From At Least One Blocked -n=c=x Group Patents (Class 528/45)
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Patent number: 6855792Abstract: The present invention relates to new cross-linking agents and thermosetting paints, which lead to improved properties such as scratch resistance of cured thermosetting paints or exhibit good solubility.Type: GrantFiled: January 31, 2001Date of Patent: February 15, 2005Assignee: Degussa AGInventors: Peter Speier, Friedrich Plogmann, Rainer Lomoelder, Andreas Wenning, Emmanouil Spyrou
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Patent number: 6855779Abstract: A low VOC clear coat composition which comprises an epoxy compound, a melamine component and an aliphatic polyisocyanate having an average of 2 to 6 isocyanate functionalities, and optionally contains a catalyst (e.g., organotin catalysts, acid catalysts and combinations); a polyhydroxyl functional compound (e.g., polycarbonate polyol); or other additives (e.g., light absorbers and light stabilizers). Also disclosed is an article coated with the clear coat composition, a process of making the composition, and a process of applying the composition to, for example, an automobile body.Type: GrantFiled: March 16, 2000Date of Patent: February 15, 2005Assignee: E. I. du Pont de Nemours and CompanyInventors: Isao Nagata, Peter William Uhlianuk, Donald A. White
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Patent number: 6846550Abstract: An adhesive film for underfill which relaxes the stress formed in the wiring circuit substrate, semiconductor element and electrode parts for connection. The adhesive film is a quickly hardening type, and forms a highly heat resistant sealing resin layer quickly between the wiring circuit substrate and semiconductor element of a semiconductor device.Type: GrantFiled: November 12, 2003Date of Patent: January 25, 2005Assignee: Nitto Denko CorporationInventors: Akiko Matsumura, Kazuki Uwada, Naoki Sadayori, Yuji Hotta
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Patent number: 6843933Abstract: Blocked polyisocyanates, their preparation and use in one-component coating materials. In organic polyisocyanates having at least two isocyanate groups, the isocyanate groups are blocked with OH acidic cyclic ketones of the general formula (I). The blocked polyisocyanate system of the invention reacts without elimination of the blocking agent and possesses low crosslinking temperatures.Type: GrantFiled: June 10, 2003Date of Patent: January 18, 2005Assignee: Bayer AktiengesellschaftInventors: Michael Schelhaas, Christoph Gürtler, Beate Baumbach, Christian Füssel
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Publication number: 20040266970Abstract: Blocked polyisocyanates and one-component stoving systems containing these, and the preparation thereof and their use for the preparation of lacquers, paints, adhesives and elastomers. The blocked polyisocyanates are derived from polyisocyanates reacted with secondary amines and cationic, anionic and/or nonionic hydrophilizing agents such that they are incorporated into the polyisocyanate at a ratio of from 20:1 to 1:1.Type: ApplicationFiled: June 23, 2004Publication date: December 30, 2004Inventors: Jan Mazanek, Christoph Thiebes, Jurgen Meixner, Olaf Fleck, Heino Muller
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Publication number: 20040266969Abstract: Blocked polyisocyanates and one-component stoving systems containing these, and the preparation thereof and their use for the preparation of lacquers, paints, adhesives and elastomers. The blocked polyisocyanates are prepared by reacting polyisocyanates with secondary amines.Type: ApplicationFiled: June 23, 2004Publication date: December 30, 2004Inventors: Jan Mazanek, Reinhard Halpaap, Markus Mechtel, Thomas Klimmasch, Christoph Thiebes
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Patent number: 6827875Abstract: The present invention relates to new blocked polyisocyanates with which high-grade, emission-free coatings and lacquer coatings with reduced yellowing values can be obtained, to a method of producing them, and to the use thereof in one-component polyurethane systems, particularly as crosslinking agents in automobile primer surfacers.Type: GrantFiled: June 28, 2002Date of Patent: December 7, 2004Assignee: Bayer AktiengesellschaftInventors: Michael Schelhaas, Christoph Gürtler
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Publication number: 20040242833Abstract: The invention relates to a method for the production of masked (poly)isocyanates using a masking agent with a C═N bond and a labile hydrogen atom on the &agr; atom relative to the nitrogen of the C═N group, characterised in comprising the following steps: a) preparation of a masking agent with a C═N bond and a labile hydrogen atom on the &agr; atom relative to the nitrogen of the C═N group which may be obtained by condensation of an aldehyde or ketone precursor with a nitrogen-containing precursor which has a functional group reactive towards the carbonyl moiety of the aldehyde or ketone, in an aqueous, organic or hydroorganic medium with liberation of water of condensation; b) in situ reaction of the masking agent with a (poly)isocyanate component for masking to give said (poly)isocyanates which are totally or partially masked.Type: ApplicationFiled: July 6, 2004Publication date: December 2, 2004Inventor: Jean-Marie Bernard
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Publication number: 20040236021Abstract: A solid isocyanate-based composition having a glass transition temperature of at least 30° C. is produced by at least partially blocking the isocyanate groups of a polyisocyanate with a compound corresponding to the specified Formula I. This blocked isocyanate composition is useful in the production of powder coatings which are capable of being cured at temperatures of from 80 to 220° C.Type: ApplicationFiled: May 23, 2003Publication date: November 25, 2004Inventors: Thomas Faecke, Ramesh Subramanian, James W. Rawlins, Eric J. Vidra
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Patent number: 6815501Abstract: Dual cure coating composition comprising resin solids, said resin solids being composed of (a) 30 to 90 wt. % of at least one hydroxy-functional polyester urethane having olefinic double bonds, (b) 0 to 60 wt. % of at least one binder other than the polyester urethane (a) and/or at least one reactive diluent, and (c) 10 to 50 wt.Type: GrantFiled: April 9, 2002Date of Patent: November 9, 2004Assignee: E. I. du Pont de Nemours and CompanyInventors: Carmen Flosbach, Thomas Fey, Eva Frigge
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Patent number: 6812316Abstract: The curable coating compositions of the invention comprise a particulate component having at least one binder component (a) which is a solid at 75° F./24° C., and an additive component (b). The curable coating compositions further comprise a crosslinking component (c) reactive with the at least one binder component (a). Additive component (b) has from 12 to 72 carbon atoms, is substantially free of any heteroatoms, is not a crystalline solid at 75° F./24° C. and comprises a mixture of two or more structures selected from the group consisting of aliphatic structures for additive component (b), aromatic-containing structures for additive component (b), cycloaliphatic-containing structures for additive component (b), and mixtures thereof, wherein at least one of the two or more structures is either a cycloaliphatic-containing structure or an aromatic-containing structure.Type: GrantFiled: September 30, 2002Date of Patent: November 2, 2004Assignee: BASF CorporationInventors: Walter H. Ohrbom, David J. Law, Robert D. Weise
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Publication number: 20040214912Abstract: Coating materials curable thermally and with actinic radiation, comprisingType: ApplicationFiled: January 13, 2004Publication date: October 28, 2004Inventors: Heinz-Peter Rink, Hubert Baumgart, Uwe Conring
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Patent number: 6806340Abstract: Polyurethane coatings which are the reaction product of A) an aliphatic, isocyanate-containing prepolymer having an isocyanate content of 1-8 wt. % and a free monomeric diisocyanate content of less than 2 wt. %, and containing 0.1 to 1.5 moles of per 1000 g of prepolymer of aliphatically bound uretdione and oxadiazinetrione groups, and B) a polyol component B) comprising at least 50 equivalent % of a compound corresponding to the formula HO—X—Y—X—OH where Y represents methylene, ethylene, —C≡C—, cyclohexylene-1,4, -1,3, -1,2, or phenylene-1,4, -1,3, -1,2 and X represents methylene, —OCH2CH2— (the oxygen being bound to the Y), or cyclohexylene-1,4, -1,3, -1,2, and where the equivalent ratio of the free NCO groups to isocyanate-reactive groups is 0.90 to 1.5. The coatings are applied to flexible substrates such as textile or leather by the casting or knife coating process by means of reactive compositions.Type: GrantFiled: August 27, 2002Date of Patent: October 19, 2004Assignee: Bayer AktiengesellschaftInventors: Stefan Groth, Detlef-Ingo Schütze
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Publication number: 20040202868Abstract: The present invention relates to novel polyurethane prepolymers (PU prepolymers) of low viscosity containing NCO groups blocked with compounds containing phenol groups and to their use for producing polyurethane polymers. The PU prepolymers are prepared by reacting one or more diisocyanates or polyisocyanates with at least one isocyanate-reactive compound with a functionality of at least 1.5 to form an NCO-functional polyurethane prepolymer and subsequently blocking the free NCO groups with at least one hydrocarbon resin containing phenolic OH groups and/or one optionally substituted phenol in the presence of a catalyst which comprises at least one triorganoamine.Type: ApplicationFiled: April 5, 2004Publication date: October 14, 2004Inventors: Michael Mager, Thomas Stingl
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Publication number: 20040198941Abstract: A self-crosslinking, branched polyurethane preparable by reactingType: ApplicationFiled: February 4, 2004Publication date: October 7, 2004Inventors: Stephan Schwarte, Willi Vesper, Jose-Ignacio Anaya-Sanz, Alain Ledantec
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Publication number: 20040171785Abstract: Novel one-component polyurethane systems, to their preparation and use for preparing paints, inks and adhesives. The one-component polyurethane systems include one or more organic and/or inorganic compounds of molybdenum and/or of tungsten in which the molybdenum and/or tungsten has an oxidation state of at least +4.Type: ApplicationFiled: February 20, 2004Publication date: September 2, 2004Inventors: Christoph Gurtler, Jan Mazanek, Joachim Petzoldt, Heinz Schmidt, Stephan Nowak
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Patent number: 6784243Abstract: The invention relates to polyurethane-polyurea dispersions, also called PU dispersion, which contain aralkylamine-blocked isocyanate groups, and to their preparation and use. This blocking agent ahs a significantly lower deblocking temperature as compared with the prior art. Coatings produced from this dispersion have high hydrolysis resistances. The arylamine-blocked isocyanate groups are composed of polyisocyanates, polymeric polyols having average molar weights of 400 to 6000, at least one blocking agent, and either or both of nonionically hydrophilicizing compounds or compounds having at least one ionic or potentially ionic group.Type: GrantFiled: June 10, 2003Date of Patent: August 31, 2004Assignee: Bayer AktiengesellschaftInventors: Thorsten Rische, Karin Naujoks, Thomas Feller, Christoph Gürtler, Jan Mazanek
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Publication number: 20040162389Abstract: The present invention provides a reaction product of reactants comprising:Type: ApplicationFiled: February 5, 2004Publication date: August 19, 2004Inventors: Michael A. Mayo, Steven V. Barancyk, Jane N. Valenta, Sherry M. Gaggini, William A. Humphrey
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Publication number: 20040147704Abstract: The invention relates to novel blocked polyurethane prepolymers, to a process for their preparation, to reactive systems prepared therefrom that cure at room temperature, and to their use.Type: ApplicationFiled: December 17, 2003Publication date: July 29, 2004Inventors: Kamelia Detig-Karlou, Joachim Simon, Michael Mager, Thomas Stingl, Christoph Gurtler, Michael Schelhaas
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Publication number: 20040143084Abstract: The invention relates to new blocked polyurethane prepolymers, a process for their production and reactive systems produced therefrom that harden at room temperature, and their use.Type: ApplicationFiled: November 10, 2003Publication date: July 22, 2004Inventors: Kamelia Detig-Karlou, Joachim Simon, Malte Homann, Thomas Stingl, Jorg Tillack
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Publication number: 20040137155Abstract: This document discloses a clear, polymeric composition that provides both abrasion resistance and non-fogging properties. The composition may be applied to plastic or glass with or without the use of a solvent carrier, or may be cast into a molded article. The fully cured composition provides a fog-free surface that repels condensation while the interior of the polymeric deposition provides a hydrophilic environment for the absorption of water vapor. This combination of properties is highly efficacious and permanent, functioning independent of any additional non-fogging additives. The current invention is composed of an isocyanate prepolymer and a water-soluble polyhydroxl polymer. An absence or surfactants or crosslinking additives/chain extenders makes the current invention innovative amongst prior art, relying totally upon the inventors' use of certain unique material combinations.Type: ApplicationFiled: January 13, 2003Publication date: July 15, 2004Applicant: Exxene CorporationInventors: Edward A. Bernheim, Benjamin W. Raglin
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Patent number: 6762272Abstract: Provided is a composition useful for obtaining a high gloss coating, for example, a high gloss paint. The composition includes an isocyanate which is at least partially masked by one or more masking agent, and having a degree of liberation with respect to the masking agent at 120 ° C. of 5 % or less. A polyol has a glass transition temperature of about 40° C. or more, a hydroxyl number of about 20 mg KOH/g or more and an average molecular weight Mn of about 500 g/mol or more. Also provided is a process for preparing the composition, wherein the isocyanate, the polyol and any other components are preblended in a blender. The polyol and other meltable components of the blend are melted, homogenized and dispersed in an extruder having one or more screws. Further provided are paint compositions, wherein the paint is a high gloss paint. The compositions are environmentally friendly and result in high gloss coatings having beneficial mechanical properties.Type: GrantFiled: February 3, 2000Date of Patent: July 13, 2004Assignees: Cray Valley IbericaInventors: Pierre Ardaud, Francis John Williams, Jean-Marie Bernard, Bernard Vogin
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Patent number: 6761973Abstract: The present invention provides a cationic resin composition comprising a cationic resin (A) and a blocked polyisocyanate (B) obtained by reacting an active hydrogen-containing component comprising a diol (a) which has two hydroxyl groups having different reactivities from each other and which has a molecular weight of 76 to 150 and a carboxyl group-containing diol (b) having a molecular weight of 106 to 500 with a polyisocyanate compound (c).Type: GrantFiled: September 5, 2002Date of Patent: July 13, 2004Assignee: Kansai Paint Co., Ltd.Inventors: Shigeo Nishiguchi, Koji Kamikado, Souichi Ikejiri, Hideki Iijima
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Patent number: 6753386Abstract: The present invention relates to a film forming composition, a method of forming the composition, and application of the composition to coating formulations which provide a cured coating having acid rain resistance. A film-forming polyurethane polyol composition comprises a reaction product of an n-functional isocyanate (wherein n is a number ranging from about 2 to about 5) with at least one diol or triol or mixtures thereof and a compound containing isocyanate-reactive functional groups, preferably a monofunctional alcohol or thiol. The low viscosity polyurethane polyol of the present invention is typically crosslinked/cured using a melamine to produce a cured coating which is highly acid etch resistant as well as having other desirable physical-mechanical properties. The coating compositions have improved flow characteristics compared to compositions containing polyurethane polyols prepared without the monofunctional alcohols or thiols.Type: GrantFiled: December 16, 1997Date of Patent: June 22, 2004Assignee: Akzo Nobel N.V.Inventors: Alexander Leo Yahkind, Ian Wagstaff, Frederick Herbert Walker
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Patent number: 6743484Abstract: Reactive compositions which consist of or comprise (A) at least one polyisocyanate whose isocyanate groups have been partly or fully blocked with propargyl alcohol, (B) at least one constituent which contains on average at least two isocyanate-reactive functional groups in the molecule, and (C) at least one catalyst which catalyzes the addition reaction of the isocyanate-reactive functional groups of (B) with the acetylenically unsaturated triple bond of the propargyl groups, and their use as coating materials, adhesives, and sealing compounds.Type: GrantFiled: November 25, 2002Date of Patent: June 1, 2004Assignee: BASF Coatings AGInventors: Gunther Ott, Georg Schön, Hardy Reuter, Joachim Woltering, Ulrike Röckrath
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Publication number: 20040102598Abstract: A polyurethane having a thiol substituent pendant from at least one nitrogen and/or at least one carbon atom of the polyurethane.Type: ApplicationFiled: September 26, 2003Publication date: May 27, 2004Inventors: Ivan Alferiev, Ilia Fishbein, Robert J. Levy
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Patent number: 6740726Abstract: A description is given of polyisocyanates of the formula I in which R and R′ are identical or different and are alkyl groups having 1-4 carbon atoms and n is on average from 1.5 to 5 and also of a process for preparing these polyisocyanates in which a polyamine of the formula II in which R, R′, and n are as defined above, is reacted with phosgene. The new polyisocyanates are suitable for producing crosslinked polyurethanes from reaction mixtures with low solvent content and for producing coating compositions or adhesives. Also described are the coating compositions and adhesives, and their use.Type: GrantFiled: August 14, 2002Date of Patent: May 25, 2004Assignee: BASF AktiengesellschaftInventors: Jochem Henkelmann, Heiko Maas, Gerhard Schulz, Armin Stamm, Heinz-Peter Rink, Werner-Alfons Jung, Peter Schwab
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Publication number: 20040097686Abstract: The invention concerns an isocyanate composition useful for applying powder paints. Said composition is characterized in that it contains a masked isocyanate compound and an unmasked cycloaliphatic isocyanate compound. The invention is applicable in the chemistry of paints.Type: ApplicationFiled: November 6, 2003Publication date: May 20, 2004Inventors: Jean-Marie Bernard, Bernard Vogin
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Publication number: 20040097687Abstract: The present invention relates to novel storage-stable blocked polyisocyanates, to a process for their preparation and to their use in the production of polyurethane materials and coatings.Type: ApplicationFiled: November 14, 2003Publication date: May 20, 2004Inventors: Christoph Thiebes, Hans-Josef Laas, Reinhard Halpaap, Dorota Greszta-Franz
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Publication number: 20040092657Abstract: The invention concerns an isocyanate composition at least partially masked, characterized in that it is masked by at least two agents, one of which at least has a non-carbon carboxylic function. The invention is applicable to organic synthesis.Type: ApplicationFiled: November 4, 2003Publication date: May 13, 2004Inventor: Jean-Marie Bernard
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Patent number: 6730405Abstract: This invention relates to a polyisocyanate composition having a mean functionality of greater than 3, obtained by polycondensation of diisocyanate or triisocyanate monomers. The invention also relates to a reactive coating composition comprising the isocyanate composition defined above and a polyol having a hydroxyl number of between approximately 50 and approximately 250 and a number [lacuna] molar mass of between approximately 500 and approximately 15 000, said coating composition exhibiting a good pot life and a rapid rate of crosslinking at ambient temperature, to produce a crosslinked coating possessing good properties of surface hardness, of flexibility and of impact resistance.Type: GrantFiled: March 27, 2002Date of Patent: May 4, 2004Assignee: Rhodia ChimieInventors: Jean-Marie Bernard, Ming J. Chen, Qiwen Han
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Patent number: 6727341Abstract: A stable and high-solids aqueous dispersion of blocked isocyanates, containing auxiliary solvent, is prepared by (1) preparing a solution of a polyisocyanate mixture of from 20-70% by weight of a blocked, hydrophilically modified polyisocyanate (A) and from 30-80% by weight of a blocked, hydrophobic polyisocyanate (B) in an auxiliary solvent (G) and (2) adding water to this solution, with intensive mixing, in an amount which is such as to give a two-phase system comprising a disperse polyisocyanate phase and a continuous, aqueous phase containing auxiliary solvent. In a preferred embodiment of the invention dispersions are prepared which are virtually free from auxiliary solvent, by first adding a portion of water to the solution (1), substantially removing the auxiliary solvent with intensive mixing and then adding a second portion of water with intensive mixing to the mixture comprising the polyisocyanates (A) and (B) and the first portion of water.Type: GrantFiled: October 19, 2001Date of Patent: April 27, 2004Assignee: Degussa AGInventors: Hartwig Lange, Klaus Janischewski, Dirk Reichel
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Patent number: 6723817Abstract: The present invention relates to a blocked polyisocyanate containing: A1) 40 to 70 equivalent % of a predominantly linear NCO prepolymer having an NCO content of 5.0 to 10.0 wt. %, A2) 30 to 60 equivalent % of an aliphatic lacquer polyisocyanate, B1) 30 to 60 equivalent % of epsilon-caprolactam and B2) 40 to 70 equivalent % of diisopropylamine or 1,2,4-triazole as blocking agents, wherein the equivalent percents of isocyanate components A1) and A2) add up to 100 %, and the equivalent percents of blocking agents B1) and B2) add up to 100 to 110%, based on the equivalents of component A). The present invention also relates to a process for preparing these blocked polyisocyanates to coating compositions containing these blocked polyisocyanates and to metal substrates coated with these coating compositions.Type: GrantFiled: November 18, 2002Date of Patent: April 20, 2004Assignee: Bayer AktiengesellschaftInventors: Eberhard König, Beate Baumbach, Christian Füssel
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Publication number: 20040067318Abstract: Mixed and hybrid blocked polyisocyanates as cross linking agents in coating compositions, having at least one 1,3-dicarbonyl blocking group and at least one thermally active blocking group such that the molar ratio of 1,3-dicarbonyl blocking groups to thermally active blocking groups is in the range of from 4:1 to 1:9, offer improved intercoat adhesion when overcoated and good stability.Type: ApplicationFiled: August 14, 2003Publication date: April 8, 2004Inventors: Richard Garfield Jones, Ian Kevin Rimmer, Claire Louse Bolton, Peter Hargreaves
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Patent number: 6716910Abstract: The invention relates to aqueous and/or water-dilutable polyisocyanate crosslinkers blocked with diisopropylamine, to their preparation and use in one-component baking lacquers, for example as fillers in automotive lacquering.Type: GrantFiled: July 10, 2002Date of Patent: April 6, 2004Assignee: Bayer AktiengesellschaftInventors: Eberhard König, Jan Mazanek, Heino Müller, Joachim Petzoldt
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Patent number: 6713587Abstract: The present invention relates to an electrodepositable coating composition having a resinous phase dispersed in an aqueous medium. The resinous phase includes (a) an ungelled, active hydrogen-containing, ionic salt group-containing resin; and (b) a curing agent reactive with the active hydrogens of the resin (a). The resinous phase has a covalently bonded halogen content based on total weight of resin solids present in the resinous phase such that when the composition is electrodeposited and cured, the cured film passes flame resistance testing in accordance with IPC-TM-650, and has a dielectric constant of less than or equal to 3.50. The invention also is directed to a method for forming a dielectric coating on an electroconductive substrate using the electrodepositable coating composition, as well as to a substrate coated with the electrodepositable composition.Type: GrantFiled: June 27, 2002Date of Patent: March 30, 2004Assignee: PPG Industries Ohio, Inc.Inventors: Gregory J. McCollum, Thomas C. Moriarity, Kevin C. Olson, Michael G. Sandala, Alan E. Wang, Craig A. Wilson, Steven R. Zawacky
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Patent number: 6710151Abstract: The end-blocked isocyanate prepolymer having an oxadiazine ring according to the present invention is characterized in that at least one of isocyanate groups of a NCO-terminated isocyanate prepolymer, which has NCO groups at the ends and comprises units derived from an oxadiazinetrione compound (A) represented by the following formula (1) and units derived from an active hydrogen compound (B) represented by the following formula (2), is blocked with a unit derived from an end-blocking agent (C) having at least one active hydrogen in one molecule, and that the end-blocked isocyanate prepolymer has a softening point of not lower than 50° C.Type: GrantFiled: November 12, 2002Date of Patent: March 23, 2004Assignee: Mitsui Chemicals, Inc.Inventors: Toshiaki Kuwatsuka, Hideaki Ogata, Manabu Shimoda, Ryuuji Haseyama, Izumi Mega
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Patent number: 6706835Abstract: Adhesion promoting compounds or resins containing a thiazole functionality (including benzothiazole) and a polymerizable functionality (Z) give improved adhesive strength to metal substrates. A representative structure is the following, in which R1 and R2 together can form a cyclic or aromatic structure, or are linear or branched organic moieties.Type: GrantFiled: July 19, 2002Date of Patent: March 16, 2004Assignee: National Starch and Chemical Investment Holding CorporationInventor: Osama M. Musa
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Publication number: 20040049000Abstract: A water based coating composition prepared by dispersing by use of a suspension stabilizer into water a film-forming component of 30 to 90 percent by weight of (a) a blocked isocyanate compound having at least two blocked isocyanate groups in one molecule and a number average molecular weight of 150 to 5000, and 10 to 70 percent by weight of (b) a methylol group or methylol ether group-containing aminoplast crosslinking agent. The film-forming component can be dispersed into water in the form of a mean particle size by a 50 percent cumulative particle size of 0.1 to 10 &mgr;m. The coating film-forming component in the water based coating composition is very stable in water and is particularly suitable for the water-based coating composition. The coating film-forming component scarcely shows solubility and dispersibility into water by itself, but dispersion thereof with the suspension stabilizer shows excellent dispersion stability.Type: ApplicationFiled: April 3, 2003Publication date: March 11, 2004Inventors: Takashi Okubo, Takato Adachi, Hisashi Isaka, Takeshi Fujii, Hiroshi Igarashi
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Patent number: 6703443Abstract: A new and useful nonaqueous liquid pigment dispersion is provided which is easy to handle and produces thorough and effective colorations within target media, particularly as compared to standard solid pigments or high-viscosity liquid pigment dispersions. More specifically, the present invention relates to liquid pigment dispersions possessing viscosities of at most 5,000 centipoise at standard temperature and pressure. Such a low viscosity is obtained through the addition of relatively low amounts of aprotic viscosity modifiers possessing dipole moments of at between about 1.0 and 5.0, alternatively measured in terms of a flash point between about −20° C. and 180°, such as, most preferably cyclic carbonates.Type: GrantFiled: September 13, 2002Date of Patent: March 9, 2004Assignee: Milliken & CompanyInventors: Jusong Xia, Mark E. Ragsdale, Eric B. Stephens
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Patent number: 6703471Abstract: Low-odor, storage-stable monomer-containing polyisocyanurate is prepared from isophorone diisocyanate by conducting a partial trimerization for 3 minutes to 3 hours in the presence of 0.05-2% by weight of a catalyst, based on the weight of the diisocyanate, the catalyst having the formula [R—NX3]m⊕mY⊖ wherein Y⊖ is a carboxylic acid anion of 4-8 carbons, R is a &bgr;-hydroxyalkyl group of 2-6 carbons, X is an alkylene group of 2-3 carbons and m is a number from 1.0 to 2.0. The three radicals X form a ring with the quaternary nitrogen by way of a common nitrogen atom, which may be partly &bgr;-hydroxyalkylated, said ring optionally having an OH group positioned &agr;, &bgr; or &ggr; to the nitrogen. The reaction proceeds at a temperature of 0-160° C.Type: GrantFiled: June 27, 2002Date of Patent: March 9, 2004Assignee: Degussa AGInventors: Stephan Kohlstruk, Manfred Kreczinski, Rainer Lomölder
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Patent number: 6696539Abstract: A blocked isocyanate group-containing resin composition and a thermosetting resin composition using the same that comprise a resin (C) obtainable by modifying a resin (A) having two or more blocked isocyanate groups of a specific molecular structure in one molecule with a specific monohydric alcohol (B), and by replacing the substituent of the blocked isocyanate groups with a group having a larger number of carbon atoms, thereby lowering solubility parameter value. The compositions exhbit good storage stability and good compatibility with base resins for paint.Type: GrantFiled: February 20, 2002Date of Patent: February 24, 2004Assignee: Kansai Paint Co., LtdInventors: Masami Kobata, Hiromi Harakawa, Hidekazu Ishii
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Publication number: 20040026658Abstract: A composition for optical material according to the present invention comprises as essential components, (a) a compound having in one molecule at least one group selected from the group consisting of isocyanate group and isothiocyanate group; (b) a compound having at least one mercapto group in one molecule; and (c) at least one inorganic component selected from the group consisting of sulfur, selenium, and inorganic compounds containing sulfur and/or selenium. A material produced by curing the composition by polymerization has a sufficiently high mechanical strength, and well-balanced optical, properties, i.e., high refractive index and large Abbe's number, and is suitable as an optical material.Type: ApplicationFiled: March 7, 2003Publication date: February 12, 2004Inventors: Yuichi Yoshimura, Motoharu Takeuchi, Hiroshi Horikoshi
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Publication number: 20040030087Abstract: A light-colored water based intercoat coating composition containing a hydroxyl group-containing resin (A), a curing agent (B) and a color pigment (C), a resulting coating film having a lightness index or a L value of 80 or more, the curing agent (B) being a blocked polyisocyanate curing agent (B1) blocked with a pyrazole blocking agent.Type: ApplicationFiled: July 31, 2003Publication date: February 12, 2004Inventors: Hideaki Katsuta, Hideo Sugai, Shingo Sato, Fumio Yamashita
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Publication number: 20040030086Abstract: Blocked polyisocyanates, their preparation and use in one-component coating materials. In organic polyisocyanates having at least two isocyanate groups, the isocyanate groups are blocked with OH acidic cyclic ketones of the general formula (I). The blocked polyisocyanate system of the invention reacts without elimination of the blocking agent and possesses low crosslinking temperatures.Type: ApplicationFiled: June 10, 2003Publication date: February 12, 2004Inventors: Michael Schelhaas, Christoph Gurtler, Beate Baumbach, Christian Fussel
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Patent number: 6682779Abstract: Disclosed are aqueous polyurethane compositions which contain at least one aqueous polyurethane dispersion, at least one compound blocked with isocyanate groups, at least one means for improving sliding behaviour, at least one surface-active and flow-control agent as well as optionally conventional bonding agents, dyes and/or pigments. Said aqueous polyurethane dispersions are useful for coating elastomers for obtaining a surface that has a very low coefficient of friction. Elastomer components that are coated according to the invention are useful for sealing window channels, for moveable glass components and/or as profiled joints in vehicle manufacturing, preferably in automobile manufacturing.Type: GrantFiled: July 19, 2002Date of Patent: January 27, 2004Assignee: Henkel Kommanditgesellschaft auf AktienInventors: Rainer Wefringhaus, Richard Hemel
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Patent number: 6680358Abstract: The present invention relates to a new liquid, storage-stable coating composition, which is suitable for the production of coatings which have an outstanding resistance to external weathering, and binders thereof which are composed of a hardener component comprising an aminoplast resin and/or a blocked polyisocyanate and a specific polyol component of selected units, and to its use for the production of weathering-resistant coatings on any desired heat-resistant substrates.Type: GrantFiled: July 18, 2002Date of Patent: January 20, 2004Assignee: Bayer AktiengesellschaftInventors: Christian Wamprecht, Christian Füssel, Karl-Ludwig Noble
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Patent number: 6677424Abstract: The invention relates to a coating composition comprising at least one OH-functional binder component and at least one component compound, functioning as a crosslinking agent, which has NCO groups blocked with a pyrazole compound.Type: GrantFiled: January 7, 2002Date of Patent: January 13, 2004Assignee: BASF Coatings AGInventors: Hans-Jünrgen Figge, Georg Wigger, Marita Schilling
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Patent number: 6670445Abstract: Disclosed are a curable resin composition, which is liquid and therefore has good workability before curing and which can be softened or liquefied at a temperature lower than the thermal decomposition temperature in a short time after curing and a curable compound used in the composition as well as a method of easily disassembling a cured material. The curable compound has at least one thermally dissociable group (a) that does not participate in crosslinking reaction and at least two groups (b) participating in crosslinking reaction selected from the group consisting of an isocyanate group, a blocked isocyanate group, an alkoxysilyl group, an epoxy group, an acid anhydride group, an amino group, a latent amino group, a mercapto group and a carboxyl group.Type: GrantFiled: April 1, 2002Date of Patent: December 30, 2003Assignee: The Yokohama Rubber Co., Ltd.Inventor: Hiroyuki Okuhira
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Publication number: 20030232953Abstract: The invention relates to aqueous and/or water-dilutable blocked polyisocyanates, their preparation and use in optionally self-crosslinking one-component systems.Type: ApplicationFiled: June 10, 2003Publication date: December 18, 2003Inventors: Christoph Gurtler, Jan Mazanek, Joachim Petzoldt, Heino Muller