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...that Kleenex tissue was originally designed to be a gas mask filter? It was developed at the beginning of World War I to replace cotton, which was then in short supply as a surgical dressing.
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| Number | Title | Issue Date |
| 7776981 | Colloidally stabilized emulsions A filter substrate impregnated with an emulsion polymer, the emulsion polymer being substantially devoid of phenolics and stabilized using a protective colloid. ... | 08/17/2010 |
| 7385005 | Polyvinylacetal resin and process for producing the same A polyvinylacetal resin powder with a low metal content, being excellent in transparency, moisture resistance and electrical insulating properties and having a large specific surface area, and a process for its production, are presented. A polyvinylacetal resin powd... | 06/10/2008 |
| 7312254 | High temperature stabilization of UV systems A composition comprising one or more radiation curable monomers and/or oligomers and one or heat stable composition comprising at least one radiation-curable alpha, beta-ethylenically unsaturated compound, at least one phenolic stabilizer, and at least one non-pheno... | 12/25/2007 |
| 7312272 | Food coating substance containing a softener-free aqueous copolymer poly(vinyl ester) dispersion, production and use thereof A novel food coating substance comprising a plasticizer-free aqueous copolymer poly(vinyl ester) dispersion of emulsion polymer, emulsifier, protective colloid and optionally other stabilizers is outstandingly suitable for the surface treatment or surface coating of... | 12/25/2007 |
| 7232867 | Process for producing vinyl chloride polymer There is provided a process for producing a vinyl chloride-based polymer, in which a suspension polymerization of either vinyl chloride monomer, or a mixture of vinyl chloride monomer and another copolymerizable monomer, is conducted in a polymerization vessel fitte... | 06/19/2007 |
| 7122582 | Production method of porous spherical particles of vinyl polymer The present invention provides a method of producing porous spherical particles, which includes suspension polymerization of a multifunctional monomer having two or more vinyl groups and a vinyl monomer having one vinyl group in an aqueous medium in the presence of ... | 10/17/2006 |
| 7109275 | Co-metering of organic initiators and protective colloids during polymerization reactions The invention pertains to a process wherein initiators and protective colloids are both metered to a polymerization mixture. This manner of metering allows for improved control of the polymerization rate and an improved reactor space-time yield, and the process will... | 09/19/2006 |
| 7094831 | Aqueous polymer dispersion An aqueous polymer dispersion prepared by free-radical polymerization of vinyl acetate in the presence of at least one ionic emulsifier, at least one free-radical initiator and at least one protective colloid, wherein the polymerization is carried out in the presenc... | 08/22/2006 |
| 7049360 | Water-soluble or water-dispersible (co) polymers of hydroxyalkyl (meth) acrylates, a process for their preparation, and their use as coating agent, binder and/or film-forming excipient pharmaceutical dosage forms The present invention relates to water-soluble or water-dispersible copolymers obtainable by free-radical polymerization of a) 80 to 20% by weight of hydroxy-C1–C6-alkyl (meth)acrylate and, where appropriate... | 05/23/2006 |
| 7034068 | Aqueous dispersions of water-soluble polymers of N-vinyl carboxylic acid amides, method for the production and use thereof Aqueous dispersions of water-soluble polymers of N-vinylcarboxamides contain, based on 100 parts of water, (A) from 5 to 80 parts by weight of water-soluble polymer containing N-vinylformamide units and/or N-vinylacetamide units and having particle size... | 04/25/2006 |
| 7026384 | Process for the preparation of an aqueous dispersion of halogenated vinyl polymers involving a basic after-treatment The invention relates to a process for the preparation of an aqueous dispersion of halogenated vinyl polymers by polymerization, according to which, after polymerization, a basic agent is added in an amount such that the pH of the aqueous dispersion is less than app... | 04/11/2006 |
| 7001960 | Process for producing vinyl chloride-based polymer A process for producing a vinyl chloride-based polymer by suspension polymerization is provided. The polymerization is initiated in the presence of (A) a particular hydroxypropylmethylcellulose, (B) a particular partially saponified PVA with a saponification degree ... | 02/21/2006 |
| 6967026 | Hard capsule A hard capsule which is made mainly of a polymer or copolymer obtained by polymerizing or copolymerizing at least one polymerizable vinyl monomer in the presence of polyvinyl alcohol and/or a derivative thereof. Unlike conventional hard capsules, this hard capsule c... | 11/22/2005 |
| 6964993 | Paper coating slip containing polyvinyl alcohol as a protective colloid A paper coating slip contains a polymer dispersed with polyvinyl alcohol as protective colloid in water (abbreviated to PVA-dispersed polymer). ... | 11/15/2005 |
| 6943223 | Controlled shear and turbulence flow pattern within a liquid in a vessel The present invention provides a process to create without mechanical agitation a zone of low shear, low turbulence flow pattern within a continuous liquid phase contained in a vessel and comprising a dispersed phase consisting of particles or immiscible liquid drop... | 09/13/2005 |
| 6927264 | Metal complexes and polymerization process using same A metal complex useful as a component of a catalyst composition for addition polymerizations comprising an anionic, polycyclic, fused ring ligand system containing at least 4 fused rings, at least one such ring comprising at least one heteroatom, said ligand being b... | 08/09/2005 |
| 6897269 | Processes for transitioning between Ziegler-Natta and alumoxane-based single-site polymerization catalysts Processes for transitioning among polymerization catalyst systems, preferably catalyst systems that are incompatible with each other. In particular, the processes relate to transitioning among olefin polymerization reactions utilizing Ziegler-Natta catalyst systems,... | 05/24/2005 |
| 6881778 | Polyvinyl alcohol copolymer composition A polyvinyl alcohol copolymer latex composition comprises an intimate polymer composition obtained from 10% to 60% by weight of a substantially hydrolyzed low molecular weight polyvinyl alcohol (PVOH); 2% to 80% by weight of at least one diene; 2% to 80% by weight o... | 04/19/2005 |
| 6762248 | Suspension polymerizing epoxy group-containing acrylic resin An epoxy group-containing acrylic resin for a powder coating is prepared by suspension polymerization at a temperature of at least 80° C. and a pressure of at least 2 kg/cm2 with a vinyl monomer mixture comprising from 10-60% by weight of epoxy group-con... | 07/13/2004 |
| 6716941 | High solids ethylene-vinyl acetate latex The present invention is directed to an ethylene-vinyl acetate dispersion and a process for making the dispersion by polymerizing a monomer mixture having vinyl acetate and ethylene in a batch process, in the presence of a stabilizing system of polyvinyl alcohol and... | 04/06/2004 |
| 6673862 | Vinyl acetate ethylene emulsions stabilized with poly(ethylene/poly (vinyl alcohol) blend The present invention provides for the production of stable aqueous dispersions of vinyl acetate-ethylene copolymers, preferably at high solids, i.e., greater than 65 wt %, preferably >70% which are useful as adhesives. The vinyl acetate-ethylene copolyme... | 01/06/2004 |
| 6639049 | Process for the preparation of polymers having a reduced content of volatile components The invention relates to a process for the preparation of polymers stabilized with protective colloids in the form of water-redispersible powders or aqueous dispersions thereof having a reduced content of volatile components, by a) polymerizing by emu... | 10/28/2003 |
| 6635709 | Dispersion stabilizer for suspension polymerization of vinyl compound A dispersion stabilizer for suspension polymerization of a vinyl compound containing a vinyl alcohol polymer (A) having a content of an ethylene unit of 0.5 to 10 mol %, a degree of saponification of 60 mol % or more and a degree of polymerization of 600 ... | 10/21/2003 |
| 6632869 | Process for preparing polymer dispersions with a high solids content A process for preparing copolymers based on vinyl esters and ethylene and, if desired, further comonomers in the form of their aqueous dispersions, having a solids content of greater than 65% and a Brookfield viscosity (20 s-1) of less than 10,... | 10/14/2003 |
| 6613853 | Production method of vinyl resin A production method of a vinyl resin, which comprises subjecting a vinyl compound to suspension polymerization in a polymerization tank equipped with a reflux condenser in the presence of a dispersion stabilizer, wherein a polyvinyl alcohol resin (A) havi... | 09/02/2003 |
| 6610798 | Controlled suspension polymerization process without mechanical agitation Non-Newtonian fluids, such as partially polymerized monomers or solutions of polymer in monomer may be pressure atomized below the free surface of a continuous liquid phase to produce a dispersed phase. A uniform or customized droplet size distribution ca... | 08/26/2003 |
| 6599638 | Colloidally stabilized emulsions A filter substrate impregnated with an emulsion polymer, the emulsion polymer being substantially devoid of phenolics and stabilized using a protective colloid.... | 07/29/2003 |
| 6593412 | Water based emulsion copolymers incorporating vinyl ethylene carbonate Aqueous based emulsion copolymers containing vinyl ethylene carbonate, vinyl acetate, and one or more other ethylenically unsaturated monomers, and aqueous based poly(vinyl alcohol)-containing emulsion copolymers formed by emulsion copolymerization of vin... | 07/15/2003 |
| 6509420 | Powder coating composition comprising epoxy group-containing acrylic resin An epoxy group-containing acrylic resin for a powder coating composition is a copolymer, having a weight-average molecular weight of 3000 to 20000, of a vinyl monomer mixture comprising 10 to 60% by weight of alkyl ester(s) of (meth)acrylic acid, 10 to 60... | 01/21/2003 |
| 6451898 | Aqueous emulsion and method for producing it Provided is an aqueous emulsion comprising, as the dispersant, a polyvinyl alcohol containing from 1 to 15 mol % of ethylene units in the molecule and having a degree of hydrolysis of at least 95 mol %; and, as the dispersoid, a vinyl ester polymer. The a... | 09/17/2002 |
| 6429251 | Polyvinyl alcohol-stabilized 1,3-diene/ (meth)acrylate copolymers The invention discloses polyvinyl alcohol-stabilized copolymers of 1,3-dienes with methacrylates and/or acrylates in the form of their aqueous polymer dispersions or polymer powders redispersible in water, and to a process for their preparation and their ... | 08/06/2002 |
| 6413629 | Easy adhesion film for transparent conductive thin film An easy adhesion film for a transparent conductive thin film comprises a transparent polymer film and an easy adhesion layer formed on the transparent polymer film, wherein the easy adhesion layer comprises at least an ionizing radiation curable resin bin... | 07/02/2002 |
| 6350835 | Emulsions of peroxyesters The invention relates to aqueous emulsions of peroxyesters comprising an anti-freeze agent, a polyvinyl acetate with a degree of hydrolysis between 45 and 68%, and a non-ionic surfactant with an HLB value greater than 16 selected from alkylene oxide block... | 02/26/2002 |
| 6337378 | Process for producing polyvinyl chloride paste blending resin The present invention is a process for producing a polyvinyl chloride paste blending resin comprising polymerizing a vinyl chloride-based monomer by a suspension polymerization in an aqueous medium, wherein as a suspending agent, both (A) and (B) are used... | 01/08/2002 |
| 6331587 | Polyvinyl ester dispersions and methods for their preparation Polyvinyl ester dispersions which can be employed as binders in building materials, preferably in the form of redispersible plastics powders, are obtained by polymerization of at least one vinyl ester and optionally other monomers which can be copolymeriz... | 12/18/2001 |
| 6313250 | Polyfunctionally reactive polymer substances The invention relates to polyfunctionally reactive polymeric substances which contain at least two structural units of the general formulae (I) and/or (II) ##STR1## in the molecule and whose polymer backbone linkages are C--C bonds, ether bonds, uret... | 11/06/2001 |
| 6313203 | Use of polyalcohols as polymer stabilizers Natural cyclic polyalcohols such as polyfructoses and, dehydration products of sugar alcohols can be used for stabilising thermoplastic polymers, at a ratio of 0.001-5 phr of polyol with respect to the polymer. The cyclic polyol is in particular inulin or... | 11/06/2001 |
| 6300403 | Method for producing polymers stabilized with protective colloids A method for producing protective-colloid-stabilized polymers in the form of their aqueous polymer dispersions or in the form of powders which can be re-dispersed in water, wherein one or several monomers from the group made up of vinyl aromatics, 1.3 die... | 10/09/2001 |
| 6291573 | Preparation of polymer powders The present invention relates to a process for preparing polymer powders from aqueous polymer dispersions in which the dispersed polymer P comprises in copolymerized form: i) at least one vinylaromatic monomer (a), ii) 1,3-butadiene as monomer (b), and iii) on... | 09/18/2001 |
| 6245851 | Vinyl acetate/ethylene high solids emulsions A continuous emulsion polymerization process consisting of multiple stirred-tanks in series is used to produce a broad particle-size distribution for vinyl acetate-based emulsions utilizing polyvinyl alcohol as a protective colloid. When low-molecular-wei... | 06/12/2001 |
