Terrence C Huff

US Patent:

55041710, Apr 2, 1996

Filed:

Dec 22, 1994

Appl. No.:

8/363206

Inventors:

Bradley P. Etherton - Houston TX
James J. McAlpin - Houston TX
Terrence Huff - Baytown TX
Edward N. Kresge - Watchung NJ

Assignee:

Exxon Chemical Patent Inc. - Wilmington DE

International Classification:

C08F23620
C08F 202

US Classification:

526336

Abstract:

Disclosed are unsaturated. alpha. -olefin/. alpha. ,. omega. -diene copolymers, and a method of preparation thereof. The copolymers are generally crystalline, free of gel and cross-links, and contain unsaturated side chains and long chain branching. The copolymers contain up to 5 mole percent diene incorporated therein, and may be prepared by copolymerization using a solid-phase, insoluble coordination catalyst, without a solvent, and below the crystalline melting point of the copolymer.

US Patent:

44789513, Oct 23, 1984

Filed:

Jan 3, 1983

Appl. No.:

6/455168

Inventors:

Terrence Huff - Baytown TX

Assignee:

Exxon Research & Engineering Co. - Florham Park NJ

International Classification:

C08F 464

US Classification:

502108

Abstract:

Extremely strong, i. e. , non-friable TiCl. sub. 3 Ziegler-type polymerization catalyst are obtained by prepolymerizing a reduced solid TiCl. sub. 3 product with a mixture of propylene and linear C. sub. 8 -C. sub. 18 alpha-olefin to produce a reduced solid TiCl. sub. 3 product containing 5 to 35 weight percent of a copolymer of propylene and C. sub. 8 -C. sub. 18 alpha-olefin having a ratio of the infrared spectrum of the copolymer at 720 cm. sup. -1 : the infrared spectrum of the copolymer at 975 cm. sup. -1 in the range of 0. 04 to 0. 20.

US Patent:

55147615, May 7, 1996

Filed:

Feb 10, 1995

Appl. No.:

8/386395

Inventors:

Bradley P. Etherton - Houston TX
James J. McAlpin - Houston TX
Terrence Huff - Baytown TX
Edward N. Kresge - Watchung NJ

Assignee:

Exxon Chemical Patents Inc. - Wilmington DE

International Classification:

C08F23620
C08F29708

US Classification:

526144

Abstract:

Disclosed are unsaturated. alpha. -olefin/. alpha. ,. omega. -diene copolymers, and a method of preparation thereof. The copolymers are generally crystalline, free of gel and cross-links, and contain unsaturated side chains and long chain branching. The copolymers contain up to 5 mole percent diene incorporated therein, and may be prepared by copolymerization using a solid-phase, insoluble coordination catalyst, without a solvent, and below the crystalline melting point of the copolymer.

US Patent:

40269680, May 31, 1977

Filed:

Apr 5, 1976

Appl. No.:

5/673453

Inventors:

Burnett H. Johnson - Baytown TX
Terrence Huff - Baytown TX

Assignee:

Exxon Research and Engineering Company - Linden NJ

International Classification:

C08F25510

US Classification:

260879

Abstract:

Novel high impact plastics are prepared by the inclusion of 2 to 30 weight percent of bromobutyl rubber in polymers of styrene and styrene-acrylonitrile and the grafting of said polymers onto said rubber. The graft copolymers are obtained by polymerizing the monomers of styrene or styrene-acrylonitrile in the presence of the bromobutyl rubber, which is preferably precrosslinked.

US Patent:

57475920, May 5, 1998

Filed:

Dec 16, 1994

Appl. No.:

8/357635

Inventors:

Terrence Huff - Baytown TX
James John McAlpin - Houston TX

Assignee:

Exxon Chemical Patents, Inc. - Houston TX

International Classification:

C08L 900

US Classification:

525191

Abstract:

A thermoplastic polymer composition incorporating at least about 50 wt % polypropylene, at least about 20 wt % of an elastomer such as EP rubber and at least about 4 wt % plastomer. The plastomer is preferably a single site catalyzed ethylene based copolymer having a density less than about 0. 915. By adjusting the amount of the plastomer in the composition, considerable control is secured over post-mold shrinkage of components produced through injection molding operations utilizing the composition. The composition can be prepared as a reactor blend or a melt blend. The composition is particularly useful in producing large components such as bumpers and exterior trim fascia for automobiles.

US Patent:

45254672, Jun 25, 1985

Filed:

Jan 16, 1984

Appl. No.:

6/571052

Inventors:

Terrence Huff - Baytown TX
Eugene E. Poirot - Baytown TX

Assignee:

Exxon Research & Engineering Co. - Florham Park NJ

International Classification:

C08F 464

US Classification:

502121

Abstract:

A aliphatic hydrocarbon soluble mixed aluminum hydrocarbyl-Lewis base co-catalyst composition comprising (i) at least two different classes of aluminum hydrocarbyls the first being an aluminum hydrocarbyl halide, the second being an aluminum hydrocarbyl hydride and/or aluminum trialkyl and (ii) at least one Lewis base represented by the formula: ##STR1## wherein each Y can be -OR', -NR. sub. 2 ' and R' with the proviso that at least two be -OR' or -NR. sub. 2 ', Z is an alkylene radical forming a 5 or 6 membered ring with the carbonyldioxy group or Z is alkyl substituted alkylene group wherein the alkyl radical can have from 1 to 8 carbon atoms, R is an aryl, allyl or alkyl group having 1 to 20 carbon atoms and R' is an alkyl, cycloalkyl, aryl or aralkyl radical having from 1 to 20 carbon atoms. The co-catalyst is employed with a titanium halide catalyst for the polymerization of olefins to obtain a advantageous balance of catalytic activity and polymer product stereoregularity.

US Patent:

40874850, May 2, 1978

Filed:

Aug 16, 1976

Appl. No.:

5/714372

Inventors:

Terrence Huff - Baytown TX

Assignee:

Exxon Research & Engineering Co. - Linden NJ

International Classification:

C08L 2316

US Classification:

260897A

Abstract:

An impact polypropylene blend having an excellent balance of overall mechanical properties, particularly high impact strength, and significantly improved optical properties, comprising about 2 to about 22% by weight of an ethylene-propylene copolymer elastomer and about 1 to about 15% by weight of a low density polyethylene which are at least partially cured in the presence of polypropylene. The high impact polypropylene blends containing about 70 to about 95% by weight polypropylene have surprisingly good optical properties and are useful for making molded or extruded high clarity articles, such as containers, films, and the like.

US Patent:

42218829, Sep 9, 1980

Filed:

Jan 31, 1979

Appl. No.:

6/007861

Inventors:

Terrence Huff - Baytown TX

Assignee:

Exxon Research & Engineering Co. - Florham Park NJ

International Classification:

C08L 2312
C08L 2306
C08L 2316

US Classification:

525240

Abstract:

Melt mixed, melt-flowable blends of polypropylene, at least about 30% polyethylene and from about 4 to about 11% ethylene-propylene copolymer rubber, and method for making same, are disclosed. Such blends possess higher low temperature Izod and Gardner impact strength than conventional impact polypropylene blends, while having a comparable or higher flexural modulus.