Dow Global Technologies LLC

Union Carbide Chemicals & Plastics Technology Corporation

Rohm and Haas Company

Manish K Mundra

Abhijit Ghosh-Dastidar

Bharat Indu Chaudhary

Jeffrey Morris Cogen

Robert F Eaton

Geoffrey David Brown

Lin Fu

Rajen M Patel

Kalyan Sehanobish

Yabin Sun

Saurav S Sengupta

Manish Talreja

Robert E Scheid, Jr

Timothy James Person

Bruce Bell

Bin Li

Sarat Munjal

Tong Wu

Peter C Dreux

Arkady L Krasovskiy

Anthony Charles Neubauer

Santosh S Bawiskar

Neil W Dunchus

Li Fan

Xiangyang Tai

Robert M Campbell

Yichi Zhang

Xiaodong Zhang

Given Jing Chen

Michael B Biscoglio

Dachao Li

Caroline H Laufer

Journey Lu Zhu

Rajesh P Paradkar

Yongyong Yang

Anteneh Z Worku

Yurong Cao

Brian R Maurer

Kawai Peter Pang

Xiang Yang Tai

Raghunath Roy

Liqiang Fan

Kevin Paul Rogers

Bruce Michael Hasch

Marcio Teixeira Alves

Jing Given Chen

Caroline M Grand

Chieh Ying Heah

Kenneth Hin-Leong Ong

Vivek Tomer

Scott Wills

Kawai P Pang

Jing J Chen

Robert Emmett Scheid Jr

Jr Robert E Scheid

Bruce M Bell

Li Qiang Fan

A catalyst system comprising a combination of a tin-based moisture-cure catalyst, a titanium(IV) compound that is titanium dioxide or a titanium alkoxide, and zinc oxide. A catalyst masterbatch comprising the catalyst system and a carrier resin. A moisture-curable prepolymer formulation comprising the catalyst masterbatch and a (hydrolyzable silyl group)-functional polyolefin prepolymer. Methods of making and using same. Cured polymer products made therefrom. Articles containing or made from same.

Catalyst system

A method of making a homogeneous mixture of polyolefin solids and liquid additive without melting the polyolefin solids during the making. The method comprises applying acoustic energy at a frequency of from 20 to 100 hertz to a heterogeneous mixture comprising the polyolefin solids and the liquid additive for a period of time sufficient to substantially intermix the polyolefin solids and the liquid additive together and while maintaining temperature of the heterogeneous mixture above the freezing point of the at least one liquid additive and below the melting temperature of the polyolefin solids, thereby making the homogeneous mixture without melting the polyolefin solids.

Method of making a homogeneous mixture of polyolefin solids and liquid additive

A method of making a homogeneous mixture of polyolefin solids and a particulate solid additive without melting the polyolefin solids or the particulate solid additive during the making. The method comprises applying acoustic energy at a frequency of from 20 to 100 hertz to a heterogeneous mixture comprising the polyolefin solids and the particulate solid additive for a period of time sufficient to substantially intermix the polyolefin solids and the particulate solid additive together and while maintaining temperature of the heterogeneous mixture below the melting point of the at least one particulate solid additive and below the melting temperature of the polyolefin solids, thereby making the homogeneous mixture without melting the polyolefin solids or the at least one particulate solid additive.

Method of making a homogeneous mixture of polyolefin solids and solid additive

A moisture-curable polyethylene formulation comprising a (hydrolyzable silyl group)-functional polyethylene copolymer and a condensation cure catalyst. The formulation is designed to be rapidly moisture curable under ambient conditions. Also methods of making and using same; cured polymer products made therefrom; and articles containing or made from same.

Rapidly moisture-curable polyethylene formulation

Silane-functionalized compositions comprising a polymeric brominated flame retardant with a weight average molecular weight (Mw) of equal to or greater than (&#x2265;) 1,000 g/mol exhibit improved burn and crush strength properties as compared to silane-functionalized compositions alike in all aspects except that the Mw of the brominated flame retardant is less than (&#x3c;) 1,000 g/mol.

Compositions comprising brominated polymeric flame retardant

Articles made from a moisture-curable, polymeric composition comprising in weight percent based on the weight of the composition:

Flame-retardant, moisture-cured wire and cable constructions with improved glancing impact performance

The process of curing a silane-functionalized ethylenic polymer using a tin-based catalyst, e.g., dibutyltin dilaurate, is accelerated by the addition of a titanium (IV) oxide.

Compositions comprising a tin-based catalyst and titanium dioxide for moisture cure of silane-functionalized ethylenic polymers

Articles made from a moisture-crosslinkable, polymeric composition comprising in weight percent based on the weight of the composition: (A) 10 to 99.99 wt % of a nonpolar ethylenic polymer grafted with silane functionality (Si-g-npPE), the npPE having the following properties before grafting: (1) a vinyl content of 0.2 to 0.7 per 1,000 carbon atoms, (2) a melt index of 1.5 to 7.0 dg/min, (3) a density of 0.913 to 0.965 g/cc, and (4) a molecular weight distribution (Mw/Mn) of equal to or less than 8; (B) 0.01 to 20 wt % of a silanol condensation catalyst; and (C) 0 to 70 wt % of a flame retardant additive; exhibit one or more of desirable (a) silane grafting efficiency; (b) hot creep performance as a cable jacket/insulation after moisture crosslinking; (c) retained dielectric strength after glancing impact as a moisture crosslinked cable construction; and (d) crush resistance as a moisture crosslinked cable construction.

Moisture-cured wire and cable constructions

The present disclosure provides a composition. The composition includes a silanol functionalized polyolefin; an anhydride-free brominated flame retardant; antimony trioxide; and the composition has an antimony (Sb) to bromine (Br) molar ratio (Sb:Br molar ratio) from 0.37 to 1.05. The present disclosure also provides a coated conductor. The coated conductor includes a conductor and a coating on the conductor, the coating including a composition. The composition includes a silanol functionalized polyolefin; an anhydride-free brominated flame retardant; antimony trioxide; and the composition has an antimony (Sb) to bromine (Br) molar ratio (Sb:Br molar ratio) from 0.37 to 1.05.

Flame retardant polymeric composition

A composition having a) an ethylene-based copolymer made of units derived from ethylene and units derived from at least one comonomer of Structure I, wherein R is a C1-C2 hydrocarbyl group and R' is a C1-C4 hydrocarbyl group; b) at least one antioxidant; c) from greater than 0 wt % to less than 3 wt % of an organic peroxide, based on the total weight of the composition; d) optionally, at least one co-agent; and e) optionally, at least one tree retardant, wherein the ethylene-based copolymer has a melt temperature (Tm) (&#xb0; C.) and a comonomer content in moles per 100 grams ethylene-based copolymer (mol/100 g) (comonomer) that satisfies the relationship Tm&#x3c;&#x2212;73.022 (comonomer)+109.3. 

Composition with balance of dissipation factor and additive acceptance

The present disclosure is directed to a plasticizer composition, polymeric compositions containing the plasticizer composition, and coated conductors comprising the polymeric composition. The plasticizer composition comprises an epoxidized fatty acid alkyl ester having an APHA color value of less than 100, a triepoxide content of at least 6.5 weight percent, and an oxirane oxygen content of at least 5 grams oxirane per 100 grams of epoxidized fatty acid alkyl ester.

Plasticizer compositions and methods for making plasticizer compositions

The present disclosure is directed to a plasticizer, a polymeric composition containing the plasticizer, and conductors coated with the polymeric composition. The plasticizer includes a blend of an epoxidized soybean oil and a trans-esterified epoxidized fatty acid methyl ester. The trans-esterified epoxidized fatty acid methyl ester has an oxirane value greater than or equal to 6.8%. The plasticizer, the polymeric composition, and the coated conductor retain color during heat aging.

Plasticizer for color retention during heat aging

The present disclosure is directed to a plasticizer composition, polymeric compositions containing the plasticizer composition, and conductors coated with the polymeric composition. The plasticizer composition includes a first plasticizer comprising epoxidized fatty acid alkyl esters and a second plasticizer comprising an epoxidized natural oil. The plasticizer composition, first plasticizer, and/or second plasticizer can undergo one or more color-reducing treatment processes, such as distillation, filtration, and/or peroxide treatment.

A die assembly () for extruding a polymeric coating onto a wire so as to impart a matte finish to the coating surface is provided. The die assembly () comprises: A) a die tip () comprising a tubular channel () through which a wire can pass, the channel () positioned along the central longitudinal axis () of the die assembly (); B) a die body () comprising a trunk () and a head (), the head () comprising a tubular channel (), the head tubular channel () comprising a die land (), the trunk () positioned about the die tip () so as to define an annular space () between the exterior surface () of the die tip () and the interior surface () of the trunk (); C) a die holder () positioned about and in contact with the exterior surface () of the trunk (); and D) a radiator () positioned about and in contact with the exterior surface () of the die land () of the die head ().

Die assembly with cooled die land

The present disclosure is directed to a plasticizer, polymeric compositions containing the plasticizer, and conductors coated with the polymeric composition. The plasticizer includes (i) an epoxidized fatty acid methyl ester, (ii) an epoxidized natural oil, and (iii) an epoxidized tallate ester. Polymeric compositions containing a polymeric resin and the plasticizer exhibit a weight loss less than 50 mg/cmafter exposure to 100&#xb0; C. for seven days. Conductors coated with the polymeric composition (containing the plasticizer) pass the low temperature unwind test of UL719 and exhibit a weight loss less than 50 mg/cmafter exposure to 100&#xb0; C. for seven days.

Plasticizer for low temperature unwind with weight retention during heat aging

Growing community of inventors

Collegeville, PA, United States of America

Manish K Mundra