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| Number | Title | Issue Date |
| 6258884 | Polymeric acetals resistant to mineral deposition Polymeric compositions characterized by containing polymeric acetals and zinc-containing inorganic fillers exhibiting improved resistance to the formation and adhesion of mineral deposits when used in applications wherein the composition is exposed to wat... | 07/10/2001 |
| 6090888 | Cyclic olefin polymer blends exhibiting improved impact resistance and good transparency This invention discloses blends of cyclic olefin polymers and styrene-containing elastomers useful as molding compositions to mold articles therefrom. The articles so molded exhibit improved mechanical properties without any significant effect on optical ... | 07/18/2000 |
| 6020414 | Method and compositions for toughening polyester resins An acrylic modifier composition for improving impact resistance of polyester compositions is provided which comprises (a) between about 10% to about 90% by weight of a first component selected from the group consisting of an ethylene alkyl acrylate co-pol... | 02/01/2000 |
| 5994560 | Resolution of racemic mixtures using polymers containing chiral units 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 un... | 11/30/1999 |
| 5965273 | Polymeric compositions having a temperature-stable dielectric constant A polymeric composition which has a dielectric constant K' greater than 4 at 20° C. which varies little with temperature is made from a polymer or mixture of polymers and a ceramic or a mixture of ceramics, where the polymer or mixture of polymers has a ... | 10/12/1999 |
| 5962122 | Liquid crystalline polymer composites having high dielectric constant Polymeric compositions having a high dielectric constant are made from a thermotropic liquid crystalline and a ceramic having a dielectric constant which is greater than about 50 at a frequency of 1.0 GHz. The compositions have a dielectric constant of at... | 10/05/1999 |
| 5925710 | Infrared absorbing polyester packaging polymer The present invention relates to a polyester polymer composition containing graphite in the range of about 3-60 parts per million based on the polyester. The size of the graphite particles is greater than about 0.5 μm. As an upper limit, however, any par... | 07/20/1999 |
| 5922828 | Process for producing polyethylene terephthalate using a specific catalyst stabilizer system 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 posse... | 07/13/1999 |
| 5919889 | Melt processable poly(ester-amide) capable of forming an anisotropic melt containing an aromatic moiety capable of forming and amide linkage A melt processable poly(ester-amide) which is capable of forming an anisotropic melt phase is provided. A poly(ester-amide) of the present invention may have recurring units of: (a) 4-hydroxybenzoyl moiety, (b) 6-oxy-2-naphthoyl moiety, (c) 4,4'-biphenol ... | 07/06/1999 |
| 5916506 | Electrically conductive heterofil 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... | 06/29/1999 |
| 5896680 | Shoes comprising three-dimensional formed fiber product Shoes for use in demanding applications, primarily athletics, are made from a three-dimensional fiber network that is semi-rigid and resilient. The fiber network is made from a textile fabric that has an array of projections made from the same fabric risi... | 04/27/1999 |
| 5885668 | Process for surface modification of an LCP film The surface of an aromatic liquid crystalline polyester film is modified to have improved adhesion by: (a) applying an adhesion-promoting coating to the film; (b) subsequently heating the film to a temperature above the melting point of the polyester; and... | 03/23/1999 |
| 5882322 | Medical casts and other orthopedic devices comprising thermoplastic three-dimensional fiber networks Cast padding materials and padding and lining materials for other orthopedic devices are made from three dimensional fiber networks which are semi-rigid and dimensionally stable. The fiber networks are made from textile fabrics that have projections and o... | 03/16/1999 |
| 5881201 | Backlighting lightpipes for display applications This invention discloses improved lightpipes for backlighting applications in liquid crystal display devices. The lightpipes comprise transparent polymers with scattering centers. A preferred composition for such lightpipes comprises a cycloolefin polymer... | 03/09/1999 |
| 5876570 | Purification process for cyclic formals A purification process for cyclic formals, in which water is efficiently removed from a crude cyclic formal, namely, a mixture of a cyclic formal and water which is difficult to be separated from the mixture, thereby obtaining a cyclic formal of high puri... | 03/02/1999 |
| 5869025 | Tripodal aromatic heterocycle carboxamide MRI contrast agents A composition of matter having the formula ##STR1## wherein R1 -R14, M, l, m, and n are defined herein and which have application as MRI contrasting agents.... | 02/09/1999 |
| 5869026 | Tripodal carboxamide ligands for MRI contrast agents Novel ligands for use in MRI contrast agents and which have the formula ##STR1## wherein R1 -R14, M", l, m, and n are defined herein.... | 02/09/1999 |
| 5861140 | Tripodal paramagnetic contrast agents for MR imaging A composition of matter having the formula ##STR1## wherein R1 -R14, M, l, m, and n are defined herein and which have application as MRI contrasting agents.... | 01/19/1999 |
| 5861138 | Ligands for MRI contrast agent Novel ligands for use in MRI contrast agents and which have the formula ##STR1## wherein R1 -R14, M", l, m, and n are defined herein.... | 01/19/1999 |
| 5851668 | Cut-resistant fiber containing a hard filler 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 fibe... | 12/22/1998 |
| 5844036 | Highly filled injection moldable polyetherketones 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 t... | 12/01/1998 |
| 5837872 | Process for preparation of N-acyl-aminodiacids This invention relates to an improved process for preparing selected N-acyl-aminodiacids such as lauroyl glutamic acid.... | 11/17/1998 |
| 5833321 | Vehicle seat having high air circulation and materials used therein 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 laye... | 11/10/1998 |
| 5834122 | Spectrally tuned multiple bandpass filters for video displays 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 d... | 11/10/1998 |
| 5831087 | Macrocyclic imide compounds Macrocycle compounds of precise molecular geometry are disclosed and claimed, useful for a variety of purposes including membranes, molecular recognition and any other purpose where specific molecular macrogeometry is important. Most preferably, the macro... | 11/03/1998 |
| 5827611 | Multilayered thermoplastic article with special properties 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 diff... | 10/27/1998 |
| 5824288 | Thio-substituted pyridines as MRI ligand precursors Novel precursors of ligands or use in MRI contrast agents and which have the formula ##STR1## wherein R2-R.sub.10 are defined herein.... | 10/20/1998 |
| 5820851 | Tripodal pyridine ligands as MRI contrast agents A composition of matter having the following ##STR1## wherein R, R1 -R10 and M are defined herein.... | 10/13/1998 |
| 5814711 | Polymerization medium to prepare multi-block copolymers 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-pyrrolidin... | 09/29/1998 |
| 5808067 | Process for preparing pyridine and quinoline derivatives The present invention pertains to a method of preparing substituted and unsubstituted N-hydroxy-2-aminobutane diacid derivatives which can be dehydrated to 2-aminobut-2-ene dioic acid derivatives, which can be subsequently converted to pyridine and quinol... | 09/15/1998 |
| 5798432 | Method of making thermotropic liquid crystalline polymers containing hydroquinone 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 ... | 08/25/1998 |
| 5789624 | Synthesis of and hydroformylation with fluoro-substituted bidentate phosphine ligands Hydroformylation of alkenes to aldehydes in the presence of a rhodium complex catalyst is improved by the addition of a novel bidentate ligand of the formula ##STR1## wherein R1, R2, R1 ' and R2 ' are organ... | 08/04/1998 |
| 5783731 | Removal of carbonyl impurities from a carbonylation process stream A process to reduce carbonyl impurities in a carbonylation reaction for the production of acetic acid is described. The methyl iodide recycle stream which is directed to a carbonylation reactor for carbonylating methanol or methyl acetate to acetic acid, ... | 07/21/1998 |
| 5779847 | Process for high performance, permeable fibrous structure A novel, high performance yet permeable, tough, fibrous structure, and a process for making the structure are disclosed. The fibrous structure includes a stabilized microstructure of improved uniformity of fiber and particulate distribution. Beneficially,... | 07/14/1998 |
| 5777129 | Hyperbranched polymers The present invention provides novel highly branched macromolecule polymers that have highly controlled molecular architectures, and having the formula: ##STR1## wherein R4, R5, and R6 are defined herein.... | 07/07/1998 |
| 5773591 | Process for preparing coumarin sulfonates 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 photores... | 06/30/1998 |
| 5772949 | Thermally expandable, viscosity modified wax compositions and method of use in actuators 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. Optional... | 06/30/1998 |
| 5773144 | Rubber-polyester composites including a functionally terminated copolyester 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 compat... | 06/30/1998 |
| 5762830 | Electronically and thermally conducting compositions for actuators This invention discloses a thermally expandable composition for use in actuators. The composition contains about 10-50 volume percent hollow glass spheres in a wax or a polymer. The spheres contain a conducting coating affixed thereon. During use in an ac... | 06/09/1998 |
| 5763608 | Process for preparing pyrimidine derivatives The present invention provides a process for preparing a 5,6-dihydro-3H-pyrimidin-4-one derivatives which comprises the steps of (a) dehydrating a N-acyl beta amino acid in the presence of a dehydration agent and an organic solvent for a sufficient period... | 06/09/1998 |
