Nonaldehyde Or Nonaldehyde Derivative Heterocyclic Compound Contains An Oxygen Atom As A Ring Member Of The Heterocyclic Compound Patents (Class 528/249)
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Patent number: 5098787Abstract: There are disclosed a modified oriented polyacetal product, the surface of said product being coated partly or entirely with a phenolic compound-polyacetal composite layer, the application thereof and a process for preparing the same.Type: GrantFiled: October 27, 1988Date of Patent: March 24, 1992Assignee: Asahi Kasei Kogyo Kabushiki KaishaInventors: Tamikuni Komatsu, Tadao Kanuma
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Patent number: 5071952Abstract: Iodoisocyano, iodourea and oxazole modified 1,3 dioxep-5-ene ring monomers are synthesized and used in copolymerization reactions with trioxane to produce acetal copolymers with backbone functional groups. The invention also concerns processes for the production of acetal copolymers containing iodourea and oxazole functional groups from acetal copolymers with backbone double bonds.Type: GrantFiled: April 13, 1988Date of Patent: December 10, 1991Assignee: Hoechst Celanese CorporationInventors: Nan-Loh Yang, Andrew Auerbach, James L. Paul, Rose Pesce
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Patent number: 5055547Abstract: The present invention relates to copolyethers comprising copolymers of 7,oxa-bicyclo(2,2,1)heptane, and its alkyl-derivatives, with one or more single-ring or condensed-rings cycloaliphatic ethers, comprising the characteristic group; ##STR1## wherein R' is hydrogen and R" is H, a halogen, or an alkyl radical containing a small number of carbon atoms, and which may also be halogen-substituted.If the ether contains one ring only, it contains from 5 to 12 atoms in the ring, and if it contains a condensed-ring system, it contains a total number of from 10 to 18 atoms in the rings.Those copolyethers show a anisotropic behaviour in the molten state, and therefore have liquid-crystal properties.Type: GrantFiled: May 10, 1989Date of Patent: October 8, 1991Assignee: Montedison S.p.A.Inventors: Leonardo Fiore, Giuseppe Motroni, Mauro Maritano
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Patent number: 4977238Abstract: Precondensates of urea and formaldehyde containing monomethylolacrylamidomethyleneurea are produced from pure acrylamidomethyleneurea and urea/formaldehyde precondensate or from the starting substances used for the manufacture of acrylamidomethyleneurea with formaldehyde. They are useful additives for aminoplastic resins, which in turn may be used as glue in the manufacture of chipboard sheets.Type: GrantFiled: November 29, 1989Date of Patent: December 11, 1990Assignee: Norsolor S.A.Inventors: Roger Garrigue, Jack Lalo
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Patent number: 4977237Abstract: New process for manufacturing urea/formaldehyde resins.New process, according to which a urea/formaldehyde precondensate containing monomethylolacrylamidomethyleneurea is added to the urea/formaldehyde resins.Applications for the gluing of wood, in aminoplastic resins.Type: GrantFiled: November 29, 1989Date of Patent: December 11, 1990Assignee: Norsolor S.A.Inventors: Roger Garrigue, Jack Lalo
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Patent number: 4975519Abstract: Cationic polymerization of trioxane and a mixture of ester derivatives of .alpha.,.alpha.- and .alpha.,.beta.-isomers of glycerol formal yields acetal terpolymers having pendant functional groups (i.e., ester groups, or hydroxyl groups obtained by hydrolyzing ester groups, pendent from the polymer's backbone). The glycerol formal monomers employed in this invention may include functional groups selected from ester moieties which are protected from, and thus survive, the polymerization process with trioxane. These groups may then be present as functional reactive sites for the subsequent synthesis of block polymers and/or to chemically bind modifiers to the acetal terpolymer backbone, for example.Type: GrantFiled: May 12, 1989Date of Patent: December 4, 1990Assignee: Hoechst Celanese CorporationInventors: Nan L. Yang, Andrew Auerbach, Rose Pesce, Jerry A. Broussard, James L. Paul
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Patent number: 4968774Abstract: Amino-plastic resins soluble in water of which the nitrogenous derivative is chosen from the group comprising urea, 1,3-dimethyl-urea, ethyleneurea, 4,5-dihydroxy-ethyleneurea or their mixtures and the aldehyde derivative is a mixture of from 1 to 99% by weight of glyoxal and from 99 to 1% by weight of glyoxal monoacetal of formula (RO).sub.2 CH--CHO; R=C.sub.1 -C.sub.4 alk, their ethers and their applications in particular with cellulosed fibre treatment.Type: GrantFiled: January 10, 1990Date of Patent: November 6, 1990Assignee: Societe Francaise HoechstInventors: Wilhelm Didier, Loison Sylvie, Blanc Alain
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Patent number: 4956445Abstract: Acetal polymer having a high degree of polymerization is obtained using a catalyst of a heteropoly acid or an acid salt thereof in a small amount. The catalyst is represented by formula:H.sub.x [M.sub.m .multidot.M'.sub.n O.sub.l ]yH.sub.2 O (1)whereinM: a central element constituted of at least one member selected from among P, B, Si, Ge, Sn, As, Sb, U, Mn, Re, Cu, Ni, Ti, Co, Fe, Cr, Th and Ce,M': at least one ligand element selected from among W, Mo, V and Nb, m: 1 to 10, n: 6 to 40, l: 10 to 100, x: an integer of 1 or above, and y: 0 to 50.Type: GrantFiled: December 12, 1988Date of Patent: September 11, 1990Assignee: Polyplastics Co., Ltd.Inventors: Kaoru Yamamoto, Hiroyuki Sano, Shuichi Chino
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Patent number: 4954607Abstract: A ferromagnetic organic substance having a triaryl methane structure and a free radical concentration of methine carbon positions of at least 10.sup.17 radicals/g, preferably at least 10.sup.18 radials/g, is provided by polycondensing a condensed polynuclear aromatic compound or an electron donating group substituted monocyclic aromatic compound with an aromatic aldehyde in the presence of an acid catalyst, to produce a precondensate having a softening point between 30.degree. C. and 120.degree. C. and being soluble in various organic solvents, and subjecting the resulting precondensate to a dehydrogenation treatment and a purification treatment, followed by molding.Type: GrantFiled: August 15, 1989Date of Patent: September 4, 1990Assignee: Gunma UniversityInventors: Sugio Otani, Akira Kojima, Michiya Ota
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Patent number: 4952667Abstract: Provided is a copolymer having a repeating unit represented by the general formula ##STR1## wherein Ar represents ##STR2## wherein R.sup.1 represents hydrogen or a hydrocarbon group having 1 to 20 carbon atoms, R.sup.2 represents hydrogen, a hydrocarbon group having 1 to 20 carbon atoms, furyl, pyridyl, chlorophenyl, nitrophenyl or methoxyphenyl, n is 1 or more and an electroactive polymer obtained by doping the above copolymer.Type: GrantFiled: June 8, 1988Date of Patent: August 28, 1990Assignee: Nippon Oil Company, LimitedInventors: Yutaka Shikatani, Hobuyuki Kuroda, Naoki Kataoka, Yoshiyuki Shimo, Kazuo Matsuura, Etsuo Kawamata, Hiroshi Kobayashi
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Patent number: 4937312Abstract: There are provided new elastomeric copolymers of about 15 to 45 mol %, preferably about 25 to 35 mol % trioxane, about 55 to 85 mol %, preferably about 65 to 75 mol % of 1,3-dioxolane, said mol percents based on the total of trioxane and 1,3-dioxolane, and about 0.005 to 0.15 wt. %, preferably about 0.05 to 0.12 wt. % of 1,4-butanediol diglycidyl ether or butadiene diepoxide as a bifunctional monomer, based on the total weight of copolymer. The elastomeric copolymers may be prepared by mixing said monomers in a substantially dry state and under an inert atmosphere with a cationic polymerization catalyst, e.g., p-nitrobenzenediazonium tetrafluoroborate. The elastomeric copolymers have a strong interaction with moldable, crystalline acetal polymers comprising at least 85 mol % of polymerized oxymethylene units and may be used as a blending agent with such crystalline acetal polymers or as a bonding agent to improve the adhesiveness of the crystalline acetal polymer to other materials.Type: GrantFiled: December 11, 1989Date of Patent: June 26, 1990Assignee: Hoechst Celanese Corp.Inventors: George L. Collins, Kurt F. Wissbrun, Hongkyu Kim
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Patent number: 4906728Abstract: The invention concerns a method for producing an acetal copolymer containing backbone bromo-functional groups comprising copolymerizing trioxane with 5,6,-dibromo-1,3-dioxepene. The invention also concerns methods of modifying acetal copolymers containing bromo-functional groups and the copolymers produced by the methods of the invention.Type: GrantFiled: April 13, 1988Date of Patent: March 6, 1990Assignee: Hoechst Celanese Corp.Inventors: Nan-Loh Yang, Andrew Auerbach, James L. Paul, Rose Pesce, Shian S. Wang
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Patent number: 4900783Abstract: Acetal copolymers of trioxane and 1,3-dioxep-5-ene having a high degree of crystallinity and specific mole percent incorporations of 1,3-dioxep-5-ene are synthesized.The invention also provides a process for producing highly crystalline acetal copolymers by copolymerizing triozane and 1,3-dioxep-5-ene and precipitating the copolymer product from solution.The copolymers show much improved stability against halogen degradation.Type: GrantFiled: April 13, 1988Date of Patent: February 13, 1990Assignee: Hoechst Celanese CorporationInventors: Nan-Loh Yang, Andrew Auerbach, James L. Paul, Rose Pesce, Shian S. Wang
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Patent number: 4898925Abstract: There are provided new elastomeric copolymers of about 15 to 45 mol %, preferably about 25 to 35 mol % trioxane, about 55 to 85 mol %, preferably about 65 to 75 mol % of 1,3-dioxolane, said mol percents based on the total of trioxane and 1,3-dioxolane, and about 0.005 to 0.15 wt. %, preferably about 0.05 to 0.12 wt. % of 1,4-butanediol diglycidyl ether or butadiene diepoxide as a bifunctional monomer, based on the total weight of copolymer. The elastomeric copolymers may be prepared by mixing said monomers in a substantially dry state and under an inert atmosphere with a cationic polymerization catalyst, e.g, p-nitrobenzenediazonium tetrafluoroborate. The elastomeric copolymers have a strong interaction with moldable, crystalline acetal polymers comprising at least 85 mol % of polymerized oxymethylene units and may be used as a blending agent with such crystalline acetal polymers or as a bonding agent to improve the adhesiveness of the crystalline acetal polymer to other materials.Type: GrantFiled: September 12, 1988Date of Patent: February 6, 1990Assignee: Hoechst Celanese CorporationInventors: George L. Collins, Kurt F. Wissbrun, Hongkyu Kim
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Patent number: 4816107Abstract: Oxymethylene polymer bonded articles, such as multilayer laminates, are disclosed. Such articles are prepared by bonding together at least two articles shaped or molded from crystalline oxymethylene homo-, co- and terpolymers using, as an adhesive, a low Tg copolymer of trioxane and 1,3-dioxolane which have a dioxolane content greater than 65 mol percent and less than about 75 mol percent and an IV of from about 1.0 to about 2.3, and which are non-crystalline at room temperature or above.Type: GrantFiled: September 14, 1987Date of Patent: March 28, 1989Assignee: Hoechst Celanese Corp.Inventors: George L. Collins, Kurt F. Wissbrun
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Patent number: 4814424Abstract: An improved method of stabilizing a polyoxymethylene copolymer, which comprises(1) heat-melting a crude copolymer of trioxane and a cyclic ether and/or a cyclic acetal to form a first stabilized copolymer having a decomposition ratio (D.sub.220.sup.60), determined when it is heated at 220.degree. C. for 60 minutes in vacuum, of up to 2% by weight, and then(2) bringing the first stabilized copolymer into contact with steam containing 0.01 to 5% by weight of a basic compound at a temperature of at least 100.degree. C. but not exceeding the melting point of the copolymer to form a second stabilized copolymer.Type: GrantFiled: November 13, 1987Date of Patent: March 21, 1989Assignee: Mitsubishi Gas Chemical Company, Inc.Inventors: Takeo Suzumori, Isamu Masumoto, Mitsuo Nakagawa, Yukihiro Iha
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Patent number: 4806622Abstract: Polyacetal obtained by the polymerization of trioxane, for example, suspended in an organic solvent, in the presence of a comonomer (for example, ethylene oxide), is stabilized by hydrolysis in the heated state under pressure and then, after hydrolysis, the reaction mixture is depressurized to atmospheric pressure in order to release an aqueous phase containing the polymer and a vapor phase which contains formaldehyde and trioxane. According to the invention, the latter is recycled directly into the formaldehyde trimerization stage under reduced pressure.Type: GrantFiled: June 5, 1987Date of Patent: February 21, 1989Assignee: Solvay & Cie (Societe Anonyme)Inventor: Nicolas Hardy
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Patent number: 4739032Abstract: Compositions comprising an oligomer which (a) comprises the repeating unit (AR - CHR), and where Ar is an aromatic group and R is hydrogen or a hydrocarbyl group of hydrogen, (b) has pendant and/or terminal groups which include inter alia acyloxymethyl, hydroxymethyl and carboxyl, and (c) has a functionality between 0.5 and 10, and processes for the preparation thereof are described. These compositions may be used in dental, electrical and electronic applications.Type: GrantFiled: March 30, 1987Date of Patent: April 19, 1988Assignee: Imperial Chemical Industries plcInventor: Michael E. B. Jones
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Patent number: 4729851Abstract: Polymers with conjugated double bonds having heterocyclic and/or carbocyclic rings or ring systems in which said rings or ring systems are linked with one another in pairs via a carbon atom as a bridge member. Polymers of the invention have, at least five of said ring or ring-systems. The polymers may be prepared by reacting at least one compound of the formula ##STR1## with at least one compound of the formulaH--R" --H (II)in whichX represents fluorine, chlorine, bromine, iodine, hydroxyl, sulfate radicals or radicals of the formula --OR, --SO.sub.3 F, --SO.sub.3 R or --NR.sub.2 ;X.sub.2 represents two radicals X, or an oxygen atom of a carbonyl group;R represents the same or different alkyl radicals having from 1 to 8 carbon atoms, phenyl and a hydrogen atom; andR" represents the same or different monocyclic or polycyclic (hetero) arylene radicals optionally substituted by hydrocarbon radicals having 1 to 8 carbon atoms.Type: GrantFiled: August 21, 1986Date of Patent: March 8, 1988Assignee: Wacker-Chemie GmbHInventors: Hermann Braunling, Reinhard Jira
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Patent number: 4717762Abstract: Electroactive polymers of the structure and formula ##STR1## in their neutral and ionized forms, where the backbone group R.sub.b is selected from or is a combination of five- and six-membered rings capable of aromatic and quinonoid bonding structures, R.sub.s is selected from aliphatic, aromatic and heterocyclic groups, x and y, are positive integers from 1 to 5 and m is a positive integer from 1 to about 10,000, together with a method of making them are disclosed.Type: GrantFiled: September 8, 1986Date of Patent: January 5, 1988Assignee: Honeywell Inc.Inventor: Samson A. Jenekhe
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Patent number: 4711946Abstract: Electroactive organic polymeric materials of poly(heterocycle diyl methylenes) containing alternating heterocyclic conjugated segments of varying sizes and methylene or substituted methylenes in the main chain and random copolymers of such poly(heterocycle diyl methylenes) together with a method of making them are disclosed.Type: GrantFiled: September 8, 1986Date of Patent: December 8, 1987Assignee: Honeywell Inc.Inventors: Samson A. Jenekhe, Marcia K. Hansen
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Patent number: 4691000Abstract: Copolymers containing oxymethylene and 2-fluoromethoxyethylene repeat units. These copolymers, of improved heat stability, may be prepared by copolymerizing trioxane with a derivative of a cyclic ether whose molecule contains at least two adjacent carbon atoms and in which an oxymethylene group carries a fluoromethyl substituent, especially epifluorohydrin.Type: GrantFiled: April 11, 1986Date of Patent: September 1, 1987Assignee: Solvay & Cie. (Societe Anonyme)Inventors: Andre Collart, Fredy Declerck
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Patent number: 4680375Abstract: Tricarbocyanine polymeric dyes have formulae I and II: ##STR1## where Y can be ##STR2## --S--, --Se-- or --O--, A can be ##STR3## in which R.sup.19 can be alkyl or --Cl, and p can be 0 or 1, R.sup.6 and R.sup.7 independently can be alkyl of (C.sub.1 -C.sub.30), preferably (C.sub.1 -C.sub.18),R.sup.4 and R.sup.5 independently can be --H, C.sub.6 H.sub.5 SO.sub.2 --, or CF.sub.3 SO.sub.2 --,Z can be --SO.sub.2 --, --CH.sub.2).sub.m, or vinylene,W can be I.sup.-, Br.sup.-, Cl.sup.-, ClO.sub.4.sup.-, PECHS.sup.- (polyethylcyclohexylsulfonate), F.sub.3 CSO.sub.3.sup.- (trifluoromethanesulfonate), or other commonly used dye anions,m is an integer of 1 to 20, andn is an integer of 5 to 10,000.Type: GrantFiled: March 11, 1985Date of Patent: July 14, 1987Assignee: Minnesota Mining and Manufacturing CompanyInventor: Mohamed A. Elmasry
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Patent number: 4634723Abstract: A binder material is disclosed formed from furfuryl alcohol suitable for the preparation of molded bodies and cores for molding for the foundry industry based on the following composition:40-60 weight percent higher molecular weight furfuryl alcohol formaldehyde condensation product28-40 weight percent lower molecular weight furfuryl alcohol formaldehyde condensation product12-25 weight percent 2,5-bis-hydroxymethylfuran0-8 weight percent furfuryl alcohol.Type: GrantFiled: March 22, 1985Date of Patent: January 6, 1987Assignee: Rutgerswerke AktiengesellschaftInventors: Arno Gardziella, Alois Kwasniok, Harald Heerdegen, Gerhard Janocha
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Patent number: 4543374Abstract: A binder composition for foundry molds and cores comprising a furan based binder, a metal sulfonate curing catalyst therefor and a cure promoter selected from copper chloride, zinc chloride and iron chloride.Type: GrantFiled: November 8, 1984Date of Patent: September 24, 1985Assignee: QO Chemicals, Inc.Inventor: James E. Menting
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Patent number: 4540770Abstract: The present invention relates to polystyrylpyridine-type resins having increased toughness, and composite materials containing these resins.The resin of the invention contains a polycondensation product of at least two reactive methylated substituents, the said resin having the following general formula (I): U.sub.x V.sub.y W.sub.z in which: ##STR1## U denotes the grouping ##STR2## V denotes the grouping ##STR3## W denotes the grouping in which:R, R.sub.1 are identical or different and denote a chain segment consisting of hydrocarbon radicals and able to contain hetero atoms,A, A.sub.1 are identical or different and denote an atom or group forming a bridge between the segment R and an aromatic nucleus of the styrylpyridine chain, containing stereomobile bonds,R.sub.2 denotes hydrogen, or a methyl or ethyl radical, x, y, z denote integers that may be equal to 0, the sum y+z being at least equal to 1.Advantageously, A, A.sub.1 denotes an oxygen atom.Type: GrantFiled: August 23, 1984Date of Patent: September 10, 1985Assignees: Societe Nationale des Poudres et Explosifs, Office National d'Etudes et de Recherches AerospatialesInventor: Sammy Chevallier
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Patent number: 4477652Abstract: Condensation polymers prepared by reaction of a cyclic diol with a diether or aldehyde, or both, optionally with a branching agent, such as bis(4-hydroxycyclohexyl)propane with paraformaldehyde, or a diether such as methylene-dimethyl ether, or both, optionally with a branching agent such as a pentaethritol, in the presence of an acidic catalyst such as p-toluenesulfonic acid.Type: GrantFiled: August 26, 1983Date of Patent: October 16, 1984Assignee: Phillips Petroleum CompanyInventor: H. Wayne Hill, Jr.
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Patent number: 4474636Abstract: In the fabrication of composite articles, a binder containing hydroxymethylfurfural is employed.Type: GrantFiled: April 29, 1983Date of Patent: October 2, 1984Assignee: QO Chemicals, Inc.Inventor: Ben R. Bogner
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Patent number: 4399272Abstract: A process for producing a polyacetal copolymer, which comprises copolymerizing formaldehyde and a compound selected from the group consisting of alkylene oxides, poly(alkylene oxides), cyclic formals and poly (cyclic formals) in the presence of a Lewis acid and an anionic polymerization catalyst with the exception of metal chelate compounds.Type: GrantFiled: November 4, 1980Date of Patent: August 16, 1983Assignee: Asahi Kasei Kogyo Kabushiki KaishaInventors: Hisaya Sakurai, Minoru Hamada, Kazuhiko Matsuzaki, Muneaki Aminaka
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Patent number: 4383100Abstract: Oligomeric formal diols are prepared by coupling segments of copolyether glycols with formaldehyde. The formal diols are useful in preparing polyurethanes.Type: GrantFiled: January 19, 1982Date of Patent: May 10, 1983Assignee: E. I. Du Pont de Nemours and CompanyInventor: Engelbert Pechhold
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Patent number: 4380620Abstract: In a process for preparing polyoxymethylenes by polymerizing formaldehyde in the presence of an anionic polymerization catalyst, the use of a polyhydric alcohol having at least three alcoholic hydroxyl groups in the molecule permits the preparation of polyoxymethylenes which have desired molecular weights along with improved melt fluidity and which are excellent in processability.Type: GrantFiled: August 12, 1981Date of Patent: April 19, 1983Assignee: Asahi Kasei Kogyo Kabushiki KaishaInventors: Kazuhiko Matsuzaki, Minoru Hamada, Hisaya Sakurai
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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: 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: 4343929Abstract: A process for producing a polyacetal homopolymer or copolymer which comprises continuously feeding a liquid starting mixture containing molten trioxane and a catalyst and optionally a comonomer through a feed opening of a reactor, said reactor being a continuously stirring-type mixer having two stirring shafts having a plurality of plate-like paddles fixed thereto the cross-section of each of said paddles taken perpendicularly of the axial direction of the stirring shaft having a shape of a convex lens, an ellipse or a quasipolygon inscribing a phantom circle at each vertex, one of said paddles facing another paddle fixed to the other stirring shaft and said one paddle being positioned such that it rotates while the edges thereof keep a slight clearance from the inner surface of the barrel and the other paddle; polymerizing the starting mixture while moving it toward the discharge opening by the rotation of the paddles, the improvement wherein the profiles of the paddles are changed, or the arrangement of theType: GrantFiled: October 23, 1980Date of Patent: August 10, 1982Assignee: Mitsubishi Gas Chemical Co., Inc.Inventors: Akitoshi Sugio, Kazuyoshi Taka, Akira Amemiya, Tomotaka Furusawa, Mutsuhiko Takeda, Katsumasa Tanaka, Toshikazu Umemura, Yoshihiro Ono
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Patent number: 4320043Abstract: Binders for foundry core sands and the like comprising furfuryl alcohol and an aromatic dialdehyde and optionally an aromatic alcohol.Type: GrantFiled: January 12, 1981Date of Patent: March 16, 1982Assignee: The Quaker Oats CompanyInventor: Hugh C. Anderson
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Patent number: 4316935Abstract: A foam characterized by the presence of isocyanurate groups which is the reaction product of a polymethylene polyphenyl isocyanate, such as that of the formula: ##STR1## wherein n is an integer from 1 to 8 inclusive, and a furan resin of the formula: ##STR2## wherein R is --CH.sub.2 -- or --CH.sub.2 --O--CH.sub.2 --, and the average value of m is such that the furan resin has a viscosity of up to 50,000 centipoises at 25.degree. C. The foam exhibits a low friability and an improved capacity to maintain its structural integrity when exposed to fire, and can be used in structural laminates.Type: GrantFiled: November 14, 1980Date of Patent: February 23, 1982Assignee: The Celotex CorporationInventor: Ernest K. Moss
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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: 4279793Abstract: A water hardenable mixture comprising a blocked polyamine and cyclic anhydride compounds.Type: GrantFiled: December 3, 1979Date of Patent: July 21, 1981Assignee: Bayer AktiengesellschaftInventors: Wolfgang Wellner, Manfred Hajek
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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: 4250282Abstract: A melamine-formaldehyde resin useful for making coated wood-based materials and laminates and having a prolonged pot life comprises (a) melamine-formaldehyde precondensation product wherein the molar ratio of melamine:formaldehyde is 1:1.4 to 1:2.6 and (b) 0.1 to 1.0% by weight based on total solids, of an amine of the formula ##STR1## wherein R.sup.1 and R.sup.2 are each identical or different alkyl having 1 to 4 carbon atoms and R.sup.3 is 2-hydroxyethyl, 2-(2-hydroxyethoxy)-ethyl, 3-hydroxy-1-propyl, 3-hydroxy-2-propyl, 2,3-dihydroxypropyl or--CH.sub.2 CH.sub.2 --NR.sup.1 R.sup.2,wherein said amine may be present entirely or partially in the form of its reaction product with the melamine-formaldehyde pre-condensation product.Type: GrantFiled: November 13, 1979Date of Patent: February 10, 1981Assignee: Cassella AktiengesellschaftInventors: Peter Dorries, Steffen Piesch, Alfons Wolf
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Patent number: 4243780Abstract: A method for preparing a carbamide-furan resin comprises reacting a urea-formaldehyde resin unlimitedly soluble in water with urea at a temperature within the range of from 50.degree. to 85.degree. C. and modifying the resulting urea-formaldehyde resin with furyl alcohol at a ratio therebetween expressed in parts by weight equal to 100:20-200 respectively at a temperature within the range of from 50.degree. to 85.degree. C., pH of from 7.2 to 8.9 simultaneously with dehydration of the product being modified under vacuum.Type: GrantFiled: July 11, 1978Date of Patent: January 6, 1981Inventors: Anatoly A. Kruglikov, Militina A. Nikolaeva, Jury P. Vasin, Zolya Y. Itkis, Vladimir A. Shirinkin, Ida A. Zimina, Vladimir A. Strupinsky, Valery V. Koposov
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Patent number: 4224435Abstract: In a method for mixing a trioxane, a polymerization catalyst and a comonomer for producing of oxymethylene copolymers by continuously copolymerizing trioxane with a cyclic ether or a cyclic acetal as a comonomer, the improved method comprises following steps:spouting a comonomer and a polymerization catalyst from nozzle openings which are set adjacent to each other,while washing both openings at the tip end of the nozzles with a flow of trioxane,whereby mixing said comonomer, said polymerization catalyst and said trioxane,and then feeding the mixture to a polymerization reactor to effect copolymerization.The raw materials are mixed together before they are fed to the polymerization reactor, and no clogging trouble at the tip end of the nozzle for feeding a polymerization catalyst occurs. Further the resulting copolymer has a much superior heat stability.Type: GrantFiled: June 13, 1979Date of Patent: September 23, 1980Assignee: Mitsubishi Gas chemical Company, Inc.Inventors: Akitoshi Sugio, Akira Amamiya, Tadashi Kunii, Tomotaka Furusawa, Mutsuhiko Takeda, Katsumasa Tanaka, Toshikazu Umenura, Kiyokazu Kawaguchi
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Patent number: 4197385Abstract: A resin for coating sand and a resin-coated sand produced therefrom wherein the resin is prepared by incorporating furan into a phenolic novolak resin. In the preferred practice, the resin is produced by reaction of furfuryl alcohol with a phenolic compound at an acid pH to give a furfuryl-phenolic intermediate in a first step, and then, in a second step, reacting the furfuryl-phenolic intermediate with a lower aliphatic aldehyde to produce the resin. The resin-coated sands of the present invention provide unexpectedly improved shakeout and collapsibility characteristics in the shell process.Type: GrantFiled: August 11, 1978Date of Patent: April 8, 1980Assignee: CPC International Inc.Inventor: Robert Laitar
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Patent number: 4187355Abstract: This invention relates to a process for the production of novel polyalkylene glycol ethers based on a mixture of polyhydric alcohols, hydroxyaldehydes and hydroxy ketones produced by the auto-condensation of formaldehyde hydrate (formose). The improvement realized is in the use of an acid catalysis rather than the normal base catalysis. The new polyether polyols are valuable starting materials for the production of polyurethane foams.Type: GrantFiled: August 17, 1978Date of Patent: February 5, 1980Assignee: Bayer AktiengesellschaftInventor: Kuno Wagner
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Patent number: 4180646Abstract: The invention concerns orthoester and orthocarbonate polymers having a repeating mer comprising a hydrocarbon radical and a symmetrical dioxycarbon unit of the general formula: ##STR1## wherein R.sub.1 is a multivalent hydrocarbon radical, R.sub.2 and R.sub.3 are hydrocarbon radicals with at least one of R.sub.2 or R.sub.3 bonded to the dioxycarbon through an oxygen linkage, and which polymers are synthesized by reacting a polyol with an orthoester or orthocarbonate. The polymers are useful for making articles of manufacture, including devices and coatings for delivering beneficial agents.Type: GrantFiled: March 3, 1978Date of Patent: December 25, 1979Assignee: Alza CorporationInventors: Nam S. Choi, Jorge Heller
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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: 4158652Abstract: Compositions comprising an ester diol alkoxylate in conjunction with crosslinkers, or polycaprolactone polyols or derivatives thereof, or low molecular weight polyols, or isocyanates, or latexes have been produced that are useful as coatings, inks and adhesives.Type: GrantFiled: September 29, 1977Date of Patent: June 19, 1979Assignee: Union Carbide CorporationInventors: Joseph V. Koleske, Robert J. Knopf, Oliver W. Smith
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Patent number: RE31366Abstract: A melamine-formaldehyde resin useful for making coated wood-based materials and laminates and having a prolonged pot life comprises (a) melamine-formaldehyde precondensation product wherein the molar ratio of melamine:formaldehyde is 1:1.4 to 1:2.6 (b) 0.1 to 1.0% by weight based on total solids, of an amine of the formula ##STR1## wherein R.sup.1 and R.sup.2 are each identical or different alkyl having 1 to 4 carbon atoms and R.sup.3 is 2-hydroxyethyl, 2-(2-hydroxyethoxy)-ethyl, 3-hydroxy-1-propyl, 3-hydroxy-2-propyl, 2,3-dihydroxypropyl or--CH.sub.2 CH.sub.2 --NR.sup.1 R.sup.2,wherein said amine may be present entirely or partially in the form of its reaction product with the melamine-formaldehyde pre-condensation product.Type: GrantFiled: January 11, 1982Date of Patent: August 30, 1983Assignee: Cassella AktiengesellschaftInventors: Peter Dorries, Steffen Piesch, Alfons Wolf