Six-membered Heterocyclic Ring Contains At Least One Nitrogen Atom As A Ring Member Patents (Class 528/118)
  • Patent number: 4929708
    Abstract: Disclosed are epoxy resin compositions comprising a 1,1-bis(4-hydroxyaryl) lower alkane type epoxy resin, hydroquinone and a reaction catalyst, or a 1,1-bis(4-hydroxyaryl) lower alkane type epoxy resin and N-aminoalkyl-substituted piperazine or a modified product thereof. These epoxy resin compositions as prepared are in a liquid state and hence resin moldings can be manufactured therefrom by such a simple technique as casting. It is also possible to cure these resin compositions at a temperature below 150.degree. C., and the resin moldings obtained therefrom are tough and excellent in impact resistance as well as in heat resistance.
    Type: Grant
    Filed: November 26, 1986
    Date of Patent: May 29, 1990
    Assignee: Mitsui Sekiyu Kagaku Kogyo Kabushiki Kaisha
    Inventors: Kaoru Tominaga, Tadao Iwata
  • Patent number: 4826930
    Abstract: Novel melamine-poly(oxyethylene or oxypropylene) diamine condensates are prepared which have the formula: ##STR1## Wherein: R represents H or--NH--CHR'--(CH.sub.2).sub.x --[--O--CH.sub.2 --CHR"--].sub.n --O--(CH.sub.2).sub.x --CHR'--NH.sub.2R' represents H or --CH.sub.3,R" represents H or -CH.sub.3 or CH.sub.2 CH.sub.3,x represents an integer having a value of 1 or 2, andn is a number having an average value of about 1 to about 2.The melamine-poly(oxyethylene or oxypropylene) diamine condensates have utility as curing agents for epoxy resins.
    Type: Grant
    Filed: April 22, 1988
    Date of Patent: May 2, 1989
    Assignee: Texaco Chemical Company
    Inventors: Robert L. Zimmerman, Harold G. Waddill, George P. Speranza
  • Patent number: 4826616
    Abstract: A piezoelectric pressure-sensitive element comprising a dispersion of a dipolarly oriented ferroelectric ceramic powder in a cured product of a composition comprised of an epoxy resin having at least two epoxy groups in the molecules, a compound having defined numbers of amino groups, benzene rings, carbonyl groups and methylene groups, and a crosslinking agent. A methd for making such a piezoelectric pressure-sensitive element is also described, in which the resin composition comprising a ferroelectric ceramic powder is thermally cured and applied with an electric field at a high temperature to cause dipolar orientation of at least the ceramic powder.
    Type: Grant
    Filed: June 17, 1988
    Date of Patent: May 2, 1989
    Assignee: Toyokako Kabushiki Kaisha
    Inventors: Katsumi Tanino, Morihito Nakada
  • Patent number: 4812490
    Abstract: Molding compounds for encapsulating semiconductor components comprise filler-containing polyepoxy resins and a 1,3,5-tris(3-amino-4-alkylphenyl)-2,4,6-trioxohexahydrotriazine with a C.sub.1 to C.sub.4 alkyl radical as a hardener. The molding compounds are storage-stable and moldings manufactured therefrom meet the requirements for these materials.
    Type: Grant
    Filed: December 14, 1987
    Date of Patent: March 14, 1989
    Assignee: Siemens Aktiengesellschaft
    Inventors: Wolfgang Kleeberg, Heinz Hacker, Jurgen Huber, Dieter Wilhelm, Heinz K. Laupenmuhlen
  • Patent number: 4772643
    Abstract: A crosslinked and chain extended urethane-epoxy copolymer coating with high performance properties typical of two part urethane solution coatings results from cure at ambient temperatures (e.g. 70.degree. F.) when the two aqueous systems are merely mixed, stirred and spread at the site. One aqueous system is a dispersion of polyepoxides. The other aqueous system is a primary amine-terminated urethane oligomer in which no less than about 25% and no more than about 40% of the amine functionality is substituted by a salt of a volatile acid which aids dispersion of the oligomer. Minimal organic solvent is present, and as the acid evaporates, the primary amine is restored for linking with the epoxy groups.
    Type: Grant
    Filed: December 11, 1987
    Date of Patent: September 20, 1988
    Assignee: Tennant Company
    Inventors: G. Dale Ernst, Alan R. Schuweiler
  • Patent number: 4769402
    Abstract: Aqueous solutions containing an epoxy resin in which epoxy groups have been replaced with a group M.sup.+ [--CH(OH)--CH.sub.2 --X--Ar--NH--C(O)--Q--C(O)--O].sup.- in which M is an alkali metal or onium ion, Q an organic bridging group having 2-3 carbon atoms in the bridge, Ar is arylene, X is S, O, NH, N-alkyl, SO.sub.2 NH or SO.sub.2 N-allyl, and preparation thereof by reacting an N-substituted imide with an epxoy resin and reacting the adduct thus formed with a base in the presence of water.
    Type: Grant
    Filed: May 11, 1987
    Date of Patent: September 6, 1988
    Assignee: Shell Oil Company
    Inventors: Willem Karzijn, Petrus G. Kooijmans
  • Patent number: 4732961
    Abstract: A spherical particulate adhesive comprising particles of a partially amine cured epoxy resin as the main component and having an average particle size of 0.3 to 500 .mu.m, in which particles of the epoxy resin contain an at least partially compatible agent homogeneously in the interior thereof. This adhesive is a heat-curable adhesive and has a very high bonding force. After bonding, the adhesive is chemically stable and is especially preferably used for bonding in the field of electronic material, such as liquid crystal display devices, which are apt to be degraded by impurities and for which high-precision bonding is required.
    Type: Grant
    Filed: September 18, 1986
    Date of Patent: March 22, 1988
    Assignee: Toray Industries, Inc.
    Inventor: Koichiro Oka
  • Patent number: 4698401
    Abstract: A polyfunctional reaction product having functional phenolic OH groups is made available by reacting a phenol and an alkoxylated amino-aldehyde condensation product in the presence of a solvent and of an acid catalyst. This method makes it possible to prepare a polyfunctional phenolic reaction product which is soluble in organic solvents at a low ratio of phenolic OH groups to alkoxy groups without gelling. The reaction product is particularly useful as a curing agent for epoxy resins.
    Type: Grant
    Filed: September 9, 1985
    Date of Patent: October 6, 1987
    Assignee: The Dow Chemical Company
    Inventors: Dieter H. Klein, Raymond Koenig
  • Patent number: 4689390
    Abstract: A thermosetting epoxy resin composition of one pack type is provided which contains as indispensable constituents (I) an epoxy resin containing more than one adjacent epoxy groups on the average in the molecule and (II) a curing amount or curing-accelerating amount of a compound obtained by reacting (a) a specified amine/epoxy adduct with (b) phenolic resin(s) and/or polyhydric phenol compound(s) in a weight ratio of (a) to (b) of 1/0.1 to 1/0.8. The composition of the present invention has excellent storage stability and it is curable at a relatively low temperature to form a cured product having excellent mechanical strength, adhesiveness and water resistance.
    Type: Grant
    Filed: March 14, 1986
    Date of Patent: August 25, 1987
    Assignees: Asahi Denka Kogyo K.K., A.C.R. Co., Ltd.
    Inventors: Hiroshi Suzuki, Yutaka Asakawa, Akira Matsui
  • Patent number: 4683249
    Abstract: Amidines of the formula: ##STR1## wherein R.sub.1 and R.sub.2 are alkyl groups and the sum of the carbons in R.sub.1 and R.sub.2 is from 2 to 16 are produced by cyanoethylation of the lactam: ##STR2## wherein R.sub.1 and R.sub.2 are as defined above, followed by reduction and, finally, cyclization by dehydration. The compounds produced are useful for curing epoxy and urethane resins.
    Type: Grant
    Filed: April 8, 1986
    Date of Patent: July 28, 1987
    Assignee: San-Apro Kabushiki Kaisha
    Inventors: Keiichi Nakatani, Shohzo Ohnishi, Tadamasa Kurosaki
  • Patent number: 4682988
    Abstract: A grinding wheel is described which is bonded with a phenol formaldehyde resin based bond containing hexamethylenetetramine as the curing agent. The wheels are made by first wetting the abrasive with furfural in varying quantities relative to the amount of hexamethylenetetramine in the phenol formaldehyde resin. Different amounts of the curing agent require different specific amounts of furfural to produce optimum properties in the finished grinding wheel.
    Type: Grant
    Filed: October 25, 1983
    Date of Patent: July 28, 1987
    Assignee: Norton Company
    Inventors: Kesh S. Narayanan, Gordon E. Hickory
  • Patent number: 4665149
    Abstract: The thermal stability of epoxy resins prepared by dehydrohalogenating the reaction product of an epihalohydrin with an adduct prepared from a cyanuric halide and a polyhydric aromatic compound is improved by employing as the polyhydric aromatic compound one which is substituted with a hydrocarbyl group, a halogen atom or a nitro group at each ortho position relative to each aromatic hydroxyl group. These epoxy resins are useful in coating and molding compositions and in the preparation of laminates and composites.
    Type: Grant
    Filed: November 8, 1985
    Date of Patent: May 12, 1987
    Assignee: The Dow Chemical Company
    Inventors: James L. Bertram, Louis L. Walker
  • Patent number: 4661569
    Abstract: In a process of polymerizing ethylenically unsaturated compounds by polymerization of ethylenically unsaturated monomers in the presence of a free radical-forming initiator system and optionally customary protective colloids and/or emulsifiers and optional known additives in a reactor whose surfaces contact the reaction components, the improvement comprising providing the reactor surfaces with a coating that at least suppresses polymer deposit formation without effecting the color and quality of the polymer.
    Type: Grant
    Filed: February 12, 1985
    Date of Patent: April 28, 1987
    Assignee: Wacker-Chemie GmbH
    Inventors: Willi Kleine, Werner Frey, Albrecht Daweritz
  • Patent number: 4661568
    Abstract: The epoxy resin composition is comprised of an epoxy resin, a solvent and a hardener which is the reaction product of a hexa-alkyl ether of a methylol melamine having the general formula (I), wherein each R, independently, is an alkyl radical having from 1 to 4 carbon atoms with a polyhydric phenol and, optionally, a monohydric phenol, with the phenol compound(s) having been employed in an amount to provide a ratio of at least one reactive phenolic hydroxy group for each alkoxy group.
    Type: Grant
    Filed: September 9, 1985
    Date of Patent: April 28, 1987
    Assignee: The Dow Chemical Company
    Inventors: Raymond Koenig, Robert Urscheler, Dieter H. Klein
  • Patent number: 4658009
    Abstract: Disclosed is a 2-substituted-4,6-diamino-s-triazine/isocyanuric acid adduct represented by the following formula: ##STR1## wherein R stands for an alkyl group having 2 to 20 carbon atoms, an unsubstituted or cyano group-substituted aryl group, or a group of the formula R.sup.1 --CH.sub.2 CH.sub.2 -- in which R.sup.1 stands for an alkoxy group having up to 20 carbon atoms, an acyloxy group, an amino group, an N-substituted amino group, a benzotriazolyl group or a 2-alkylimidazolyl-(4)-dithiocarbonyl group, or by the following formula: ##STR2## wherein R.sup.2 stands for an alkylene group which may have an intervening imino or phenylene group.When this adduct is used for curing a polyepoxy resin, a cured product having good heat resistance, insulating property and adhesion and an excellent migration-preventing effect is formed.
    Type: Grant
    Filed: March 13, 1986
    Date of Patent: April 14, 1987
    Assignee: Shikoku Chemicals Corporation
    Inventors: Kazuo Kamagata, Toshiaki Yamada, Natsuo Sawa
  • Patent number: 4645818
    Abstract: Heat-curable compositions are described, comprising(a) an epoxide resin and(b) an effective amount of a urea of formulaAr--NHCON(R.sup.3)R.sup.4whereAr represents an aromatic group linked through an aromatic carbon atom to the indicated nitrogen atom and which is substituted by an amido group, andR.sup.3 and R.sup.4 each represent an aliphatic, cycloaliphatic, or araliphatic hydrocarbyl group, optionally substituted by a halogen atom or a hydroxyl group, or R.sup.3 may further represent a hydrogen atom, or R.sup.3 nd R.sup.4, together with the indicated nitrogen atom, may represent a heterocyclic ring of 3 to 5 carbon atoms which may also have one oxygen atom in the ring.Such amidoarylureas may be used alone with the epoxide resin, or in combination with an accelerator for the heat-curing reaction, selected from dicyandiamide, carboxylic acid hydrazides, succinimide, cyanoacetamide, 1-cyano-3-(lower alkyl)guanidines, imidazoles, and carboxylic acid-tertiary amine salts.
    Type: Grant
    Filed: December 11, 1985
    Date of Patent: February 24, 1987
    Assignee: Ciba-Geigy Corporation
    Inventor: Christopher M. Andrews
  • Patent number: 4631331
    Abstract: 2-(3H)-benzoxazolone and certain other benzo-N-heterocycles, as such or as their adduction products with epoxides, may be employed as organo-soluble, latent phenolic curing agents for epoxy resins. The phenolic hydroxyls are provided by rearrangement of the adduction products. Excellent shelf lives, pot lives, gel times and physical properties result.
    Type: Grant
    Filed: August 9, 1985
    Date of Patent: December 23, 1986
    Assignee: The Dow Chemical Company
    Inventor: Theodore L. Parker
  • Patent number: 4629769
    Abstract: 4,4,6-trimethylhexahydropyrimidine is partially reacted with a polyepoxide to form a room temperature Stable "B" stage epoxy resin system. This system may be stored at or near 25.degree. C. for long periods of time without further reaction. Heating of the partially cured material rapidly transforms the B-Stage product into a cross-linked material which is both temperature and chemically resistant.These properties make the product useful as preimpregnates with laminae such as cloth, paper, glass cloth and the like and for filament windings.
    Type: Grant
    Filed: September 30, 1985
    Date of Patent: December 16, 1986
    Assignee: Texaco Inc.
    Inventors: Harold G. Waddill, George P. Speranza
  • Patent number: 4614774
    Abstract: Disclosed is an isocyanuric acid adduct of 2-vinyl-4,6-diamino-S-triazine represented by the following structural formula: ##STR1## This adduct is prepared by heating 2-vinyl-4,6-diamino-S-triazine and isocyanuric acid in the presence of water, preferably by using sodium sulfide as a polymerization inhibitor. This adduct is valuable as a hardening agent for an epoxy resin.
    Type: Grant
    Filed: July 25, 1985
    Date of Patent: September 30, 1986
    Assignee: Shikoku Chemicals Corporation
    Inventors: Natsuo Sawa, Takeshi Masuda, Takashi Mizui
  • Patent number: 4611046
    Abstract: This invention is directed to hydroxyl terminated azomethines formed by reacting aromatic hydroxyl aldehydes or ketone compounds with diamines. These azomethines may be reacted with epoxy resin to produce polymeric material having high glass transition temperatures.
    Type: Grant
    Filed: December 9, 1985
    Date of Patent: September 9, 1986
    Assignee: Ford Motor Company
    Inventor: Mohinder S. Chattha
  • Patent number: 4609719
    Abstract: This invention is directed to hydroxyl terminated azomethines formed by reacting aromatic dialdehydes or aromatic diketones with hdyroxyl-amino compounds. These azomethines may be reacted with epoxy resin to produce polymeric material having high glass transition temperatures.
    Type: Grant
    Filed: December 20, 1985
    Date of Patent: September 2, 1986
    Assignee: Ford Motor Company
    Inventor: Mohinder S. Chattha
  • Patent number: 4608300
    Abstract: Fibre composite systems, in particular fibre composite laminates, can be prepared advantageously from a fibre composite impregnated with a curable epoxide resin matrix containing:(a) a liquid epoxide resin or a liquid mixture of epoxide resins,(b) an aliphatic or cycloaliphatic primary monoamine and/or disecondary diamine and(c) a tertiary amine which cures by catalysis or(d) a cycloaliphatic diamine or an aliphatic diamine or polyamine, containing not more than one sterically unhindered primary amino group,by crosslinking and curing the resin matrix below 120.degree. C.
    Type: Grant
    Filed: June 11, 1984
    Date of Patent: August 26, 1986
    Assignee: Ciba-Geigy Corporation
    Inventor: Urs Gruber
  • Patent number: 4607069
    Abstract: A solvent-free curable composition has a long shelf life and consists ofA 100 parts by weight of an epoxy resin andB from 10 to 100 parts by weight of, as a curing agent for the epoxy resin, an aromatic diamine containing ##STR1## groups, with or without C from 0.01 to 5 parts by weight of an accelerator, the curing agent for the epoxy resin being finely dispersed in the latter and preferably having a particle size of less than 10 .mu.m. The preferred epoxy resin curing agent is 4,4'-diaminodiphenyl ketone. The curable composition is used in particular for the preparation of fiber-reinforced materials.
    Type: Grant
    Filed: July 3, 1985
    Date of Patent: August 19, 1986
    Assignee: BASF Aktiengesellschaft
    Inventors: Helmut Tesch, Manfred Heym, Walter Doerflinger, Herbert Stutz, Peter Neumann, Dietmar Nissen, Gerhard Schaefer
  • Patent number: 4593069
    Abstract: An epoxy resin composition comprising an epoxy resin, either 2-vinyl-4,6-diamino-s-triazine or 2-vinyl-4,6-diamino-s-triazine/isocyanuric acid adduct, and at least one compound selected from dicyandiamide, polyvinyl-p-phenol and specific imidazole compounds. The composition is useful, for example, in inks, insulating paints and adhesives for printed circuit base boards and in copper-clad laminated boards.
    Type: Grant
    Filed: June 21, 1985
    Date of Patent: June 3, 1986
    Assignees: Shikoku Chemicals Corp., Shikoku Finechemicals Corp.
    Inventors: Kazuo Kamagata, Toshiaki Yamada, Shunichi Kawata, Takashi Mizui
  • Patent number: 4588617
    Abstract: Spherical particles of cured epoxy resin having an average size not larger than 50 .mu.m can be produced by adding a water-soluble amine curing agent to an emulsion of uncured epoxy resin.It is possible to prepare spherical particles incorporating a UV absorber or inorganic particles, to dye these particles with an acid dye, and to subject them to electroless plating.In addition, after-treatment of the cured particles enhances their heat resistance and destroys the epoxide groups left unreacted inside each particle.These particles may be used as an ingredient of cosmetic and coating compositions, as a toner of electrostatic copiers, and for other applications.
    Type: Grant
    Filed: September 17, 1984
    Date of Patent: May 13, 1986
    Assignee: Toray Industries, Inc.
    Inventor: Koichiro Oka
  • Patent number: 4578424
    Abstract: A two component adhesive formulation comprising a mixture of A. an epoxy component comprising an epoxy resin and an additive selected from the group consisting of (a) a polyisocyanate, (b) a carboxylic anhydride and (c) a compound having unsaturated carbon-carbon bonds capable of undergoing Michael addition reaction with amines, and B. a hardener component for curing component A comprising a mixture of amido amines, primary and secondary amines having tertiary amine groups or ether groups in their backbone, and bisphenol-A is described.
    Type: Grant
    Filed: May 3, 1985
    Date of Patent: March 25, 1986
    Assignee: Ashland Oil, Inc.
    Inventor: Anil B. Goel
  • Patent number: 4559399
    Abstract: A curable composition is prepared by reacting (1) an alkenylphenyl cyanate or mixture thereof, (2) an aromatic polycyanate, polycyanamide or mixture thereof and (3) a polymerizable ethylenically unsaturated material or mixture of such materials. Said curable compositions provide polymeric (cured) compositions with improved mechanical strength relative to cured aromatic polycyanates and/or polycyanamides.
    Type: Grant
    Filed: March 11, 1985
    Date of Patent: December 17, 1985
    Assignee: The Dow Chemical Company
    Inventor: Robert E. Hefner, Jr.
  • Patent number: 4555532
    Abstract: An epoxy resin composition containing as a latent hardener a diaminotriazine-modified imidazole compound and dicyandiamide is improved in the usable life of an solder resist ink composition and can give a solder resist also excellent in resistance to an electroless plating bath.
    Type: Grant
    Filed: October 10, 1984
    Date of Patent: November 26, 1985
    Assignee: Hitachi, Ltd.
    Inventors: Isamu Tanaka, Hiroshi Kikuchi, Akira Tomizawa, Hitoshi Oka
  • Patent number: 4537946
    Abstract: A novel process for the preparation of isomelamines of the formula I, ##STR1## which is characterized in that an N-cyano-N-(ar or cyclo)alkylcarboxylic acid amide or N-cyano-N-allylcarboxylic acid amide of the formula II or III ##STR2## is reacted with aqueous sodium hydroxide solution, potassium hydroxide solution or ammonia solution or a primary aliphatic or cycloaliphatic amine in a solvent or with a primary aliphatic alcohol in the presence of a catalytic amount of a basic compound in a temperature range from -20.degree. C. to 200.degree. C., at least 3 hydroxyl or amino group equivalents being used per 3 carboxylic acid amide group equivalents.The isomelamines prepared by the process according to the invention are valuable curing agents for epoxide resins.
    Type: Grant
    Filed: November 28, 1984
    Date of Patent: August 27, 1985
    Assignee: Ciba-Geigy Corporation
    Inventors: Friedrich Lohse, Helmut Zondler
  • Patent number: 4482692
    Abstract: Epoxy resin compositions are disclosed which are the reaction products resulting from reacting (A) the reaction product of a cyanuric halide and at least one dihydric or polyhydric phenol with (B) at least one dihydric or polyhydric phenol and (C) at least one epoxy resin having an average of more than one epoxy group per molecule. These epoxy resin compositions are suitable for use as electrical laminates, structural laminates, coatings, castings, electrical encapsulation and the like.
    Type: Grant
    Filed: October 24, 1983
    Date of Patent: November 13, 1984
    Assignee: The Dow Chemical Company
    Inventors: James L. Bertram, William Davis, Louis L. Walker
  • Patent number: 4480084
    Abstract: This invention is directed to polymeric compounds which contain the polyalkylpiperidine radical and at least two primary hydroxyl groups. These compounds are useful as light stabilizers for plastics and coatings. More particularly, the polymeric stabilizers is formed by chain extending polyalkylpiperidine with an excess of epoxy resin to form a diepoxide functional polymer which is then capped with hydroxy functional monomer.
    Type: Grant
    Filed: October 13, 1983
    Date of Patent: October 30, 1984
    Assignee: Ford Motor Company
    Inventors: Panagiotis I. Kordomenos, Delores J. Alexander, David M. Thomson
  • Patent number: 4477646
    Abstract: Novel piperazinoethyl ureas are prepared by reacting an aminoethyl piperazine with urea and recovering the monosubstituted urea product. These products are useful as curing agents for epoxy resins.
    Type: Grant
    Filed: August 24, 1983
    Date of Patent: October 16, 1984
    Assignee: The Dow Chemical Company
    Inventor: Jimmy Myers
  • Patent number: 4447594
    Abstract: Heat-curable compositions comprising an ester of an ethylenically unsaturated acid and a polyhydric alcohol, an oxopropyl isocyanurate formed by the addition of from 2 to 3 moles of acrolein to 1 mole of isocyanuric acid and a free radical or ionic initiator. The compositions are useful as coatings, adhesives and the like.
    Type: Grant
    Filed: December 21, 1981
    Date of Patent: May 8, 1984
    Assignee: Monsanto Company
    Inventors: Saul M. Cohen, John R. LeBlanc
  • Patent number: 4439554
    Abstract: Tertiary aromatic amines derived from aminoglutethimide or para-aminophenylacetic acid act as accelerators for the peroxide catalyzed polymerization of acrylic resins, especially methacrylates, acrylates and unsaturated polyesters. The amines are characterized by good hardening, strength, color and toxicity characteristics, and are thereby particularly suited for use in the filling and restoration of human teeth and the cementing of bone.
    Type: Grant
    Filed: June 11, 1982
    Date of Patent: March 27, 1984
    Assignee: American Dental Association Health Foundation
    Inventor: Harold Argentar
  • Patent number: 4427802
    Abstract: A curable composition, and composites comprising (A) an epoxy resin and (B) a heterocyclic compound prepared by reacting at least one aromatic or aliphatic polyamine compound having at least two amine groups, which are separated by no more than one carbon atom, with at least one carbonyl-containing compound selected from the group consisting of aldehydes and ketones.
    Type: Grant
    Filed: July 27, 1981
    Date of Patent: January 24, 1984
    Assignee: Hexcel Corporation
    Inventors: Richard J. Moulton, John D. Neuner
  • Patent number: 4400490
    Abstract: Nylon compositions are prepared by anionic polymerization of at least 75% of a lactam with up to about 25% of an epoxy component in the presence of a basic catalyst and a promoter that can be used in lactam polymerization wherein, in a preferred embodiment, the epoxy component is a modified epoxy resin containing physical property enhancing constituents. The nylon compositions are prepared by mixing a fraction of a lactam with the epoxy component and the promotor to form liquid mixture A, mixing remaining lactam with the catalyst to form liquid mixture B, mixing liquid mixtures A and B in the ratio ranging from 1/1 to 4/1 to form liquid mixture C, injecting liquid mixture C into a mold maintained at a temperature of about 100.degree. to 200.degree. C. wherein a chemical reaction takes place whereby the liquid is converted to a solidified mass in less than about 2 minutes, and removing the nylon composition in the form of a molded object.
    Type: Grant
    Filed: January 18, 1982
    Date of Patent: August 23, 1983
    Assignee: The B.F. Goodrich Company
    Inventor: Wei-Yeih W. Yang
  • Patent number: 4393181
    Abstract: The present invention is directed to epoxy curing agents prepared by reacting a polyhydric phenol with a hexa-alkyl ether of hexamethylol melamine in an amount to provide at least two phenolic hydroxyl groups to one methoxy group. The invention is further directed to curable epoxy compositions.
    Type: Grant
    Filed: June 30, 1982
    Date of Patent: July 12, 1983
    Assignee: Shell Oil Company
    Inventor: Roy A. Allen
  • Patent number: 4384084
    Abstract: Hardenable mixtures which contain a polyepoxide compound with, on average, more than one epoxide group in the molecule, and a hardener of the formula I ##STR1## The symbol n is an integer from 3 to 5. The methylene carbon atoms can be substituted by one or two methyl or ethyl groups.The hardenable mixtures can be used, for example, in the fields of the protection of surfaces or of adhesives technology.
    Type: Grant
    Filed: February 10, 1982
    Date of Patent: May 17, 1983
    Assignee: Ciba-Geigy Corporation
    Inventors: Friedrich Lohse, Dieter Trachsler, Roland Moser
  • Patent number: 4376844
    Abstract: Resin-forming polyepoxides are mixed with polyoxazolidinyl compounds or polymers containing pendant oxazolidinyl groups in which the carbon atom in the 2-position of the heterocyclic ring is substituted with saturated hydrocarbon groups, such as dialkyl, or with an alkylene group forming a saturated ring with the carbon atom in the 2-position of the oxazolidinyl ring to form, in the absence of water, a stable composition which can be stored in closed containers for months without undergoing gelation. When such compositions are spread into films and the films exposed to moisture at ambient temperature, e.g., to ambient air having a relative humidity of at least 20% and temperature of about 15.degree. to 25.degree. C., the polymer serves to react with and cure the polyepoxide.
    Type: Grant
    Filed: January 20, 1982
    Date of Patent: March 15, 1983
    Assignee: Rohm and Haas Company
    Inventors: William D. Emmons, Wayne E. Feely
  • Patent number: 4368317
    Abstract: A mixture for the preparation of novel cross-linked nitrogen-containing polyadducts, which contains(a) a N-cyanolactam of the formula I or II ##STR1## and (b) a monomeric or oligomeric organic compound having not less than 2 C atoms and not less than 2 hydroxyl groups.The mixture, with or without addition of a monohydroxy compound, can be used as a casting resin or adhesive, or for the production of foams or coatings.The symbols in the formula are all as defined in claim 1.
    Type: Grant
    Filed: May 11, 1981
    Date of Patent: January 11, 1983
    Assignee: Ciba-Geigy Corporation
    Inventors: Friedrich Lohse, Dieter Trachsler
  • Patent number: 4367299
    Abstract: The process according to the invention is performed by reaction of epoxide resins with primary and/or secondary polyamines with simultaneous quaternizing by means of aromatic and aliphatic polysulfonic esters, halogen-free organic phosphoric esters, or organic compounds which contain at least 1 chlorine or bromine atom, and which are free from -COOH groups and corresponding salt groups. The crosslinked plastics thus obtained are distinguished by an improved electrical conductivity.
    Type: Grant
    Filed: December 8, 1980
    Date of Patent: January 4, 1983
    Assignee: Ciba-Geigy Corporation
    Inventors: Alfred Renner, Theobald Haug
  • Patent number: 4308356
    Abstract: Resin-forming polyepoxides are mixed with polyoxazolidinyl compounds or polymers containing pendant oxazolidinyl groups in which the carbon atom in the 2-position of the heterocyclic ring is substituted with saturated hydrocarbon groups, such as dialkyl, or with an alkylene group forming a saturated ring with the carbon atom in the 2-position of the oxazolidinyl ring to form, in the absence of water, a stable composition which can be stored in closed containers for months without undergoing gelation. When such compositions are spread into films and the films exposed to moisture at ambient temperature, e.g., to ambient air having a relative humidity of at least 20% and temperature of about 15.degree. to 25.degree. C., the polymer serves to react with and cure the polyepoxide.
    Type: Grant
    Filed: January 30, 1980
    Date of Patent: December 29, 1981
    Assignee: Rohm and Haas Company
    Inventors: William D. Emmons, Wayne E. Feely
  • Patent number: 4304801
    Abstract: A process for preparing a flame-retardant antistatic polymer additive useful for incorporation into the melt prior to extruding fibers or other polymers or for dispersing on fibers. Improved flame-retardant properties are obtained by including with said flame-retardant additive an effective flame-retardant proportion of a compound from group Vb of the periodic table.
    Type: Grant
    Filed: November 13, 1979
    Date of Patent: December 8, 1981
    Assignee: BASF Wyandotte Corporation
    Inventors: David D. Newkirk, Robert B. Login, Basil Thir
  • Patent number: 4299926
    Abstract: Condensation polymers or addition polymers which contain sterically hindered polyalkylpiperidine groups are proposed as light stabilizers for plastics. The polymers concerned are relatively low-molecular polymers and a difunctional derivatives of a polyalkylpiperidine is additionally used for the manufacture of these. The piperidine radical can be present in the main chain or as a side group of the polymeric stabilizer. Polymeric stabilizers of this type do not tend to migrate out of the plastic or to be removed by extraction; they are therefore very permanent in use.
    Type: Grant
    Filed: August 5, 1980
    Date of Patent: November 10, 1981
    Assignee: Ciba-Geigy Corporation
    Inventors: Jean Rody, Michael Rasberger
  • Patent number: 4298656
    Abstract: A sprayable, solventless bracing composition is made from the admixture of 100 parts of bisphenol A epoxy resin, up to about 8 parts of a coloring pigment, about 0.5 to about 4 parts of a thixotropic agent, about 100 to about 200 parts of butadiene/acrylonitrile polymer, and about 20 to about 40 parts of an amine terminated curing agent.
    Type: Grant
    Filed: March 28, 1980
    Date of Patent: November 3, 1981
    Assignee: Westinghouse Electric Corp.
    Inventor: Morris A. Mendelsohn
  • Patent number: 4291146
    Abstract: Heat-curable mixtures of one or more epoxide compounds, which, on average, have more than one epoxide group in the molecule, and one or more .beta.-aminocrotonic acid derivatives, such as .beta.-aminocrotononitrile, .beta.-aminocrotonamide or .beta.-aminocrotonic acid esters, and also, if desired, a polyamine or polycarboxylic acid anhydride or a maleimide. The novel curable mixtures are distinguished by outstanding stability on storage, can be processed easily and give moulded materials with good mechanical properties.
    Type: Grant
    Filed: October 29, 1979
    Date of Patent: September 22, 1981
    Assignee: Ciba-Geigy Corporation
    Inventor: Theobald Haug
  • Patent number: 4289869
    Abstract: Mixtures hardenable under the influence of air moisture are provided. They comprise at least one organic polyisocyanate or an polyepoxide and as a moisture activated hardener an N,N'-substituted imidazolidine derivative or an N,N'-substituted hexahydropyrimidine derivative, which show at no nitrogen atom a --CO--NH-- grouping and which are present in sufficient amount to provide for cross-linking. The mixtures for example provide lacquers and adhesives having various touch dry times.
    Type: Grant
    Filed: May 22, 1980
    Date of Patent: September 15, 1981
    Assignee: Akzo NV
    Inventors: Hans-Georg Zengel, Michael Wallrabenstein, Walter Brodowski
  • Patent number: 4265803
    Abstract: The invention entitled "Polymers containing polyalkylpiperidines and use thereof as stabilizers" provides a class of polymers in which groups containing sterically hindered polyalkylpiperidines are linked in the main chain of the polymers via bridging members containing 2-hydroxy-1,3-trimethylene groups.The polymers show superior stabilizing effects for various synthetic polymers such as polyolefins against degradation thereof induced by light and/or heat. The polymers have advantages, as compared with known stabilizer compounds, that they hardly volatile upon processing with heating or during storage of articles containing thereof, and that they are resistant to extraction with solvents from articles containing thereof.
    Type: Grant
    Filed: August 7, 1978
    Date of Patent: May 5, 1981
    Assignee: Sankyo Company Limited
    Inventors: Nobuo Soma, Syoji Morimura, Takao Yoshioka, Tomoyuki Kurumada
  • Patent number: 4263162
    Abstract: Hardeners for polyepoxides containing more than one, 1,2-epoxide group per molecule comprising a cyanoethylated polyamide amine containing free secondary or primary or secondary and primary amino groups, said cyanoethylated poly-amide amine is a reaction product of polyadded units of(A) 1 mole of a polyamine corresponding to the formula: ##STR1## in which p=0, n=2 or 3, m=0 to 6 and X=NH.sub.2, or p=1, n=2 or 3, m=0 and X=H,(B) from 0.5 to 2.3 moles of a saturated lactam, and(C) from 0.4 to 2.8 moles of acrylonitrile, methacrylonitrile or mixtures thereof.The hardener may be additionally modified with from 0.01 to 1.8 moles of a 1,2-alkylene oxide containing from 2 to 4 carbon atoms or with from 0.001 to 0.3 moles of a carboxylic acid or with the 1,2-alkylene oxide and the carboxylic acid in the quantities indicated, based in each case on 1 mole of the polyamine.
    Type: Grant
    Filed: December 10, 1979
    Date of Patent: April 21, 1981
    Assignee: Bayer Aktiengesellschaft
    Inventors: Hans-Josef Buysch, Hermann Gruber, Wolfgang Wellner, Karl Leiritz
  • Patent number: RE32628
    Abstract: A solvent-free curable composition has a long shelf life and consists ofA 100 parts by weight of an epoxy resin andB from 10 to 100 parts by weight of .[.,.]. .Iadd.4,4-bis-(para-aminobenzoyl)-piperazine .Iaddend.as a curing agent for the epoxy resin, .[.an aromatic diamine containing ##STR1## groups,.]. with or without C from 0.01 to 5 parts by weight of an accelerator, the curing agent for the epoxy resin being finely dispersed in the latter and preferably having a particle size of less than 10 .mu.m. .[.The preferred epoxy resin curing agent is 4,4'-diaminodiphenyl ketone..]. The curable composition is used in particular for the preparation of fiber-reinforced materials.
    Type: Grant
    Filed: November 24, 1986
    Date of Patent: March 22, 1988
    Assignee: BASF Aktiengesellschaft
    Inventors: Helmut Tesch, Manfred Heym, Walter Doerflinger, Herbert Stutz, Peter Neumann, Dietmar Nissen, Gerhard Schaefer