76

Abstract:

A detectable tape including a ductile metal foil layer which is enclosed in a sheath of thermoplastic coating which provides a sealed edge along the length of the tape. The thermoplastic coating sheath protects the foil from corrosion when the detectable tape is placed underground above a nonmetallic body such as plastic pipe. The sealed edge detectable tape can also include a reinforcement layer which provides additional tensile strength.

US Patent:

46998381, Oct 13, 1987

Filed:

Mar 18, 1986

Appl. No.:

6/841443

Inventors:

Ronald E. Gilbert - Katy TX

Assignee:

Reef Industries, Inc. - Houston TX

International Classification:

B32B 316
B32B 1508
C09J 702

US Classification:

428201

Abstract:

A reinforced metallic and polymer tape which has a light reflecting metallic layer and can have a color coating. The reinforcing material is usually a nonwoven clear resin through which the color is clearly visible. The combination of the metallic layer and reinforcing layer produces a high tensile strength, tear resistant tape. The combination also produces a tape that does not have the tendency to curl.

US Patent:

42513898, Feb 17, 1981

Filed:

Jan 14, 1980

Appl. No.:

6/112026

Inventors:

Ronald E. Gilbert - Katy TX
Rajindar K. Kochhar - Katy TX

Assignee:

Gulf Oil Corporation - Pittsburgh PA

International Classification:

C08F 464

US Classification:

252429B

Abstract:

Titanium chloride catalysts having improved activity to polymerize propylene are prepared by treating TiCl. sub. 4 with an aluminum alkyl and treating the resulting titanium chloride catalysts with carbon dioxide and a Lewis base such as di(n-butyl) ether at an elevated temperature.

US Patent:

43306527, May 18, 1982

Filed:

Jul 10, 1980

Appl. No.:

6/168835

Inventors:

Ronald E. Gilbert - Katy TX
Rajindar K. Kochhar - Katy TX

Assignee:

Gulf Oil Corporation - Pittsburgh PA

International Classification:

C08F 464
C08F 1006

US Classification:

526138

Abstract:

Propylene is polymerized with an improved titanium chloride catalyst. The improved titanium chloride catalyst is prepared by treating TiCl. sub. 4 with an aluminum alkyl and treating the resulting titanium chloride catalyst with carbon dioxide and a Lewis base, such as di(n-butyl) ether in a hydrocarbon medium at an elevated temperature.

US Patent:

41698266, Oct 2, 1979

Filed:

Jun 12, 1978

Appl. No.:

5/914306

Inventors:

Ronald E. Gilbert - Katy TX
Thomas J. Lynch - Houston TX
Robert J. Rowatt - Orange TX

Assignee:

Gulf Oil Corporation - Pittsburgh PA

International Classification:

C08K 501

US Classification:

260 336PQ

Abstract:

An improved process is provided for incorporating finely-divided inorganic additives such as diatomaceous earth into thermoplastic polymers. The desired additive(s) are dispersed in a normally liquid hydrocarbon to form a Bingham fluid composition. These Bingham fluid compositions, while solid at ambient temperature and pressure, will flow under an applied pressure and can be pumped to feed the additive to a molten polymer. When this mixture is passed through a mixing apparatus such as an extruder, the additive is uniformly dispersed throughout the polymer. The process is particularly well suited to incorporate such additives into a molten ethylene polymer either as, or immediately after, the molten ethylene polymer is discharged from the reaction zone in which the polymer is prepared.

US Patent:

41743300, Nov 13, 1979

Filed:

May 19, 1978

Appl. No.:

5/907531

Inventors:

Ronald E. Gilbert - Katy TX
Thomas J. Lynch - Houston TX
Robert J. Rowatt - Orange TX

Assignee:

Gulf Oil Corporation - Pittsburgh PA

International Classification:

C08L 9100

US Classification:

260 285A

Abstract:

An improved process is provided for incorporating additives into thermoplastic polymers. The desired additive(s) are dispersed in a continuous solid phase which is a mixture of a wax and a normally liquid hydrocarbon to form a Bingham fluid composition. These Bingham fluid compositions, while solid at ambient temperature and pressure, will flow under an applied pressure and can be pumped to feed the additive to a molten polymer. When this mixture is passed through a mixing apparatus such as an extruder, the additive is uniformly dispersed throughout the polymer. The process is particularly well suited to incorporate additives into a molten ethylene polymer either as, or immediately after, the molten ethylene polymer is discharged from the reaction zone in which the polymer is prepared.

US Patent:

41736974, Nov 6, 1979

Filed:

May 19, 1978

Appl. No.:

5/907517

Inventors:

Ronald E. Gilbert - Katy TX
Thomas J. Lynch - Houston TX
Robert J. Rowatt - Orange TX

Assignee:

Gulf Oil Corporation - Pittsbrugh PA

International Classification:

C08F 428
C08F 1002

US Classification:

526 74

Abstract:

A process is provided for the continuous high-pressure mass polymerization of ethylene in which novel means are employed to continuously introduce the free radical generating polymerization initiator into the polymerization zone. The process is carried out by pumping into the polymerization a Bingham fluid which has a free-radical generating polymerization initiator uniformly dispersed throughout a solid continuous phase, which is a mixture of a wax and a liquid hydrocarbon.

US Patent:

40815870, Mar 28, 1978

Filed:

May 16, 1977

Appl. No.:

5/797649

Inventors:

Bert H. Clampitt - Katy TX
Ronald E. Gilbert - Katy TX

Assignee:

Gulf Oil Corporation - Pittsburgh PA

International Classification:

C08F 814
C08F 850

US Classification:

526 54

Abstract:

A process is provided for preparing a copolymer of ethylene and acrylic or methacrylic acid. Typically, a copolymer of ethylene and methyl acrylate is dissolved in a diarylalkane such as 1,1-dixylylethane. A transesterification catalyst and either isopropanol or tertiary butanol is added to the polymer solution which then is heated to reflux to convert the polymerized methyl acrylate moiety to the isopropyl or tertiary butyl acrylate moiety. Following completion of the transesterification reaction, any excess isopropanol or tertiary butanol is removed from the reaction system by distillation. The polymer solution then is heated to a temperature of the order of 320. degree. C to thermally crack the isopropyl or tertiary butyl acrylate and form the corresponding ethylene-acrylic acid copolymer. The ethylene-acrylic acid copolymer is insoluble in the diarylalkane and can be recovered by filtration.