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| Number | Title | Issue Date |
| 5877267 | Fluorine-containing polymers and preparation thereof A method for polymerizing fluorine-containing ethylenically-unsaturated monomer and allylic-hydrogen containing olefin monomer is provided. The method involves the use of fluoroaliphatic-group containing sulfinate. Novel polymers are also disclosed, compr... | 03/02/1999 |
| 5702637 | Liquid crystal compounds having a chiral fluorinated terminal portion Fluorine-containing, chiral liquid crystal compounds comprise (a) a chiral fluorochemical terminal portion containing at least one methylene group and optionally containing at least one catenary ether oxygen atom; (b) a saturated, chiral or achiral, hydro... | 12/30/1997 |
| 5702509 | Masonry treatment composition A self-emulsifying, liquid treatment composition comprises the polysiloxane reaction product of (a) at least one alkoxysilane, alkoxysiloxane, or siloxane compound comprising at least one hydrophobic moiety selected from the group consisting of alkyl, ary... | 12/30/1997 |
| 5658962 | Omega-hydrofluoroalkyl ethers, precursor carboxylic acids and derivatives thereof, and their preparation and application Normally liquid, omega-hydrofluoroalkyl ether compounds (and selected mixtures thereof) have a saturated perfluoroaliphatic chain of carbon atoms interrupted by one or more ether oxygen atoms. The compounds can be prepared, e.g., by decarboxylation of the... | 08/19/1997 |
| 5657516 | Dual structured fastener elements A fastener and a method of fastening articles employing the fastener are provided. The fastener includes a fastener element adapted to be mated in an interlocking arrangement to a complementary fastener element. The fastener element has a plurality of mat... | 08/19/1997 |
| 5648407 | Curable resin sols and fiber-reinforced composites derived therefrom Compositions comprise (a) a curable resin sol comprising a colloidal dispersion of substantially spherical, substantially inorganic microparticles (e.g., surface-modified silica) in curable resin (e.g., epoxy resin); and (b) reinforcing fibers (e.g., carb... | 07/15/1997 |
| 5643668 | Tape for rough surfaces A tape for adhering to rough surfaces in which an adhesive layer is adhered to a backing in a manner to allow discontinuities of adhesion between the backing and the adhesive layer. The backing is deformable and recoverable to form a generally smooth surf... | 07/01/1997 |
| 5623038 | Fluorine-containing polymers and preparation thereof A method for polymerizing fluorine-containing ethylenically-unsaturated monomer and allylic-hydrogen containing olefin monomer is provided. The method involves the use of fluoroaliphatic-group containing sulfinate. Novel polymers are also disclosed, compr... | 04/22/1997 |
| 5616794 | Process for preparing fluorocarboxylic acid halides A process for preparing fluorocarboxylic acid halides comprises the steps of (a) forming a starting composition comprising (i) at least one fluorosulfonic acid halide comprising at least one halosulfonyldifluoromethyl group (--Cf2 SO2 | 04/01/1997 |
| 5608003 | Aqueous fluorochemical compositions and abrasion-resistant coatings therefrom Water-based coating compositions comprise an aqueous solution, emulsion, or dispersion of (a) a water-soluble or water-dispersible polymer or oligomer having at least one anionic moiety which is capable of reacting with an oxazoline or oxazine moiety; (b)... | 03/04/1997 |
| 5589246 | Heat-activatable adhesive article A heat-activatable adhesive article is provided. The article, preferably a tape, includes a substantially laterally stable heat recoverable carrier film having at least one surface comprising a recessed surface portion and a raised surface portion therein... | 12/31/1996 |
| 5550273 | Process for preparing fluorocarbon fluoroalkanesulfonates A process for preparing fluorocarbon fluoroalkanesulfonates comprises (a) forming a mixture comprising at least one fluoroalkanesulfonyl halide, e.g., perfluoromethanesulfonyl fluoride, at least one fluorocarbon-substituted carbinol, e.g., 1,1-dihydr... | 08/27/1996 |
| 5541000 | Latent, thermal cure accelerators for epoxy-aromatic amine resins having lowered peak exotherms A thermally-curable aromatic amine-epoxy composition comprises (a) at least one polyepoxy compound; (b) a curing amount of at least one aromatic polyamine compound; and (c) a catalytically effective amount of at least one cure accelerator compound which is a π-ele... | 07/30/1996 |
| 5539008 | Foamable composition containing unsaturated perfluorochemical blowing agent Foamable compositions comprise (a) at least one normally liquid, unsaturated perfluorochemical blowing agent compound selected from the group consisting of perfluoroolefin compounds, e.g., perfluoro(4-methylpent-2-ene), perfluoroaromatic compounds, e.g., ... | 07/23/1996 |
| 5482650 | Liquid crystal compounds having perfluoroether terminal portions Fluorine-containing liquid crystal compounds comprise a fluorocarbon terminal portion having at least one catenary ether oxygen and a hydrocarbon terminal portion, the terminal portions being connected by a central core. The compounds have smectic or late... | 01/09/1996 |
| 5476974 | Omega-hydrofluoroalkyl ethers, precursor carboxylic acids and derivatives thereof, and their preparation and application Normally liquid, omega-hydrofluoroalkyl ether compounds (and selected mixtures thereof) have a saturated perfluoroaliphatic chain of carbon atoms interrupted by one or more ether oxygen atoms. The compounds can be prepared, e.g., by decarboxylation of the... | 12/19/1995 |
| 5474705 | Chiral liquid crystal compounds having a perfluoroether terminal portion Fluorine-containing, chiral liquid crystal compounds comprise (a) an aliphatic fluorocarbon terminal portion containing at least two catenary ether oxygen atoms; (b) a chiral, aliphatic hydrocarbon terminal portion; and (c) a central core connecting the t... | 12/12/1995 |
| 5466877 | Process for converting perfluorinated esters to perfluorinated acyl fluorides and/or ketones A process for converting perfluorinated carboxylic acid esters to perfluorinated acyl fluorides and/or perfluorinated ketones comprises the step of combining at least one perfluorinated carboxylic acid ester with at least one initiating reagent selected f... | 11/14/1995 |
| 5427656 | Process for preparing branched perfluorochemicals A process for preparing inert or functional, tertiary carbon-containing perfluorochemicals comprises the step of electrochemically fluorinating, in the presence of anhydrous hydrogen fluoride, a composition comprising at least one starting compound select... | 06/27/1995 |
| 5417883 | Process for controlling layer spacing in mixtures of smectic liquid crystal compounds A process for controlling layer spacing in mixtures of smectic liquid crystal compounds comprises the step of combining a liquid crystal composition having a net negative thermal layer expansion in at least one tilted (or latent tilted) smectic mesophase ... | 05/23/1995 |
| 5399718 | Direct fluorination process for making perfluorinated organic substances A liquid phase process for making perfluorinated organic substances which comprises directly contacting in a temperature-controlled reactor a diluted solution or dispersion of a perfluorinateable, organic substance in a liquid, inert medium with a stoichi... | 03/21/1995 |
| 5399291 | Liquid crystal compounds having a fluoroether terminal portion Fluorine-containing, chiral and achiral liquid crystal compounds comprise (a) an aliphatic fluorocarbon terminal portion comprising a perfluorinated or partially-fluorinated alkylene group and a terminal hydrocarbon alkyl group, the groups optionally cont... | 03/21/1995 |
| 5395486 | Dehydration process Dehydrated compositions are obtained by: combining a hydrous composition, e.g., a hydrous electrolyte salt, with inert fluorochemical liquid; heating the resulting mixture in a vessel to volatilize water and inert fluorochemical liquid therein until the w... | 03/07/1995 |
| 5387323 | Process for preparing fluorochemicals A process for preparing fluorochemical compounds, e.g., perfluoroalkanes, perfluoroethers, and perfluoroalkyl tertiary amines, comprises (a) forming a mixture comprising at least one fluorinatable, non-functional organic starting compound, e.g., propane, and a... | 02/07/1995 |
| 5362919 | Direct fluorination process for making perfluorinated organic substances A liquid phase process for making perfluorinated organic substances which comprises directly contacting in a temperature-controlled reactor a diluted solution or dispersion of a perfluorinateable, organic substance in a liquid, inert medium with a stoichi... | 11/08/1994 |
| 5362554 | High temperature label An article suitable for use in bonding to metal, glass, or ceramic substrates at high temperatures, e.g., above about 400° C, comprises (a) a thermally stable backing material, such as a metal foil or an inorganic fabric; and (b) a coating on at least a ... | 11/08/1994 |
| 5352785 | Continuous process for purifying perfluorochemical compositions A process for the purification of a perfluorochemical composition comprises continuously mixing the perfluorochemical composition, comprising a liquid mixture of inert perfluorochemicals (e.g., perfluoroalkanes, perfluoroethers, perfluoroaminoethers, or p... | 10/04/1994 |
| 5322597 | Bipolar flow cell and process for electrochemical fluorination An electrochemical fluorination process comprises passing by forced convection a liquid mixture comprising anhydrous hydrogen fluoride and fluorinatable organic compound, e.g., tripropyl amine, at a temperature and pressure at which a substantially contin... | 06/21/1994 |
| 5318674 | Process for preparing perfluoroalkanesulfonyl fluorides A process for preparing perfluoroalkanesulfonyl fluorides, e.g., perfluoromethanesulfonyl fluoride, comprises electrochemically fluorinating in the presence of anhydrous hydrogen fluoride at least one precursor compound selected from the group consisting ... | 06/07/1994 |
| 5254774 | Preparation of hexafluoropropene oligomers A process for the oligomerization of hexafluoropropene comprises contacting hexafluoropropene with a catalyst or a mixture of catalysts selected from the group consisting of the cyanide, cyanate, and thiocyanate salts of alkali metals, quaternary ammonium... | 10/19/1993 |
