Dow Global Technolgoies LLC

Union Carbide Chemicals & Plastics Technology Corporation

Union Carbide Corporation

Neil W Dunchus

Jeffrey Morris Cogen

Timothy James Person

Manish Talreja

Antoni Adamczyk

Saurav S Sengupta

Gerrit Groot-Enzerink

Anthony Charles Neubauer

Gabriele Goethel

Gary W Buckler

Thomas Peterson

Thomas Herbert Peterson

Qian Gou

Susan Song

Jessica D Drazba

Raghunath Roy

Daniel Emley

Jessica Drazba

Jeffrey M Cogen

Bharat Indu Chaudhary

Mohamed Esseghir

Yabin Sun

Robert F Eaton

Matthew James Kalinowski

Manish K Mundra

Gary M Strandburg

Kevin D Maak

Abhijit Ghosh-Dastidar

Michael B Biscoglio

Dachao Li

Alex Kharazi

Caroline H Laufer

Michael J Parker

Gerrit Groot-en-Zernik

Albert Quaranta

Hao Ming Tu

Gerrit Groot-Enzernik

Antoni Adamcazyk

Haoming Tu

Timothy J Person

Thomas H Peterson

Danel Emley

A method of making a homogeneous mixture comprising a liquid hydrocarbylsulfonic acid and a polyolefin, the method comprising multiple stages of adding, mixing, and monitoring of temperature of the ingredients. The method enables making embodiments of the homogeneous mixture having more than 3 weight percent of the liquid hydrocarbylsulfonic acid incorporated into the polyolefin and prevents fouling of the mixer device.

Method of making a homogeneous mixture of polyolefin and liquid organic acid

Rheology-modified, additive-containing ethylenic polymer compositions are prepared in a continuously operated extruder comprising first, second and third zones by a process comprising the steps of: mixing in the second zone of the extruder an ethylenic polymer and a high-temperature decomposing peroxide at a temperature such that the half-life of the peroxide is equal to or greater than one minute and for a sufficient period of time to modify the rheology of the ethylenic polymer to produce a rheology-modified, melted ethylenic polymer for transfer to the third zone of the extruder; and adding to the third zone one or more additives to the rheology-modified, melted ethylenic polymer to produce the rheology-modified, additive-containing ethylenic polymer.

Continuous extruder process for manufacturing rheology-modified polyolefin for cable insulation layer, and related products

A peroxide-crosslinkable composition comprising:

Peroxide-crosslinkable compositions and processes for their manufacture

Cross-linkable polymeric compositions comprising an ethylene-based polymer, an organic peroxide, an optional cross-linking coagent, and an antioxidant. Such cross-linkable polymeric compositions are prepared by imbibing at least a portion of the organic peroxide, the optional cross-linking coagent, and the antioxidant into the ethylene-based polymer. Such cross-linkable polymeric compositions can be employed in forming coated conductors.

Cross-linkable polymeric compositions, methods for making the same, and articles made therefrom

The process for making extra high voltage cable insulation is improved by using a composition comprising in weight percent based on the weight of the composition: (A) 95 to 99.9% of an ethylene-based polymer; (B) 0.2 to 2.5% peroxide; (C) 0.01 to 0.5% of a sulfur-containing first antioxidant having at least one &#x2014;S(CH)COR group, wherein R is C6 to C20 alkyl; (D) 0.001 to 0.009%) of a sulfur-containing second antioxidant that does not contain a &#x2014;S(CH)COR group, wherein R is a C6 to C20 alkyl; (E) Optionally, an organic nitrogenous base; and (F) Optionally, a phenolic third antioxidant that does not contain a &#x2014;S(CH)COR group, wherein R is a C6 to C20 alkyl.

Cable insulation compositions comprising a sulfur-containing second antioxidant

A peroxide-crosslinkable composition comprising: The composition is useful in the manufacture of insulation sheaths for high and extra high voltage wire and cable.

The process for making extra high voltage cable insulation is improved by using a composition comprising in weight percent based on the weight of the composition: (A) 95 to 99.9% of an ethylene-based polymer; (B) 0.2 to 2.5% peroxide; (C) 0.01 NI to 0.5% of a sulfur-containing first antioxidant having at least one &#x2014;S(CH)2COR group, wherein R is a C6 to C20 alkyl; (D) 0.001 to 0.009%) of a phosphorus-containing second antioxidant that does not contain a &#x2014;S(CH)C0R group, wherein R is a C6 to C20 alkyl; (E) Optionally, an organic nitrogenous base; and (F) Optionally, a phenolic third antioxidant that does not contain a &#x2014;S(CH)C0R group, wherein R is a C6 to C20 alkyl.

Cable insulation compositions comprising a phosphorus-containing antioxidant

A peroxide-crosslinkable composition comprising: (A) A peroxide-crosslinkable polymer, e.g., a polyethylene; (B) A nitrogenous base, e.g., a low molecular weight, or low melting, or liquid nitrogenous base such as triallyl cyanurate (TAC); and (C) One or more antioxidants (AO), e.g., distearylthiodipropionate (DSTDP). The composition is useful in the manufacture of insulation sheaths for high and extra high voltage wire and cable.

Crosslinkable, semiconductive, peroxide-free thermoplastic compositions having a stable volume resistivity of less than 1000 ohm-cm comprise, based on the weight of the composition:

Thermoplastic, semiconductive compositions

Embodiments of the present disclosure include an extruder screw, (--) an extruder screw system () having a least one of a first extruder screw (--) and at least one of a second extruder screw, (--) an extruder system () having the extruder screw system (), a continuous process for the production of an aqueous dispersion using the extruder system, and an aqueous dispersion formed by the process. For the various embodiments, the extruder screw (--) includes a mixing and melting segment (); a high internal phase emulsion segment () that includes a kneading block having a plurality of disks with surfaces that define a plurality of channels; a distributing and pumping segment (); a first seal segment () between the mixing and melting segment () and the high internal phase emulsion segment (); a second seal segment () between the high internal phase emulsion segment () and the distributing and pumping segment (); and a third seal segment () at an end distal the distributing and pumping segment () relative the high internal phase emulsion segment ().

Extruder screw

Thiobis phenolic antioxidants are efficiently dry or melt blended with a tree-resistant, crosslinkable polyethylene by first forming a blend, preferably a dry blend, of the antioxidant with a polyalkylene glycol (PAG), and then mixing the blend with the polyethylene. The incorporation of thiobis phenolic antioxidant and PAG blend into polyethylene provides the PE with high oxidative induction time (OIT) which is a measure of the oxidative stability of the PE.

Thiobis phenolic antioxidant/polyethylene glycol blends

Processes for making a polyvinyl chloride (PVC) dry blend composition with a phthalate-free, bio-based plasticizer and filler, having a bulk density of greater than 0.67 g/cc and an extrusion rate of greater than 65 gm/minute for a single screw extruder of 0.75 in barrel diameter with a 25:1 L:D general purpose polyethylene screw at 75 rotations per minute screw speed, and compositions made by the processes are provided.

Process for mixing polyvinyl chloride with a bio-based plasticizer

Dispersions and methods for forming dispersions that include a higher crystallinity polyolefin and at least one dispersing agent are disclosed. Various applications for use of the dispersions are also disclosed.

Dispersions of higher crystallinity olefins

A process comprising the following steps: (a) maintaining the process in an essentially oxygen-free state; (b) introducing a first polymer directly from the polymerization reactor in which it was prepared, in molten form, into a mixer/compounder; (c) reducing any higher pressure accompanying the first polymer from the polymerization reactor to the mixer/compounder to a pressure in the range of about 0 to about 5 barg; (d) adding additives selected from the group consisting of antioxidants, second polymers, other polymer enhancing additives, and mixtures thereof to the mixer/compounder, and mixing same with the molten first polymer; (e) passing the molten mixture from step (d) through one or more screens, each having a maximum opening size of about 25 microns; (f) pelletizing the mixture from step (e); (g) introducing the pellets into a spraying chamber, the interior of said chamber being operated in a static condition; (h) spraying the pellets in the chamber with a crosslinking formulation including an organic peroxide and, optionally, a scorch retarder and/or a cure booster to coat the pellets; and (i) annealing the coated pellets to impregnate the pellets with the crosslinking formulation.

Process for the production of a thermosetting composition

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Kinnelon, NJ, United States of America

Neil W Dunchus