With >n-c(=x)-n< -containing Reactant Wherein X Is A Chalcogen Atom Patents (Class 528/259)
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Patent number: 4456737Abstract: A composition of matter useful as a high solids coating is disclosed. The composition comprises at least one bishydroxymethyl tricyclo compound and at least one amino crosslinking agent.Type: GrantFiled: April 12, 1983Date of Patent: June 26, 1984Assignee: Henkel CorporationInventor: Edward DiDomenico, Jr.
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Patent number: 4455416Abstract: Cyclic urea/glyoxal/polyol condensates are excellent formaldehyde-free crosslinking resins for cellulosic textile fabrics and insolubilizers for binders in paper coating compositions.Type: GrantFiled: July 14, 1983Date of Patent: June 19, 1984Assignee: Sun Chemical CorporationInventors: William C. Floyd, Bernard F. North
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Patent number: 4451620Abstract: Diethanolammonium sulphamate is a curing agent for modified aminoplast resins.Type: GrantFiled: May 5, 1983Date of Patent: May 29, 1984Assignee: Cassella AktiengesellschaftInventors: Steffen Piesch, Peter Dorries
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Patent number: 4443223Abstract: The fastness of direct dyes on cellulose substrates is improved by after-treatment with the reaction product of a quaternary polyalkylene polyamine with an N-methylol resin precursor, and heat curing in the presence of a catalyst. The unfixed portion of reactive dyes substantive to cellulose may also be given improved wet and light fastness by this treatment.Type: GrantFiled: August 30, 1982Date of Patent: April 17, 1984Assignee: Sandoz Ltd.Inventors: Bruno Kissling, Walter Knobel, Tibor Robinson
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Patent number: 4440903Abstract: The present invention relates to novel key intermediates for the production of biologically active compounds coupled to polymers, of the general formula P--NCX.sub.2, wherein X designates a halogen atom selected from chlorine and bromine, and wherein P designates the polymer backbone of a polymer of the polyamide, polyester and ureaformaldehyde type. The invention further relates to compounds obtained by the reaction of the above compound P--NCX.sub.2 with a bifunctional or polyfunctional nucleophile. Suitable nucleophiles are hydrazides of dicarboxylic acids and amongst these there may be mentioned polyacrylamides partially substituted with acylhydrazide groups; polyfunctional amines selected from alkylamines, aralkylamines, arylamines and macromolecular compounds containing amino groups. The key intermediate PNCX.sub.2 may be coupled directly to biologically active macromolecules and amongst the preferred compounds of this type there are the various biologically active proteins and enzymes.Type: GrantFiled: June 30, 1978Date of Patent: April 3, 1984Assignee: Ramot University Authority for Applied Research and Industrial Development Ltd.Inventors: Leon Golstein, Mordechai Sokolovsky, Amihay Freeman
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Patent number: 4436524Abstract: The wet fastness properties of direct or reactive dyeings on cellulosic substrates are improved by aftertreatment with an agent comprising(A) a linear or crosslinked polymer comprising repeating units containing at least two quaternary nitrogen atoms linked by bridging groups connected to the quaternary nitrogen atoms by alkylene or arylene groups;optionally(B) an N-methylol derivative of a urea, melamine, guanamine, triazinone, urone, carbamate or acid amide;and, as an essential component,(C) a catalyst for the cross-linking of N-methylol compounds of the type (B) above,and subsequently carrying out a heat-curing step.Certain of the quaternary polymers (A), containing melamine groups, are novel.Type: GrantFiled: May 10, 1982Date of Patent: March 13, 1984Assignee: Sandoz Ltd.Inventor: Salvatore Valenti
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Patent number: 4424284Abstract: A cationic adsorption agent which is obtained by reaction of(a) an amino compound which contains at least one amino group and at least one free or methylolated carbamide or thiocarbamide group, or a salt thereof,with(b) an aminoplast precondensate which does not contain amino groups.The novel absorption agent is suitable in particular for removing anionic substances, such as acid dyes or reactive dyes, from aqueous solutions, especially from wastewaters.Type: GrantFiled: October 19, 1981Date of Patent: January 3, 1984Assignee: Ciga-Geigy CorporationInventors: Jaroslav Haase, Roger Palmberg
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Patent number: 4410685Abstract: A process for preparing a urea-formaldehyde base resin having a F/U molar ratio of 1.0:1-1.2:1, that is hydrolytically stable, which comprises adjusting a formaldehyde solution to a pH of 0.5-2.5, slowly charging urea to said formaldehyde solution while maintaining the temperature at 40.degree.-70.degree. C., neutralizing the reaction mixture after obtaining a Gardner viscosity in the range of T+-V+, then adding the final charge of urea and permitting equilibration.Type: GrantFiled: September 10, 1982Date of Patent: October 18, 1983Assignee: Borden, Inc.Inventor: James H. Williams
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Patent number: 4409293Abstract: A process for bonding lignocellulosic material under heat and pressure, where the bonded lignocellulosic material is characterized by a low emission of formaldehyde, which comprises applying a binder to said lignocellulosic material, said binder comprising a urea-formaldehyde base resin having a ratio of formaldehyde to urea of 1.0:1-1.2:1, said base resin having essentially no free formaldehyde and said base resin when cured containing substantially more methylene groups than methylene ether groups, consolidating said lignocellulosic material and curing the binder.Type: GrantFiled: September 10, 1982Date of Patent: October 11, 1983Assignee: Borden, Inc.Inventor: James H. Williams
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Patent number: 4395541Abstract: Ionene polymers have been prepared and have been found to be useful in cosmetic compositions for the treatment of the hair and skin, or in the treatment of natural or synthetic textile fibers.Type: GrantFiled: December 17, 1980Date of Patent: July 26, 1983Assignee: Societe Anonyme dite: L'OrealInventors: Bernard Jacquet, Gerard Lang, Alain Malaval, Serge Forestier, Do Le Trung
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Patent number: 4381368Abstract: A process for preparing urea-formaldehyde resins is disclosed. The process involves reacting urea and formaldehyde at pH 4.5-5.5 at 90.degree. to 100.degree. C. at a mole ratio of 2.0:1 to 2.2:1 formaldehyde:urea, and adding additional urea under these conditions. The reaction mixture is then neutralized and cooled to 30.degree. to 50.degree. C.and additional urea is reacted. The reaction mixture is then cooled to from 40.degree. to 30.degree. C. and additional formaldehyde and urea added to bring the final mole ratio of formaldehyde:urea to from 1.05:1 to 1.15:1.Type: GrantFiled: February 16, 1982Date of Patent: April 26, 1983Inventor: Harold N. Spurlock
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Patent number: 4375538Abstract: Polymer compositions comprising adducts of acrolein and isocyanuric acid and polyfunctional compounds containing aldehyde-reactive groups such as amines, amides, alcohols, thiols and oxiranes. The compositions are useful in molding, laminating, coating and adhesive applications.Type: GrantFiled: December 22, 1980Date of Patent: March 1, 1983Assignee: Monsanto CompanyInventors: Saul M. Cohen, John R. LeBlanc
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Patent number: 4375537Abstract: Polymer compositions comprising acetals of acrolein-isocyanuric acid adducts and polyfunctional compounds containing acetal-reactive groups such as alcohols, thiols oxiranes and amides. The compositions are useful in molding, laminating, coating and adhesive applications.Type: GrantFiled: December 22, 1980Date of Patent: March 1, 1983Assignee: Monsanto CompanyInventors: Saul M. Cohen, John R. LeBlanc
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Patent number: 4374240Abstract: Polymer compositions comprising hemiacetals of acrolein-isocyanuric acid adducts and polyfunctional compounds containing hemiacetal-reactive groups such as amines, amides, alcohols, thiols and oxiranes. The compositions are useful in molding, laminating, coating and adhesive applications.Type: GrantFiled: December 22, 1980Date of Patent: February 15, 1983Assignee: Monsanto CompanyInventors: Saul M. Cohen, John R. LeBlanc
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Patent number: 4366267Abstract: Aluminum perchlorate, cupric perchlorate and chromic perchlorate are used as catalysts for acid catalyzed curable resins.Type: GrantFiled: December 17, 1980Date of Patent: December 28, 1982Assignee: The Quaker Oats CompanyInventor: George S. Everett
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Patent number: 4356275Abstract: Aminoplast foams of hardened reaction products of aldehydes and at least bifunctional modified .alpha.,.omega.-ureas which contain at least one ether, thioether, acetal, ester, ester amide and/or carbonate group and have a molecular weight of from 200 to 10,000.Type: GrantFiled: October 19, 1981Date of Patent: October 26, 1982Assignee: Bayer AktiengesellschaftInventors: Kuno Wagner, Manfred Dahm, Hanns P. Muller
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Patent number: 4351935Abstract: A thermosetting coating composition contains an acid-curable amino resin and from 0.1 to 10 percent by weight of a blocked sulphonic acid calculated on the weight of amino resin. In order to reduce the electric conductivity of the composition after a prolonged pot-life, a sulphonic acid oximate is used as the blocked acid.The compositions are advantageous for coating a substrate by electrostatic spraying.Type: GrantFiled: July 14, 1981Date of Patent: September 28, 1982Assignee: Akzo N.V.Inventors: Johan B. Reesink, Hendrik J. Hageman, Ulfert E. Wiersum
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Patent number: 4345063Abstract: Alkylated glyoxal/cyclic urea condensates are excellent formaldehyde-free crosslinking resins for textile fabrics.Type: GrantFiled: May 15, 1981Date of Patent: August 17, 1982Assignee: Sun Chemical CorporationInventor: Bernard F. North
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Patent number: 4332586Abstract: Alkylated glyoxal/cyclic urea condensates are excellent formaldehyde-free crosslinking resins for textile fabrics.Type: GrantFiled: May 15, 1981Date of Patent: June 1, 1982Assignee: Sun Chemical CorporationInventor: Bernard F. North
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Patent number: 4300898Abstract: Blends of a glyoxal/cyclic urea condensate or a partially or wholly alkylated derivative thereof and dimethylol dihydroxyethylene urea or a partially or wholly alkylated derivative thereof improve the properties of textile fabrics treated therewith and contain only small amounts of free formaldehyde.Type: GrantFiled: September 16, 1980Date of Patent: November 17, 1981Assignee: Sun Chemical CorporationInventor: Bernard F. North
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Patent number: 4298512Abstract: A process for the preparation of neutralized, urea aldehyde polymeric dispersions by acid catalyzed reaction of urea and formaldehyde plus a higher aldehyde, having from two to four carbon atoms, wherein the mol ratio of formaldehyde to the higher aldehyde is at least 2:1 and the function of the higher aldehyde is to act as an inhibitor of further polymerization. The dispersions are further stabilized against settling by the addition of thickener-suspending agents. The products of the process are useful as sources of nitrogen which continue to fertilize plants, especially grasses for long periods of time after applied by means of conventional spraying equipment.Type: GrantFiled: April 24, 1980Date of Patent: November 3, 1981Assignee: W. A. Cleary Chemical CorporationInventors: Paul Sartoretto, Kak-Yuen Tao
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Patent number: 4285690Abstract: Alkylated glyoxal/cyclic urea condensates are excellent formaldehyde-free crosslinking resins for textile fabrics.Type: GrantFiled: November 17, 1980Date of Patent: August 25, 1981Assignee: Sun Chemical CorporationInventor: Bernard F. North
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Patent number: 4284758Abstract: Alkylated glyoxal/cyclic urea condensates are excellent formaldehyde-free crosslinking resins for textile fabrics.Type: GrantFiled: November 17, 1980Date of Patent: August 18, 1981Assignee: Sun Chemical Corp.Inventor: Bernard F. North
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Patent number: 4284759Abstract: Aminoplast resin pigments for paper making comprise large surface area (>5m.sup.2 /g) particles, preferably of size below 200 .mu.m, made from an aminoplast resin made by condensing formaldehyde with urea and/or melamine in the presence of 0.2 to 15 moles, per 100 moles of formaldehyde, or sulphite, phosphate, phosphite or borate radicals. The resin may be converted to the particulate form by gelling the resin in extended form by dilution with an aqueous acid, followed by drying, curing, and comminution of the gelled resin. To effect gelation in extended form the resin is preferably diluted to a resin solids content of less than 25% by weight by the addition of sufficient acid to cause gelation within 20 minutes.Type: GrantFiled: May 3, 1979Date of Patent: August 18, 1981Assignee: Imperial Chemical Industries LimitedInventors: Richard G. C. Henbest, John Harrison
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Patent number: 4273693Abstract: A process for preparing a water-compatible furan polymer which includes subjecting a composition containing at least one saturated aliphatic monohydric alcohol; water; furfuryl alcohol; aldehyde; and nitrogen-containing compound to condensation reaction at an acidic pH; and the product obtained thereby.Type: GrantFiled: March 19, 1980Date of Patent: June 16, 1981Assignee: Ashland Oil, Inc.Inventor: Young D. Kim
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Patent number: 4271054Abstract: A process for preparing a water-compatible furan polymer which includes subjecting a composition containing at least one saturated aliphatic monohydric alcohol; water; furfuryl alcohol; aldehyde; phenolic compound; and nitrogen-containing compound to condensation reaction at basic pH, and then subjecting the composition to a condensation reaction at an acidic pH; and the product obtained thereby.Type: GrantFiled: March 19, 1980Date of Patent: June 2, 1981Assignee: Ashland Oil, Inc.Inventor: Young D. Kim
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Patent number: 4247433Abstract: A method for preparing thermosettable urea-formaldehyde resins having a urea to formaldehyde molar ratio of 1:1 to 1:1.5 wherein urea and formaldehyde are first reacted in an aqueous solution at a molar ratio of 1:1.5 to 1:4 in the pH range between 7.5 to 10, and then condensing the reactants in a pH range from 4 to 6 to a precipitation number of 1:1.5 to 1:10, thereafter adjusting the pH to 7 to 10 and adding the remaining urea to obtain a molar ratio of 1:1 to 1:1.5 and continuing the reaction until a precipitation number of 1:0.5 to 1:3 is obtained. The products obtained have a uniform molecular weight and good penetration properties when used to impregnate supporting webs for coating wood-based panels.Type: GrantFiled: May 24, 1979Date of Patent: January 27, 1981Assignee: Th. Goldschmidt AGInventors: Eckehard Schamberg, Ulrich Holtschmidt, Dieter Hellwig
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Patent number: 4246376Abstract: Coating compositions comprising methylolamino compounds are cured with high molecular weight fatty diols and higher polyols.Type: GrantFiled: September 10, 1979Date of Patent: January 20, 1981Assignee: Henkel CorporationInventor: Edward Didomenico, Jr.
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Patent number: 4243797Abstract: A process for the preparation of soft and hard resins, and their use in surface-coating binders are disclosed. According to the invention, soft and hard resins are prepared from a urea, formaldehyde and a CH-acidic aldehyde by reacting a urea of the general formula (I) or (II) ##STR1## where R.sup.1 and R.sup.2 are hydrogen or identical or different alkyl, A is alkylene and X is oxygen or sulfur, with formaldehyde and a CH-acidic aldehyde of the general formula (III) ##STR2## where R.sup.3 and R.sup.4 are identical or different alkyl, aryl or alkylaryl wherein the urea, formaldehyde and CH-acidic aldehyde are employed in a mole ratio of from 1:2:2 to 1:4:4, at from 60.degree. to 150.degree. C., in the presence of an acid and in the presence or absence of a solvent and/or diluent, and then treating the product with a base in an anhydrousmedium.Type: GrantFiled: December 20, 1978Date of Patent: January 6, 1981Assignee: BASF AktiengesellschaftInventors: Harro Petersen, Kurt Fischer, Hans Klug, Werner Trimborn, Horst Schmidt
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Patent number: 4230597Abstract: Radioactive waste materials are converted into solid form by mixing the radioactive waste with a novel polymeric formulation which, when solidified, forms a solid, substantially rigid matrix that contains and entraps the radioactive waste. The polymeric formulation comprises, in certain significant proportions by weight, urea-formaldehyde; methylated urea-formaldehyde; urea and a plasticizer. A defoaming agent may also be incorporated into the polymeric composition. In the practice of the invention, radioactive waste, in the form of a liquid or slurry, is mixed with the polymeric formulation, with this mixture then being treated with an acidic catalyzing agent, such as sulfuric acid. This mixture is then preferably passed to a disposable container so that, upon solidification, the radioactive waste, entrapped within the matrix formed by the polymeric formulation, may be safely and effectively stored or disposed of.Type: GrantFiled: August 3, 1978Date of Patent: October 28, 1980Assignee: Hittman CorporationInventors: Thomas S. Bustard, Corriene S. Pohl
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Patent number: 4224423Abstract: A method for the manufacture of an aminoformaldehyde resin. An amino compound is reacted with formaldehyde or paraformaldehyde in the liquid phase the latter being ensured by the presence of a reactive modifier in the reaction mixture. The reactive modifier comprises an amino-formaldehyde resin which is capable of reaction with further monomers and capable of rendering the mixture of reactants liquid at least at the temperature at which the reaction is to be carried out.Type: GrantFiled: June 2, 1978Date of Patent: September 23, 1980Assignee: British Industrial Plastics LimitedInventors: Dennis H. Ogden, George Inverarity
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Patent number: 4220751Abstract: A process for the preparation of soft and hard resins, and their use in surface-coating binders.According to the invention, soft and hard resins are prepared from a urea and a CH-acidic aldehyde by reacting a urea of the general formula (I) ##STR1## where X is oxygen or sulfur and R.sup.1 and R.sup.2 are hydrogen or identical or different alkyl, aryl or aralkyl, or may be an alkyleneurea radical, with at least 2 moles of a CH-acidic aldehyde of the general formula (II) ##STR2## where R.sup.3 is hydrogen and R.sup.4 is alkyl, aryl or aralkyl, or R.sup.3 and R.sup.4 are identical or different alkyl, aryl or aralkyl, in the presence of a strong acid, to give a condensation product, and then treating the latter with a base in an anhydrous medium.These soft and hard resins are used, in combination with other film-forming agents, as surface-coating binders.Type: GrantFiled: December 15, 1978Date of Patent: September 2, 1980Assignee: BASF AktiengesellschaftInventors: Harro Petersen, Kurt Fischer, Hans Klug, Werner Trimborn
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Patent number: 4220576Abstract: The process for the manufacture of a plaster product comprises adding a u-formol or melamine-formol resin to a calcium sulphate base powder, the starting powder being constituted by partially hydrated calcium sulphate (plaster alone or with gypsum, or anhydrite with gypsum such as phosphogypsum). The percentage of resin, measured in weight of dry extract of the latter with respect to the weight of the dry extract of the powder to which it is added, is comprised between 1 and 5%. A powder-resin-water mixture is formed by a process of extrusion. The product thus formed is heated to a temperature comprised between 105.degree. and 120.degree. C. Articles having exceptional surface hardness and durability can be formed therefrom by a continuous extrusion.Type: GrantFiled: July 25, 1978Date of Patent: September 2, 1980Assignee: Societe d'Investissement pour le Developpement des Appareils MenagersInventor: Francois Tatard
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Patent number: 4204053Abstract: A method for the production of urea of high mechanical strength by the crystallizing process or the evaporation process, including a prilling or granulating step, utilizing 0.01-1% by weight of formaldehyde in the form of a formaldehyde polymer, which comprises, before prilling or granulating, incorporating in the urea, a formaldehyde polymer with a formaldehyde content of 82-97% and with a melting point of about 90.degree.-160.degree. C.Type: GrantFiled: September 13, 1978Date of Patent: May 20, 1980Assignee: Norsk Hydro a.s.Inventors: Tore Elstrom, deceased, Per F. Gustavsen, Olav Kjohl
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Patent number: 4200730Abstract: Microscopic opacifying particles formed of a formaldehyde condensation product are chemically modified to impart anionic-, cationic- or hydroxy-functional groups thereto in order to provide improved dye receptivity, dispersibility and compatibility properties.Type: GrantFiled: December 1, 1978Date of Patent: April 29, 1980Assignee: Champion International CorporationInventor: Ronald Golden
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Patent number: 4200729Abstract: Amino resins, e.g., urea-formaldehyde and melamine-formaldehyde thermosetting resin systems, are cured with thermally-decomposable adducts of aromatic sulfonic acids and oxa-azacyclopentanes. The resin products cured with these adducts provide surface coatings having superior water resistance properties. The cured compositions can include other conventional ingredients capable of co-reacting with the amino resins, such as polyols, polyacids, alkyd resins, polyester resins, epoxies, acrylics and the like, to provide compositions curable to products having a wide range of properties.Type: GrantFiled: May 22, 1978Date of Patent: April 29, 1980Assignee: King Industries, IncInventor: Leonard J. Calbo
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Patent number: 4192924Abstract: Curable organic resin compositions, such as epoxy resins, are provided, based on the use of a diaryliodonium salt-redox catalyst curing system. The curable compositions can provide flexible or rigid organic resin foam when used with a volatile organic solvent as a result of exothermic heat of cure.Type: GrantFiled: April 30, 1979Date of Patent: March 11, 1980Assignee: General Electric CompanyInventor: James V. Crivello
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Patent number: 4192923Abstract: Amino resin foams of the urea-formaldehyde or urea-melamine-formaldehyde type formed from a one-phase solution of methylene chloride solvent, propylene glycol co-solvent, catalyst and polymer precursors which may be urea and formaldehyde or urea, melamine and formaldehyde. As reaction occurs between the polymer precursors in the solution, the methylene chloride in the solution vaporizes foaming the resin. In the product foam, the propylene glycol acts as a plasticizer and the methylene chloride as the blowing agent in a closed-cell foam having superior stability and insulative properties. The product foam is useful in building insulation and for other insulative purposes.Type: GrantFiled: October 27, 1978Date of Patent: March 11, 1980Assignee: Allied Chemical CorporationInventor: Edward G. Tajkowski
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Patent number: 4187356Abstract: This invention relates to mixtures of formose, aminoplast monomers and optionally water and/or crystalline mono or disaccharides. The mixtures are relatively low viscosity liquids at room temperature. The invention also relates to the use of such mixtures for the production of polyurethane resins, in particular foam resins.Type: GrantFiled: August 17, 1978Date of Patent: February 5, 1980Assignee: Bayer AktiengesellschaftInventor: Kuno Wagner
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Patent number: 4178429Abstract: Process and catalyst for curing resins (e.g. furans) comprising concentrated aqueous solutions of perchloric acid (about 45-72%) and the cured resins obtained using said catalyst. Improved catalyst combinations for curing resins in a process employing same and the cured resin produced thereby comprising concentrated perchloric acid, a small amount of phosphoric acid and/or a small amount of boric acid.Type: GrantFiled: November 17, 1978Date of Patent: December 11, 1979Inventor: Karl D. Scheffer
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Patent number: 4174310Abstract: Aqueous urea-formaldehyde resins solutions are prepared by (a) forming a first aqueous solution containing urea and formaldehyde in a molecular ratio in the range urea:formaldehyde=1:3 to 1:1.5, (b) reacting the first aqueous solution under neutral or alkaline conditions to form a reaction mixture containing substantial amounts of methylol urea products, (c) vacuum evaporating the reaction mixture to produce a concentrated mixture having a solids content of 55% to 80% by weight, and (d) further condensing the concentrated mixture under acid conditions to produce a resinous material. The urea may be wholly or partially replaced by melamine.Type: GrantFiled: June 20, 1977Date of Patent: November 13, 1979Assignee: Imperial Chemical Industries LimitedInventor: Donald A. Hubbard
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Patent number: 4170697Abstract: Silicon halides will react chemically with polyols to produce polyol silicate resinous products which will react chemically with polyisocyanates to produce polyisocyanate silicate solid or cellular solid products.Type: GrantFiled: June 23, 1978Date of Patent: October 9, 1979Inventor: David H. Blount
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Patent number: 4168370Abstract: A method for the manufacture of amino-formaldehyde resins of low water content. Amino compound and formaldehyde or paraformaldehyde are reacted at a temperature about 60.degree. C. in the liquid phase, the liquid phase being ensured by a reactive modifier. The reactive modifier is a compound which is capable of taking part in the reaction, and also capable of modifying the mixture of reactants to be liquid at the temperature at which the reaction is to be carried out.Type: GrantFiled: May 24, 1978Date of Patent: September 18, 1979Assignee: British Industrial Plastics Ltd.Inventors: Dennis H. Ogden, George Inverarity
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Patent number: 4165305Abstract: A two-component binder system for exterior grade fiberboard and other products, the first component comprising a stable aqueous solution of about 10 to 15 weight percent urea, about 30 to 40 weight percent formaldehyde, about 25 to 40 weight percent water, about 15 to 25 weight percent melamine, about 0.4 to 1.0 weight percent of a buffering agent which maintains the pH at about 6.5 to 7.0 and optionally up to about 6 weight percent of an alkanol of 1 to 6 carbon atoms, the solution having a viscosity when formed of less than about 60 cps and a viscosity after about 7 days of less than about 1000 cps. The second component is a solution comprising about 35 to 55 weight percent urea, about 45 to 65 percent water and optionally up to about 4 weight percent of a catalyst which promotes the reaction of urea, formaldehyde and melamine. The two components may be admixed at room temperature in a ratio of about 3 to 5 parts of the first component to one part of the second component to form the binder.Type: GrantFiled: February 13, 1978Date of Patent: August 21, 1979Assignee: Allied Chemical CorporationInventors: Richard D. Sundie, William R. Michael
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Patent number: 4160754Abstract: This invention is directed to gels which are stable in storage, comprising a polymer matrix, a liquid dispersing agent embedded therein and optionally fillers or additives, characterized in that said polymer matrix is a polycondensation product of aldehydes and aminoplast-formers, at least 30% by weight of the aminoplast-formers having a molecular weight of between 200 and 10,000 and containing at least one ether, thioether, acetal, ester, urethane and/or carbonate group.Type: GrantFiled: March 13, 1978Date of Patent: July 10, 1979Assignee: Bayer AktiengesellschaftInventors: Dietmar Schapel, Kuno Wagner, Hanns P. Muller, Manfred Dahm
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Patent number: 4129547Abstract: A low viscosity high solids thermosetting coating composition useful in the packaging industry as a barrier coating and overprint varnish, based urea-formaldehyde crosslinking agents and low molecular weight polyols, is provided. These compositions provide rapid cure response and afford coatings having good gloss, clarity, and mar resistance and are non-blocking. The compositions do not contain aromatic solvents and are applicable by gravure or flexographic techniques.Type: GrantFiled: June 30, 1977Date of Patent: December 12, 1978Assignee: E. I. Du Pont de Nemours and CompanyInventor: Paul R. Noyes
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Patent number: 4102840Abstract: This invention describes a process for the manufacture of condensation products and compositions obtained thereby. The condensation products are prepared by the reaction of 2 to 3 moles of urea with 0,9 to 1,1 mole of formaldehyde and 1 mole of isobutyraldehyde in the presence of 0,2 to 1,0 equivalent of strong acids and 4 to 18 moles of water. The pH-value of the resulting products is adjusted to 7 to 9,5 and the water is partially to almost completely removed. Then the products are methylolated with 3 to 4 moles of formaldehyde. Finally the condensation products are etherified with low alcohols in usual manner. Used singly or together with other N-methylol compounds and their ethers with low alcohols, the products are useful compositions which are capable of rendering cellulosic textile materials and blends with synthetic fibres crease- and shrinkproof.Type: GrantFiled: November 15, 1976Date of Patent: July 25, 1978Assignee: Ciba-Geigy CorporationInventor: Gunter Pusch
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Patent number: 4101521Abstract: To manufacture highly disperse solids of crosslinked urea-formaldehyde polycondensation products consisting of primary particles with an average diameter not greater than 1 micron, an aqueous solution consisting essentially of water and a precondensate of urea and formaldehyde is converted into a crosslinked gel by the addition of sulphamic acid or a water-soluble ammonium hydrogen sulphate, in the course of which the molar ratio of formaldehyde:urea should be greater than 1.2 and not greater than 2.0 not later than at the time of the formation of the gel. The resulting gel is comminuted, dried and disintegrated. The powders are suitable for use as pigments, carriers and absorbents.Type: GrantFiled: June 3, 1976Date of Patent: July 18, 1978Assignee: Ciba-Geigy AGInventor: Alfred Renner
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Patent number: 4101437Abstract: Disclosed is a composition and process for inhibiting an aqueous acid solution and a composition so inhibited. The acid solution containing, for example, HF is inhibited by including a condensation product of a mixture of diethyl- and dibutyl-thiourea with hexamethylenetetramine.Type: GrantFiled: March 29, 1977Date of Patent: July 18, 1978Assignee: Oxy Metal Industries CorporationInventors: Josef Rones, Joachim Geldner