Cellulose Or Derivative, E.g., Cotton, Paper Pulp, Etc. Patents (Class 524/733)
  • Patent number: 10559505
    Abstract: Provided is a sheet (2) for forming protective film, including: a protective film-forming film (1) characterized in that the light transmittance thereof at a wavelength of 1600 nm of 72% or more, and the light transmittance thereof at a wavelength of 550 nm of 20% or less; and a release sheet (21) laminated upon one or both faces of the protective film-forming film (1). According to this sheet (2) for forming a protective film, it is possible to form a protective film that allows for the inspection of cracks, etc., on a workpiece or a product obtained by processing the workpiece, while preventing grinding marks on the workpiece or the product from being visible to the naked eye.
    Type: Grant
    Filed: January 21, 2015
    Date of Patent: February 11, 2020
    Assignee: Lintec Corporation
    Inventors: Daisuke Yamamoto, Hiroyuki Yoneyama
  • Patent number: 10504864
    Abstract: There are provided are an adhesive composition that keeps storage stability and further gives a cured product wherein metallic bonds are formed in the state that the cured product wets its components and is satisfactorily spread between the components (or parts), thereby turning excellent in adhesive property, electroconductivity, and reliability for mounting such as TCT resistance or high-temperature standing resistance; an electronic-component-mounted substrate using the same; and a semiconductor device. The adhesive composition comprises electroconductive particles (A) and a binder component (B), wherein the electroconductive particles (A) include a metal (a1) having a melting point equal to or higher than the reflow temperature and containing no lead, and a metal (a2) having a melting point lower than the reflow temperature and containing no lead, and the binder component (B) includes a thermosetting resin composition (b1) and an aliphatic dihydroxycarboxylic acid (b2).
    Type: Grant
    Filed: December 9, 2015
    Date of Patent: December 10, 2019
    Assignee: HITACHI CHEMICAL COMPANY, LTD.
    Inventors: Kaoru Konno, Hiroki Hayashi, Takashi Kawamori
  • Patent number: 9591870
    Abstract: Cellulose ethers are described herein which are useful in food compositions. In these cellulose ethers the ether substituents are methyl groups, hydroxyalkyl groups, and optionally alkyl groups being different from methyl, the cellulose ether has a DS(methyl) of from 1.65 to 2.20, an MS(hydroxyalkyl) of from 0.10 to 1.00, and hydroxy groups of anhydroglucose units are substituted with methyl groups such that [s23/s26?0.2*MS(hydroxyalkyl)] is 0.35 or less, wherein s23 is the molar fraction of anhydroglucose units wherein only the two hydroxy groups in the 2- and 3-positions of the anhydroglucose unit are substituted with methyl groups and wherein s26 is the molar fraction of anhydroglucose units wherein only the two hydroxy groups in the 2- and 6-positions of the anhydroglucose unit are substituted with methyl groups.
    Type: Grant
    Filed: June 6, 2012
    Date of Patent: March 14, 2017
    Inventors: Britta Huebner-Keese, Carol E. Mohler, Meinolf Brackhagen, Roland Adden, Robert L. Sammler, Jonathan D. Moore, Matthias Knarr
  • Patent number: 9540484
    Abstract: Coating compositions can be prepared from a polyether resin, wherein the smallest difunctional hydroxyl phenyl segment used to form the polyether resin has a molecular weight greater than about 500, and wherein the smallest difunctional hydroxyl phenyl segment used to form the polyether resin does not comprise two or more non-impaired hydroxyl groups attached to two or more different five-membered or six-membered carbon atom rings in a segment having a molecular weight less than about 500. The polyether resin can be prepared by reacting a dihydroxyl compound and/or a diamine compound with a phenol stearic acid compound to produce a diphenol, and reacting the diphenol with a diglycidyl ether compound to form the polyether resin.
    Type: Grant
    Filed: March 14, 2014
    Date of Patent: January 10, 2017
    Assignees: AKZO NOBEL COATINGS INTERNATIONAL B.V., SI GROUP, INC.
    Inventors: Gary Pierce Craun, Daniel Bode, Timothy Edward Banach, Gary Joseph Robideau, Leigh Scott Howard
  • Patent number: 9458355
    Abstract: A polyimide resin produced by heating a polyamic acid resulting from the reaction of a tetracarboxylic acid dianhydride component and a diamine component in N,N,N?,N?-tetramethylurea.
    Type: Grant
    Filed: August 20, 2013
    Date of Patent: October 4, 2016
    Assignee: Tokyo Ohka Kogyo Co., Ltd.
    Inventors: Kunihiro Noda, Hiroki Chisaka, Dai Shiota, Kazuya Someya
  • Publication number: 20150056879
    Abstract: A composite material comprises a reinforcing material carried in a polymer matrix material which is the polymerization product of a polymerizable composition comprising a di-activated vinyl compound, with the proviso that the di-activated vinyl compound is not a cyanoacrylate. The reinforcing materials may be a wide variety of substrates including thermally sensitive materials. Exemplary composites can be molded and cured at ambient temperatures. Also disclosed are laminate materials having layered materials adhered by curing a di-activated vinyl polymerizable composition.
    Type: Application
    Filed: March 29, 2013
    Publication date: February 26, 2015
    Inventors: Bernard M. Malofsky, Adam G. Malofsky, Matthew M. Ellison
  • Publication number: 20150010949
    Abstract: The present invention relates to an aqueous carbohydrate based binder composition, comprising a carbohydrate component and an amine component, wherein the carbohydrate component comprises one or more pentose sugars, as well as to a method of its production.
    Type: Application
    Filed: September 2, 2012
    Publication date: January 8, 2015
    Applicant: Knauf Insulation
    Inventors: Roger Jackson, Carl Hampson, James Robinson, Benedicte Pacorel
  • Patent number: 8865287
    Abstract: A hybrid polymer composition and a method for forming it is provided, comprising a first part A comprising a polyurethane catalyst and an aldehyde resin pre-polymer and a second part B comprising a polyisocyanate pre-polymer and an aldehyde resin cure accelerator. Methods are also provided for forming a composite with a two part hybrid polymer composition and a fibrous web material.
    Type: Grant
    Filed: August 12, 2009
    Date of Patent: October 21, 2014
    Inventor: Robert A. Haupt
  • Publication number: 20130202891
    Abstract: Embodiments of the invention provide for polyurethane binders or adhesives that result in an increased amount of renewable resources in the final composite products while yet maintaining the quality of the composite products.
    Type: Application
    Filed: March 10, 2011
    Publication date: August 8, 2013
    Applicant: DOW GLOBAL TECHNOLOGIES LLC
    Inventors: Verena M.T. Thiede, Klaus Haase, Gerhard Mueller, Giuseppe Vairo, Christoph Juris, Joerg Arntzen
  • Publication number: 20130153830
    Abstract: Porous materials are fabricated using interpenetrating inorganic-organic composite gels. A mixture or precursor solution including an inorganic gel precursor, an organic polymer gel precursor, and a solvent is treated to form an inorganic wet gel including the organic polymer gel precursor and the solvent. The inorganic wet gel is then treated to form a composite wet gel including an organic polymer network in the body of the inorganic wet gel, producing an interpenetrating inorganic-organic composite gel. The composite wet gel is dried to form a composite material including the organic polymer network and an inorganic network component. The composite material can be treated further to form a porous composite material, a porous polymer or polymer composite, a porous metal oxide, and other porous materials.
    Type: Application
    Filed: August 3, 2011
    Publication date: June 20, 2013
    Inventors: Dong-Kyun Seo, Alex Volosin
  • Publication number: 20130035418
    Abstract: A process for the preparation of monodisperse polymer particles which are formed by contacting monomers with aqueous dispersions comprising monodisperse swellable seed polymers/oligomers, and initiating polymerization in the presence of a steric stabilizer. The resulting swollen seed particles are characterized by the particle mode diameter.
    Type: Application
    Filed: October 10, 2012
    Publication date: February 7, 2013
    Applicant: LIFE TECHNOLOGIES AS
    Inventor: Life Technologies AS
  • Publication number: 20130011385
    Abstract: A transparent polymeric nanocomposite hydrogel is provided, wherein the polymeric nanocomposite hydrogel is made from a water insoluble polymer, i.e. poly(2-hydroxyethyl methacrylate) (PHEMA) or/and crosslinked PHEMA and a water insoluble nanofiber, i.e., bacterial cellulose (BC). Disclosed is a synthetic route for polymeric nanocomposites hydrogels. The preferred polymeric nanocompositions are produced through free radical polymerization of HEMA monomer in the presence of bacterial cellulose with an assistance of ultrasound to enhance the mixing of bacterial cellulose, initiator, and the monomers. The polymeric nanocomposite hydrogel is then formed by immersion of the dry polymeric nanocomposite in water. Disclosed is a high transmittance polymer nanocomposite hydrogel with a preferred BC loading less than 0.1%, water content of about 40% in weight, good mechanical integrity and strength.
    Type: Application
    Filed: December 23, 2010
    Publication date: January 10, 2013
    Applicant: AXCELON BIOPOLYMERS COPRORATION
    Inventors: Xinsheng Li, Wankei Wan, Chandrakant J. Panchal
  • Patent number: 8309647
    Abstract: Spherical particles having a mean diameter in the range from 1 to 20 ?m, comprising (a) from 85 to 99% by weight of a crosslinked random copolymer having a glass transition temperature Tg in the range from ?75 to ?40° C. (b) and from 1 to 15% by weight of at least one organic substance selected from waxes, protective colloids and plasticizers.
    Type: Grant
    Filed: December 13, 2007
    Date of Patent: November 13, 2012
    Assignee: BASF SE
    Inventors: Cedric du Fresne von Hohenesche, Stefan Adams, Klaus Dieter Hörner, Dominik Winter
  • Publication number: 20120083547
    Abstract: The present disclosure relates to a nail coating system comprising a basecoat, a color layer, and a topcoat. The system of the present disclosure may be applied to natural and/or pre-existing artificial nail coatings. The present disclosure relates generally to compositions for natural and artificial nail coatings, and particularly, but not by way of limitation, to polymerizable compositions and color layers polymerized therefrom. The disclosure further relates to methods of making a polymerized color layer.
    Type: Application
    Filed: November 23, 2011
    Publication date: April 5, 2012
    Applicant: Creative Nail Disign, Inc.
    Inventors: Thong H. VU, Diane Marie Larsen, Chad Conger
  • Publication number: 20110151180
    Abstract: A hybrid polymer composition and a method for forming it is provided, comprising a first part A comprising a polyurethane catalyst and an aldehyde resin pre-polymer and a second part B comprising a polyisocyanate pre-polymer and an aldehyde resin cure accelerator. Methods are also provided for forming a composite with a two part hybrid polymer composition and a fibrous web material.
    Type: Application
    Filed: August 12, 2009
    Publication date: June 23, 2011
    Inventor: Robert A. Haupt
  • Patent number: 7897681
    Abstract: Compositions including composites of polyvinyl chloride (PVC) and nanoparticles are disclosed. A wood-polymer composite using the PVC-nanoparticle composite as a matrix also is disclosed. The nanoparticle filler is dispersed throughout the PVC matrix by blending the nanoparticles with a mixture of PVC particles that have been pre-heated to a temperature at or above a fusion point of the PVC, thereby fusing the PVC particles prior to the addition of the nanoparticles to the matrix. Also disclosed are methods of forming the composite compositions. The composite compositions can be used to replace wood boards.
    Type: Grant
    Filed: April 17, 2008
    Date of Patent: March 1, 2011
    Assignee: Board of Trustees of Michigan State University
    Inventor: Laurent M. Matuana
  • Patent number: 7696261
    Abstract: The present invention relates to a friction material having a fibrous base material as a primary layer and a secondary layer comprising a mixture of carbonaceous material and friction modifying particles on at least one surface of the primary layer for use as an anti-shudder friction material.
    Type: Grant
    Filed: October 3, 2003
    Date of Patent: April 13, 2010
    Assignee: BorgWarner Inc.
    Inventor: Robert C. Lam
  • Patent number: 7514493
    Abstract: A method for containing at least a portion of radioisotopes, radionuclides, heavy metal or combination thereof contaminating a substrate wherein a containment composition is applied to the substrate. The ingredients within the containment composition interact with the contaminants on the surface of the substrate until the containment composition has polymerized to a water insoluble form containing at least a portion of the contaminates enmeshed therein. The dried composition is removed from the contaminated surface removing with the composition at least a portion of the contaminate.
    Type: Grant
    Filed: October 27, 2004
    Date of Patent: April 7, 2009
    Assignee: Sandia Corporation
    Inventors: Robert C. Moore, Mark D. Tucker, Joseph A. Jones
  • Patent number: 7399798
    Abstract: A process is provided for producing lignocellulosic board panels. The process comprises providing lignocellulosic material and an adhesive system. The adhesive system comprises (a) a base adhesive resin and (b) an extender and/or filler material comprising sugar beet material. The adhesive system (i) retains substantial moisture in the lignocellulosic material, and/or (ii) creates a relatively higher initial viscosity, and/or (iii) maintains a substantially stable viscosity thereof over time. The lignocellulosic material is combined with adhesive system. The combined lignocellulosic material and adhesive is then formed into the lignocellulosic board panels.
    Type: Grant
    Filed: December 3, 2004
    Date of Patent: July 15, 2008
    Assignee: Willamette Valley Company
    Inventors: Tim C. Ayers, Philip N. Cote, Wally K. Rowland, Robert Joe Rubash
  • Patent number: 6974608
    Abstract: Disclosed is a cellulose ester film comprising a polymer prepared by polymerizing at least one ethylenically unsaturated monomer selected from vinyl esters, vinyl esters having a functional group, acrylic esters, and acrylic esters having a functional group, wherein the polymer has a weight average molecular weight of not more than 5,000.
    Type: Grant
    Filed: July 10, 2001
    Date of Patent: December 13, 2005
    Assignee: Konica Corporation
    Inventors: Kunio Shimizu, Toru Kobayashi
  • Patent number: 6822135
    Abstract: A fluid storage material including particles, such as superabsorbent particles and/or microencapsulated fragrance agents, cleansing agents, or skin rejuvenation agents, secured to one another and/or secured to a substrate. The fluid storage material can be made by dispersing particles in a crosslinkable binder solution, applying the combined particles and binder solution to a surface such as a substrate or a release surface, inducing crosslinking of the binder, and removing the solvent from the surface such as, for example, by drying the solvent. The fluid storage material is particularly suitable for use in personal care products.
    Type: Grant
    Filed: July 26, 2002
    Date of Patent: November 23, 2004
    Assignee: Kimberly-Clark Worldwide, Inc.
    Inventors: Dave Allen Soerens, Lawrence Howell Sawyer, Kambiz Bayat Makoui, Jian Qin, Jason Matthew Laumer
  • Patent number: 6673854
    Abstract: The present invention is directed to a vinyl acetate-ethylene polymer dispersion containing a vinyl acetate-ethylene polymer, a phosphate-functional surfactant, and a protective colloid. The invention is also directed to an aqueous coating composition having at least 65 percent by volume of pigment, on a dry solids volume basis and an amount effective to produce good scrub resistance of up to 25 percent by weight of the vinyl acetate-ethylene binder.
    Type: Grant
    Filed: October 5, 2001
    Date of Patent: January 6, 2004
    Assignee: National Starch and Chemical Investment Holding Corporation
    Inventors: Dorian Pierre, Stephen John Baines, Keith Charles Allen
  • Publication number: 20030125458
    Abstract: The invention is a process for producing a particulate cellulose containing composite and the product of the process. The composite is formed by mixing a cellulose containing material with a polyol and water to form a first mixture. The first mixture is mixed with an equivalent excess of a polyisocyanate to form a second mixture which is reacted under pressure of 1 Kg/cm2 to 100 Kg/cm2 at a temperature of 10° C. to 30° C. for from 5 minutes to 30 minutes to form the composite.
    Type: Application
    Filed: January 16, 2003
    Publication date: July 3, 2003
    Inventors: Lothar Thiele, Hans-Peter Kohlstadt, Hans Reinhard Striewski
  • Patent number: 6552120
    Abstract: The invention relates to the utilization of aqueous polymer dispersions or of polymer powders which can be redispersed in water and which are based on protective colloid-stabilized aromatic vinyl-1,3-diene-copolymers in adhesive formulations used in the building industry, whereby the polymer dispersion and the polymer powders are produced by emulsion polymerization of a mixture containing at least one aromatic vinyl and at least one 1,3-diene in the presence of one or more protective colloids, without using an emulsifier, and by optionally drying of the aqueous polymer dispersion obtained thereby.
    Type: Grant
    Filed: May 11, 2001
    Date of Patent: April 22, 2003
    Assignee: Wacker-Chemie GmbH
    Inventors: Reinhard Härzschel, Theo Mayer, Hans-Peter Weitzel
  • Patent number: 6528590
    Abstract: The present invention relates to an aqueous copolymer dispersion consisting essentially of A) an aqueous dispersion of a copolymer having a solids content of from 20 to 65% by weight, said copolymer being composed of various monomers and the weight fractions of the various monomers being chosen within the stated limits such that a synthetic resin composed of these monomers alone would have a glass transition temperature in the range from −50 to 35° C., B) from 0 to 10% by weight, based on the copolymer A, of benzophenone, acetophenone, one or more acetophenone derivatives or benzophenone derivatives without an ethylenically unsaturated group, or a mixture thereof, C) from 0.3 to 10% by weight, based on the copolymer A, of emulsifiers, and D) from 0 to 5% by weight, based on the copolymer A, of protective colloids; to a process for its preparation and to its use.
    Type: Grant
    Filed: October 5, 2001
    Date of Patent: March 4, 2003
    Assignee: Clariant GmbH
    Inventors: Dierk Beyer, Volker Renisch, Rolf Kuropka, Susana Maria De Almeida Carvalho
  • Patent number: 6127439
    Abstract: The present invention provides a process for preparing an expandable polymer of a vinyl aromatic monomer and a polar water adsorbing monomer. The monomers are partially polymerized and then suspended in water so that the resulting beads contain from 3 to 40 weight % water which act as the sole or a predominant blowing agent.
    Type: Grant
    Filed: December 30, 1998
    Date of Patent: October 3, 2000
    Assignee: NOVA Chemicals (International) S.A.
    Inventors: Hugo Angela Albert Berghmans, Igor Chorvath, Peter Kelemen, Eric Wilhelmus Johannes Frederik Neijman, Johannes Maria Zijderveld
  • Patent number: 6111011
    Abstract: Water-soluble, nonionic cellulose ethers selected from the group consisting of alkylcelluloses and hydroxyalkylcelluloses which are additionally substituted by butenyl groups are used as protective colloids in the preparation of aqueous polymer dispersions.
    Type: Grant
    Filed: November 19, 1998
    Date of Patent: August 29, 2000
    Assignee: Clariant GmbH
    Inventors: Reinhard Doenges, Rudolf Ehrler, Horst Wurm
  • Patent number: 6100328
    Abstract: Disclosed herein is a method for the production of reinforced thermoplastic and thermoadhesive polymers, used to make shaped reinforcing pieces for footwear in general, including sports shoes, these reinforced condensation polymers resulting from the polymerization of monomers such as lactones--specifically epsilon caprolactone, and condensable systems of two components, specifically polyisocyanates, polyols or polyolpolyesters--in the presence of reinforcing materials and, optionally, filling materials. The reinforced thermoplastic and thermoadhesive polymers are obtained in the form of sheets, from which the units or pieces are cut to a specified pattern, for example for the toecap, the heel piece or the inner sole.
    Type: Grant
    Filed: September 13, 1996
    Date of Patent: August 8, 2000
    Assignee: Fapiquim S.A.
    Inventors: Jorge Alejandro Lopez Poy, Daniel Angel Zoia
  • Patent number: 6060558
    Abstract: Suspension polymers having high swellability have low contents of soluble fractions if aliphatic peroxy esters are used as polymerization initiators.
    Type: Grant
    Filed: May 14, 1999
    Date of Patent: May 9, 2000
    Assignee: Bayer Aktiengesellschaft
    Inventors: Wolfgang Podszun, Olaf Halle, Werner Struver, Robert Bloodworth, Holger Lutjens
  • Patent number: 6051636
    Abstract: A capillary electrophoresis system and method of electrokinetically loading a capillary electrophoresis sample into a separation medium in a capillary tube in which an entangled polymer matrix is formed having the sample embedded therein. The matrix has a mesh size effective to retard movement of macromolecules such as DNA sequencing templates through the matrix when an electric field is applied across the matrix. The entangled polymer matrix is formed by a linear polymer having a molecular weight of at least 20K Daltons. Furthermore, the invention includes stable denaturants useful for the electrophoresis of nucleic acids.
    Type: Grant
    Filed: March 9, 1999
    Date of Patent: April 18, 2000
    Assignee: The Perkin-Elmer Corporation
    Inventors: Ben F. Johnson, Steven M. Menchen, Will Bloch
  • Patent number: 6046259
    Abstract: A stable aqueous dispersion containing cellulose ester, the dispersion being polymeric microparticles comprised of cellulose ester and a polymer formed from at least two different vinyl monomers of which at least one vinyl monomer is polyethylenically unsaturated. The dispersion of microparticles is formed by a high stress technique prior to polymerization of the vinyl monomers in the presence of the cellulose ester. Typically the dispersion also contains surfactant. A method of making the stable, cellulose ester-containing aqueous dispersion by (a) mixing together a cellulose ester, at least two vinyl monomers of which at least one vinyl monomer is polyethylenically unsaturated, surfactant, and water to form an emulsion; (b) particulating the emulsified mixture of (a) into microparticles by a high stress technique; and (c) copolymerizing the vinyl monomers in the cellulose ester-containing particulated emulsion of (b) to form a crosslinked polymer within the microparticles of the dispersion.
    Type: Grant
    Filed: June 27, 1996
    Date of Patent: April 4, 2000
    Assignee: PPG Industries Ohio, Inc.
    Inventors: Suryya K. Das, Soner Kilic, Robyn E. McMillan
  • Patent number: 6020422
    Abstract: Water soluable, aqueous salt solution dispersible polymers and aqueous salt solutions containing dispersed polymers are produced by polymerization of ethylenically unsaturated soluble monomers in an aqueous salt solution in the presence of at least one carbohydrate. The polymers and aqueous salt solutions containing the dispersed polymers are useful for paper making, water clarification and emulsion breaking.
    Type: Grant
    Filed: November 15, 1996
    Date of Patent: February 1, 2000
    Assignee: BetzDearborn Inc.
    Inventors: Edward J. Connors, Michelle L. Cotter, Fu Chen
  • Patent number: 5929143
    Abstract: The present invention provides novel vinyl containing organopolysiloxane elastomers which possess excellent low compression set and heat aging characteristics and which can advantageously be formulated into liquid silicone elastomer moldable compositions.
    Type: Grant
    Filed: October 16, 1997
    Date of Patent: July 27, 1999
    Assignee: General Electric Company
    Inventors: Brian John Ward, Edward Matthew Jeram, Richard Albert Striker
  • Patent number: 5928709
    Abstract: Low molecular weight cellulose ethers which are suitable as a coating material for solid metered units and as an additive in ceramic compositions or cosmetics formulations or as a polymerization auxiliary are obtained by irradiation of a mixture of a higher molecular weight cellulose ether and a base with electrons.
    Type: Grant
    Filed: November 14, 1997
    Date of Patent: July 27, 1999
    Assignee: Clariant GmbH
    Inventors: Reinhard Doenges, Diethart Reichel
  • Patent number: 5883184
    Abstract: A curable organopolysiloxane composition is disclosed, comprising (A) 100 parts by weight of an organopolysiloxane having at least two monovalent aliphatic unsaturated hydrocarbon groups bonded to the silicon atoms per molecule, (B) an organopolyhydrogensiloxane having at least three hydrogen atoms bonded to the silicon atoms per molecule in such an amount that the number of the hydrogen atoms bonded to the silicon atoms falls within a range of from 0.25 to 8 per monovalent aliphatic unsaturated hydrocarbon group in component (A), (C) a catalyst selected from the group consisting of platinum and platinum compounds in an amount of from 0.
    Type: Grant
    Filed: May 21, 1996
    Date of Patent: March 16, 1999
    Assignee: Toshiba Silicone Co., Ltd.
    Inventor: Hisayuki Nagaoka
  • Patent number: 5858746
    Abstract: Water soluble macromers are modified by addition of free radical polymerizable groups, such as those containing a carbon-carbon double or triple bond, which can be polymerized under mild conditions to encapsulate tissues, cells, or biologically active materials. The polymeric materials are particularly useful as tissue adhesives, coatings for tissue lumens including blood vessels, coatings for cells such as islets of Langerhans, coatings, plugs, supports or substrates for contact with biological materials such as the body, and as drug delivery devices for biologically active molecules.
    Type: Grant
    Filed: January 25, 1995
    Date of Patent: January 12, 1999
    Assignee: Board of Regents, The University of Texas System
    Inventors: Jeffrey A. Hubbell, Chandrashekhar P. Pathak, Amarpreet S. Sawhney, Neil P. Desai, Jennifer L. Hill, Syed F. A. Hossainy
  • Patent number: 5834538
    Abstract: A pressure sensitive adhesive(PSA) composition includes a latex system of an aqueous polymer dispersion derived from ethylenically-unsaturated monomers in the presence of a water soluble protective colloid. The PSA compositions are used in the manufacture of a variety of articles that are intended to be easily attachable to another substrate by the application of pressure alone.
    Type: Grant
    Filed: June 18, 1996
    Date of Patent: November 10, 1998
    Assignee: Hercules Incorporated
    Inventors: Jacobus G. deHullu, Dirk Kruythoff, Willemien G. Salomons, Adriana Veldhorst
  • Patent number: 5795928
    Abstract: A process is provided for preparing an acrylic copolymer latex having improved mechanical and shear stability comprising emulsion polymerizing at least one ethylenically unsaturated monomer having up to 23 carbons in the presence of, by weight based on the total monomer content, a) from about 0.05% to about 5.0% of a protective colloid with a molecular weight of less than 75,000, and b) from about 0.01% to about 1.5% of at least one water soluble free radical polymerization initiator. This latex provides coating manufacturers the flexibility of either eliminating surfactants altogether from coating or to use small amounts thereof.
    Type: Grant
    Filed: November 3, 1995
    Date of Patent: August 18, 1998
    Assignee: Hercules Incorporated
    Inventors: Bernardus J. W. Janssen, Gijsbert Kroon, Dirk Kruythoff, Willemina G. Salomons
  • Patent number: 5760097
    Abstract: The present invention relates to porous crosslinked polymeric microbeads having cavities joined by interconnecting pores wherein at least some of the cavities at the interior of each microbead communicate with the surface of the microbead. The present invention also relates to a process for producing a porous, crosslinked polymeric microbead as well as the product of this process. This process involves combining an oil phase with an aqueous discontinuous phase to form an emulsion, adding the emulsion to an aqueous suspension medium to form an oil-in-water suspension of dispersed emulsion droplets, and polymerizing the emulsion droplets to form microbeads. At least 10% of the microbeads produced in accordance with the present invention are substantially spherical or substantially ellipsoidal or a combination of the two.
    Type: Grant
    Filed: April 10, 1996
    Date of Patent: June 2, 1998
    Assignee: Biopore Corporation
    Inventors: Nai-Hong Li, James R. Benson, Naotaka Kitagawa
  • Patent number: 5750617
    Abstract: Biologically degradable aqueous dispersions of vinyl ester polymers are provided which have a solids content of 20 to 70% by weight, based on the total weight of the dispersions, and have been prepared by free radical polymerization by the emulsion polymerization process, wherein, in the presence of10 to 50% by weight, based on the monomer phase, of biologically degradable plasticizer and 0.5 to 15.0% by weight, based on the monomer phase, of biologically degradable emulsifier and/or biologically degradable protective colloid,a monomer phase comprisinga) 50 to 100 parts by weight of one or more vinyl esters from the group comprising vinyl esters of unbranched or branched alkylcarboxylic acids having 1 to 15 C atoms,b) 0 to 30 parts by weight of ethylene and/or an ester of (meth)acrylic acid or ethylenically unsaturated dicarboxylic acids from alcohols having 1 to 10 atoms andc) 0 to 20 parts by weight of other mono- or poly-ethylenically unsaturated compounds, is polymerized.
    Type: Grant
    Filed: August 5, 1996
    Date of Patent: May 12, 1998
    Assignee: Wacker-Chemie GmbH
    Inventors: Herbert Eck, Gerald Fleischmann, Konrad Wierer
  • Patent number: 5714529
    Abstract: Novel contrast media for use in ultrasonic imaging are described. Such contrast media may be comprised of an aqueous solution of one or more biocompatible polymers, wherein said biocompatible polymers are coated with and/or in admixture with at least one silicon containing compound. Alternatively, the contrast media may be comprised of an aqueous solution of one or more biocompatible synthetic polymers, or an aqueous solution of cellulose. The contrast media may be employed, if desired, with anti-gas agents and/or suspending agents.
    Type: Grant
    Filed: June 5, 1995
    Date of Patent: February 3, 1998
    Assignee: ImaRx Pharmaceutical Corp.
    Inventors: Evan C. Unger, Guanli Wu
  • Patent number: 5710434
    Abstract: The invention is directed to a composition of matter useful as a paper impregnant, to the method of its use, and to the products produced by the method. Poly (diphenylmethane diisocyanate) or PMDI has been used in the past as a paper impregnant with or without propylene carbonate as a diluent. These products have generally required pressing under high pressures and at elevated temperatures. It has now been found that triacetin and/or triethyl citrate in usages up to about 20% of PMDI give superior performance in impregnated products. The modified PMDI will cure at essentially ambient conditions in times as short as 1-2 days to insoluble polyureas with low residual amounts of isocyanates and reaction byproducts such as 4,4'-diaminodiphenylmethane. The treated papers can be used in applications of which skins for sandwich panels and high strength corrugated board would be exemplary.
    Type: Grant
    Filed: September 19, 1996
    Date of Patent: January 20, 1998
    Assignee: Weyerhaeuser Company
    Inventors: David W. Park, Frank R. Hunter
  • Patent number: 5705542
    Abstract: The invention concerns the waste liquor from the chemical-thermal pulping of fibre boards and particle boards containing bonding agents. The waste liquor is produced through a procedure in which fibre boards and wood particle boards are first chopped into shreds and, in a subsequent step, pulped according to a chemical-thermal procedure which dissolves the wood structure. The liquid remaining after the separation of the cellulose is retained as waste liquor and used as extender for wood adhesives.
    Type: Grant
    Filed: October 7, 1994
    Date of Patent: January 6, 1998
    Assignee: Fraunhofer-Gesellschaft zur Forderung der angewadten
    Inventors: Edmone Roffael, Brigitte Dix
  • Patent number: 5679735
    Abstract: A process for the preparation of a synthetic resin dispersion stabilized by a protective colloid employing at least one initiator and based on a polymer of (a) a first monomer of at least one ester of acrylic acid or methacrylic acid and an alcohol containing 1 to 22 carbon atoms; and optionally, (b) a second monomer which can be copolymerized with the first monomers. The process comprises introducing at least 50% of the monomers based on the total weight of the monomers, at least 50% of the protective colloid based on the total weight of the protective colloid, and up to 50% of the initiator based on the total weight of the initiator into a reaction vessel to form an aqueous emulsion. Any remaining monomers and protective colloid and at least 50% of the initiator based on the total weight of the initiator are then added to the reaction vessel at a temperature of 30.degree. to 100.degree. C.
    Type: Grant
    Filed: December 22, 1995
    Date of Patent: October 21, 1997
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Ulrich Geissler, Helmut Rinno, Heinz-Josef Thevissen
  • Patent number: 5665816
    Abstract: Aqueous dispersions prepared by polymerization of vinyl acetate, ethylene, and comonomers selected from the group consisting of vinyl esters of aliphatic (C.sub.3 -C.sub.18)-carboxylic acids, acrylic acid esters, methacrylic acid esters, and maleic acid diesters of aliphatic (C.sub.1 -C.sub.18)-alcohols in the presence of 0.05 to 0.95% by weight of .alpha.,.beta.-unsaturated carboxylic acids, 0 to 0.95% by weight of methacrylic acid esters or acrylic acid esters which carry epoxide or hydroxyl groups, and 1.5 to 20% by weight of cellulose ether, to form a copolymer having a glass transition temperature of -40.degree. to 0.degree. C. and comprising a cellulose ether in at least partly grafted form, are suitable as adhesives, for example, for gluing polyolefins.
    Type: Grant
    Filed: August 30, 1995
    Date of Patent: September 9, 1997
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Bettina Gerharz, Helmut Hintz
  • Patent number: 5580922
    Abstract: The invention is directed to a composition of matter useful as a paper impregnant, to the method of its use, and to the products produced by the method. Poly (diphenylmethane diisocyanate) or PMDI has been used in the past as a paper impregnant with or without propylene carbonate as a diluent. These products have generally required pressing under high pressures and at elevated temperatures. It has now been found that triacetin and/or triethyl citrate in usages up to about 20% of PMDI give superior performance in impregnated products. The modified PMDI will cure at essentially ambient conditions in times as short as 1-2 days to insoluble polyureas with low residual amounts of isocyanates and reaction byproducts such as 4,4'-diaminodiphenylmethane. The treated papers can be used in applications of which skins for sandwich panels and high strength corrugated board would be exemplary.
    Type: Grant
    Filed: June 6, 1995
    Date of Patent: December 3, 1996
    Assignee: Weyerhaeuser Company
    Inventors: David W. Park, Frank R. Hunter
  • Patent number: 5538655
    Abstract: An molecular complex is provided which includes a linear polymer associated with a cyclic molecule to form a rotaxane of the general formula, ##STR1## where R.sub.1 and R.sub.2 are blocking end groups of size and character sufficient to prevent dethreading of the rotaxane and said R.sub.1 and R.sub.2 the same or different;where the cyclic molecule comprises a cyclic skeleton and at least one A functional group, said functional group attached to the cyclic skeleton;where A is selected from the group consisting of polymerizable functional groups, cation complexing groups, anion complexing groups and ionic species; andwherein at least one of R.sub.1, R.sub.2 and A are selected from the group consisting of cation complexing groups, anion complexing groups and ionic species.The molecular complex may used in an electrolyte.
    Type: Grant
    Filed: June 29, 1994
    Date of Patent: July 23, 1996
    Assignee: Arthur D. Little, Inc.
    Inventors: Denis G. Fauteux, Martin van Buren, John Powell
  • Patent number: 5539015
    Abstract: A synthetic resin composition comprises an aqueous medium, a surfactant, and a resin and filler dispersed in the aqueous medium by the surfactant. The surfactant comprises a first high molecular weight compound having a weight-average molecular weight of at least 10000 and a second high molecular weight compound having a weight-average molecular weight of not less than 150 and less than 10000. In the synthetic resin composition, a solid material is well dispersed and the viscosity doesn't remarkably increase even if a solid content is increased. So, the increased amount of a non-volatile matter may be used and the storage stability improves. Further, flame retardation, deodorization, heat resistance and light fastness also improve. In addition, an interior material coated with the synthetic resin composition is provided.
    Type: Grant
    Filed: May 27, 1994
    Date of Patent: July 23, 1996
    Assignees: Kabushiki Kaisha Toyota Chuo Kenkyusho, Toyota Jidosha Kabushiki Kaisha, Toyoda Boshoku Corporation, Dainippon Ink and Chemicals, Incorporated
    Inventors: Mitsumasa Horii, Masahiro Sugiura, Seiji Onoda, Yoshio Yamada, Osamu Araki, Yoshiro Umemoto, Kazuo Ito, Takatoshi Sekihara, Akihiro Matsuyama, Masaaki Izumichi, Kiyoshi Umehara, Reizaburo Tomioka
  • Patent number: 5536778
    Abstract: A pressure-sensitive adhesive is obtainable by a process comprising polymerizingan ester of acrylic or methacrylic acid having a non-tertiary alcohol comprising 4 to 12 carbon atoms in the alkyl chain (component A) in the presence ofat least one kind of a naturally occuring polysaccharide except hydrolyzed starch, cellulose ethers and cellulose esters (component B),radical chain initiators (component C).The pressure sensitive articles manufactured from the pressure sensitive adhesive have improved properties. In particular, the articles are repositionable and the adhesion under humid conditions is improved when cellulose powder is used as component B.
    Type: Grant
    Filed: April 21, 1993
    Date of Patent: July 16, 1996
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Karl W. Kreckel, Andreas H. Graichen
  • Patent number: 5487948
    Abstract: Bis(bis-silylalkyl) dicarboxylates, especially maleates and fumarates, are prepared by a three-step process including esterification of malaic or fumaric acid or a functional derivative thereof with a branched dienol such as 1,6-heptadien-4-ol to form an alkadienol ester, reaction of the olefinic groups in said ester with a chlorosilane and alcoholysis of the chlorine atoms attached to silicon. The products are useful as adhesion promoters in addition curable polyorganosiloxane compositions.
    Type: Grant
    Filed: January 26, 1995
    Date of Patent: January 30, 1996
    Assignee: General Electric Company
    Inventor: Judith Stein