Contacting With An Amine, A Material Containing A N-c(=x)- Or N-s(=o)- (x Is Chalcogen) Reactant And An Aldehyde Or Aldehyde Derivative At Least One Of Which Is Saturated, Their Condensate Or Solid Polymer Thereof Patents (Class 525/157)
  • Patent number: 4564657
    Abstract: Rapidly curable adhesive compositions suitable for bonding polypropylene, comprising a polymer of sulfochlorinated and/or chlorinated polypropylene with an average chlorine content of 26% to 34% by weight, and an average molecular weight of 5,000 to 120,000, dissolved in monomeric ingredients such as acrylic and/or methacrylic monomers.
    Type: Grant
    Filed: February 16, 1984
    Date of Patent: January 14, 1986
    Assignee: Sanyo Kokusaku Pulp Co., Ltd.
    Inventors: Toshihiko Nishikubo, Kazuo Shimizu
  • Patent number: 4537923
    Abstract: Polyalkylpiperidinesulfonic acid esters of the formulae I and IIB--X--O--SO.sub.2 --A).sub.m (I)(B'--X--O--SO.sub.2).sub.2 A' (II),in which A, A', B, B', X and m are as defined in claim 1, the polyalkylpiperidine group being present in each of the substituents B and B'. These esters are suitable for use as curing catalysts for acid-curable resins and act therein, at the same time, as light stabilizers.
    Type: Grant
    Filed: June 13, 1983
    Date of Patent: August 27, 1985
    Assignee: Ciba Geigy Corporation
    Inventors: Mario Slongo, Friedrich Karrer
  • Patent number: 4521452
    Abstract: Preparation of polymeric gels, filaments, and films prepared by producing a uniform dispersion of a water soluble acrylamide polymer or copolymer in the water insoluble reaction product of certain water soluble aldehydes and water soluble primary amines. The reaction is carried out in aqueous solution. Gel formation time may range from a few seconds to several minutes depending on selection of appropriate parameters. The gels have many desirable properties such as preparation from relatively nontoxic components, superior adhesion, toughness, and water impermeability. The gels have many uses such as adhesives, sealing cracks and joints in pipes, stabilizing earthen formations, waterproofing subgrade construction and as intermediates in the preparation of films, filaments, and membranes. Gels for these purposes may be treated with carbon dioxide to provide a color change and additional surface hardness.
    Type: Grant
    Filed: February 26, 1981
    Date of Patent: June 4, 1985
    Inventor: Ronald E. Highsmith
  • Patent number: 4487889
    Abstract: A protective surface coating composition containing polyol, glycoluril, and emulsion polymer can be heat cured to produce cured films on substrates. The coating is particularly useful as wood coatings.
    Type: Grant
    Filed: April 25, 1984
    Date of Patent: December 11, 1984
    Assignee: SCM Corporation
    Inventor: Gary P. Craun
  • Patent number: 4482698
    Abstract: A thermosetting coating composition containing 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. The blocked acid used is an O-sulphonyl hydroxamic ester of the formula [RSO.sub.2 ONHCOO].sub.n A, wherein n represents an integer from 1 to 5 and R and A are organic groups.The new blocked acids are better soluble in the current solvents used in these coating compositions.The compositions may be used advantageously for coating a substrate by electrostatic spraying.
    Type: Grant
    Filed: August 8, 1983
    Date of Patent: November 13, 1984
    Assignee: Akzo N.V.
    Inventor: Johan B. Reesink
  • Patent number: 4459386
    Abstract: For the production of acrylonitrile polymers containing phosphonic acid groups and having phosphorus contents of 1-17% by weight, homo- or copolymers of acrylonitrile having molecular weights of 1,000-200,000 are reacted at temperatures of 120.degree.-220.degree. C. with 0.2-8 moles of phosphorous acid per mole of nitrile group. Preferably, a melt is prepared from phosphorous acid, and the acrylonitrile polymer is added thereto in metered quantities.
    Type: Grant
    Filed: December 14, 1982
    Date of Patent: July 10, 1984
    Assignee: Chemische Werke Huels Aktiengesellschaft
    Inventor: Raban Grundmann
  • Patent number: 4429077
    Abstract: Acid addition salts of basic polyalkylpiperidine derivatives, which contain a group of the formula I ##STR1## in which R is H or CH.sub.3, and an inorganic or organic acid, and also inner salts of sulfonic acids which contain a group of the formula I, are suitable as curing catalysts for acid-curable stoving lacquers. Their advantage is a long pot life and also an additional light stabilizing action.
    Type: Grant
    Filed: December 9, 1981
    Date of Patent: January 31, 1984
    Assignee: Ciba-Geigy Corporation
    Inventors: Friedrich Karrer, Godwin Berner, Jean Rody
  • Patent number: 4424317
    Abstract: A Mannich condensation product of an amorphous, oil soluble olefin/carbonyl polymer, amine and formaldehyde yielding reactant wherein the carbonyl groups are provided by at least one member selected from the group consisting of carbon monoxide and vinyl alkyl ketone and lube oil compositions comprising said polymers.
    Type: Grant
    Filed: December 6, 1982
    Date of Patent: January 3, 1984
    Assignee: Standard Oil Company (Indiana)
    Inventors: Carl Serres, John G. Schaffhausen
  • Patent number: 4413999
    Abstract: The invention provides amidoxime derivatives of the general formula ##STR1## wherein R.sub.1 is an alkyl group of 1 to 8 carbon atoms, phenyl, a heterocyclic ring structure of 5 to 8 atoms containing one or more nitrogen or oxygen atoms or combinations thereof or a bicyclic condensed ring system optionally containing at least one heterocyclic ring which groups may each be optionally substituted. R.sub.2 is a mono or bicyclic heterocyclic radical containing at least two nitrogen atoms which radical is also optionally substituted. R.sub.3 and R.sub.4 are independently H, or an alkyl of 1 to 4 carbon atoms or one, but not both, is ##STR2## and the other, H, wherein R.sub.5 or R.sub.6 are alkyls of 2 to 5 carbon atoms optionally substituted by R.sub.1, or a phenyl optionally substituted by R.sub.1 or R.sub.5 or R.sub.6 is combined with R.sub.1 to jointly form cyclic imidoximes or imidedioximes.
    Type: Grant
    Filed: March 5, 1982
    Date of Patent: November 8, 1983
    Assignee: Research Products Rehovot Ltd.
    Inventors: Charles Linder, Gershon Aviv
  • Patent number: 4390659
    Abstract: Quaternary carboxamide polymers such as N-(triethylammonium ethyl)acrylamide chloride are prepared by simultaneously contacting a carboxamide polymer with an aldehyde such as formaldehyde, a secondary amine such as dimethylamine and a quaternizing agent such as methyl chloride. By such method, quaternary carboxamide polymers useful in a variety of applications such as emulsion breaking and water clarification are readily prepared.
    Type: Grant
    Filed: June 10, 1980
    Date of Patent: June 28, 1983
    Assignee: The Dow Chemical Company
    Inventors: Frederick W. Stanley, Jr., William J. Fairchok
  • Patent number: 4379886
    Abstract: A thermosetting coating composition having a binder of a film forming polymer having reactive hydroxyl groups, epoxy groups or methylol groups and a melamine, benzoguanamine or urea crosslinking agent and about 0.1-10% by weight of reactive catalyst which is a solid at 30.degree. C. in which the catalyst has one of the following structures: ##STR1## or mixtures of the above; where R is an alkyl group or a hydroxy alkyl group having 1-18 carbon atoms; the catalyst is prepared by reacting in a 1:1 molar ratio trimellitic anhydride and an aliphatic monohydric alcohol or an aliphatic diol.
    Type: Grant
    Filed: July 2, 1981
    Date of Patent: April 12, 1983
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Joseph E. McLaughlin, George A. Strickland
  • Patent number: 4374164
    Abstract: A high solids polymer resin coating composition cross-linked with alkylated melamine resins possessing improved intercoat adhesion in multiple coating applications. A mixed methylated isobutylated melamine resin as a cross-linking agent for the high solids polymer resin coating composition surprisingly substantially eliminates intercoat adhesion failure without any negative effects on overall coating properties and performance. The backbone polymer of the composition may advantageously be acrylic resin, a polyester resin or mixtures thereof while the mixed methylated isobutylated melamine resin cross-linking agent is advantageously predominantly monomeric poly(methoxy isobutoxymethyl) melamine resin with an average methoxy content of 1-5 and an average isobutoxy content of 5-1, per triazine.
    Type: Grant
    Filed: December 14, 1981
    Date of Patent: February 15, 1983
    Assignee: American Cyanamid Company
    Inventor: Werner J. Blank
  • Patent number: 4352909
    Abstract: There is disclosed a process for producing a tri-halogenated polystyrene flame retardant for synthetic resins, whereby high molecular weight polystyrene is reacted with bromine chloride in a chlorinated hydrocarbon solvent, under substantially anhydrous conditions, in the presence of a catalytic amount of a Lewis acid.
    Type: Grant
    Filed: August 20, 1980
    Date of Patent: October 5, 1982
    Assignee: Ferro Corporation
    Inventors: Henry J. Barda, Sandra L. Gray
  • Patent number: 4346181
    Abstract: A method of reducing the formaldehyde emissions from formaldehyde condensation polymers is disclosed. A substance having two or more amide linkages, such as a polyacrylamide polymer is incorporated in the polymer solution immediately or shortly before use, the acrylamide polymer reacting with free formaldehyde in the solution or that generated as a result of hydrolytic breakdown of the formaldehyde condensation polymer. The incorporation of polyacrylamide polymers in a urea-formaldehyde resin solution used in the production of urea-formaldehyde insulating foams is of particular benefit.
    Type: Grant
    Filed: September 8, 1981
    Date of Patent: August 24, 1982
    Assignee: Board of Regents, University of Washington
    Inventor: George G. Allan
  • Patent number: 4341681
    Abstract: Cationic solution addition copolymers of monoethylenically unsaturated copolymerizable monomers are described having Mannich base side chains with the structure: ##STR1## where R and R' are selected from C.sub.1 -C.sub.8 alkyl and C.sub.1 -C.sub.8 alkanol, or are together constituted by a C.sub.2 -C.sub.8 alkylene group. This copolymer is preferably reacted with a diepoxide in a stoichiometric deficiency with respect to the amine groups in the side chains. At least a portion of the tertiary amine groups are then reacted with a solubilizing acid to form a salt which enables the copolymer to be dissolved in water.
    Type: Grant
    Filed: May 18, 1981
    Date of Patent: July 27, 1982
    Assignee: De Soto, Inc.
    Inventors: Kazys Sekmakas, Raj Shah, Aurelio J. Parenti
  • Patent number: 4339364
    Abstract: An aqueous starch-based adhesive comprising: (a) water; (b) corn starch or wheat starch; (c) a carboxylated styrene-butadiene latex; (d) a thickener; and (e) a crosslinking agent. The thickener and cross-linking agent are collectively present as a minor component. A preferred thickener is a mixture of hydroxyethylcellulose and ammonia and the preferred crosslinking agent is a mixture of a ureaformaldehyde resin and glyoxal. The adhesive has a solids content of between about 35 and about 50 weight percent and pH ranging from about 4.5 to 7.0. The aqueous adhesive can be used to provide corrugated paperboard at rates ranging from 300 to 550 linear feet/minute and has a stable pot life of up to one week. It results in little or no corrosion to corrugating equipment and can be used in the same application and storage systems with conventional starch adhesives. Preparation of the adhesive is simplified because it need not be heated.
    Type: Grant
    Filed: July 30, 1980
    Date of Patent: July 13, 1982
    Assignee: Champion International Corporation
    Inventor: Paul L. Krankkala
  • Patent number: 4332657
    Abstract: An emulsion composition for use in baking paint prepared by emulsion polymerization with ionizing radiation of a monomer mixture comprising (1) at least one acrylamide selected from the group consisting of N-methylolacrylamide and N-alkoxymethylacrylamide, (2) a radical polymerizable ethylenic unsaturated monomer having a hydroxyl group, and (3) a radical polymerizable ethylenic unsaturated monomer other than (1) and (2) above.
    Type: Grant
    Filed: November 16, 1979
    Date of Patent: June 1, 1982
    Assignees: Kansai Paint Co., Ltd., Japan Atomic Energy Research Institute
    Inventors: Keizo Makuuchi, Akio Katakai, Miyuki Hagiwara, Tsutomu Yamamoto, Hiroyuki Nakayama, Tohru Takagi
  • Patent number: 4315053
    Abstract: An article having a substrate and a multilayer coating composition adhered thereto. The multilayer coating has a pigmented base film and deposited on the base film is a transparent coating which has no intermixing and no intersolution between the base coating and the transparent coating. The transparent coating is a cross linking resin containing hydroxyl groups obtained by esterifying polycarboxylic acids with polyols.
    Type: Grant
    Filed: May 28, 1980
    Date of Patent: February 9, 1982
    Assignee: BASF Farben & Fasern AG
    Inventors: Ulrich Poth, Dieter Moller, Arnold Dobbelstein
  • Patent number: 4312805
    Abstract: There are provided self-extinguishing compositions comprising, for each 100 parts of a polyolefin as such or containing inert fillers and/or other additives, from 5 to 30 parts of an ammonium or amine phosphate, from 3 to 20 parts of one or more nitrogen organic compound which, upon heating in the presence of the ammonium or amine phosphate, decompose to form a non-dripping carbonaceous mass, the nitrogen-containing compounds being selected from among(a) reaction products of aliphatic or aromatic diisocyanates or triisocyanates and organic compounds having reactive hydrogen atoms;(b) a mixture of (a) and/or an aldehyde/amine or aldehyde/urea reaction product with a polyamide; and(c) a mixture of an amine with a polyamide.The foregoing compositions provide acceptable levels of self-extinguishing properties without being corrosive or emitting toxic smokes or gases in the proximity of an open flame.
    Type: Grant
    Filed: January 10, 1978
    Date of Patent: January 26, 1982
    Assignee: Montedison, S.p.A.
    Inventors: Guido Bertelli, Pierpaolo Roma, Renato Locatelli
  • Patent number: 4307001
    Abstract: Coating compositions comprising an unsaturated oil modified resin and an unsaturated melamine condensate. The unsaturated melamine condensate is a condensate of a methylolmelamine, an acrylamide, an ethylenically unsaturated fatty acid amide and optionally a C.sub.1 to C.sub.10 alcohol, wherein the methylolmelamine has at least about 5 methylol groups per melamine ring, wherein substantially all the methylol groups are condensed with the acrylamide, the unsaturated fatty acid amide or the alcohol, wherein the number of the acrylamide moieties of the condensate is in the range of about 1 to about 4 per melamine ring and the number of unsaturated fatty acid amide moieties is in the range of about 0.5 to about 2 per melamine ring, wherein the ratio of the acrylamide moieties to unsaturated fatty acid amide moieties is in the range of about 1:1 to about 3:1.
    Type: Grant
    Filed: June 9, 1980
    Date of Patent: December 22, 1981
    Assignee: Monsanto Company
    Inventors: William F. Strazik, John R. LeBlanc, J. Owen Santer
  • Patent number: 4297448
    Abstract: A thermosetting coating composition which may have nonvolatile solids content as high as 60% or greater and which may be employed as an automotive topcoat. The composition, exclusive of pigments, solvent, reactive and non-reactive diluents and other non-reactive components, consists essentially of:(A) A binder composition consisting essentially of:(1) Between about 30 and about 75 weight percent of one or more low viscosity resins selected from hydroxy functional acrylic polymers, hydroxy functional polyethers and hydroxy functional polyesters, each of which (i) is substantially soluble in the solvent of the composition and (ii) has a number average molecular weight of between about 1000 and about 2500; and(2) Between about 70 and about 25 weight percent of one or more crosslinked dispersion polymers each of which is substantially insoluble in the solvent of the composition; and(B) An aminoplast crosslinking agent in an amount of between about 5 and about 40 parts per 100 parts of said binder composition.
    Type: Grant
    Filed: October 17, 1979
    Date of Patent: October 27, 1981
    Assignee: Ford Motor Company
    Inventors: Yun-Feng Chang, Henk V. Oene, Elaine C. Beckwith
  • Patent number: 4293461
    Abstract: An unsaturated condensate of a methylolmelamine, an acrylamide, an unsaturated fatty acid amide and optionally a C.sub.1 to C.sub.10 alcohol, wherein the methylolmelamine has at least about 5 methylol groups per melamine ring, wherein substantially all the methylol groups are condensed with acrylamide, unsaturated fatty acid amide or alcohol, wherein the number of acrylamide moieties of the condensate is in the range of about 1 to about 4 per melamine ring and the number of unsaturated fatty acid amide moieties is in the range of about 0.5 to about 2 per melamine ring and wherein the ratio of acrylamide moieties to unsaturated fatty acid amide moieties is in the range of about 1:1 to about 3:1. The unsaturated condensates are used in high solids unsaturated coating systems containing unsaturated oil-modified resins.
    Type: Grant
    Filed: June 9, 1980
    Date of Patent: October 6, 1981
    Assignee: Monsanto Company
    Inventors: William F. Strazik, John R. LeBlanc, J. Owen Santer
  • Patent number: 4283324
    Abstract: A nitrocellulose-free nail enamel composition comprising a polyvinyl butyral resin as the film-forming agent, a compatible modifier resin, and a compatible cosmetic solvent.
    Type: Grant
    Filed: December 4, 1979
    Date of Patent: August 11, 1981
    Assignee: Avon Products, Inc.
    Inventor: John A. Duffy
  • Patent number: 4265835
    Abstract: In a process for preparing a N-substituted derivative of a carboxamide, the conversion of carboxamide to the derivative is determined by carbon-13 nuclear magnetic resonance analysis (CMR) wherein the intensities of the carbonyl carbon peaks attributable to the carboxamide and the derivative are measured under conditions of magnetic resonance and the mole ratio of carboxamide to derivative is determined by comparing the intensities of said carbonyl carbon peaks.For example, in the reaction of polyacrylamide with a secondary amine such as dimethylamine and formaldehyde, the conversion of the polyacrylamide to its N-(dimethylaminomethyl) derivative is determined by subjecting the sample to CMR analysis and comparing the intensities of the carbonyl carbon peaks of the polyacrylamide and the N-(dimethylaminomethyl) derivative.
    Type: Grant
    Filed: September 10, 1979
    Date of Patent: May 5, 1981
    Assignee: The Dow Chemical Company
    Inventors: Charles J. McDonald, Robert H. Beaver
  • Patent number: 4255530
    Abstract: A binder composition which comprises (A) from 99 to 50% by weight of copolymer consisting of copolymerized units of (a) from 5 to 90% by weight of at least one aliphatic (meth)acrylate containing from 1 to 8 carbon atoms in the alcohol moiety; (b) from 0 to 60% by weight of at least one aromatic vinyl or isopropylene compound containing from 8 to 14 carbon atoms; (c) from 1 to 40% by weight of at least one comonomer selected from (I) at least one mono (meth)acrylate of an alcohol containing from 2 to 8 carbon atoms and having from 2 to 4 hydroxyl groups; and/or (II) at least one maleic acid semi-ester corresponding to the following general formula ##STR1## wherein R.sub.1 represents hydrogen or methyl; and R.sub.2 represents hydrogen, methyl, ethyl, propyl, i-propyl or phenyl; and (d) from 0 to 60% by weight of at least one other olefinically unsaturated comonomer; and (B) from 1 to 50% by weight of a saturated lactam.
    Type: Grant
    Filed: November 20, 1979
    Date of Patent: March 10, 1981
    Assignee: Bayer Aktiengesellschaft
    Inventors: Peter Hohlein, Jochen Schoeps
  • Patent number: 4251410
    Abstract: The reaction between (a) a polymerisate of acrylamide and/or methacrylamide and optionally of one or more further types of polymerizable ethylenic-unsaturated monomers, (b) formaldehyde, (c) a secondary amine and (d) a functional derivative of an acid having stabilizing properties against further polymerization of (a) and containing in the functional radical at least one NH group capable of entering into equilibrium reaction with formaldehyde under the reaction conditions used, e.g. urea, under neutral or basic conditions and in certain molar ratios, produces products, which in free base, acid addition salt or quaternary ammonium salt form are useful as flocculation agents, and particularly as retention aids for paper manufacture.
    Type: Grant
    Filed: November 24, 1978
    Date of Patent: February 17, 1981
    Assignee: Sandoz Ltd.
    Inventors: Bernard Danner, Hans Gerber, Helmut Pummer
  • Patent number: 4220576
    Abstract: 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: Grant
    Filed: July 25, 1978
    Date of Patent: September 2, 1980
    Assignee: Societe d'Investissement pour le Developpement des Appareils Menagers
    Inventor: Francois Tatard
  • Patent number: 4198471
    Abstract: The combination of a thermoplastic polymer and a thermosetting polymer, provides a pigment system for producing coated printing papers. The thermoplastic polymer and thermosetting polymer, suspended in well-known coating binders and carriers, is applied to the web substrate on a standard paper machine. The amount of thermoset, preferably at least about 25% by weight of the pigment solids, improves ink receptivity and allows adjustable control of finished paper gloss. The amount of thermoset added to the pigment system is limited, however, preferably below about 75% by weight of the pigment solids, so that the finished printing paper obtains a Gardner 75.degree. gloss of at least about 40, at calendering pressures of less than 500 PLI.
    Type: Grant
    Filed: April 4, 1978
    Date of Patent: April 15, 1980
    Assignee: Weyerhaeuser Company
    Inventor: George R. Nelson
  • Patent number: 4187258
    Abstract: A primer composition comprises an oil-free saturated polyester resin, an aminoplast curing agent for the polyester, and a thermoplastic acrylic polymer. The primer is used as a bond coat to adhere an acrylic polymer dispersion topcoat to a metal base.
    Type: Grant
    Filed: April 6, 1973
    Date of Patent: February 5, 1980
    Assignee: PPG Industries, Inc.
    Inventor: Martin J. Simon
  • Patent number: 4185045
    Abstract: A powdery coating composition comprising (1) 10 to 40% by weight of a solid cross-linking agent having a softening point of 50.degree. to 120.degree. C. and prepared by heating 40 to 75% by weight of an acrylic resin having free hydroxyl groups and 60 to 25% by weight of an alkoxyaminotriazine at 50.degree. to 120.degree. C., and (2) 90 to 60% by weight of a base resin having a softening point of 60.degree. to 130.degree. C. and an acid value of up to 30 and containing 0.4 to 2.0 moles of free hydroxyl groups per kilogram of the resin, the alkoxyaminotriazine having 0 to 1 non-methylolated NH bond per triazine ring, at least 80% of the methylol groups of the alkoxyaminotriazine having been etherified with an aliphatic or alicyclic alcohol or ethylene glycol monoalkyl ether.
    Type: Grant
    Filed: February 24, 1978
    Date of Patent: January 22, 1980
    Assignee: Kansai Paint Company, Limited
    Inventors: Ichiro Yoshihara, Tadashi Watanabe, Osamu Iwase
  • Patent number: 4179428
    Abstract: Process for producing water-emulsifiable paint binders based on select blends of alkyd resins and the improved emulsifiable paint binders therefrom are described. 30 to 75 percent by weight of aminoaldehyde resin is first reacted with 25 to 70 percent by weight of polyethylene glycols having an average molecular weight of from 500 to 3,000. Thereafter, 5 to 30 percent by weight of the polyethylene glycol modified aminoaldehyde resin is reacted with a blend of alkyd resins, one of the alkyd resins of the blend having a low acid number and another of the alkyd resins of the blend having a high acid number. The co-condensate of modified aminoaldehyde resin and alkyd resins when emulsified in water provides an emulsion with fine particles and excellent stability, rendering the emulsion particularly suitable for use in stoving paints.
    Type: Grant
    Filed: May 19, 1977
    Date of Patent: December 18, 1979
    Assignee: Vianova Kunstharz, A.G.
    Inventors: Bertram Zuckert, Wolfgang Schmut, Klaus Behmel
  • Patent number: 4178325
    Abstract: Resinous coating compositions of low volatile solvent content are provided which are sufficiently fluid to permit effective application, and which cure on baking at low temperature to provide hard stain- and detergent-resistant coatings of outstanding flexibility. These are made by copolymerizing monoethylenic monomers including monoethylenic monomer having a functional group reactive with N-methylol functionality and selected from carboxylic acid, hydroxy and amide groups, the copolymerization being carried out in a solvent solution containing a major proportion of liquid bishydroxy ethyl ether of a bisphenol, alone or together with the corresponding bishydroxy propyl ether. The copolymer solution has added thereto an aminoplast resin to provide a stable solution in which proportions are important so that coatings can be easily applied and cured to provide the desired characteristics without liberating excessive amounts of volatile material.
    Type: Grant
    Filed: January 3, 1978
    Date of Patent: December 11, 1979
    Assignee: DeSoto, Inc.
    Inventor: Kazys Sekmakas