| Patent Number |
Title Of Patent |
Date Issued |
| RE34349 |
Method for the manufacture of 1,3-propanediol |
August 17, 1993 |
| 1,3-Propanediol is manufactured by the hydration of acrolein in an aqueous solution over a fully hydrated, alumina-bound zeolite with a pore size >5 angstroms to form 3-hydroxypropanal and hydrogenation of the 3-hydroxypropanal typically in an aqueous solution in the presence of a |
| RE34122 |
Hot melt adhesives containing poly(p-hydroxystyrene) homopolymers and copolymers and bonding met |
November 10, 1992 |
| A hot melt adhesive composition which is especially useful for bonding polyamide article to surfaces, particularly polyamide surfaces. The composition contains an ethylene-vinyl ester copolymer or a polyamide polymer, and additionally contains a poly(p-hydroxystyrene) homopolymer or |
| H1760 |
Process for glycol esters of an alkali metal salt of 5-sulfoisophthalic acid |
November 3, 1998 |
| A process for preparing bis alkylene glycol esters of an alkali metal salt of 5-sulfoisophthalic acid. The subject compound is useful in preparing modified polyesters which can be dyed with basic or cationic dyes. The process is economical and low cost since intermediate reaction product |
| 6312772 |
Multilayer laminate formed from a substantially stretched non-molten wholly aromatic liquid crys |
November 6, 2001 |
| Multilayer laminates including films, sheets, preforms, containers and other articles having at least one wholly aromatic, amorphous, stretchable liquid crystalline polymer layer with at least one non-polyester thermoplastic polymer layer are provided as well as methods for producing |
| 6268026 |
Multilayer laminate formed from a substantially stretched non-molten wholly aromatic liquid crys |
July 31, 2001 |
| Multilayer laminates including films, sheets, preforms, containers and other articles having at least one wholly aromatic, amorphous, stretchable liquid crystalline polymer layer with at least one non-liquid crystalline thermoplastic polyester layer are provided as well as methods for |
| 6258884 |
Polymeric acetals resistant to mineral deposition |
July 10, 2001 |
| 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 water containing dissolved minerals |
| 6127028 |
Composite yarn comprising filled cut-resistant fiber |
October 3, 2000 |
| 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 |
| 6103372 |
Filled cut-resistant fiber |
August 15, 2000 |
| 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 |
| 6090973 |
Polyester toner composition for electrophotographic imaging systems |
July 18, 2000 |
| This invention provides a free-flowing polyester dye powder which has superior stability and transparency for application in electro-photographic imaging systems. In another embodiment this invention provides novel chromophoric diester monomers which are reacted with diol monomers to |
| 6090888 |
Cyclic olefin polymer blends exhibiting improved impact resistance and good transparency |
July 18, 2000 |
| 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 properties, making them ideal |
| 6090516 |
Polyester toner composition for electrophotographic imaging systems |
July 18, 2000 |
| This invention provides a free-flowing polyester dye powder which has superior stability and transparency for application in electrophotographic imaging systems. In another embodiment this invention provides novel chromophoric diester monomers which are reacted with diol monomers to form |
| 6080474 |
Polymeric articles having improved cut-resistance |
June 27, 2000 |
| A polymeric article having improved cut-resistance is composed of (A) an initial polymeric article having cut-resistant properties; and (B) a cut-resistant elastomeric coating disposed on an outer surface of the initial polymeric article, wherein the elastomeric coating is composed of |
| 6020414 |
Method and compositions for toughening polyester resins |
February 1, 2000 |
| 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-polymer and ethylene alkyl metha |
| 6015524 |
Adhesives for making multilayer films comprising liquid crystalline polymers and polyethylene |
January 18, 2000 |
| Multilayer films that include a thermotropic liquid crystalline polymer film layer and a polyethylene film layer are bound together using one of the following hot melt adhesives: ethylene-glycidyl methacrylate copolymer, ethylene-methyl acrylate-glycidyl methacrylate terpolymer, ethy |
| 6013373 |
Adhesives for making multilayer films comprising liquid crystalline polymer and polypropylene |
January 11, 2000 |
| Multilayer films that include a thermotropic liquid crystalline polymer film layer and a polypropyene film layer are bound together using hot melt adhesives which may be either (1) a blend of poly(.alpha.-olefins), comprised of isotactic polypropylene, a polymer of a second lower pol |
| 6001980 |
Polyester toner composition for electrophotographic imaging systems |
December 14, 1999 |
| This invention provides a free-flowing polyester dye powder which has superior stability and transparency for application in electro-photographic imaging systems. In another embodiment this invention provides novel chromophoric diester monomers which are reacted with diol monomers to |
| 5976998 |
Cut resistant non-woven fabrics |
November 2, 1999 |
| 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 |
| 5972477 |
Laminated fiber networks |
October 26, 1999 |
| Laminated fiber network structures having high resilience, good cushioning properties, and excellent impact-resistance include at least one layer of a three-dimensional fiber network material and a second layer, which may be a planar material (e.g. a fabric, film, or sheet) or a second l |
| 5965273 |
Polymeric compositions having a temperature-stable dielectric constant |
October 12, 1999 |
| A polymeric composition which has a dielectric constant K' greater than 4 at 20.degree. 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 dielectric constant K' in |
| 5962122 |
Liquid crystalline polymer composites having high dielectric constant |
October 5, 1999 |
| 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 least about 4, and preferably at |
| 5925710 |
Infrared absorbing polyester packaging polymer |
July 20, 1999 |
| 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 .mu.m. As an upper limit, however, any particle size which is not visible |
| 5919889 |
Melt processable poly(ester-amide) capable of forming an anisotropic melt containing an aromatic |
July 6, 1999 |
| 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 moiety, (d) terephthaloyl moi |
| 5897950 |
Fibrous additive for asphalt paving compositions |
April 27, 1999 |
| The present invention describes a fiber material for use in mastic asphalt in roadbuilding for stabilizing the binder during transport, storage and incorporation, said fiber material being a macromolecular product including at least 95% of polyethylene terephthalate, the diameter of the |
| 5896680 |
Shoes comprising three-dimensional formed fiber product |
April 27, 1999 |
| 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 rising from the plane of the fabric. |
| 5886066 |
Thermoplastic polymer composition exhibiting improved wear |
March 23, 1999 |
| A low wear polymeric composition exhibiting improved surface wear resistance and coefficients of friction characterized as a melt blend of a thermoplastic polymer and a lubricating system containing PTFE, pentaerythritol tetrastearate and fine particle, stearate coated calcium carbon |
| 5885668 |
Process for surface modification of an LCP film |
March 23, 1999 |
| 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, (c) applying pressure to the he |
| 5882322 |
Medical casts and other orthopedic devices comprising thermoplastic three-dimensional fiber netw |
March 16, 1999 |
| 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 optional depressions which are |
| 5881201 |
Backlighting lightpipes for display applications |
March 9, 1999 |
| 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 containing scattering centers |
| 5876570 |
Purification process for cyclic formals |
March 2, 1999 |
| 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 purity which contains only a very sma |
| 5874517 |
Method to reduce regenerated acetaldehyde in pet resin |
February 23, 1999 |
| There is disclosed a process for reducing the amount of acetaldehyde generated when polyethylene terephthalate (PET) chip is subjected to high temperatures in order to render the PET chip suitable for making food containers, particularly beverage bottles. This process comprises the a |
| 5874515 |
Method to reduce gel formation in pet resin |
February 23, 1999 |
| There is disclosed a process for reducing the number of gels generated in polyethylene terephthalate (PET) resin. Gels are crosslinked polymers created by thermal and thermo-oxidative degradation induced during polymer production. The instant process comprises the addition of primary and |
| 5869025 |
Tripodal aromatic heterocycle carboxamide MRI contrast agents |
February 9, 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. |
| 5863622 |
Polarizer laminates comprising coextruded liquid crystal polymer moieties and integral thermopla |
January 26, 1999 |
| This invention discloses laminates comprising dyed liquid crystalline polymer based polarizers in the middle with a non-peelable, non-liquid crystalline polymeric cover layers, prepared by a process of coextrusion. The laminates are suitable to prepare liquid crystal display devices |
| 5858329 |
MRI diagnostic procedures using tripodal pyridinyl metal complexes |
January 12, 1999 |
| A method of performing an NMR diagnostic procedure in a patient in need of the same comprising administering to the patient an effective amount of an NMR diagnostic medium and then exposing the patient to an NMR measurement step to which the diagnostic medium is responsive thereby imagin |
| 5851423 |
Liquid crystal display devices incorporating polarizers comprising liquid crystal polymers |
December 22, 1998 |
| This invention discloses novel liquid crystal display devices containing polarizers which comprise a liquid crystal polymer and a dichroic absorber. Also disclosed is a process to construct the liquid crystal display devices. |
| 5843562 |
LCP films having roughened surface and process therefor |
December 1, 1998 |
| A film having a roughened surface. The film is made of an LCP and has surface recessions covering at least about 25% of the area of the surface. The film is made by pressing an embossing means against the film surface at a temperature about 15.degree.-75.degree. C. below the melting poin |
| 5837872 |
Process for preparation of N-acyl-aminodiacids |
November 17, 1998 |
| This invention relates to an improved process for preparing selected N-acyl-aminodiacids such as lauroyl glutamic acid. |
| 5824767 |
Poly(arylene sulfide) compositions having improved processability |
October 20, 1998 |
| A process for improving the processability of poly(arylene sulfide) in melt spinning operations by treatment with a barium-containing compound and, optionally, a lubricant is disclosed. |
| 5824288 |
Thio-substituted pyridines as MRI ligand precursors |
October 20, 1998 |
| Novel precursors of ligands or use in MRI contrast agents and which have the formula ##STR1## wherein R.sub.2-R.sub.10 are defined herein. |
| 5820851 |
Tripodal pyridine ligands as MRI contrast agents |
October 13, 1998 |
| A composition of matter having the following ##STR1## wherein R, R.sub.1 -R.sub.10 and M are defined herein. |
| 5808067 |
Process for preparing pyridine and quinoline derivatives |
September 15, 1998 |
| 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 quinoline derivatives. |
| 5789624 |
Synthesis of and hydroformylation with fluoro-substituted bidentate phosphine ligands |
August 4, 1998 |
| 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 R.sub.1, R.sub.2, R.sub.1 ' and R.sub.2 ' are organic radicals selected from alicyclic, aliphatic and aro |
| 5789042 |
Thin LCP film process |
August 4, 1998 |
| A process for producing LCP films that have improved tear resistance, improved balance of physical properties, and relatively wrinkle-free surfaces. An annular co-extrusion die is used to line the LCP with one or more surface layers of a nonadherent polymer before the LCP becomes shear |
| 5783731 |
Removal of carbonyl impurities from a carbonylation process stream |
July 21, 1998 |
| 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, is treated to remove carbonyl imp |
| 5783624 |
Transparent polymer composites having a low thermal expansion coefficient |
July 21, 1998 |
| Polymeric compositions having a high transparency, low thermal expansion coefficient and low coefficient of refractive index change with temperature are made from a suitable thermoplastic polymer and index-matched glass or ceramic. Such compositions have utility in optical applicatio |
| 5779847 |
Process for high performance, permeable fibrous structure |
July 14, 1998 |
| 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, the fibrous structure is of |
| 5776838 |
Ballistic fabric |
July 7, 1998 |
| In a ballistic fabric, the use of plurality of bicomponent fibers; the ballistic fabric is made from a plurality of bicomponent fibers and a plurality of high strength fibers. The bicomponent fibers have a sheath and a core, the sheath being made of a polymer having a melting point and |
| 5767294 |
Process for the production of trioxane from formaldehyde |
June 16, 1998 |
| A process for the trimerization of aqueous formaldehyde solution to produce trioxane in a multistage in situ catalyst reactor-extractor column containing a cationic exchange resin. The process entails countercurrent flow of formaldehyde solution and solvent across reactor and extractor |
| 5763608 |
Process for preparing pyrimidine derivatives |
June 9, 1998 |
| 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 of time and under suitable t |
| 5762830 |
Electronically and thermally conducting compositions for actuators |
June 9, 1998 |
| 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 actuator, the composition is he |
