Abstract: "Living" polymers and their preparation in the absence of a co-catalyst at a pressure greater than about 50 MPa, from polar acrylic or maleimide monomers and organosilicon, -tin or -germanium initiators.
Abstract: Partially fluorinated polyesters are disclosed having increased biodegradability and water repellency. The incorporation of an ester group into the backbone of the partially fluorinated compound permits modification of the compound's physical properties.
Abstract: A composition that exhibits low tendency to foul mold cavities comprising a fluoroelastomer of vinylidene fluoride units and units of at least one other fluorine-containing monomer copolymerizable with vinylidene fluoride; a bisphenol or a polyhydroxy phenol crosslinking agent of the formula ##STR1## where R is H, alkyl or aryl and R' is alkyl or aryl; a divalent metal oxide or hydroxide; and 0.2-4 parts by weight per 100 parts by weight fluoroelastomer of a crosslinking accelerator which is a quaternary ammonium salt of the formula R".sub.4 N.sup.+ X.sup.- wherein each R" is independently an alkyl group of 2-10 carbon atoms or an aralkyl group of 7-10 carbon atoms and X.sup.- is selected from the group consisting of fluoride, dihydrogen phosphate, periodate, acetate, hydrogen sulfate, methane sulfonate, toluene sulfonate, or an anion of a bisphenol or a polyhydroxy phenol.
Abstract: A process is provided for preparing a 7-oxabicycloheptane amino alcohol intermediate of the general structure ##STR1## (wherein the above structures represents (D) or (L) isomers)which is useful in preparing thromboxane A.sub.2 receptor antagonists. This intermediate is prepared by reacting mesanhydride with an aryl amine ##STR2## wherein R is alkyl, CH.sub.2 OH, CO.sub.2 H or CO.sub.2 alkyl, to form the acid ##STR3## which is reduced by treatment with lithium aluminum hydride or diisobutylaluminum hydride or Red-Al to form the alcohol ##STR4## wherein R.sup.1 is CH.sub.2 OH when R is CO.sub.2 H, CO.sub.2 alkyl or CH.sub.2 OH, and R.sup.1 is alkyl when R is alkyl; where in the above alcohol R.sup.1 is CH.sub.2 OH, such alcohol compound is treated with an alkyl chloroformate in the presence of base such as an alkali metal alkoxide to form the alcohol ##STR5## which undergoes cleavage by treatment with alkali metal, ammonia and acid to form the amino alcohol intermediate.Where in the above alcohol R.sup.
Abstract: A layered yarn package is formed of continuous filament yarn wads wherein the yarn alternates between compacted an extended lengths by axially compacting the yarn into a length, segmenting the length into alternating extended and compacted lengths then arranging the compacted lengths in a common axial direction one next to the other to form a layer. The layer may be compressed. One or more layers may form the package.
Type:
Grant
Filed:
March 6, 1989
Date of Patent:
September 18, 1990
Assignee:
E. I. du Pont de Nemours and Company
Inventors:
Joseph E. Koskol, Robert J. Santucci, Louis G. Rosanio, Jr.
Abstract: A pipe-end protector depending on its being used as a cap or plug comprises a metal housing with a sleeve-like, elastomer inset or a metal plug with a sleeve-like, elastomer cover. To increase the strength of the protector, the metal housing or the metal plug --which always are tubular--are provided at their outer end with a flanged or folded, preferably rolled edge. To facilitate manufacture of the protector, the inset or the cover may consist of at least two part-cylindrical mating case-components.
Type:
Grant
Filed:
June 29, 1988
Date of Patent:
September 18, 1990
Assignees:
Wilfried Dreyfuss, Thomas E. Remp
Inventors:
Wilfried Dreyfuss, Thomas E. Remp, Kurt Muller
Abstract: The present invention involves a system and method for preparing cream liqueur products having improved emulsion stability and products thereof. The method comprises the steps of preparing a spirits premix by combining spirits, a carbohydrate, and water, and preferably including flavoring and colorant; preparing a protein premix by dissolving citric acid or a salt thereof and caseinate in water; thoroughly mixing the protein premix with cream, preferably double cream; thereafter preparing a product mixture by mixing the spirit premix with the mixture of cream and the protein premix; and homogenizing the product mixture so that the average particle size is reduced to less than 5 microns, preferably less than 2 microns.
Type:
Grant
Filed:
November 9, 1987
Date of Patent:
September 18, 1990
Assignee:
Joseph E. Seagram & Sons, Inc.
Inventors:
Craig C. Widmar, Dale Tripp, Vincent G. Ficca
Abstract: The present invention concerns an aqueous processible solid photosensitive composition for making relief plates comprising(a) an addition photopolymerizable ethylenically unsaturated monomer;(b) a photoinitiator or photoinitiating system activated by actinic light; and(c) a core shell microgel binder; wherein the core shell microgel binder has two domains, a core having less than 10% crosslinking and an aqueous processible non-crosslinked outer shell consisting of an acid-modified copolymer, and further wherein the monomer partitions in the shell of the microgel. The invention also concerns a photosensitive element containing this composition.
Type:
Grant
Filed:
August 30, 1988
Date of Patent:
September 11, 1990
Assignee:
E. I. duPont de Nemours and Company
Inventors:
Michael Fryd, Ernst Leberzammer, S. Andries R. Sebastian
Abstract: The stop apparatus fits into the bore of a collet and incorporates a sleeve which is expanded in diameter to lock the apparatus in place. The stop face is the end of a cylindrical rod which slides in a bore in the body of the apparatus and is held at a desired position by a set screw. The body is a body of revolution with a bore for accepting the rod and an outer surface comprising a flange at one end, a cylindrical portion, a threaded portion and a knurled portion at the other end. The flange has a conical surface facing the cylindrical portion. The cylindrical portion is surrounded by a split, resilient sleeve held in place by a nut threaded onto the threaded portion. The nut has a conical surface also facing the cylindrical portion. The conical surfaces engage chamfers at the ends of the internal surface of the sleeve so that turning the nut on the body toward and away from the flange causes the sleeve to expand or allows it to contract.
Abstract: Ortho-Sulfonamide benzenesulfonylureas, such as N-cyclopropyl-N'-[(4,6-dimethoxypyrimidin-2-yl)aminocarbonyl]-1,2-benzened isulfonamide, are useful as pre-emergent and post-emergent herbicides.
Abstract: A hollow fiber with a plurality of members projecting from its outer surface in an arc turned back on itself is formed from a spinneret having a segmented orifice wherein each segment comprises a first portion in the form of an arc curved about the center of the orifice, a second portion extending from the first and connected to a third portion which is in the form of a reverse curve with respect to the first.
Abstract: A waterbased coating composition containing about 10-30% by weight of film forming binder dispersed in an aqueous carrier; wherein the binder contains abouta. 60-90% by weight, based on the weight of the binder, of a methylol (meth)acrylamide acrylic polymer of polymerized monomers of alkyl methacrylate, alkyl acrylate or mixtures thereof, 1-10% by weight, based on the weight of the acrylic polymer, of methylol methacrylamide, methylol acrylamide or mixtures thereof, 0.5-10% by weight, based on the weight of the acrylic polymer, of an ethylenically unsaturated carboxylic acid, 0.5-10% by weight, based on the weight of the acrylic polymer, of an ethylenically unsaturated hydroxyl containing monomer and the acrylic polymer has a glass transition temperature of -40.degree. to +40.degree. C. and a weight average molecular weight of 500,000 to 3,000,000; and the carboxyl groups of the carboxylic acid are reacted with ammonia to provide a pH to the composition of about 7.0-10.0;b.
Type:
Grant
Filed:
September 5, 1989
Date of Patent:
September 4, 1990
Assignee:
E. I. du Pont de Nemours and Company
Inventors:
Herman C. Den Hartog, Eileen E. Konsza, James F. Matthews, Ervin R. Werner, Jr.
Abstract: Process and apparatus are provided to distribute specified, premixed quantities of dry mortar mix and cement to a construction site. Bulk bags and a hopper apparatus are transported to the construction site and utilized with a forklift and a mixer device. The hopper apparatus is adjustably assembled and is constructed and arranged to be hand operable to efficiently meter homogeneous predetermined quantities of the mixture out of a discharge chute. The premixed contents in the bulk bags are dumped into the hopper apparatus and discharged in metered quantities into the mixer device. A water dispensing structure is provided to discharge a predetermined volume into the mixer device to form mortar or concrete for use.
Type:
Grant
Filed:
December 16, 1988
Date of Patent:
September 4, 1990
Assignee:
E-Con-Mega Mix
Inventors:
Robert C. Tousignant, James W. Tousignant, Richard L. Tousignant
Abstract: An apparatus and method for repairing cracks and chips in automobile windshields provides an injector that heats repair chemical prior to inserting the repair chemical into the crack and also heats the windshield prior to inserting the repair chemical into the crack.
Abstract: A land and water transportable apparatus positionable in a body of water for extracting energy from wave action in the body of water, is disclosed, comprising a wheel-shaped float positionable on the surface of the body of water operable by wave action, a wheel-shaped anchor for positioning on the bottom of the body of water for anchoring the float, a spacer disposed between the float and the anchor for securing the float to the anchor when the apparatus is transported to a deployment site, a spacer for securing the float to the anchor when the float is separated from the anchor, and an accumulator associated with the float for converting wave action energy to useful work.
Abstract: A thick film conductor composition suitable for use for electrodes in multilayer capacitors comprising (a) finely divided particles of electrically conductive metal, metal oxide precursors or alloys of the conductive metals, or mixtures thereof, dispersed in (b) an organic medium comprising(1) an organometallic compound, the metal or metal oxide moiety of which is insoluble in the electrically conductive metal and/or the oxide(s) of the metal moiety are non-reducing in the presence of the electrically conductive metal, the organometallic compound being dissolved in;(2) a solution of polymeric binder and volatilizable solvent.
Abstract: Novel aqueous titanium compositions comprising mixtures of at least two titanium compounds, at least one of which effects cross-linking of hydroxyl-containing materials more rapidly than at least one other titanium compound; the use of such organic titanium compositions in a novel process for hydraulically fracturing oil- and/or gas-containing subterranean formations; and aqueous compositions useful in such a process.
Abstract: A process for preparing hydrogen fluoride involving treating anhydrous hydrogen fluoride containing primarily trivalent arsenic impurities with an effective amount of chromium (VI) oxide (i.e., CrO.sub.3) and oxygen such as to oxidize substantially all of the trivalent arsenic to pentavalent arsenic (i.e., As.sup.+3 .fwdarw.As.sup.+5) followed by separation and recovery (e.g., by distillation) of purified anhydrous hydrogen fluoride.