Ether Compound Dnrm, E.g., Aryl Ether, Dimethylether, Etc. Patents (Class 524/755)
  • Patent number: 4981893
    Abstract: Compounds corresponding to the following formulaR.sub.1 --(CH.sub.2).sub.m --O--(CH.sub.2 CH.sub.2).sub.n --R.sub.2in which R.sub.1 is the phenyl radical or a phenyl radical which is substituted by linear or branched alkyl radicals containing a total of from 1 to 18 carbon atoms, R.sub.2 is a C.sub.4 -C.sub.8 alkyl radical, m=0 or 1 and n=3 to 30, are used as dispersants with foam-inhibiting properties in aqueous polymer dispersions and latices.
    Type: Grant
    Filed: December 21, 1987
    Date of Patent: January 1, 1991
    Assignee: Henkel Kommanditgesellschaft auf Aktien
    Inventors: Rainer Hoefer, Karl-Heinz Schmid, Adolf Asbeck, Uwe Held
  • Patent number: 4933413
    Abstract: Organosilicon compounds containing at least one acylamino-substituted hydrocarbon radical are prepared by reacting an organohydroxysilicon compound containing at least one silicon-bonded hydroxy radical with a base to yield a silanolate. The silanolate is reacted with a cyclic aminosilane compound to form a siloxyalkylamide that is then reacted with an acyl chloride to give the desired product. All reactions can be carried out in a single reaction vessel using a nonaqueous solvent.
    Type: Grant
    Filed: April 10, 1989
    Date of Patent: June 12, 1990
    Assignee: Dow Corning Corporation
    Inventor: Sudarsanan Varaprath
  • Patent number: 4931483
    Abstract: Polymer/polyol compositions, obtained by polymerizing, in situ in a polyol, one or more ethylenically unsaturated monomers comprising an alpha-olefin containing at least 5 carbon atoms and/or an acrylate or methacrylate ester of an alcohol containing at least 9 carbon atoms, which are of relatively low viscosity and which afford polyurethanes having improved properties.
    Type: Grant
    Filed: December 5, 1988
    Date of Patent: June 5, 1990
    Assignee: Sanyo Chemical Industries, Ltd.
    Inventors: Masahiro Matsuoka, Keiichi Akimoto, Takeshi Sumita, Tsuyoshi Tomosada, Isao Ishikawa
  • Patent number: 4920199
    Abstract: Coating compositions comprise a clear, homogeneous binder mixture of polyether or polyester polymer, an amine-formaldehyde condensate resin, and an organic solvent; the mixture being miscible with water to application viscosity. The coating composition typically contains suspended solid particulates, including pigments and metal flakes.
    Type: Grant
    Filed: November 10, 1988
    Date of Patent: April 24, 1990
    Assignee: Bee Chemical Company
    Inventors: Richard E. Jarzombek, Raymond J. Moeller, Jr., Merrill L. Pruitt
  • Patent number: 4906723
    Abstract: A method is described for producing dispersions of polyurea and the like in polyols of increased stability by polymerizing an amine and an isocyanate in the presence of an aminoalcohol, typically an aminopolyol, having the following formula: ##STR1## wherein A and A' are individually connective atoms which may be same or different, and are selected from the group consisting of carbon and oxygen or combinations thereof with hydrogen atoms or the like satisfying the valences; B is a member selected from the group consisting of nitrogen, NR, R being alkyl or aryl, or CR', R' being hydrogen, alkyl or aryl; D is a member selected from the group consisting of ##STR2## wherein a has a value of one to four; X is a member selected from the group consisting of OH, NH.sub.
    Type: Grant
    Filed: November 28, 1988
    Date of Patent: March 6, 1990
    Assignee: Union Carbide Chemicals and Plastics Company Inc.
    Inventors: Kenneth L. Hoy, Glenn A. Taylor, Chinsoo Lee
  • Patent number: 4894412
    Abstract: A process for preparing a self-crosslinkable aminosiloxane emulsion, comprising:dispersing by emulsification in water in the presence of a cationic surface active agent and a nonionic surface active agent:(A) a specific organosilicon compound that may have a hydroxyl group and/or an alkoxy group;(B) a specific organosilicon compound having a nitrogen-containing monovalent hydrocarbon group; and(C) a specific organosilane having a hydroxyl group and/or an alkoxy group, and or a partial hydrolysis-condensation product thereof;subsequently carrying out emulsion polymerization in the presence of an alkaline catalyst; andthereafter neutralizing the reaction product.The resulting emulsion is useful as softening agents, smoothing agents or feeling improver for all sorts of textiles, and binders between fibers.
    Type: Grant
    Filed: May 18, 1988
    Date of Patent: January 16, 1990
    Assignee: Shin-Etsu Chemical Co., Ltd.
    Inventors: Fumio Okada, Masaki Tanaka, Hiroshi Ohashi
  • Patent number: 4855348
    Abstract: A storage stable water-based paint comprising a solid silicone resin and an ammonium salt of a drying oil modified acrylic copolymer provide a coating for barbecue grills and other appliances that are subjected to temperatures as high as 1300.degree. F. A smooth and continuous coating remains on the metal after burning off of the acrylic resin and firing of the metal at 1300.degree. F. The paint is redispersible and may be drawn down to 1.5 mils after storage at 120.degree. F. for more than 3 months when the pH is at least about 8.
    Type: Grant
    Filed: July 14, 1988
    Date of Patent: August 8, 1989
    Assignee: DAP Inc.
    Inventor: Hartzel G. Strader
  • Patent number: 4845151
    Abstract: Adhesive compositions having improved stability and surface insensitivity are made from a blend of (a) a 2-cyanoacrylate ester adhesive, (b) a polyoxyalkylene glycol, glycol ester, or glycol ether, and (c) fumed silica having no surface treatment.
    Type: Grant
    Filed: April 7, 1988
    Date of Patent: July 4, 1989
    Assignee: Illinois Tool Works, Inc.
    Inventor: George T. Sivy
  • Patent number: 4826916
    Abstract: Polyimidesiloxane coating compositions resulting from the intercondensation in the presence of methylanisole of various dianhydrides such as 2,2-bis[4-(3,4-dicarboxyphenoxy)phenyl]-propane dianhydride or bis(phthalicanhydride)tetramethyldisiloxane, or mixtures thereof with organic diamine such as toluenediamine, aminoalkyl terminated polydimethylsiloxane or oxydianiline.
    Type: Grant
    Filed: February 27, 1987
    Date of Patent: May 2, 1989
    Assignee: General Electric Company
    Inventors: Peter P. Policastro, Pamela K. Hernandez, Jonathan D. Rich
  • Patent number: 4797964
    Abstract: Preparations for finishing textiles, more especially sheet-form textiles, based on emulsion polymers of vinyl acetate and/or copolymers thereof with dibutyl maleate containing protective colloids in addition to small quantities of standard auxiliaries, wherein the polymer emulsions contain as a protective colloid polyethylene glycol having an average molecular weight of from about 3000 to 50,000 which was at least partly present during the original emulsion polymerization.
    Type: Grant
    Filed: June 22, 1987
    Date of Patent: January 17, 1989
    Assignee: Henkel Kommanditgesellschaft auf Aktien
    Inventors: Wolfgang Ritter, Hans-Peter Handwerk, Kaspar Schlueter, Heinz Hassenjuergen
  • Patent number: 4792582
    Abstract: A method for emulsifying, emulsion-stabilizing, and/or foam-inhibiting an aqueous polymer dispersion or latex by incorporating therein a polyglycol ether; and a polymer dispersion or latex composition containing such polyglycol ether.
    Type: Grant
    Filed: August 11, 1986
    Date of Patent: December 20, 1988
    Assignee: Henkel Kommanditgesellschaft auf Aktien
    Inventors: Rainer Hoefer, Alfred Meffert, Robert Piorr, Bernd Wegemund, Uwe Held
  • Patent number: 4791029
    Abstract: Aqueous emulsions of crosslinkable polyaddition organopolysiloxane compositions, well adapted for the thin layer coating of flexible substrates to impart water-repellency and nonadherency thereto, comprise a first aqueous emulsion A including end-vinylated polysiloxanes, a vinylated cyclotrisiloxane, a hydroorganodiorganopolysiloxane, a polyvinyl alcohol and a polyalkylene glycol alkyl ether or alkylphenyl ether, and a second aqueous emulsion B which comprises a catalytically effective amount of a platinum group metal catalyst.
    Type: Grant
    Filed: June 24, 1987
    Date of Patent: December 13, 1988
    Assignee: Rhone-Poulenc Chimie
    Inventors: Alain Fau, Gerard Fillippi, Robert Violland
  • Patent number: 4775558
    Abstract: Polyurethanes which have been prepared or combined with another material are made by combining or applying a polyurethane-forming reaction mixture or polyurethane to another material such as a PVC foil or textile. The polyurethane-forming mixture or polyurethane is made up of an organic polyisocyanate, a high molecular weight isocyanate reactive material, a catalyst and a stabilizer against thermolysis and contact discoloration. The required stabilizer is an epoxide having an epoxide equivalent weight between 57 and 10,000. Other additives commonly used in polyurethane chemistry such as blowing agents, chain extenders and surfactants may also be employed. The polyurethane composites thus produced are characterized by improved thermal stability and reduced discoloration.
    Type: Grant
    Filed: September 17, 1987
    Date of Patent: October 4, 1988
    Assignee: Bayer Aktiengesellschaft
    Inventors: Peter Haas, Geza Avar
  • Patent number: 4758615
    Abstract: Polymers which contain urethane groups and are capable of being crosslinked by extraneous crosslinking agents, solutions thereof and aqueous dispersions thereof, prepared without the use of isocyanates by reacting polyamino compounds with polycarbonates and, if appropriate, reacting the reaction product further with polycarboxylic acids to give products having an acid number between 0 and 100, and, if appropriate, neutralizing the resulting products partly or completely by adding basic compounds, preferably organic bases, and, if appropriate, mixing the partly or completely neutralized products vigorously with an amount of water such that aqueous polymer dispersions having a solids content of up to 75% by weight, relative to the dispersion, are obtained.
    Type: Grant
    Filed: May 22, 1987
    Date of Patent: July 19, 1988
    Assignee: Hoechst AG
    Inventors: Dieter Engel, Christoph Just, Gerhard Brindopke, Gerd Walz
  • Patent number: 4708971
    Abstract: The process for preparing polyurethanes by the reaction of a bicyclic amide acetal and a polyisocyanate in the presence of a plasticizer such as dioctyl phthalate and a polyurethane catalyst such as stannous octoate is described.
    Type: Grant
    Filed: April 11, 1986
    Date of Patent: November 24, 1987
    Assignee: Ashland Oil, Inc.
    Inventors: Anil B. Goel, Timothy A. Tufts
  • Patent number: 4701511
    Abstract: There is provided a process for making diglyme soluble siloxane-imide copolymers consisting essentially of (a) heating a mixture of diglyme, azeotropic solvent, organic diamine and bis-aminoalkyl-terminated polydiorganosiloxane to reflux and (b) adding to the refluxing mixture of (a) an organic dianhydride of the formula ##STR1## where Ar is an aromatic or aromatic containing group and Y is oxygen or sulfur. Block copolymers are obtained if the bis-aminoalkyl-terminated polydiorganosiloxane is not added to the reaction mass until after the reaction of the organic diamine and organic dianhydride has been completed.
    Type: Grant
    Filed: October 19, 1984
    Date of Patent: October 20, 1987
    Assignee: General Electric Company
    Inventor: Vivian B. Valenty
  • Patent number: 4699964
    Abstract: An acrylic resin composition having excellent permanent antistatic properties, which comprises a copolymer of an acrylic monomer comprising predominantly methyl methacrylate with a specific sulfonate and optionally a specific alkylene oxide and/or acidic phosphate, and a method for the production thereof. The acrylic resin composition of the invention shows excellent antistatic properties without losing the excellent properties of methacrylic resin, such as excellent transparency, mechanical properties, heat resistance, etc., and is useful for various utilities, such as preparation of advertising display, lighting fixtures, covers, nameplate, and various decoratings.
    Type: Grant
    Filed: May 7, 1986
    Date of Patent: October 13, 1987
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Yasuyuki Kato, Masahiro Yuyama, Masahiko Moritani, Mikio Futagami
  • Patent number: 4670505
    Abstract: Disclosed are aqueous polyacrylate dispersions having improved rheological and stability characteristics prepared by the emulsion polymerization of acrylic esters, methacrylic esters and mixtures thereof in the presence of, by weight of the total monomer content, (a) from about 0.1 to 5% of at least one water-soluble amino alcohol compound and (b) from about 0.05 to about 5% of at least one protective colloid. The resultant aqueous polyacrylate dispersions are useful in the manufacture of latex paints, binders for nonwoven materials, water-based inks, paper coatings and water-borne adhesives, such as pressure-sensitive adhesives.
    Type: Grant
    Filed: August 23, 1985
    Date of Patent: June 2, 1987
    Assignee: Hercules Incorporated
    Inventor: Daniel H. Craig
  • Patent number: 4661550
    Abstract: A thermosetting solvent solution coating composition is disclosed in which a solution copolymer of copolymerized monomers consisting essentially of from 55% to 75% of vinyl acetate, from 15% to 40% of C.sub.2 -C.sub.8 alkyl acrylate or methacrylate, from 3% to 10% of C.sub.2 -C.sub.4 hydroxyalkyl acrylate or methacrylate, and from about 0.5% to about 5% of monoethylenically unsaturated copolymerizable carboxylic acid if formed by copolymerization in organic solvent solution medium consisting essentially of C.sub.1 -C.sub.8 alkoxy C.sub.2 -C.sub.4 alkanol at a solids content of at least about 75% and at an average temperature of from 95.degree. C. to 105.degree. C. at which reflux does not occur. This copolymer is used in admixture with from 8% to 20%, based on the mixture, of polyalkoxymethyl melamine in which a volatile alcohol provides the alkoxy groups.
    Type: Grant
    Filed: January 30, 1985
    Date of Patent: April 28, 1987
    Assignee: DeSoto, Inc.
    Inventor: Edwin A. Zychowski
  • Patent number: 4659772
    Abstract: Novel polyols, useful in, for example, reaction injection molding, high resiliency foams and the preparation of polymer/polyols, characterized by the following formula: ##STR1## wherein A and A', which may be the same or different, are connective atoms--carbon, oxygen or combinations thereof with hydrogen atoms or the like satisfying the valences; B is nitrogen (N) or CR, R being hydrogen, alkyl, aryl or the like; Q is 0, CH.sub.2 O, C.sub.2 H.sub.4 O, C.sub.3 H.sub.6 O, or C.sub.4 H.sub.8 O; D is an oxyalkylene or ##STR2## X and X', which may be the same or different, are OH, NH.sub.2 or H; Z is OH; n and d are integers of 0 to 10 and the sum of n and d does not exceed 10; s is 0 or 1, and m is an integer of at least about 16, with the proviso that when B is N and either n or d is zero, X and X' are other than H, provide processing advantages and are highly compatible with low molecular weight extenders such as ethylene glycol.
    Type: Grant
    Filed: December 12, 1985
    Date of Patent: April 21, 1987
    Assignee: Union Carbide Corporation
    Inventors: Kenneth L. Hoy, Glenn A. Taylor
  • Patent number: 4656199
    Abstract: The present invention is directed to a process for the production of matte, non-blocking, thin-walled molded articles, films or tubes from polyurethane elastomers prepared from high molecular weight polyols which contain dispersed polyadducts based on polyisocyanate polyaddition products. The use of these high molecular weight polyols contained dispersed polyadducts allows for the preparation of thin-walled, molded articles which have reduced surface tackiness. The present invention is additionally directed to the molded articles produced by this process and to their use for forming polyurethane foam composites.
    Type: Grant
    Filed: January 30, 1986
    Date of Patent: April 7, 1987
    Assignee: Bayer Aktiengesellschaft
    Inventors: Georg Niederdellmann, Wilhelm Goyert, Bernd Quiring, Hans Wagner
  • Patent number: 4590238
    Abstract: A high-solid self-adhesive having a solid content of 65 to 75% by weight and composed of an emulsion obtained by emulsion-copolymerizing a vinyl monomer mixture containing acrylate esters as the main ingredient and further at least one hydrophilic monomer of formula (A), (B) or (C). ##STR1## wherein R.sub.1 is H or COOH, R.sub.2 is H or CH.sub.3 and R.sub.3 is H or CH.sub.2 OH.A process for the production of the high-solid self-adhesive comprising successively adding a pre-emulsion obtained by previously mixing said vinyl monomer mixture, a surfactant mixture of a nonionic surfactant and an anionic surfactant and water, to the reaction system to carry out an emulsion copolymerization in the presence of a catalyst.
    Type: Grant
    Filed: February 10, 1984
    Date of Patent: May 20, 1986
    Assignee: Daicel Chemical Industries, Ltd.
    Inventors: Mitsuru Furomoto, Toshio Asano
  • Patent number: 4581402
    Abstract: The invention relates to stable water in oil dispersions, of hydrosoluble cationic polymers based on salified or quaternized dimethylaminoethyl acrylate copolymerized or not with acrylamide, and containing more than 5%(in moles) of cationic units uniformly and not statistically distributed along the chains, presenting a composition by weight of from 20 to 55% of polymers, from 20 to 45% of oil, from 1 to 5% of at least two emulsifying agents, and the balance to 100% being water, the oil phase being a mixture of normal C.sub.10 -C.sub.13 alkanes, one of the emulsifying agents having an HLB of 3 to 5, and good solubility in the oil phase, and a lipophilous group of a carbonated ramified chain of at least 16C and the other having an average HLB of 12 to 16, the percentages by weight of both agents being from 0.5 to 3% relative to the weight of the dispersion.
    Type: Grant
    Filed: February 3, 1983
    Date of Patent: April 8, 1986
    Assignee: Societe Francaise Hoechst
    Inventors: William Dunk, Jean Cabestany, Claude Trouve
  • Patent number: 4517328
    Abstract: Certain substituted diphenyl ethers improve the flowability of aromatic polyesters and polyester carbonates in the melt.
    Type: Grant
    Filed: March 6, 1984
    Date of Patent: May 14, 1985
    Assignee: Bayer Aktiengesellschaft
    Inventors: Manfred Schmidt, Dietrich Rathmann, Klaus Reinking
  • Patent number: 4505801
    Abstract: An overcoat composition for use in ion-selective electrodes comprises: (a) a discontinuous liquid phase comprising an oleophilic solvent dispersed within a continuous phase comprising a hydrophilic binder; (b) a complexing agent useful for extracting oleophilic anions; (c) a buffer which provides a pH in the range of from about 7.5 to about 9.5 under conditions of use; and (d) a nucleating agent. This overcoat composition is particularly useful in ion-selective electrodes for determination of CO.sub.2.
    Type: Grant
    Filed: January 10, 1984
    Date of Patent: March 19, 1985
    Assignee: Eastman Kodak Company
    Inventors: Richard L. Detwiler, Brooke P. Schlegel, Thomas R. Kissel
  • Patent number: 4477623
    Abstract: An improved paint composition comprises an aqueous dispersion of a water insoluble addition polymer formed substantially of monomers selected from the class consisting of styrene, acrylates, methacrylates, vinyl esters, and vinyl chloride; at least one anionic or non-ionic emulsifier; at least one polyoxyethylene-chain-containing compound with between 60 and 400 oxyethylene units; and a minor amount of at least one alkali-soluble addition polymer. The emulsifier may itself be a polyoxyethylene-chain-containing compound. The unsaturated monomers comprising the water insoluble addition polymer include at least one monomer containing a phosphoric acid, sulphonic acid, or carboxylic acid group or a group functioning as an emulsifier.
    Type: Grant
    Filed: January 27, 1983
    Date of Patent: October 16, 1984
    Assignee: Syrnes International B.V.
    Inventors: Dick A. Pons, Anno Bijker
  • Patent number: 4459384
    Abstract: Described herein is a process for preparing a polyester or a poly(ester carbonate) which comprises reacting a dihydric phenol with an aromatic diacid and a diaryl carbonate in the presence of from about 10 to about 60 weight percent of a processing aid under polyester or poly(ester carbonate) forming conditions.
    Type: Grant
    Filed: April 18, 1983
    Date of Patent: July 10, 1984
    Assignee: Union Carbide Corporation
    Inventors: Markus Matzner, Louis M. Maresca
  • Patent number: 4439589
    Abstract: A process for the preparation of copolymers of styrene and/or its derivatives by polymerization of one or more aromatic monovinyl compounds and acrylonitrile and/or methacrylonitrile wherein up to 75% by weight of the monomer mixture may be replaced by C.sub.1 --C.sub.20 -alkyl esters of acrylic and/or methacrylic acid and polymerization is carried out in the presence of from 0.01 to 10% by weight, based on the total quantity of monomers, of one or more enol ethers derived from aliphatic or cycloaliphatic aldehydes or ketones.
    Type: Grant
    Filed: January 24, 1983
    Date of Patent: March 27, 1984
    Assignee: Bayer Aktiengesellschaft
    Inventors: Heinrich Alberts, Rudiger Schubart, Alfred Pischtschan
  • Patent number: 4433082
    Abstract: A process is provided for making a liquid composition of a perfluorinated polymer having sulfonic acid or sulfonate groups in a liquid medium by contacting the polymer with a mixture of 25 to 100% by weight of water and 0 to 75% by weight of a second liquid component such as a lower alcohol, e.g., propanol or methanol, at a temperature of at least 180.degree. C. (at least 240.degree. C. when about 90% to 100% water is used), in a closed system. The liquid composition made by this process, or modified liquid products prepared therefrom, are used in coating various substrates, in casting films, and in repairing perfluorinated ion exchange films and membranes. The process is also useful in recovering perfluorinated polymer having sulfonic acid or sulfonate groups from scrap and used articles made of such polymer or containing such polymer as a component part thereof.
    Type: Grant
    Filed: May 1, 1981
    Date of Patent: February 21, 1984
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Walther G. Grot
  • Patent number: 4401788
    Abstract: An emulsion polymerized vinylidene chloride copolymer latex having polymerized therein vinylidene chloride and one or more ethylenically unsaturated monomers copolymerizable therewith. The latex contains both an anionic and a nonionic surfactant. The latex remains stable following addition of about 2 percent by weight of a cationic antistatic agent on a polymer solids basis.
    Type: Grant
    Filed: February 1, 1982
    Date of Patent: August 30, 1983
    Assignee: Asahi-Dow Limited
    Inventors: Kazuhiko Hiyoshi, Atsushi Sugizaki
  • Patent number: 4389503
    Abstract: The present invention relates to non-pigmented jet ink compositions and to a method of producing opaque coded messages therewith. The compositions comprise, on a weight basis, between 2 and 15% of a gellable cellulose ester having a hydroxyl content of from 2 to 8%, from 1.5 to 15% of a binding agent selected from the group consisting of alkali soluble rosin type and maleic type resins, polyvinyl acetate resins, and acrylic resins, and a solvent blend, the blend consisting essentially of an organic solvent system and a non-solvent, said non-solvent comprising from 2 to 10% by weight of the ink compositions. Preferred solvents are methanol, acetone, methyl ethyl ketone and ethyl acetate, while the preferred non-solvent is water. Upon evaporation of the solvent blend, the resultant dry films scatter light incident thereto whereby the opaque images are produced. In a particularly preferred embodiment, a hygroscopic salt is included in the composition as an opacity enhancement agent.
    Type: Grant
    Filed: April 28, 1982
    Date of Patent: June 21, 1983
    Assignee: American Can Company
    Inventors: Dorothy Maxwell, David A. Fell
  • Patent number: 4382126
    Abstract: Wire coating formulations are provided by heating a mixture of aromatic dianhydride, water and a monoalkyl glycol ether, followed by the addition of organic diamine. The resulting mixture is a stable wire coating enamel capable of forming flexible wire enamels upon cure.
    Type: Grant
    Filed: January 18, 1982
    Date of Patent: May 3, 1983
    Assignee: General Electric Company
    Inventors: Edith M. Boldebuck, Eugene G. Banucci
  • Patent number: 4352901
    Abstract: The present invention relates to non-pigmented jet ink compositions and to a method of producing opaque coded messages therewith. The compositions comprise, on a weight basis, between 2 and 15% of a gellable cellulose ester having a hydroxyl content of from 2 to 8%, from 1.5 to 15% of a binding agent selected from the group consisting of alkali soluble rosin type and maleic type resins, polyvinyl acetate resins, and acrylic resins, and a solvent blend, the blend consisting essentially of an organic solvent system and a non-solvent, said non-solvent comprising from 2 to 10% by weight of the ink composition. Preferred solvents are methanol, acetone, methyl ethyl ketone and ethyl acetate, while the preferred non-solvent is water. Upon evaporation of the solvent blend, the resultant dry films scatter light incident thereto whereby the opaque images are produced. In a particularly preferred embodiment, a hygroscopic salt is included in the composition as an opacity enhancement agent.
    Type: Grant
    Filed: August 14, 1980
    Date of Patent: October 5, 1982
    Assignee: American Can Company
    Inventors: Dorothy Maxwell, David A. Fell
  • Patent number: 4337184
    Abstract: Rheology modifiers useful in water-based and organic solvent-based compositions are derived from the reaction of polyalkylene oxide, polyfunctional material, diisocyanate and little or no water. The modifiers are characterized by having a branched structure and containing substantially no terminal hydrophobic groups.
    Type: Grant
    Filed: December 29, 1980
    Date of Patent: June 29, 1982
    Assignee: PPG Industries, Inc.
    Inventors: Karl F. Schimmel, Jerome A. Seiner, Rostyslaw Dowbenko, Roger M. Christenson
  • Patent number: 4336175
    Abstract: Stoichiometrically imbalanced solutions of 6FTA and aromatic diamine can be used to prepare laminates and bonded articles having a broad temperature range for consolidation.
    Type: Grant
    Filed: October 1, 1980
    Date of Patent: June 22, 1982
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Hugh H. Gibbs