Mixed With A Reactant Containing A Single 1,2-epoxy Group Per Mole Or Polymer Derived Therefrom Patents (Class 525/430)
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Patent number: 5989697Abstract: Claimed is a copolyether amide having a melting point in the range of 180.degree. to 260.degree. C., incorporating at least 10 wt. % and not more than 30 wt. % of ethylene oxide groups, and composed of 30 to 60 wt. % of polyamide segments and 70 to 40 wt. % of segments derived from a (cyclo)aliphatic or aromatic dicarboxylic acid or a dimeric fatty acid and a polyoxyalkylene diamine derived from a polyoxyalkylene group having a molecular weight of 600 to 6000 and an atomic ratio of carbon to oxygen of 2.0 to 4.3. Also claimed is a non-porous, waterproof film having a water vapor permeability of at least 1000 g/m.sup.2 day determined at 30.degree. C. and 50% RH in accordance with ASTM E96-66 which is based on a the use of these films in rainwear, shoes, tents, chairs, as mattress covers and underslating, for medical purpose garments, and for the manufacture of dressings.Type: GrantFiled: November 24, 1997Date of Patent: November 23, 1999Assignee: Akzo Nobel, NVInventor: Bert Gebben
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Patent number: 5986016Abstract: A thermoplastic resin composition containing a polyetherimide resin; a siloxane-polyetherimide copolymer; one or more resins selected from the group consisting of polycarbonate resins and copolyester-carbonate resins; and one or more component selected from glycidyl ester impact modifiers and siloxane-polycarbonate copolymers exhibits improved ductility and low temperature impact properties.Type: GrantFiled: December 23, 1997Date of Patent: November 16, 1999Assignee: General Electric Co.Inventors: Robert Puyenbroek, James Fishburn
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Patent number: 5969055Abstract: A liquid crystal alignment agent containing at least two kinds of polymers selected from the group consisting of polyamic acids and imidized polymers and having a structure obtained by dehydration and ring closure of polyamic acid. In the at least two kinds of polymers contained in the liquid crystal alignment agent, the polymer of higher imidization degree has a smaller surface free energy. The liquid crystal alignment agent gives a liquid crystal display device having less stuck image and high pretilt angle.Type: GrantFiled: January 15, 1998Date of Patent: October 19, 1999Assignee: JSR CorporationInventors: Michinori Nishikawa, Kyouyu Yasuda, Shigeo Kawamura, Tsukasa Toyoshima, Yasuo Matsuki, Kengo Wakabayashi
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Patent number: 5959042Abstract: A material is provided comprising: (a) a polyamide; (b) a polymer having PA blocks and polyether PEG blocks; (c) optionally a polyolefin; (d) a functionalized polyolefin; the various constituents being present in amounts by weight, a, b, c and d such that: a>0; b>0; c+d>0; a+b+c+d=100; with a/b>0.2; (a+b)/(c+d)>1; and b/(a+b+c+d)<0.5. A film which is non-porous but breathable, i.e. porous to water vapor but not to water, and an antistatic object obtained from this material are also provided.Type: GrantFiled: November 14, 1997Date of Patent: September 28, 1999Assignee: Elf Atochem S.A.Inventors: Alain Bouilloux, Patrick Alex
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Patent number: 5942592Abstract: A solvent-soluble siloxane polyimide comprising a copolymer obtained by reaction of a diamine compound mixture comprising a diaminopolysiloxane, an alicyclic diamine and an aromatic diamine with an aromatic tetracarboxylic acid anhydride, followed by polyimidization reaction of the resulting polyamic acid forms a heat-resistant adhesive by adding an epoxy resin, a diamine-based curing agent and an organic solvent thereto, The formed adhesives provides a distinguished curling resistance without any warp when the resulting siloxane polyimide soluble in ordinary organic solvents is used as a main component of the adhesive for bonding between a base material and a copper foil of a flexible printed substrate.Type: GrantFiled: February 3, 1998Date of Patent: August 24, 1999Assignee: Nippon Mektron, LimitedInventors: Dong Zhao, Hiroshi Sakuyama, Tomoko Katono, Lin-chiu Chiang, Jeng-Tain Lin
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Patent number: 5936046Abstract: There is provided a curing agent composition for epoxy resins and two component curable epoxy resin compositions. The curing agent is made by reacting at least a b) substituted aryl amidopolyamine with a c) monoglycidyl capping agent, where the substituted aryl amidopolyamine is made by reacting at least:bi) a phenolic compound substituted with at least one carboxyl group and at least one hydrocarbyl group having at least 1 carbon atom, andbii) an aliphatic polyamine compound having at least two primary amine groups.The curing agent is storage stable for at least 6 months. There is also provided a two component epoxy resin composition, which advantageously can be made in the absence of external catalysts/accelerators, and can cure within 24 hours at the low temperature of 4.4.degree. C. The two component epoxy resin composition also exhibits excellent compatibility between the curing agent and the epoxy resin, thus reducing or eliminating the need for an induction time.Type: GrantFiled: December 31, 1997Date of Patent: August 10, 1999Assignee: Shell Oil CompanyInventor: Kalyan Ghosh
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Patent number: 5912306Abstract: This invention generally provides a class of novel cationic resin comprised of a cross-linked polyamine having pendant tertiary and/or quaternary amine groups linked to amine groups in said polyamine by a hydrocarbon chain including a hydroxyl group in the .beta.-position with respect to the polyamine chain. In general, these resins can comprise the reaction product of a polyamine having secondary amine groups, a crosslinking agent, and a cationizing agent having an epoxide group and a tertiary or quaternary amine (quaternary ammonium) group. These cationic resins have been found to be useful for a variety of operations in the manufacture of paper and paperboard, especially as drainage aids and stabilizers for dispersed rosin sizing agents.Type: GrantFiled: November 22, 1996Date of Patent: June 15, 1999Assignee: Hercules IncorporatedInventors: Ian A. Pudney, Brian M. Stubbs, Malcolm J. Welch
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Patent number: 5902862Abstract: An intralinked polyamidoamine which is nonthermosetting and endcapped. This intralinked polyamidoamine is the reaction product of a dicarboxylic acid or dicarboxylic acid derivative, a polyamine, an endcapping agent, and an intralinker.Type: GrantFiled: February 3, 1998Date of Patent: May 11, 1999Assignee: Hercules IncorporatedInventor: Anthony J. Allen
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Patent number: 5885723Abstract: Provided is bonding film for printed circuit boards which is resistant to cracking even when bent with a small radius of curvature, has a sufficient mechanical strength even in its semi-cured state so that the handling may be facilitated, is not undesirably brittle and therefore does not produce undesired debris when cut, and is flexible and flame retardant at the same time. The bonding film may consist of (i) high polymer epoxy resin; (ii) denatured polyamide obtained by reacting epoxy resin and polyamide; (iii) polyfunctional epoxy resin; and (iv) curing agent. Preferably, the denatured polyamide includes a polyalkylene-glycol residue or a polycarbonate-diol residue. Preferably, the high polymer epoxy resin is produced by the polymerization of bifunctional epoxy resin and bifunctional phenol resin, and has a weight averaged molecular weight equal to 50,000 or higher.Type: GrantFiled: December 19, 1997Date of Patent: March 23, 1999Assignee: Hitachi Chemical Company, Ltd.Inventors: Atsushi Takahashi, Shinji Ogi, Koji Morita, Kazunori Yamamoto, Ken Nanaumi, Kiyoshi Hirosawa, Akinari Kida, Takao Hirayama, Toshihiko Ito, Hiroaki Hirakura
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Patent number: 5837799Abstract: A fire-retardant compound including bromine indicated by general formula (1), wherein the end group X and Y are comprised by A or B shown in formula (2), and the said fire-retardant compound is a mixture of the composition including 15 to 30% of X=Y=A, the composition including 40 to 60% of X=A and Y=B and the composition including 20 to 35% of X=Y=B, and degree of polymerization n is indicated by an integral number from 0 to 30, and a flame-retarded thermoplastic resin including said fire-retardant compound.Type: GrantFiled: August 23, 1996Date of Patent: November 17, 1998Assignee: Tohto Kasei Co., Inc.Inventors: Toshihiko Chen, Yoshiaki Nakamura, Tetsunori Sato, Yoshiyuki Morikawa
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Patent number: 5786429Abstract: An intralinked polyamidoamine which is nonthermosetting and endcapped. This intralinked polyamidoamine is the reaction product of a dicarboxylic acid or dicarboxylic acid derivative, a polyamine, an endcapping agent, and an intralinker.Type: GrantFiled: April 18, 1996Date of Patent: July 28, 1998Assignee: Hercules IncorporatedInventor: Anthony J. Allen
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Patent number: 5773507Abstract: An antistatic composition containing a crosslinked thermosetting resin formed by reacting, in the presence of a water-soluble solvent, (a) a polyaminoamide having unreacted primary and secondary amine groups and (b) a polychlorohydrin derivative.Type: GrantFiled: August 25, 1995Date of Patent: June 30, 1998Assignee: Henkel CorporationInventors: Michael J. Incorvia, Stephen A. Fischer
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Patent number: 5696212Abstract: In a method for curing a resin by utilizing an intramolecular crosslinking reaction, the improvement wherein the crosslinking reaction is a ring opening addition reaction between a lactone structure and an active hydrogen-containing functional group.Type: GrantFiled: May 24, 1996Date of Patent: December 9, 1997Assignee: Kansai Paint Co., Ltd.Inventor: Osamu Isozaki
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Patent number: 5656699Abstract: A water-soluble drainage-aid composition which is the reaction product of a bifunctional crosslinking agent which may be an epihalohydrin selected from the group consisting of epichlorohydrin or epibromohydrin, a 1,3-dihalo-2-propanol in which "halo" is chloro- or bromo-, or a glycidyl ester of an alkanesulfonic or arenesulfonic acid, and an oligoamide reaction product of a polyalkylene polyamine with a carboxylic acid selected from the group consisting of dicarboxylic acids containing between 5 and 10 carbons and their acyl halides, amides, and esters of alcohols having up to 6 carbon atoms, and tricarboxylic acids containing between 6 and 10 carbon atoms and their acyl halides, amides, and esters of alcohols having up to 6 carbon atoms, with a mole ratio of polyamine to dicarboxylic acid or its functional derivative between 1.Type: GrantFiled: April 18, 1994Date of Patent: August 12, 1997Assignee: Hercules IncorporatedInventors: Sunil Priya Dasgupta, Herbert Hastings Espy
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Patent number: 5618528Abstract: A linear block copolymer comprising units of an alkylene oxide, linked to units of peptide via a linking group comprising a --CH.sub.2 CHOHCH.sub.2 N(R)-- moiety, is useful as an imaging agent, drug, prodrug or as a delivery system for imaging agents, drugs or prodrugs.Type: GrantFiled: February 28, 1994Date of Patent: April 8, 1997Assignee: Sterling Winthrop Inc.Inventors: Eugene R. Cooper, Stephen P. Jones, Colin W. Pouton, Michael D. Threadgill
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Patent number: 5614597Abstract: Wet strength resins for paper are prepared by a process comprising the following steps in sequence: (1) reacting a polyamidoamine with an epihalohydrin until the amount of unreacted epihalohydrin present is less than about 10% by weight of the amount of epihalohydrin charged, (2) adding a water-soluble, nonpolymeric amine in an amount of about 0.1 to about 50 mole %, based on the amine in the polyamidoamine, and (3) heating to effect crosslinking. An optional amine additive reaction step can be included after step (2). A nonhalogen acid such as sulfuric acid can be added toward the end of the crosslinking step to decrease the total organic halogen content and increase the wet strengthening effectiveness.Type: GrantFiled: December 14, 1994Date of Patent: March 25, 1997Assignee: Hercules IncorporatedInventor: Barton K. Bower
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Patent number: 5605944Abstract: Polyamide/epoxy, thermoplastic-thermoset curable adhesive resin systems which are aqueous dispersions are disclosed; wherein the epoxy resin component has unreacted epoxy groups numbering, on average, between about 2 and about 8; the polyamide component comprises both an acid terminated polyamide resin having an acid number, on average, of from about 10 to about 30, in an amount of from about 20% to about 60% by weight of the total weight of polyamide resin, and an amine terminated polyamide resin having an amine number, on average, of from about 5 to about 30, in an amount of from about 80% to about 40% by weight of the total weight of polyamide resin; and additionally a neutralizing base in amount sufficient to neutralize from about 50% to about 80%, on an equivalents basis, of the total number of free acid groups occurring on the acid and amine terminated polyamide resin components; and optionally at least one water soluble, dipolar chemical moiety in an amount effective to provide stability in the overallType: GrantFiled: April 27, 1995Date of Patent: February 25, 1997Assignee: Union Camp CorporationInventor: Gerald W. Heebner
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Patent number: 5602211Abstract: Adducts containing mesogenic or rodlike moieties are prepared by reacting (1) at least one compound containing an average of more than one vicinal epoxide group per molecule with (2) at least one compound containing an average of more than one reactive hydrogen atom per molecule; with the proviso that at least one member of components (1) and (2) contains a mesogenic or rodlike moiety. These compounds are useful as curing agents for epoxy resins.Type: GrantFiled: January 18, 1995Date of Patent: February 11, 1997Assignee: The Dow Chemical CompanyInventors: Robert E. Hefner, Jr., Jimmy D. Earls
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Patent number: 5576398Abstract: A thermosetting resin composition which comprises (A) a resin in which at least one compound having a graft-reactive group such as a carboxyl group, a primary amino group or a secondary amino group and a carboxylic anhydride group has been grafted on a polycarbodiimide and (B) an epoxy compound. The said thermosetting resin composition retains heat resistance, electrically insulating properties and mechanical properties characteristic of polycarbodiimide, is excellent in solubility in various solvents and storage stability in the form of a solution and can be easily cured under mild conditions, and can produce a cured product excellent in humidity resistance, transparency, chemical stability and adhesiveness to various substrates.Type: GrantFiled: November 21, 1995Date of Patent: November 19, 1996Assignee: Japan Synthetic Rubber Co., Ltd.Inventors: Masayuki Takahashi, Hiromi Komatsu, Kazuo Kawaguchi, Shuetsu Fujiwara
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Patent number: 5543489Abstract: The invention relates to a composition based on a thermoplastic elastomer comprising polyether sequences in which the amount of matter extractable by ethanol is less than a value sufficient to prevent exudation. Thermoplastic elastomer block copolymer compositions according to the invention comprise polyether blocks and blocks selected from the group consisting of polyamide blocks and polyester blocks, said copolymer compositions incorporating a quantity of terpolymer, selected from the group consisting of ethylene/unsaturated acid ester/unsaturated dicarboxylic acid anhydride terpolymer and ethylene/unsaturated acid ester/unsaturated glycidyl monomer terpolymer, sufficient to prevent exudation of polyamide, polyester, or polyether oligomers or impurities.Type: GrantFiled: April 19, 1994Date of Patent: August 6, 1996Inventors: Patrick Alex, Yves Aubert, Alain Frey
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Patent number: 5506024Abstract: Water vapor permeable films of polymeric material of thermoplastic elastomer type based on polyetheresteramide, and preferably on polyether block amides and articles comprising a film of this kind and capable, in particular, of coming into contact with the human body.Type: GrantFiled: June 7, 1995Date of Patent: April 9, 1996Assignee: AtochemInventor: Joseph R. Flesher
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Patent number: 5502102Abstract: A thermoplastic resin composition is provided which contains polyetherimide resin, poly(arylene sulfide) resin, an epoxy compound and, optionally, glass fibers. The composition exhibits enhanced physical properties, specifically enhanced ductility and flash resistance. The composition is useful for making molded articles exhibiting desired physical properties.Type: GrantFiled: August 9, 1994Date of Patent: March 26, 1996Assignee: General Electric CompanyInventor: Darryl Nazareth
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Patent number: 5494977Abstract: Compositions(I), (II) and (III) comprising compounds having vinyl groups as side chains and epoxidized compositions(XI), (XII) and (XIII) thereof, which can be prepared by the various reaction combinations of (a) with (b) or (b)+(c), and or (d), where(a) is at least one compound having at least one vinyl group and one epoxy group in the molecule; (b) is at least one of a polybasic compound, an anhydride thereof, a polymer having carboxylic groups at terminals and a polymer having carboxylic groups as side chains; (c) is at least one organic compound having at least one active hydrogen atom; and (d) is at least one of an unsaturated monocarboxylic compound or an unsaturated monocarboxylic ester having a hydroxyl group.Type: GrantFiled: November 21, 1994Date of Patent: February 27, 1996Assignee: Daicel Chemical Industries, Ltd.Inventors: Yoshiyuki Harano, Sozo Namai, Katsuyki Maeda, Takaaki Murai
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Patent number: 5486357Abstract: Internal polymeric surfaces of medical devices are provided that have enhanced biocompatibility properties. The internal polymeric surface presents an anti-thrombogenic, fibrinolytic or thrombolytic interface with body fluids such as blood flowing through medical device tubing during implantation for medical procedures. The biocompatibility enhancing agent is secured to the polymeric substrate by a spacer molecule which is covalently bound to the internal polymeric surface which had been subjected to radiofrequency plasma treatment with a low pressure plasma medium of water vapor, oxygen or combination of water vapor and oxygen gas.Type: GrantFiled: October 27, 1993Date of Patent: January 23, 1996Assignee: Cordis CorporationInventor: Pallassana V. Narayanan
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Patent number: 5434222Abstract: The new process for the preparation of polycondensates from polyamidoamines, epichlorohydrin and if appropriate polyamines, unreacted epichlorohydrin being removed by passing an inert gas through the reaction mixture, produces salt-free reaction products which have very low organic chlorine contents and at the same time very low values for dichloropropanol, chloropropanediol and epichlorohydrin, and are excellently suitable as auxiliaries for paper and textiles.Type: GrantFiled: October 26, 1992Date of Patent: July 18, 1995Assignee: Bayer AktiengesellschaftInventors: Jurgens Reiners, Karl Leiritz, Fritz Puchner
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Patent number: 5422398Abstract: A compatibilizer for polymer blends is presented. The compatibilizer comprises a sulfonated polystyrene and may be used to prepare miscible blends of the sulfonated polystyrene with two or more polymers having polar groups, e.g., polyamides, polyethers, polyesters, polysulfones and polyamines. The sulfonated polystyrene compatibilizer may be used in conjunction with a counterion.Type: GrantFiled: August 17, 1994Date of Patent: June 6, 1995Assignee: The University of ConnecticutInventor: Robert A. Weiss
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Patent number: 5418295Abstract: A process for treating polymeric contact lenses comprising the steps of: (a) where necessary, activating the polymeric surface to be treated and (b) treating the surface with a compound of formula (I), wherein X is a group which reacts with the polymer surface; Y is straight or branched C.sub.1-6 alkylene; the groups R are the same or different and each is straight or branched C.sub.1-4 alkyl, and A.sup.- is a counterion.X--Y--CH.sub.2 N.sup..sym. R.sub.3 A.sup..crclbar.Type: GrantFiled: April 13, 1992Date of Patent: May 23, 1995Assignee: Biocompatibles LimitedInventors: Roderick W. J. Bowers, Stephen A. Jones, Peter W. Straford, Michael J. Driver
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Patent number: 5389705Abstract: Novel polymers which are suitable as binders are obtainable by reacting(A) a base resin which has an average molecular weight M.sub.w of from 200 to 5,000 and contains on average from 1 to 3 epoxy or isocyanato groups as the reactive groups per moleculewith(B) a mixture of(B1) 5 to 50% by weight of polyisobutylene which is terminated with primary amino groups and has an average molecular weight M.sub.w of from 500 to 5,000 and(B2) 5-95% by weight of an amidoamine which carries primary amino groups and is obtainable by condensation of diprimary diamines of 2 to 20 carbon atoms with aliphatic C.sub.2 -C.sub.44 -dicarboxylic acids,the amounts being such that from 1 to 5 equivalents of primary amino groups of (B) are present per equivalent of reactive groups of (A).Type: GrantFiled: August 6, 1993Date of Patent: February 14, 1995Assignee: BASF Lacke + Farben AktiengesellschaftInventors: Klaus Huemke, Helmut Fobbe, Konrad Knoll
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Patent number: 5373087Abstract: A process for preparing a polyaminopolymer which contains functionality comprises the steps of (a) contacting a polyfunctional amine with an unsaturated alkylating agent under reaction conditions to form an amine/unsaturated alkylating agent adduct; (b) contacting the adduct with a polyfunctional compound such that a polyaminopolymer is formed: (e) contacting the polyaminopolymer with a halogen, hypohalous acid or precursor thereof such that a polyaminopolymer having halohydrin or dihalo functionality is formed, and (d) raising the pH of the polyaminopolymer having halohydrin or vicinal dihalo functionality sufficiently to cause an increase in molecular weight. Alternatively, the invention is a process having steps (a), (b), (c) and optionally (d), but with a step (h) between steps (b) and (c) of contacting the polyaminopolymer with a crosslinking agent therefor having at least two functional groups reactive with amine groups such that a crosslinked polyaminopolymer is formed.Type: GrantFiled: November 8, 1993Date of Patent: December 13, 1994Assignee: The Dow Chemical CompanyInventors: Otha G. Weaver, Jr., Wanda G. Buckner, Terry W. Glass
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Patent number: 5371175Abstract: An epoxy-terminated polyamide having the following structure: ##STR1## where each of R.sub.1, R.sub.2, and R.sub.3 is a divalent organic group, and each of n and m is a natural number, and an adhesive containing the above epoxy-terminated polyamide, an epoxy resin and a curing agent. The epoxy-terminate polyamide is well compatible with epoxy resins and an adhesive containing the same is excellent in adhesiveness and thermal resistance.Type: GrantFiled: February 23, 1993Date of Patent: December 6, 1994Assignee: Kanegafuchi Kagaku Kogyo Kabushiki KaishaInventors: Hitoshi Nojiri, Katsunori Yabuta
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Patent number: 5369179Abstract: Disclosed is a thermoplastic flexible film suitable for wrapping static sensitive devices such as electronic circuit boards. The film is made of an inherently hydrophilic polyether block amide copolymer in blend with a compatible polymer. Compatible polymers typically are amide polymers or are acid copolymers, such as the nylons or ionomers. The film does not have a degree of hydrophilicity unsuitable for packaging static sensitive devices. Yet the film is antistatic without requiring the addition of an antistatic agent.Type: GrantFiled: May 3, 1991Date of Patent: November 29, 1994Assignee: W. R. Grace & Co.-Conn.Inventor: Marvin R. Havens
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Patent number: 5367005Abstract: The invention relates to a heatset printing ink especially suitable for the intaglio printing of security documents, particularly currency. The ink comprises: a) an epoxy resin ester reacted with an unsaturated monobasic acid and a reactive monomer, b) a cationic polyamide/ epichlorohydrin resin, c) a glycol and/or glycol ether, d) a pigment and e) a drier.Type: GrantFiled: May 12, 1994Date of Patent: November 22, 1994Assignee: Sun Chemical CorporationInventor: Solomon J. Nachfolger
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Patent number: 5344620Abstract: Water-soluble crosslinkable compounds obtainable by reaction of reactive products which contain halogenohydrin groups and have been obtained by reacting polyamines and epihalogenohydrin or 1,3-dihalogeno-2-hydroxy-propane with inorganic bases and subsequently reacting the resulting products with inorganic acids and/or organic acids, can be used as pigment binders and/or crosslinking agents in textile printing pastes.Type: GrantFiled: January 16, 1992Date of Patent: September 6, 1994Assignee: Bayer AktiengesellschaftInventors: Jurgen Reiners, Herbert Wigger, Fritz Puchner
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Patent number: 5338807Abstract: A creping aid comprising the reaction product of a polyamide of a dibasic acid or of the ester of an aliphatic dibasic acid and methyl bis(3-aminopropylamine) with epichlorohydrin in a mole ratio of the polyamide to the epichlorohydrin between about 1:0.1 and about 1:0.33, and a composition comprising an aqueous solution of the creping aid.Type: GrantFiled: December 23, 1991Date of Patent: August 16, 1994Assignee: Hercules IncorporatedInventors: Herbert H. Espy, William W. Maslanka
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Patent number: 5298558Abstract: The present invention relates to electrostatic dissipative impact modified polymeric compositions comprising an effective amount of a chain extended block copolymer, polyvinyl halide and no more than 10 weight parts of a polymeric impact modifier per 100 weight parts of polyvinyl chloride. The chain extended block copolymer is formed from reacting a di-functional polyether with a chain extender which is a condensate selected from the group consisting of polyundecanolactam, polydodecanolactam, poly(11-aminoundecanoic acid) and (12-aminododecanoic acid).Type: GrantFiled: June 2, 1992Date of Patent: March 29, 1994Assignee: The Geon CompanyInventors: Francis R. Sullivan, Elaine A. Mertzel, Craig L. Shoemaker
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Patent number: 5278255Abstract: The present invention is a process for preparing a polyaminopolymer which contains functionality comprising the steps of (a) contacting a polyfunctional amine with an unsaturated alkylating agent under reaction conditions to form an amine/unsaturated alkylating agent adduct; (b) contacting the adduct with a polyfunctional compound such that a polyaminopolymer is formed; (c) contacting the polyaminopolymer with a halogen, hypohalous acid or precursor thereof such that a polyaminopolymer having halohydrin or dihalo functionality is formed; and (d) raising the pH of the polyaminopolymer having halohydrin or vicinal dihalo functionality sufficiently to cause an increase in molecular weight. Alternatively, the invention is a process having steps (a), (b), (c) and optionally (d), but with a step (h) between steps (b) and (c) of contacting the polyaminopolymer with a crosslinking agent therefor having at least two functional groups reactive with amine groups such that a crosslinked polyaminopolymer is formed.Type: GrantFiled: August 11, 1992Date of Patent: January 11, 1994Assignee: The Dow Chemical CompanyInventors: Otha G. Weaver, Jr., Terry W. Glass, Wanda G. Buckner
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Patent number: 5244654Abstract: Internal polymeric surfaces of medical devices are provided that have enhanced biocompatibility properties. The internal polymeric surface presents an anti-thrombogenic, fibrinolytic or thrombolytic interface with body fluids such as blood flowing through medical device tubing during implantation for medical procedures. The biocompatibility enhancing agent is secured to the polymeric substrate by a spacer molecule which is covalently bound to the internal polymeric surface which had been subjected to radiofrequency plasma treatment with a low pressure plasma medium of water vapor, oxygen or combination of water vapor and oxygen gas.Type: GrantFiled: June 25, 1991Date of Patent: September 14, 1993Assignee: Cordis CorporationInventor: Pallassana V. Narayanan
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Patent number: 5213891Abstract: Block copolyetheramides, well adopted for conversion into a wide variety of useful thermoplastic elastomer shaped articles, have the formula: ##STR1## in which D is the residue of a diacid oligamide having an Mn ranging from 300 to 3,000 and/or the residue of the diacid chain limiter, PE is the residue of a polyetherdiol having an Mn ranging from 200 to 5,000,.times.is a straight or branched chain (cyclo)aliphatic or aromatic hydrocarbon having from 4 to 20 carbon atoms, n is a number ranging from 1 to 4, and m is an average number ranging from 2 to 50; these are prepared by polycondensing a multiblock polymer having the formula: ##STR2## with a diamine H.sub.2 N--X--NH.sub.2.Type: GrantFiled: January 30, 1992Date of Patent: May 25, 1993Assignee: Elf Atochem S.A.Inventors: Philippe Maj, Daniel Cuzin
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Patent number: 5187228Abstract: A monoglycidyl stabilized polycarbonate and polyamide blend comprising a polycarbonate, a polyamide, a polymeric compatabilizing agent and a monoglycidyl compatabilizing agent is provided wherein the monoglycidyl stabilizer effectively end caps the polyamide without cross linking polymer chains. The polymeric compatabilizing agent comprises a polyetherimide, a polyurethane, a linear segmented thermoplastic elastomer having an ester segment and a hard segment of semi-crystalline, partially aromatic polyamide based on diphenylmethane diisocyanate, hydroxyl containing phenoxypolymers, polyamide-polyarylate block copolymers, polyamide-polyester block copolymers, or blends thereof. The polycarbonate and polyamide blend may further comprise an impact modifying agent or an alloying agent.Type: GrantFiled: March 22, 1991Date of Patent: February 16, 1993Assignee: Dexter CorporationInventors: Peter J. Perron, Khemchand Nangrani, Ed Bourbonais
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Patent number: 5171795Abstract: A process for the manufacture of improved water soluble polyaminopolyamide-epichlorohydrin resins is disclosed. The polyaminopolyamide-epichlorohydrin reaction is continued until between 70% to 100% of the total charge of epichlorohydrin has reacted. The polyaminopolyamide-epichlorohydrin mixture is then treated with a specified amount of a halogen-free mineral acid. Preferably the mineral acid is selected from the group consisting of sulphuric acid, phosphoric acid, nitric acid and sodium hydrogen sulphate. Following the completion of the acid addition the reaction is continued to effect at least a 10% reduction in the polymer bound organochlorine concentration, based on the composition of the reaction mixture at the time of the acid addition.Type: GrantFiled: August 1, 1990Date of Patent: December 15, 1992Assignee: Hercules IncorporatedInventors: Andrew J. Miller, Brian M. Stubbs
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Patent number: 5149731Abstract: The polyarylene sulfide resin composition is improved in impact strength and rigidity and useful as engineering plastics. It is prepred by mixing 100 parts by weight of a resin component comprising(A) 99 to 20 parts by weight of a polyarylene sulfide resin and(B) 1 to 80 parts by weight of a polyamide resin with(C) 0.5 to 50 parts by weight of an olefin copolymer comprising an .alpha.-olefin and a glycidyl ester of an .alpha., .beta.-unsaturated acid,(D) 0.01 to 5 parts by weight of an alkoxysilane compound and(E) 0 to 400 parts by weight of one or more fillers selected from among fibrous, powdery and flaky ones.Type: GrantFiled: April 9, 1991Date of Patent: September 22, 1992Assignee: Polyplastics Co., Ltd.Inventors: Katsumi Uota, Hiroyuki Sano, Hajime Serizawa, Masaru Kubota
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Patent number: 5132108Abstract: Polymeric surfaces of medical devices or components of medical devices are provided that have enhanced biocompatibility properties. The polymeric surface presents an anti-thrombogenic, fibrinolytic or thrombolytic interface with body fluids such as blood during implantation or medical procedures. The biocompatibility enhancing agent is secured to the polymeric substrate by a spacer molecule which is covalently bound to the polymeric substrate which had been subjected to radiofrequency plasma treatment with a water vapor medium.Type: GrantFiled: November 8, 1990Date of Patent: July 21, 1992Assignee: Cordis CorporationInventors: Pallassana V. Narayanan, Kimberly D. Stanley
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Patent number: 5110878Abstract: Dry polyamide-epichlorohyrin resin powder that is useful to increase the wet strength of paper is prepared by freeze-drying.Type: GrantFiled: May 14, 1991Date of Patent: May 5, 1992Assignee: E. I. Du Pont de Nemours and CompanyInventor: Ronald L. Amey
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Patent number: 5093437Abstract: Novel polyamide copolymers having skeletons of a specific structure are disclosed. The polyamide copolymers have excellent resistance to hydrolysis, low temperature characteristics (low temperature softness), heat aging resistance and mechanical properties as compared to conventional polyamide copolymers. The polyamide copolymers also show excellent efficiencies in fabrication properties and transparency. In particular, the polyamide copolymers having a branched structure in the molecule thereof provide good results.Type: GrantFiled: October 1, 1990Date of Patent: March 3, 1992Assignee: Kuraray Co., Ltd.Inventors: Yukiatsu Komiya, Masao Ishida, Koji Hirai, Setuo Yamashita, Shinji Komori, Takuji Okaya
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Patent number: 5039758Abstract: Disclosed is a safe and efficient process for producing N-polyoxy-alkylated polyamides which comprises reacting polyamide in powder form under a temperature below the melting point of the polyamide with an alkylene oxide in the presence of an alkaline catalyst, and in a medium such as specificed cyclic ethers or specified alkyleneglycol dialkyl ethers.Type: GrantFiled: June 21, 1990Date of Patent: August 13, 1991Assignee: Nisso Petrochemical Industries Co., Ltd.Inventors: Takashi Tobita, Masuhiro Ikeshima, Itsuo Nakabayashi, Masahiro Shiozaki
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Patent number: 5037901Abstract: Polyaminoamides of formula: ##STR1## in which A.sub.1 represents a divalent radical of structure: ##STR2## in which a and b=0 or 1 ##STR3## in which c and d=0 or 1 ##STR4## B.sub.1 represents: 1) in the proportions of 60 to 100% (in moles), the radical ##STR5## in which x.sub.2 =2 and n.sub.1 =1 or 2, or alternatively, x.sub.1 =3 and n.sub.1 =1 and e=0 or 12) in the proportions of 0 to 40% (in moles), the radical (II) above in which x.sub.1 =2 and n.sub.1 =0 or the radical ##STR6## 3) in the proportions of 0 to 20% (in moles), the radical--NH--(CH.sub.2).sub.6 --NH--;in radicals A.sub.1 and B.sub.1, Y represents a residue of an ultraviolet radiation-absorbing molecule, anda+b+c+d+e.gtoreq.1, it being understood that when a, b, c, d or e are zero, the nitrogen atom is then bound to a hydrogen atom;the ratio ##EQU1## is between 0.05 and 0.5; A.sub.2 represents a bivalent radical which has one of the following structures: ##STR7## B.sub.Type: GrantFiled: June 27, 1989Date of Patent: August 6, 1991Assignee: L'OrealInventors: Serge Forestier, Gerard Lang, Edith Sainte Beuve
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Patent number: 5030693Abstract: Triazine compounds are prepared by the reaction of a bisphenol or a hydroxy-terminated polycarbonate with a chlorocyanurate containing epoxy and/or aromatic substituents. The compounds derived from bisphenols or protected bisphenols may be converted to polycarbonates, which form copolymers with other polymers containing acid or amine groups or derivatives thereof.Type: GrantFiled: March 19, 1990Date of Patent: July 9, 1991Assignee: General Electric CompanyInventors: Sterling B. Brown, Ronald J. Gambale, Linda L. McCracken
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Patent number: 5017642Abstract: An aqueous solution of a cationic thermosetting resin containing a very small amount of organic halogen compounds is prepared by adjusting a reaction temperature in a reaction of polyamidopolyamine with epihalohydrin and a molar ratio of the polyamidopolyamine and epihalohydrin.Type: GrantFiled: December 21, 1989Date of Patent: May 21, 1991Assignee: Sumitomo Chemical Company, LimitedInventors: Toshiyuki Hasegawa, Hisao Takagishi, Hiroshi Horiuchi
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Patent number: 5008346Abstract: A fusible, rod-like, graft copolymer having repeating units of the formula: ##STR1## wherein X is (--CH.sub.2 CH.sub.2 CONH--).sub.m or (--CH.sub.2 --CH(CH.sub.3)--O--).sub.n, wherein m has an average value of 5.0 to 35.0 and n has an average value of 1.0 to 30.0.Type: GrantFiled: April 28, 1989Date of Patent: April 16, 1991Assignee: The United States of America as represented by the Secretary of the Air ForceInventors: Robert C. Evers, Thuy D. Dang, D. Roger Moore
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Patent number: H1613Abstract: A process for reducing the concentration of epichlorohydrin by-products in the manufacture of polyamide-epichlorohydrin resins, comprising reacting polyaminopolyamide prepolymer in aqueous solution with epichlorohydrin and an immiscible solvent for the epichlorohydrin, continuing the reaction of the prepolymer with the epichlorohydrin to produce the desired viscosity of the aqueous phase, stabilizing the resin product by diluting or acidifying the aqueous phase, separating the solvent from the aqueous resin, and treating the solvent phase with caustic to convert epichlorohydrin by-products to epichlorohydrin for recycling.Type: GrantFiled: June 23, 1994Date of Patent: November 5, 1996Assignee: Hercules IncorporatedInventor: Herbert H. Espy