| Patent Number |
Title Of Patent |
Date Issued |
| H766 |
Polyarylate compositions |
April 3, 1990 |
| A polymer blend of a polyarylate with a minor amount of a segmented polyesteramide is useful as a molding composition, with improved impact strength and elongation. |
| 5994560 |
Resolution of racemic mixtures using polymers containing chiral units |
November 30, 1999 |
| Described herein is a novel process to resolve a racemic compound into its optically active isomers without need for chemical transformation such as salt formation. The process advantageously utilizes polymers containing chiral moieties in their repeat units as well as exhibiting critica |
| 5922828 |
Process for producing polyethylene terephthalate using a specific catalyst stabilizer system |
July 13, 1999 |
| A novel process to produce polyethylene terephthalate (PET) using a specific catalyst stabilizer system is described. The catalyst stabilizer system is specific for producing PET wherein the polycondensation catalyst is a titanium and the stabilizer possesses an irreversible oxidation |
| 5916506 |
Electrically conductive heterofil |
June 29, 1999 |
| An antistatic bicomponent fiber includes a nonconductive first component made of a first polymer and a conductive second component made of a second polymer containing a conductive material, where the second polymer has a lower melting point than the first polymer. The bicomponent fiber i |
| 5869026 |
Tripodal carboxamide ligands for MRI contrast agents |
February 9, 1999 |
| Novel ligands for use in MRI contrast agents and which have the formula ##STR1## wherein R.sub.1 -R.sub.14, M", l, m, and n are defined herein. |
| 5861140 |
Tripodal paramagnetic contrast agents for MR imaging |
January 19, 1999 |
| A composition of matter having the formula ##STR1## wherein R.sub.1 -R.sub.14, M, l, m, and n are defined herein and which have application as MRI contrasting agents. |
| 5861138 |
Ligands for MRI contrast agent |
January 19, 1999 |
| Novel ligands for use in MRI contrast agents and which have the formula ##STR1## wherein R.sub.1 -R.sub.14, M", l, m, and n are defined herein. |
| 5851930 |
Rigid fiber network structures having improved post-yield dimensional recovery, method of making |
December 22, 1998 |
| A rigid three-dimensionally shaped fiber network structure having improved post-yield dimensional recovery is composed of a deformed textile fabric network structure containing: (A) at least one oriented, semi-crystalline monofilament yarn containing a thermoplastic polymer and disposed |
| 5851668 |
Cut-resistant fiber containing a hard filler |
December 22, 1998 |
| A fiber having increased cut resistance is made from a fiber-forming polymer and a hard filler having a Mohs Hardness Value greater than about 3. The filler is included in an amount of about 0.05% to about 20% by weight. In preferred embodiments, the fiber-forming polymer is poly(eth |
| 5844036 |
Highly filled injection moldable polyetherketones |
December 1, 1998 |
| Injection moldable, highly filled polymer composites are provided which exhibit high dimensional stability at temperatures above the glass transition temperature of the matrix polymer. The heat distortion temperature of the composites approaches that of the crystal melting temperatur |
| 5843609 |
Polyester toner microspheres for electrophotographic imaging systems |
December 1, 1998 |
| This invention provides a free-flowing polyester dye microspheric powder which has superior stability and transparency for application in electrophotographic imaging systems. In another embodiment this invention provides a non-aqueous dispersion polymerization process for producing the |
| 5834122 |
Spectrally tuned multiple bandpass filters for video displays |
November 10, 1998 |
| Disclosed in this invention is an optical filter to enhance the contrast and brightness of images from a color display. The filter comprises suitable dyes and a polymer matrix, applied in a suitable form on the display unit. Such filters have utility in devices based on CRTs, plasmas |
| 5833321 |
Vehicle seat having high air circulation and materials used therein |
November 10, 1998 |
| Automobile seats having improved comfort have a spacer layer included within the layers of cushioning materials. The spacer layer has a large void volume and nearly unrestricted flow of air. Heated, cooled or ambient air can be forced into the spacer layer of the seat, making the seat mo |
| 5827611 |
Multilayered thermoplastic article with special properties |
October 27, 1998 |
| Thermoplastic multicomponent articles are shown wherein the components comprise a polymer matrix wherein one component contains at least one uniformly distributed substantially unreactive low molecular weight, guest molecule or compound which imparts different properties to the component |
| 5814711 |
Polymerization medium to prepare multi-block copolymers |
September 29, 1998 |
| This invention discloses a novel process to prepare multi-block copolymers with high molecular weights from two immiscible polymer segments. In one embodiment, the two polymer segments are reacted in a solvent mixture which comprises N-methyl-2-pyrrolidinone and diglyme. Such polymers ar |
| 5801269 |
Processes for cystallizing 4, 4'-dimethyl bibenzoate (DMBB) recovered from polyester byproduct s |
September 1, 1998 |
| Processes for recovering 4,4'-dimethyl bibenzoate (DMBB) from byproduct streams of dimethyl terephthalate (DMT) production are disclosed. The byproduct streams are treated to produce an overhead stream which includes DMBB. In one aspect of the invention, the overhead product stream is ad |
| 5798432 |
Method of making thermotropic liquid crystalline polymers containing hydroquinone |
August 25, 1998 |
| Liquid crystalline polymers that are made from 4-hydroxybenzoic acid, 2,6-naphthalenedicarboxylic acid, terephthalic acid, hydroquinone, and N-acetyl-4-aminophenol by heating the monomers in the presence of acetic anhydride are more easily synthesized in high molecular weight if isop |
| 5777129 |
Hyperbranched polymers |
July 7, 1998 |
| The present invention provides novel highly branched macromolecule polymers that have highly controlled molecular architectures, and having the formula: ##STR1## wherein R.sub.4, R.sub.5, and R.sub.6 are defined herein. |
| 5773591 |
Process for preparing coumarin sulfonates |
June 30, 1998 |
| A novel process for preparing sulfonic acid esters and amides of benzo-heterocyclic diazo diketo compounds, such as substituted diazo-4-oxo-3,4-dihydrocoumarins, which are useful synthetic intermediates in a wide variety of applications including photoresists, opto-electronics, agric |
| 5773144 |
Rubber-polyester composites including a functionally terminated copolyester |
June 30, 1998 |
| A rubber-polyester composite comprising a rubber and a core-and-sheath heterocomponent fiber wherein the fiber core is formed from a linear polyester derived from an alkyl glycol and an aromatic diacid, and wherein the fiber sheath is formed from a compatibilizing acid-terminated or |
| 5772949 |
Thermally expandable, viscosity modified wax compositions and method of use in actuators |
June 30, 1998 |
| A thermally expandable wax composition and its use in polymer-based actuators is disclosed and claimed. The compositions are wax-based and include conductive filler as well as a viscosity modifier to stabilize the composition against segregation. Optionally included are thermoxidative |
| 5754725 |
Multiple fiber connector for injection molded multiple fiberoptic coupler unit and cladding for |
May 19, 1998 |
| The invention relates to multiple fiber connectors for thermoplastic optical couplers and fibers. The multiple-fiber connectors facilitate the connection of optical fibers to a star coupler and provide low levels of light loss between input/output ports of a coupler. The invention furthe |
| 5746949 |
Polarizer films comprising aromatic liquid crystalline polymers comprising dichroic dyes in thei |
May 5, 1998 |
| This invention provides novel liquid crystalline polymers which comprise, in the repeat units of their main chains, residues of suitable dichroic dyes. The polymers yield polarizer films with superior polarizing efficiency, transmittance, dichroic ratio, and thermal and humidity stab |
| 5744204 |
Laminates comprising coextruded liquid crystal polymer films and discardable thermoplastic outsi |
April 28, 1998 |
| This invention discloses laminates comprising a liquid crystal polymer film inside and non-adherent, non-liquid crystalline polymer film on the outside, prepared by a process of coextrusion. Delamination of the outside layers yields a liquid crystal polymer film of superior surface quali |
| 5739383 |
Resolution of racemic mixtures using polymers containing chiral units |
April 14, 1998 |
| Described herein is a novel process to resolve a racemic compound into its optically active isomers without need for chemical transformation such as salt formation. The process advantageously utilizes polymers containing chiral moieties in their repeat units as well as exhibiting critica |
| 5739193 |
Polymeric compositions having a temperature-stable dielectric constant |
April 14, 1998 |
| A polymeric composition having a high dielectric constant which varies little with temperature is made from a thermoplastic polymer, a high dielectric ceramic having a dielectric constant of at least about 50 at 1.0 Ghz and 20.degree. C., and a second ceramic material having a dielec |
| 5738918 |
Laminates of liquid crystalline polymeric films for polarizer applications |
April 14, 1998 |
| This invention provides laminates useful for display device applications. An illustrative laminate comprises a polarizing film, and a protective layer, bonded by means of an intermediary adhesive layer. A polarizing film useful for such a laminate construction comprises a liquid crys |
| 5738803 |
Polarizer films comprising wholly aromatic liquid crystalline polymers and dichroic dyes |
April 14, 1998 |
| This invention provides novel liquid crystalline polymers which, when mixed with a suitable dye and extruded, yields polarizer films with superior polarizing efficiency, transmittance, dichroic ratio, and thermal and humidity stability. The invention further provides a process to prepare |
| 5731401 |
Process for the preparation of thermotropic aromatic polyesters directly from dialkyl aromatic e |
March 24, 1998 |
| A new process is provided for the formation of aromatic polyesters directly from the reaction of dialkyl ester of an aromatic carboxylic acid with dihydric phenols. The polycondensation is carried out in the presence of (a) a condensing agent; (b) a catalyst selected from the group consi |
| 5731062 |
Thermoplastic three-dimensional fiber network |
March 24, 1998 |
| Three dimensional fiber networks which are semi-rigid and dimensionally stable are made from textile fabrics that have projections and optional depressions which are compressible and return to their original shape after being compressed. The fiber networks are made by the thermo-mech |
| 5726296 |
Process for preparing photoactive coumarin derivatives |
March 10, 1998 |
| Novel processes for the preparation of a new class of coumarin derivatives, which are useful as photoactive compounds in a wide variety of applications including photoresists and other opto-electronic applications, are disclosed and claimed. The process involves a multi-step syntheti |
| 5726295 |
Photoactive coumarin derivatives |
March 10, 1998 |
| A new class of 3,4-dihydrocoumarin derivatives which are useful as photoactive compounds in a wide variety of applications including photoresists and other opto-electronic applications are disclosed and claimed. Preferred embodiments include ether, ester, carbonate, and sulfonate der |
| 5725950 |
Coating of preceramic articles with silicon and/or carbon during pyrolysis to ceramic |
March 10, 1998 |
| A process for the preparation of carbon and/or silicon coated ceramic fibers is disclosed involving contact of a preceramic fiber with a hydrocarbon or a silane which decomposes at a temperature no higher than 500.degree. C. at 1 atmosphere. |
| 5719354 |
Monolithic LCP polymer microelectronic wiring modules |
February 17, 1998 |
| The invention provides a multilayer microelectronic circuit board including a laminate of a plurality of circuit layers containing conductive vias within the layers or a combination of conductive vias and conductive wiring patterns on a surface of the layers, the layers comprising a firs |
| 5710269 |
Method of making starch acetate using an acid catalyst |
January 20, 1998 |
| Methods of synthesizing starch acetate containing at least 20% high molecular weight carbohydrates using a MSA catalyst alone, or in combination with a co-catalyst promoting cross-linking, such a phosphoric acid, are described. The MSA is desirably added slowly following beginning of |
| 5710241 |
Monoanhydride compounds, method of making same and reaction products thereof |
January 20, 1998 |
| The present invention relates to monoanhydride monomer compounds, methods of making such compounds and reaction products of the monoanhydride-diacid compounds with other monomers. The inventive monomer compounds exhibit selective reactivity, that is, the dianhydride locus is substantiall |
| 5709740 |
Thermally expandable, viscosity modified wax compositions and method of use in actuators |
January 20, 1998 |
| A thermally expandable wax composition and its use in polymer-based actuators is disclosed and claimed. The compositions are wax-based and include conductive filler as well as a viscosity modifier to stabilize the composition against segregation. Optionally included are thermoxidative |
| 5707566 |
Process for preparing high performance polarizer films |
January 13, 1998 |
| This invention provides a novel process to prepare high performance polarizing film. In one embodiment, the process includes melt-blending a film-forming wholly aromatic thermotropic liquid crystalline polyester and a dichroic dye and then extruding the blend at a suitable temperature to |
| 5703202 |
Process for treating liquid crystal polymer film |
December 30, 1997 |
| A process for treating a liquid crystal polymer film which includes the steps of: heating a film obtained by extrusion molding of a liquid crystal polymer, while contacting at least one surface of the film with a supporting body, to melt the polymer; cooling the melted polymer to form a |
| 5695710 |
Transesterified pet/pen via melt extrusion |
December 9, 1997 |
| A process for making a transparent blow molded product made of a copolyester of PET and PEN that does not thermally deform at temperatures up to 85-87 C., and the product of that process, especially a transparent blow molded bottle. The copolyester is made by transesterifying a 20/80 |
| 5693279 |
Starch acetate and blends thereof with metal chelates |
December 2, 1997 |
| Filaments characterized by enhanced tensile strength, which are composed of starch acetate or a blend of starch acetate and cellulose acetate and metal chelates, are provided. Also provided are methods for varying the viscosity of a starch acetate solution or starch acetate and cellulose |
| 5674589 |
Copolyester compositions comprising poly(ethylene naphthalate bibenzoate) biaxially oriented cop |
October 7, 1997 |
| A copolyester composition comprising poly(ethylene naphthalate bibenzoate) ("PENBB") and 0.001 to 5% by weight of fine silica particles having an average diameter of 0.01 to 3.0 .mu.m. Further, films are made from this copolyester composition. |
| 5672725 |
Process for preparing quinones |
September 30, 1997 |
| The invention provides a novel process to oxidize 1,4-dihydroxy aromatic compounds into the corresponding quinones using sulfuryl chloride as the oxidant. The process is simple and cost effective and provides an efficient way to synthesize hindered quinones. |
| 5672426 |
high barrier transparent films |
September 30, 1997 |
| A process for making a transparent film comprising a liquid crystalline polymer, and a transparent film made thereby having high barrier properties. In this process, the LCP is dissolved in an appropriate solvent, then cast into a film at ambient or near-ambient temperatures. The fil |
| 5672296 |
Polarizer films comprising wholly aromatic liquid crystalline polymers and dichroic dyes |
September 30, 1997 |
| This invention provides novel liquid crystalline polymers which, when mixed with a suitable dye and extruded, yields polarizer films with superior polarizing efficiency, transmittance, dichroic ratio, and thermal and humidity stability. The invention further provides a process to prepare |
| 5667719 |
High extinction polarizer films comprising liquid crystal polymeric moieties |
September 16, 1997 |
| This invention provides all organic high extinction polarizers based on blends of novel liquid crystalline polymers and suitable dichroic dyes. The invention further provides a process to prepare such polarizer films. |
| 5656714 |
Polyester from terephthalic acid, 6-hydroxy-2-naphthoic acid, 4-hydroxybenzoic acid, 4,4'-biphen |
August 12, 1997 |
| An aromatic polyester having recurring monomer units derived from terephthalic acid, 6-hydroxy-2-naphthoic acid, p-hydroxybenzoic acid, 4,4'-biphenol, and resorcinol. This polyester is melt processible and may be amorphous or semi-crystalline. |
| 5654097 |
Heterofilament and fused cord thereof |
August 5, 1997 |
| Bilayer filaments and fused cords thereof are described. The product is particularly useful for tire cord and filaments include a core of a partially crystalline, oriented polymer and a shell or sheath formed of a blend of robber and a relatively low melting polymer. A particularly p |
| 5654045 |
Multiaxially reinforced LCP sheet |
August 5, 1997 |
| A melt consolidated, multiaxially oriented liquid crystal polymer ("LCP") sheet or other article formed from LCP particles. One embodiment includes a multi-component LCP sheet in which particles of a higher melting LCP are imbedded in a matrix of a lower melting LCP. These LCP components |
| 5648535 |
Process for preparing acyl aminophenols |
July 15, 1997 |
| A process for the production of N-acylaminophenols by the concurrent hydrogenation of a nitrophenol to an aminophenol and the acylation of the aminophenol with acyl anhydride takes place on a continuous basis in a stirred tank reactor in which liquid product is continuously withdrawn |
