Exxon Chemical Patents, Inc.

Exxonmobil Chemical Patents Inc.

Exxon Research and Engineering Company

Grant Prideco, Inc.

Tuboscope Vetco (france) Sas

Henry W Yang

David John Lohse

Gary F Licciardi

Thomas J Pacansky

Wen Li

Jo Ann Canich

Bryan Robert Chapman

Sandra Denise Schregenberger

Bruce R Lundmark

Scott Granger

Jonathan Franchi

Chris McKlemurry

Kenneth Godeke

Jan Bock

Anthony Nicholas Speca

Howard W Turner

Paul L Valint

Palanisamy Arjunan

Avinash Chandrakant Gadkari

Chon-Yie Lin

Vijay Swarup

Manika Varma-Nair

Gregory G Hlatky

Yu Feng Wang

Bruce Allan Harrington

Anthony Poloso

Michael Brian Kelly

Oliver Wendell Smith

Thomas H Henry

Peter S Ellis

Wai Yan Chow

A landing pipe includes a first tool joint, a second tool joint, and a main section extending from the first tool joint to the second tool joint, the main section having a first portion and a second portion. The first tool joint outer diameter is greater than both the main section first portion outer diameter and the main section second portion outer diameter. The main section third portion wall thickness is greater than the main section second portion wall thickness, and the main section second portion has a length range of 40% to 85% of an overall length of the landing pipe.

Landing pipe

A landing pipe includes a first tool joint, a second tool joint, and a main section extending from the first tool joint to the second tool joint, the main section having a first portion and a second portion. The first tool joint outer diameter is greater than both the main section first portion outer diameter and the main section second portion outer diameter. The main section first portion wall thickness is greater than the main section second portion wall thickness, and the main section second portion has a length range of 40% to 85% of an overall length of the landing pipe.

The present invention relates to articles made from plasticized polyolefin compositions comprising a polyolefin and a non-functionalized hydrocarbon plasticizer.

Articles from plasticized polyolefin compositions

The present invention relates to a composition comprising more than 25 weight % (based on the weight of the composition) of one or more ethylene polymers having an Mof 20,000 g/mole or more and at least 0.1 weight % of a liquid hydrocarbon modifier where the modifier has:

Modified polyethylene compositions

The present invention relates generally to compositions prepared by polymerizing vinyl neo C -C carboxylic acid esters. Such compositions include latex compositions that are formed by polymerizing vinyl neo C -C carboxylic acid esters with ethylenically unsaturated comonomers such as acrylic acid esters and vinyl acetate. The polymer compositions of the present invention are particularly suitable for use in applications such as architectural (both interior and exterior), direct-to-metal and marine coatings and transportation maintenance applications.

Polymer compositions derived from vinyl neo C9-C13 carboxylic acid esters

The present invention is based on the discovery that diblock copolymers of ethylene and an atactic alpha-olefin that are prepared in the presence of a catalyst system comprising at least one metallocene compound and a non-coordinating anion are especially useful as compatibilizers with blends of polyethylene and isotactic poly-alpha-olefin homopolymers.

Polyolefin blends compatibilized with a diblock copolymer

This invention is for LLDPE blends with an ethylene-norbornene copolymer for resins and improved toughness and processibility for film production. This invention provides LLDPE based resins which are significantly improved with respect to their capability to be fabricated into a film layer, particularly by a blown bubble extrusion technique. Films prepared of the LLDPE/E-NB melt blended resins of this invention are significantly improved with respect to certain of their film properties, such as tear strength, without detracting from the beneficial properties that a LLDPE otherwise provides to a film.

LLDPE blends with an ethylene-norbornene copolymer for resins of

This invention relates to catalyst supports made by spray drying an emulsion polymerized latex and the novel supported catalysts utilizing these supports. This invention further relates to a method for forming supported catalysts by spray drying a latex of microparticles containing catalyst or catalyst components. The polymizerable monomers used in the latex are e.g. styrenes, vinyl benzenes, vinyl cyclohexane and vinyl cyclohexene and can form homo- or copolymers which may be crosslinked. The catalysts supported include metallocenes as well as Ziegler-Natta catalysts. Processes of polymerizing olefins using such catalysts are also described.

Spray dried polymer for catalyst support

This invention relates to polypropylene blends, particularly blends of high molecular weight amorphous polypropylene with low molecular weight isotactic polypropylene. These blends exhibit unusual elastomeric properties.

Thermoplastic elastomers

This invention relates to polypropylene blends, particularly blends of high molecular weight amorphous polypropylene with lower molecular weight isotactic polypropylene. These blends exhibit unusual elastomeric properties.

Process to produce thermoplastic elastomers

A process for the production of block copolymers of ethylene and an .alpha.-olefin such as propylene by using an ionic catalyst system including a metallocene component and a component having a cation capable of donating a proton and a compatible non-coordinating anion. Novel block copolymers are produced.

Block copolymers from ionic catalysts

This invention provides a process for preparing novel hydrophobically associating polymers containing cationic functionality which are useful for clean-up of waste waters containing organic contaminants. These water soluble polymers contain both water soluble and water insoluble monomers. The water soluble monomers are acrylamide (AM) and a salt of an unsaturated amine base (C), and the water insoluble monomer is a higher alkyl(meth)acrylamide or alkyl(meth)acrylate (R). These polymers are referred to as CRAM. The process relies on the dissolution of the water insoluble monomer(s) into an aqueous solution of water soluble monomers by means of a water miscible mutual cosolvent. The type and concentration of miscible solvents are chosen to produce a clear, uniform, homogeneous aqueous solution of the hydrophobic monomers in the presence of both nonionic and cationic water soluble monomers and, in addition, the reaction medium remains a clear, uniform, homogeneous mixture with no phase separation as the reaction proceeds to completion. Redox or free radical initiators are used to copolymerize both the water soluble and water insoluble monomers, forming terpolymers of ethylenically unsaturated amine base salts, alkyl(meth)acrylamides of alkyl(meth)acrylates and acrylamide. These polymers provide exceptional clean-up of waste waters containing organic contaminants. Also they are very effective for resolving oil-in-water emulsion, as such as those found in oil production.

Solution process for preparation hydrophobically functionalized cationic

Acrylic copolymer PSA compositions having enhanced peel strength without substantially decreasing shear properties have been formulated by homogeneously incorporating the tackifying resin into the polymer matrix. The tackifying resin is dissolved into a solution of alkyl (meth) acrylate and (meth) acrylic acid monomers prior to polymerization. To enhance the molecular weight of the resultant PSA, the monomer/tackifier solution is emulsion polymerized in the absence of chain transfer agents, such as antioxidant additives typically found in commercially available tackifiers, and allylic hydrogen present in many unsuitable tackifiers.

Internal resin-tackified acrylic polymers

Acrylic copolymer PSA compositions having enhanced peel strength without substantially decreasing shear properties have been formulated by producing the copolymer with a broad molecular weight distribution such that the ratio M.sub.w /M.sub.n is above 6, preferably above 10. The alkyl (meth)acrylate and (meth)acrylic acid monomers are emulsion polymerized over a temperature profile wherein the difference between the maximum and minimum polymerization temperatures is at least about 40.degree. C. and less than about 70.degree. C., preferably using a redox initiator system such as bromate/bisulfite.

Adhesive acrylic copolymers with a broad molecular weight distribution

Acrylic copolymer compositions which contain a tackifying hydrocarbon resin and a polyfunctional crosslinking monomer and the use of such composition in pressure-sensitive adhesives are described. The tackifying hydrocarbon resin is dissolved, as is the polyfunctional monomer, in a solution of alkyl(meth)acrylate and (meth) acrylic acid monomers and is present during the polymerization of the monomers to form a tackified acrylic copolymer.

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Kingwood, TX, United States of America

Henry W Yang