Conoco Inc.

Conocophillips Company

Invista North America S.a.r.l.

John A Rodgers

H Ernest Romine

James R McConaghy

Roger A Ross

Daniel F Rossillon

Andrea K Zimmerman

Lorita Davis

Joseph Anthony Perrotto

Edward J Nanni

W Mark Southard

Robert Carl Boger

The invention provides an entangled continuous filament yarn comprising at least two bicomponent filaments each comprising poly(trimethylene terephthalate) and poly(ethylene terephthalate), wherein the entangled yarn has a node frequency of about 40 to 50 nodes/m, a Crimp Potential of at least about 40%, substantially no twist, and a standard deviation of intervals between nodes of no more than about 1.1 cm. The invention further provides a process for making such an entangled yarn.

Entangled bicomponent yarn and process to make the same

A solvating component for a solvated mesophase pitch. The solvated component includes a mixture of aromatic hydrocarbons having boiling points in the atmospheric equivalent boiling point range of about 285&deg; to about 500&deg; C. (about 550&deg; F.-932&deg; F.). At least 80% of the carbon atoms of the hydrocarbons are aromatic as characterized by carbon 13 NMR. The aromatic hydrocarbons are selected from a group consisting of aromatic compounds having 2 to 5 aromatic rings, substituted aromatic compounds having 2 to 5 aromatic rings wherein said substituents are alkyl groups having 1 to 3 carbons, hydroaromatic compounds having 2 to 5 rings, substituted aromatic compounds having 2 to 5 rings wherein said substituents are alkyl groups having 1 to 3 carbons, and mixtures thereof.

Solvating component and solvent system for mesophase pitch

The present invention provides a process for thermosetting pitch fibers in reduced times, at low concentrations of oxygen and at higher temperatures than previously possible. Additionally, the present invention provides a pitch fiber which has an oxygen diffusion rate to the center of the fiber which is competitive with the rate of oxidation at the fiber's surface. Further, the present invention provides a high density pitch fiber batt which thermosets without loss of fiber structure.

High temperature, low oxidation stabilization of pitch fibers

The present invention provides a process and apparatus for blow spinning continuous fibers. The novel process utilizes a tensioning device to preclude slack in the fiber. The present invention also provides novel fiber products which utilize continuous fibers prepared by a blow spinning process.

Process and apparatus for collecting continuous blow spun fibers

Organometallic containing mesophase pitches for spinning into pitch carbon fibers

The present invention provides a process and for producing a single layer batt of fibers prepared by multiple die tips. The present invention also provides a novel multiple tip blow spinning die.

Process for forming a single layer batt from multiple curtains of fibers

An improved process is disclosed for producing a unique metals-containing anisotropic pitch suitable for carbon fiber manufacture. Soluble, aromatic-organometallic compounds are added to a carbonaceous feedstock which is substantially free of mesophase pitch and the resulting composition is heat soaked to produce an isotropic pitch product containing mesogens and soluble, aromatic-organometallic compounds. Next, the pitch product is solvent fractionated to separate mesogens which contain metals from the organometallic compounds. The metals-containing mesogens are heated to a temperature sufficient to cause fusion to produce a metals-containing mesophase pitch. In another method, the carbonaceous feedstock is heat soaked to produce an isotropic pitch product containing mesogens and high molecular weight, soluble, aromatic-organometallic compounds are added to the mesogen containing isotropic pitch product prior to solvent fractionation. Metals-containing carbon fibers produced from the mesophase pitch exhibit enhanced stabilization, tensile strength and modulus properties. Alternatively, the solvent fractionation or separation is conducted under supercritical extraction conditions to produce a metals-containing mesophase pitch. Organometallic compounds may be added to the carbonaceous feedstock either prior to or after the heat soak step.

Organometallic containing mesophase pitches for spinning into pitch

The present invention provides an apparatus for producing a single layer batt of fibers prepared by multiple die tips. The present invention also provides a novel multiple tip blow spinning die.

Apparatus for forming a single layer batt from multiple curtains of

The present invention provides a blow spinning die particularly suited for spinning solvated pitch into fibers having a random cross-sectional structure. Additionally, the present invention provides a process for blow spinning fibers from solvated pitches. The present invention also provides pitch fibers having a high energy internal molecular structure. Finally, the present invention provides carbon fibers which have a non-radial internal structure.

Blow spinning die and process for spinning carbon fibers from solvated

The present invention provides a process and apparatus for collecting relatively straight blow spun fibers in a two dimensional configuration. The process utilizes a venturi to preclude the kinking and bending of the fibers until the fibers have substantially thermoset. A diffusion chamber allows the fibers to be collected without entangling.

Growing community of inventors

Dayton, TN, United States of America

John A Rodgers