Iso- Or Thio-cyanate Moiety Reacted In Curing Patents (Class 156/331.4)
-
Patent number: 7728096Abstract: The present invention is an adhesive suitable for use in the production of engineered wood products, said adhesive comprised of an aromatic diisocyanate (99.0-10.0 parts by mass) and an aromatic petroleum distillate (1.0-90.0 parts by mass) with low volatility. The adhesive composition may result in improved coverage or distribution on the outer surface of raw materials, such as strands, particles, flakes, fibers, or veneer.Type: GrantFiled: December 12, 2006Date of Patent: June 1, 2010Assignee: Weyerhaeuser NR CompanyInventors: Jack G Winterowd, Erik M Parker, Cheng Zhang, Daniel V Hanson
-
Publication number: 20100119853Abstract: The invention aims to provide a resin primer which can stick an insulator layer to a conductor foil whereof the surface is not much roughened with sufficient adhesive force, a conductor foil with resin, a laminated sheet and a method of manufacturing same. The resin primer of the invention comprises a resin having film-forming ability and a breaking energy of 0.15 J or more. The conductor foil with resin of the invention comprises a resin layer comprising a conductor foil and the aforesaid resin primer. Further, the laminated sheet of the invention comprises the conductor foil, an insulating layer disposed facing the conductor foil, and a resin layer comprising the aforesaid resin primer disposed between the conductor foil and insulating layer so that it is in contact therewith. This laminated sheet can be manufactured by heating and pressurizing a laminate comprising the aforesaid conductor foil with resin, and a prepreg laminated on this resin layer.Type: ApplicationFiled: January 15, 2010Publication date: May 13, 2010Inventors: Kenji Tanaka, Kazumasa Takeuchi, Nobuyuki Ogawa, Katsuyuki Masuda
-
Publication number: 20100116434Abstract: The present invention relates to hot melt polyurethanes. The polyurethane can include a polyol and both a pure and polymeric polyisocyanate. Generally the polyurethane can be used to improve pitch resistance in building materials.Type: ApplicationFiled: January 21, 2010Publication date: May 13, 2010Inventors: John Fromwiller, Alyssa Brindel
-
Publication number: 20100108260Abstract: Two-component adhesive for bonding wood materials, comprising an isocyanate-containing component A and an amine-containing component B, component A comprising an isocyanate-terminated prepolymer having an isocyanate functionality of ?1.7, preferably of 1.7<fNC0<3, more preferably in the range from 2 to 3; and component B comprising at least one diamine and/or polyamine, preferably a polyetherdiamine and/or polyether-polyamine. An adhesive of this kind permits not only surprisingly advantageous properties on the part of the resulting bond but also bonds which can be accomplished very rapidly.Type: ApplicationFiled: February 5, 2008Publication date: May 6, 2010Applicant: NOLAX AGInventors: Alfred Rasche, Catherine Baron, Fabian Leuthard, Damien Ferrand, Karl Huber, Adrian Schulthess
-
Publication number: 20100084091Abstract: Room temperature curing structural adhesive compositions including polyurethane oligomers having multi-methacrylate functionality, cycloalkylmethacrylate, at least one maleimide-functionalized compound and a cure system are disclosed. These compositions exhibit enhanced high temperature properties, including hot strength, heat/humidity strength, and heat aging strength, without compromising initial tensile strength and fixture speeds and still possessing a room temperature cure.Type: ApplicationFiled: December 8, 2009Publication date: April 8, 2010Applicant: Henkel CorporationInventors: Susan Lamtroung Levandoski, Christopher J. Verosky, Brian M. Czabaj
-
Patent number: 7662469Abstract: The present invention relates to a composite element composed of rigid polyurethane foam and of two outer layers, wherein at least one outer layer is a molding modified with microcapsules, and the microcapsules comprise a polymer as capsule wall and a capsule core composed mainly of latent-heat-accumulator material.Type: GrantFiled: August 4, 2005Date of Patent: February 16, 2010Assignee: BASF AktiengesellschaftInventors: Marco Schmidt, Volker Schmidt
-
Patent number: 7645831Abstract: Reactive hot melt adhesives compositions with long open time and/or high green strength are prepared by the use of urethane diols. These results are achievable at moderate/low application viscosity or low application temperature.Type: GrantFiled: March 26, 2004Date of Patent: January 12, 2010Assignee: Henkel AG & Co. KGaAInventors: Andrew Slark, Neal Williams, Gavin Toovey
-
Patent number: 7641968Abstract: There are provided a moisture-curable polyurethane hot melt adhesive containing a urethane prepolymer obtained by reacting a polyol (A) with a polyisocyanate (B), wherein the polyol (A) contains 40 to 80 mass % of a polycarbonate polyol (a1), 5 to 40 mass % of polytetramethylene glycol (a2), and 5 to 40 mass % of a polyester polyol (a3) obtained by reacting a polycarboxylic acid containing an aliphatic polycarboxylic acid and an aromatic polycarboxylic acid with a polyether polyol obtained by adding an alkylene oxide to bisphenol A, based on the total amount of the polyol (A), and a multilayer sheet using this adhesive. This adhesive can maintain excellent adhesion strength even after washing is repeatedly performed under stringent washing conditions without impairing soft texture of a multilayer sheet.Type: GrantFiled: November 19, 2007Date of Patent: January 5, 2010Assignee: DIC CorporationInventors: Yoshinori Kanagawa, Toshio Niwa, Toshifumi Tamaki
-
Patent number: 7615167Abstract: The invention is a composition comprising a) one or more isocyanate functional polyether based prepolymers containing one or more organic based polymers dispersed therein; b) one or more isocyanate functional polyester based prepolymers which is solid at 23° C.; c) one or more polyisocyanates having a nominal functionality of about 3 or greater; d) one or more conductive carbon blacks in an amount such that the composition has a dielectric constant of about 15 or less; and e) one or more catalysts for the reaction of isocyanate moieties with hydroxyl groups, wherein the composition demonstrates upon cure a modulus of 2.0 MPa or greater at 25° C. measured according to ASTM D4065; a dielectric constant of about 15 or less; a sag of an uncured sample of less than 2 mm, a press flow viscosity of about 20 to about 50 and a storage modulus of about 5.3×105 Pa or greater.Type: GrantFiled: December 20, 2007Date of Patent: November 10, 2009Assignee: Dow Global Technologies, Inc.Inventor: Lirong Zhou
-
Publication number: 20090242123Abstract: The invention provides adhesive and sealant compositions prepared from urethane prepolymers. The urethane prepolymers are obtained by reacting the novel urethane diols, polyester polyols and polyether polyols with an excess of diisocyanate. The urethane diols are prepared by reacting excess low molecular weight diols and diisocyanates. The invention is particularly useful in end use applications such as panel lamination.Type: ApplicationFiled: April 1, 2008Publication date: October 1, 2009Inventors: Yue S. Zhang, Louise A. Moore
-
Publication number: 20090246539Abstract: The invention relates to thermally-hardening silicone coatings on a thermoplastic plastic, characterised in being able to be used as adhesive without an adhesive primer. Such thermally-hardening silicone coatings are produced by a method comprising the following steps: application of a silicone composition to the surface of a thermoplastic plastic, or the surface of a thermoplastic plastic treated with an adhesive primer, at least a partial drying off of the silicone composition to form a silicone film, application of a bonding composition to the silicone film and baking at a temperature of 80° C. to 200° C.Type: ApplicationFiled: September 2, 2005Publication date: October 1, 2009Applicant: SIKA TECHNOLOGY AGInventor: Wolf-Ruediger Huck
-
Publication number: 20090211704Abstract: Mixtures comprising (A) an isocyanurate and/or biuret of 1,6-diisocyanatohexane (HDI), (B) an isocyanurate of 1-isocyanato-3,5,5-trimethyl-5-isocyanatomethylcyclohexane (IPDI), (C) at least one emulsifier, and (D) if desired, solvent.Type: ApplicationFiled: April 28, 2009Publication date: August 27, 2009Applicant: BASF SEInventors: Karl Haberle, Rainer Koniger, Eva Wagner, Klaus Dieter Hoerner
-
Two-Component Polyurethane Compositions That Are Especially Suitable for Use as Structural Adhesives
Publication number: 20090214873Abstract: The invention relates to two-component polyurethane compositions that are especially suitable for use as a structural adhesives. Said compositions are constituted of a polyol component K1 and a polyisocyanate component K2, the polyol component K1 comprising at least one alkoxylated aromatic diol A1 and at least one aliphatic triol A2 and the polyisocyanate component K2 comprising at least one polyisocyanate B1.Type: ApplicationFiled: February 10, 2006Publication date: August 27, 2009Applicant: Sika Technology AGInventor: Martin Demmig -
Publication number: 20090202837Abstract: The present invention relates to one-component moisture-curing compositions comprising at least one isocyanate-containing polyurethane polymer P which has a mean molecular weight of at least 4000 g/mol, and at least one polyaldimine ALD of the formula (I) or (II), where the content of isocyanate groups is at most 3.5% by weight, based on the sum of the isocyanate-containing constituents present in the composition. The compositions are suitable especially as sealants and are notable for good low-temperature performance.Type: ApplicationFiled: March 13, 2007Publication date: August 13, 2009Applicant: Sika Technology AGInventors: Ukiwo Onuoha, Urs Burckhardt
-
Patent number: 7566374Abstract: A method of making a mat with a textile surface and an elastomer backing is provided. The method includes mixing elastomer crumbs and a binder, depositing the crumb/binder mixture in a layer (22), placing a textile surface element (34) on the layer to form a mat assembly, and pressing the mat assembly in a press (9) while setting the binder. The elastomer crumbs are consolidated to form an elastomer backing (2) that includes voids between the elastomer crumbs, and the textile surface element is bonded to the elastomer backing to form the upper textile layer (1) of the mat.Type: GrantFiled: June 12, 2003Date of Patent: July 28, 2009Assignee: Milliken & CompanyInventors: Peter C. Brazier, Thomas A. P. Brock, Robert C. Kerr, Bhawan Patel, Flemming Bojstrup, Patrick Morel
-
Patent number: 7553902Abstract: Mixtures comprising (A) an isocyanurate and/or biuret of 1,6-diisocyanatohexane (HDI), (B) an isocyanurate of 1-isocyanato-3,5,5-trimethyl-5-isocyanatomethylcyclohexane (IPDI), (C) at least one emulsifier, and (D) if desired, solvent.Type: GrantFiled: July 24, 2003Date of Patent: June 30, 2009Assignee: BASF AktiengesellschaftInventors: Karl Haeberle, Rainer Koeniger, Eva Wagner, Klaus Dieter Hoerner
-
Publication number: 20090159205Abstract: Moisture curable reactive hot melt adhesive compositions are prepared using a novel two-step polymerization process. Resulting adhesives have improved green strength.Type: ApplicationFiled: December 21, 2007Publication date: June 25, 2009Applicant: National Starch and Chemical Investment Holding CorporationInventor: Yongxia Wang
-
Patent number: 7550058Abstract: The present invention relates to the technical field of manufacturing engineer wood floor for indoor decoration, and in particular to a manufacturing method that does not release any dissociated formaldehyde. The manufacturing steps are as the followings: Mix the adhesive agent; pour the mixed adhesive agent on a glue spreader at the linear velocity of ?20 meters/minute; deliver the wooden middle boards to the glue spreader to carry out spreading glue; superimpose wooden middle boards having been coated with glue longitudinally and latitudinally, and deliver them to a cold press for cold press; put the rough middle boards having been coldly pressed on a hot press for hot pressing, in order to make them become base material of engineer wood floor; Stick decorative surface material on the base material of engineer wood floor in order to make them become a engineer wood floor; and form, paint, and pack the engineer wood floor finally.Type: GrantFiled: May 2, 2006Date of Patent: June 23, 2009Inventors: Wubing Dai, Weifeng Mao
-
Patent number: 7534375Abstract: The invention is a composition comprising a) one or more isocyanate functional polyether based prepolymers containing one or more organic based polymers dispersed therein; b) one or more isocyanate functional polyester based prepolymers which is solid at 23° C.; c) one or more polyisocyanates having a nominal functionality of about 3 or greater; d) one or more conductive carbon blacks in an amount such that the composition has a dielectric constant of about 15 or less; and e) one or more catalysts for the reaction of isocyanate moieties with hydroxyl groups, wherein the composition demonstrates upon cure a modulus of 2.0 MPa or greater at 25° C. measured according to ASTM D4065; a dielectric constant of about 15 or less; a sag of an uncured sample of less than 2 mm, a press flow viscosity of about 20 to about 50 and a storage modulus of about 5.3×105 Pa or greater.Type: GrantFiled: October 24, 2007Date of Patent: May 19, 2009Assignee: Dow Global Technologies, Inc.Inventor: Lirong Zhou
-
Publication number: 20090092840Abstract: A two-component adhesive or sealant composition consists of a first component (K1) comprising a prepolymer P, which displays an isocyanate group, and an acceleration component (K2). The said acceleration component (K2) displays a catalyst, which catalyzes the reaction of isocyanate groups and which is a lead, zinc, or iron (III) complex, as well as compounds displayed on isocyanate-reactive groups that are at most 1% by weight. In particular, adhesives with a high cure velocity and good adhesion can be obtained and adapted very easily to ambient conditions.Type: ApplicationFiled: May 24, 2007Publication date: April 9, 2009Applicant: SIKA TECHNOLOGY AGInventors: Michael Schlumpf, Martin Konstanzer
-
Publication number: 20090017311Abstract: The invention relates to two-component polyurethane compositions with high early strength, consisting of a first component A that hardens even by itself by reaction with atmospheric moisture, and a second component B that contains water and an acid.Type: ApplicationFiled: May 9, 2007Publication date: January 15, 2009Applicant: Sika Technology AGInventor: Stefan Kislig
-
Publication number: 20080289761Abstract: Polyurethane compositions are disclosed which are particularly suitable as adhesives, show excellent solidity build-up throughout the ?10° C.-35° C. temperature range and are easy to apply. In particular, adhesives showing an excellent crash performance can be formulated within the context of the present invention.Type: ApplicationFiled: May 10, 2005Publication date: November 27, 2008Inventors: Bernhard Bosshard, Michael Schlumpf
-
Publication number: 20080251204Abstract: The invention relates to relates to moisture-hardened hot melt adhesive which contains at least one polyurethane polymer of formula (I) which comprises aldimine groups and which is solid at room temperature, in addition to at least one polyurethane polymer P which comprises isocyanate groups, if q in formula (I) represents zero, or if X in formula (I) represents N—R8 with R8 as a substituent of formula (III). The compositions are characterised in that contain visibly less isocyanate monomers and are therefor particularly advantageous from a work-hygiene point of view.Type: ApplicationFiled: September 29, 2006Publication date: October 16, 2008Applicant: SIKA TECHNOLOGY AGInventors: Urs Burckhardt, Kai Paschkowski, Martin Linnenbrink, Doreen Scheidler
-
Patent number: 7431794Abstract: A process for producing a leather-like sheet, wherein a skin-like layer composed of a resin composition (C) is formed on top of a fibrous substrate (E), comprising; heating and melting a moisture-curable polyurethane hot-melt resin composition (C) which contains a hot-melt urethane prepolymer (A) having isocyanate groups at molecular terminal ends and a colorant (B), and applying said heated and melted resin composition (C) to either [1] a releasable substrate (D) and then bonding the coated surface to a fibrous substrate (E), or [2] a fibrous substrate (E) and then bonding the coated surface to a releasable substrate (D); wherein the colorant (B) contains a polyol with a number average molecular weight within a range from 1,000 to 20,000 as a vehicle (B-1), and a pigment (B-2).Type: GrantFiled: February 23, 2005Date of Patent: October 7, 2008Assignees: Dainippon Ink and Chemicals, Inc., Kuraray Co., Ltd.Inventors: Yoshinori Kanagawa, Toshio Niwa, Toshifumi Tamaki, Hisao Yoneda
-
Patent number: 7419724Abstract: One aspect of the present invention is an adhesive composition formed from two packs. One pack includes an isocyanate-functional prepolymer formed by reacting a polyisocyanate with an alcohol (e.g., polyol). The isocyanate equivalents from the polyisocyanate exceed the hydroxyl equivalents from the alcohol. The second pack is an aqueous polymer emulsion. These two packs are combined to form the novel adhesive composition. Another aspect of the invention is a method for joining together two surfaces of wood products by application of an adhesive thereto. The first step in this method is to mist with water the wood product surfaces to be joined. An adhesive composition then is applied to the misted wood product surfaces. Alternatively, the water misting can be replaced with an aqueous emulsion being part of the adhesive composition. Finally, the adhesive composition is cured.Type: GrantFiled: July 24, 2003Date of Patent: September 2, 2008Assignee: Ashland, Inc.Inventors: Gang-Fung Chen, Gary J. Walworth
-
Patent number: 7416599Abstract: The invention is a composition comprising a) one or more organotitanates having four ligands wherein the ligands are hydrocarbyl, optionally containing one or more functional groups having one or more heteroatoms selected from the group comprising oxygen, nitrogen, phosphorus and sulfur wherein two or more of the ligands may form a cyclic structure; b) one or more mercaptosilanes; c) one or more polyaminosilanes; d) one or more secondary aminosilanes; and e) a solvent which dissolves the components of the composition. This composition is referred to as a clear primer hereinafter. In another embodiment the invention is a system for bonding glass to a substrate which comprises a clear primer according to the invention; and an adhesive comprising an isocyanate functional prepolymer and a catalyst for the cure of the isocyanate functional prepolymer.Type: GrantFiled: December 10, 2004Date of Patent: August 26, 2008Assignee: Dow Global Technologies Inc.Inventors: Harry W. Hsieh, Daniel P. Heberer, Dominic J. Allam, Ziyan Wu
-
Publication number: 20080185098Abstract: The invention is a composition comprising a) one or more isocyanate functional polyether based prepolymers; b) one or more low polar plasticizers; c) one or more high polar plasticizers d) one or more carbon blacks; and e) one or more catalysts for the reaction of isocyanate moieties with hydroxyl groups. In another embodiment the invention is a method of bonding two or more substrates together which comprises contacting the two or more substrates together with a composition according to this invention disposed along at least a portion of the area wherein the substrates are in contact.Type: ApplicationFiled: February 1, 2008Publication date: August 7, 2008Applicant: Dow Global Technologies Inc.Inventors: Ziyan Wu, Lirong Zhou, Daniel P. Heberer
-
Publication number: 20080161441Abstract: Provided by the present invention is a rigid polyurethane/polyisocyanurate foam board product. The board product is comprised of a castor oil based rigid polyurethane/polyisocyanurate foam. Preferably, the board product is based on a polyol mixture of a highly functional castor oil and a polyester and/or polyether polyol.Type: ApplicationFiled: December 27, 2006Publication date: July 3, 2008Inventors: Lance Wang, Julian Eugene Duerr
-
Patent number: 7364796Abstract: Adhesive composition and a flexible packaging composite film that can produce a reduced amount of low-molecular-weight compounds eluted into contents of a composite film to prevent spoilage of inherent properties or performances of the contents, can produce improved oil resistance to prevent significant reduction in strength even when used for oily contents, and can develop favorable flexibility of the composite film to prevent reduction in peel strength. Polyester polyamide polyol and/or polyurethane polyester polyamide polyol including an amide bond produced by reaction between a dimer acid and polyamine is prepared as a polyol component and also concentration of a cyclic compound formed by the amide bond and/or an ester bond in extracted water which is extracted from a composite film adhesively bonded by the adhesive composition by water of 0.5 mL/cm2 per unit area of the composite film is set to be 0.Type: GrantFiled: July 22, 2003Date of Patent: April 29, 2008Assignee: Mitsui Takeda Chemicals, Inc.Inventors: Shigetoshi Sasano, Sachio Igarashi
-
Patent number: 7361292Abstract: The invention is a composition comprising a) one or more isocyanate functional polyether based prepolymers containing one or more organic based polymers dispersed therein; b) one or more isocyanate functional polyester based prepolymers which is solid at 23° C.; c) one or more polyisocyanates having a nominal functionality of about 3 or greater; d) one or more conductive carbon blacks in an amount such that the composition has a dielectric constant of about 15 or less; and e) one or more catalysts for the reaction of isocyanate moieties with hydroxyl groups, wherein the composition demonstrates upon cure a modulus of 2.0 MPa or greater at 25° C. measured according to ASTM D4065; a dielectric constant of about 15 or less; a sag of an uncured sample of less than 2 mm, a press flow viscosity of about 20 to about 50 and a storage modulus of about 5.3×105 Pa or greater.Type: GrantFiled: November 8, 2004Date of Patent: April 22, 2008Assignee: Dow Global Technologies Inc.Inventor: Lirong Zhou
-
Patent number: 7345130Abstract: The invention is an adhesive composition comprising a) one or more silane functional prepolymers comprising a polyether or a polyolefin backbone and silane moieties capable of silanol condensation; b) one or more isocyanate functional prepolymers comprising a polyether backbone and isocyanate moieties; c) one or more organotin compounds or titanate or zirconate compounds having one or more ligands comprising a hydrocarbyl phosphate ester or a hydrocarbyl sulfonate ester, or a mixture thereof; d) a tertiary amine or an anhydrous strong organic acid which is miscible with the polymer and enhances the bonding of the adhesive to a coated unprimed substrate. In one embodiment, the invention is a method of bonding two or more substrates together using the adhesive compositions of this invention. The process comprises applying an adhesive as described herein to one or more of the substrates; contacting the one or more substrates with the adhesive disposed between the substrates; and allowing the adhesive to cure.Type: GrantFiled: October 23, 2006Date of Patent: March 18, 2008Assignee: Dow Global Technologies Inc.Inventors: Huide D. Zhu, Syed Z. Mahdi, Matthew B. Feldpausch
-
Patent number: 7323078Abstract: A method is provided for bonding substrates using a prepolymer composition that is cured with electron beam radiation. The prepolymer composition provided for bonding the substrates contains at least one polyester resin and at least one polymerizable compound.Type: GrantFiled: October 15, 2003Date of Patent: January 29, 2008Assignee: Rohm and Haas CompanyInventors: Peter David Berezuk, Kelly Ann McManigal Gojkovich, Ludwik Stanley Cygan, San Ardi Lee
-
Patent number: 7259207Abstract: A pasty single component polyurethane adhesive is provided. The NCO terminated polyurethane prepolymer is substantially linear, contains from 2.0% to 8.0% based on the weight of the prepolymer, of highly disperse silica and up to 10% by weight, based on the weight of the prepolymer, of additives. The one component adhesive has an Expressed Volume of at least 2,000 g/min measured according to DIN EN 29048 and a Creep Resistance measure according to DIN EN 27390 below 6.0 after 5 minutes.Type: GrantFiled: May 15, 2001Date of Patent: August 21, 2007Assignee: Henkel Kommanditgesellschaft auf AktienInventors: Bernhard Gruenewaelder, Bernhard Schoettmer, Werner Haller, Wolfgang Klauck, Birgit Ness
-
Patent number: 7255897Abstract: The invention relates to the use of aqueous, isocyanate-free, polyurethane dispersions with a solid content of ?30 wt. % and a solvent content of ?10 wt. % in sports floor coverings. The inventive polyurethane dispersions are particularly suitable for use as bonding agents for elastic coatings, spray coatings or flow coatings on elastic or rigid undersurfaces, adhesion promoters or primary coatings, fillers for sealing pores, adhesives for gluing pre-fabricated plastic coatings or for sealing sports floor coverings. The inventive polyurethane dispersions are environmentally friendly and easy to manufacture. They are also partly characterized by improved product features, e.g. mechanical properties, UV resistance and color stability, with respect to the corresponding sports floor coverings.Type: GrantFiled: January 25, 2001Date of Patent: August 14, 2007Assignee: Construction Research & Technology GmbHInventors: Werner Temme, Ralph Bergs, Hans Haberle, Alois Maier
-
Patent number: 7241356Abstract: A composite structure is disclosed. The structure includes one or several polyurethane layers, a support layer, in particular a textile support layer, as well as an optional adhesive layer placed between these layers. The composite structure is characterized in that at least one of the polyurethane layers contains a polyurethane having the formula (I) wherein O—R1—O— is the radical of a polyole with primary and/or secondary hydroxyl functional end groups, R1 and R2 independently represent an organic radical which includes aliphatic, cyclo-aliphatic, aromatic and/or heterocyclic groups, and n is an integer number between 1 and 50,000. Also disclosed is a method of manufacturing the composite structure and its use as imitation leather.Type: GrantFiled: August 27, 2004Date of Patent: July 10, 2007Assignee: Benecke-Kaliko AGInventors: Claus Zürbig, Hans-Hinrich Kruse
-
Patent number: 7235152Abstract: A storage stable adhesive paste composition is described. It contains a plurality of first solid particles comprising a surface protected polyisocyanate and a plurality of second solid particles of polymer having functional groups that react with the polyisocyanate. The particles may be protected by encapsulation in a layer of a material that is not reactive to the polyisocyanate. Preferably, the protective layer also is not reactive to the polymer having functional groups that react with the polyisocyanate. The polyisocyanate particles also can be protected by a layer formed by chemically reacting said polyisocyanate particles with isocyanate reactive compounds to form a protective surface layer around said polyisocyanate particles.Type: GrantFiled: May 13, 2003Date of Patent: June 26, 2007Assignee: Bostik-Findley LimitedInventors: Jeremy Bell, Andrew Crabtree
-
Patent number: 7226523Abstract: A polyurethane adhesive which is useful in bonding porous and non-porous surfaces is provided. The adhesive is especially useful in bonding windshield glass into automotive frames under a variety of environmental conditions, particularly in after market windshield replacement applications. The polyurethane includes at least one urethane prepolymer which is based on at least one thermoplastic polyol. In one embodiment, the urethane prepolymer may be formed from one or more polyisocyanates, one or more polyetherpolyols and one or more thermoplastic polyesterpolyols, wherein the prepolymer has a free isocyanate content of from about 0.6 to about 3.5% by weight, based on the weight of the polyurethane. In another embodiment, a one-part adhesive composition is provided which includes an isocyanate-functional and thermoplastic polyurethane prepolymer having a free isocyanate content of from about 0.6 to about 3.Type: GrantFiled: May 15, 2002Date of Patent: June 5, 2007Assignee: Sika Technology AGInventors: Steven A. Rosenberg, Hong Yao, Thomas Bove, Adrian Van Maurik, Hans Peter Tschan, Norman Blank
-
Patent number: 7220338Abstract: A process for making an article contacted with a bonding agent that is prepared by providing an admixture including a latex and a polyol present in an amount of less than 20 wt. % of the admixture for providing hydroxyl functionality. The isocyanate is admixed with the latex/polyol admixture to form the bonding agent. A layer of the bonding agent is contacted with a substrate.Type: GrantFiled: July 12, 2002Date of Patent: May 22, 2007Assignee: Rohm and Haas CompanyInventors: Mai Chen, Jeffrey Harold Deitch, Christine Margaret Zack
-
Patent number: 7195692Abstract: The invention relates to a moisture-crosslinkable polyurethane adhesive which comprises: a) 70 to 95% by weight of a polyurethane prepolymer obtained by polyaddition of polyols to diisocyanates trimerized as isocyanurates and, b) 5 to 30% by weight of an essentially amorphous poly-a-olefin, the content of free NCO groups representing 1 to 20% by weight of the adhesive. The adhesive according to the invention is used for the adhesive bonding of fixing components of the Velcro type to articles intended for hygiene.Type: GrantFiled: March 24, 2003Date of Patent: March 27, 2007Assignee: Bostik FindleyInventors: Michel Miskovic, François Bauduin, Patrick Bouttefort, Jean-François Chartrel
-
Patent number: 7166182Abstract: The invention is directed to methods and compositions for improving the adhesion properties and switching performance of an electrophoretic display. The methods and compositions comprise the use of a high dielectric polymer or oligomer and optionally a crosslinking agent.Type: GrantFiled: February 26, 2004Date of Patent: January 23, 2007Assignee: SiPix Imaging, Inc.Inventors: Cheri Pereira, Jack Hou, Rong-Chang Liang
-
Patent number: 7160976Abstract: Pressure-sensitive adhesive based on polyurethane, characterized in that the polyurethane is composed of the following starting materials which are reacted with one another in the stated proportions: a) at least one aliphatic or alicyclic diisocyanate having in each case an asymmetrical molecular structure, b) a combination of at least one polypropylene glycol diol and at least one polypropylene glycol triol, the ratio of the number of hydroxyl groups in the diol component to the number of hydroxyl groups in the triol component being between 0.7 and 9.0, preferably between 1.5 and 2.5, additionally the ratio of the number of isocyanate groups to the total number of hydroxyl groups being between 0.9 and 1.1, preferably between 0.95 and 1.Type: GrantFiled: April 1, 2004Date of Patent: January 9, 2007Assignee: tesa AktiengesellschaftInventors: Bernd Lühmann, Philippe Hesse, Sianty Sunarto, Uwe Schümann, Kirstin Weiland, Carsten Böhmer
-
Patent number: 7138466Abstract: High green strength reactive hot melt adhesives are prepared using relatively low levels of reactive acrylic, and may be prepared with one or more difunctionals having cyclic or polycyclic structures.Type: GrantFiled: April 6, 2004Date of Patent: November 21, 2006Assignee: National Starch and Chemical Investment Holding CorporationInventors: Ju-Ming Hung, Yue S. Zhang, Yimin Zhang, Zhixin Li
-
Patent number: 7091300Abstract: Polyurethane-based pressure-sensitive adhesive which attaches strongly to polar plastic surfaces, smooth metal surfaces and glass, but which has weak, if any, adhesion to paper, paperboard or skin and is easily detachable without damaging surfaces during its removal, and is reusable. The adhesive comprises a polyurethane formed by reacting an aliphatic or alicyclic polyisocyanate having a functionality of equal to or less than three with a combination of diol and triol.Type: GrantFiled: April 1, 2004Date of Patent: August 15, 2006Assignee: tesa AktiengesellschaftInventors: Bernd Lühmann, Philippe Hesse, Sianty Sunarto, Uwe Schümann, Kirstin Weiland, Carsten Böhmer
-
Patent number: 7074297Abstract: A method for forming an isocyanate-functional moisture reactive hot melt adhesive by first forming a hydroxyl-functional prepolymer from a polyol selected from the group including polyester polyols, polyether polyols, and mixtures thereof and a polyisocyanate and subsequently forming the moisture reactive hot melt adhesive from the hydroxyl-functional prepolymer, a polyol selected from the group including polyester polyols, polyether polyols, and a polyisocyanate is provided. An isocyanate-functional moisture reactive hot melt adhesive formed by the method of the present invention and a method for bonding substrates are also provided.Type: GrantFiled: August 9, 2001Date of Patent: July 11, 2006Assignee: Rohm and Haas CompanyInventor: Pankaj Vinubhai Shah
-
Patent number: 7071248Abstract: Adhesive additives that are used in conjunction with polyisocyanate resins to form adhesive compositions. The adhesive additives contain castor oil, a mixture of castor oil and triglycerides, or a reaction product from the transesterification of one or more polyols and one or more triglycerides. The adhesive compositions are well suited for use as a binder in the manufacture of various composite products, particularly composite wood products including OSB construction panels and laminate composites.Type: GrantFiled: January 21, 2003Date of Patent: July 4, 2006Assignee: Ashland Licensing and Intellectual Property, LLCInventors: Gang-Fung Chen, Stephen Hupp, Philip L. Schell
-
Patent number: 7056415Abstract: The present invention relates to a process for bonding two or more wood substrates by using as the adhesive isocyanate-terminated prepolymers having an isocyanate content of 8 to 20 wt. % and containing the reaction product of a) at least one organic polyisocyanate with b) at least one organic polyhydroxyl compound containing the reaction products of i) organic polyisocyanates with ii) polyamines, hydrazines and/or hydrazides having primary and/or secondary amino groups dispersed in a iii) polyethers having at least two hydroxyl groups and a number average molecular weight of 500 to 12,000; and, the present invention also relates to the bonded substrates obtained by this process.Type: GrantFiled: December 11, 2001Date of Patent: June 6, 2006Assignee: Bayer AktiengesellschaftInventor: Walter Meckel
-
Patent number: 7037402Abstract: High green strength reactive hot melt adhesives are prepared using relatively low levels of reactive acrylic, and may be prepared with liquid crystalline or crystalline diols.Type: GrantFiled: October 15, 2002Date of Patent: May 2, 2006Assignee: National Starch & Chemical Investment Holding CorporationInventors: Ju-Ming Hung, Yue S. Zhang, Wayne K. Chu
-
Patent number: 7025853Abstract: A moisture-reactive hot-melt composition, useful as an adhesive, is provided that has improved balance of open time and green strength. In particular, the composition is made from a polyol, a polyisocyante, and an acrylic polymer. Also provided are a method for making such compositions and a method for using such compositions for bonding substrates.Type: GrantFiled: June 12, 2003Date of Patent: April 11, 2006Assignee: Rohm and Haas CompanyInventor: Mark Alan Kesselmayer
-
Patent number: 6998011Abstract: In the preparation of an improved adhesive composition, an epoxy-based prepolymer is obtained by the reaction of one or more epoxy resins with amino-terminated polyethers and/or carboxyl-terminated butadiene-nitrile rubbers. In one embodiment of the invention, both a solid epoxy resin and a liquid epoxy resin, each of which is a diglycidyl ether of a polyphenol such as bisphenol A, are used. The epoxy-based prepolymer is mixed with an acrylate-terminated urethane resin (preferably, one based on a polyol having a number average molecular weight of at least about 400) and a heat-activated latent curing agent to make an adhesive composition which can be pumpable at room temperature. Curable adhesives capable of expansion to about 100% with high impact resistance after curing may be obtained by inclusion of expanding agents such as expandable microspheres.Type: GrantFiled: March 13, 2003Date of Patent: February 14, 2006Assignee: Henkel Kommanditgesellschaft auf AktienInventors: Rainer Schoenfeld, James F. Hubert, Murteza Erman
-
Patent number: 6994909Abstract: The invention relates to a laminating adhesive including a reaction product of at least one polymeric polyol (part A) and at least one NCO terminated polyurethane prepolymer (part B). The part A includes a reaction product of at least one alkylene diol; at least one dial containing a pendant aliphatic chain; and at least one dicarboxylic acid. The part B includes a reaction product of at least one polyether polyol; and at least one polyisocyanate. The adhesive exhibits an initial viscosity of less than about 25,000 mPa.s at about 25° C.Type: GrantFiled: June 20, 2003Date of Patent: February 7, 2006Assignee: H.B. Fuller Licensing & Financing Inc.Inventor: Brian S. Glasbrenner