Fat, Fatty Oil, Or Higher Fatty Acid Patents (Class 162/179)
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Patent number: 5503669Abstract: A paper coating composition includes a paper coating color formulation and a lubricating additive selected from the group consisting of: a) sulfonated oleochemical derivatives and b) mixtures of calcium stearate and polymer emulsions.Type: GrantFiled: January 14, 1994Date of Patent: April 2, 1996Assignee: Henkel CorporationInventors: Rudolph F. Klima, Joseph D. Rossi, Bert Gruber
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Patent number: 5501771Abstract: Homogeneous and regular paper sheets are shaped, via conventional papermaking technique, from nonpolluting papermaking compositions comprising an aqueous suspension of cellulosic papermaking fibers that also include (a) an inorganic filler material, (b) a papersizing agent and (c) a ternary retention additive which comprises (c)(1) a cationic starch, (c)(2) a polyaluminum chloride and (c)(3) an anionic silica.Type: GrantFiled: April 28, 1994Date of Patent: March 26, 1996Assignee: Elf Atochem S.A.Inventor: Lucien Bourson
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Patent number: 5498315Abstract: A method of enhancing the opacity of paper and paper of enhanced opaqueness is provided wherein a reaction product of dimerized acid and alkanol diamine an further including a surfactant, is added to a slurry of cellulose fibers in a papermaking process. A viscosity controlling gent may be added to the reaction product.Type: GrantFiled: May 12, 1995Date of Patent: March 12, 1996Assignee: Sequa Chemicals, Inc.Inventors: Louis R. Dragner, Bernard F. North
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Patent number: 5494555Abstract: A method of enhancing the opacity of paper and paper of enhanced opaqueness is provided wherein a reaction product of fatty acid, diamine and a glyoxal product an further including a surfactant, is added to a slurry of cellulose fibers in a papermaking process.Type: GrantFiled: May 12, 1995Date of Patent: February 27, 1996Assignee: Sequa Chemicals, Inc.Inventors: Louis R. Dragner, Bernard F. North
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Patent number: 5492600Abstract: A method of enhancing the opacity of paper and paper of enhanced opaqueness is provide wherein a reaction product of fatty acid, diamine and rosin acid and further including a surfactant is added to an slurry of cellulose fibers in the papermaking process.Type: GrantFiled: May 10, 1995Date of Patent: February 20, 1996Assignee: Sequa Chemicals, Inc.Inventors: Louis R. Dragner, Bernard F. North
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Patent number: 5489638Abstract: At least 20% of poly(vinyl alcohol) (PVA) is dispersed in an aqueous solution of at least one salt dissolved therein selected from the group of sodium or potassium formate, sodium, potassium, or magnesium sulfate, sodium or potassium citrate, sodium or potassium polyacrylate, or mixtures thereof. This aqueous suspension of PVA is useful in systems in which PVA is dissolved in order to reduce the time of dissolution.Type: GrantFiled: April 2, 1992Date of Patent: February 6, 1996Assignee: Aqualon CompanyInventor: Charles L. Burdick
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Patent number: 5484509Abstract: A method for treating paper which comprises applying to the surface of the paper an aqueous medium containing a sizing composition consisting essentially of 75 to 99.9 wt % polyvinyl alcohol which is at least 95 mole % hydrolyzed and 0.1 to 25 wt % ketene dimer represented by the formula: ##STR1## wherein R and R.sup.1 are the same or different hydrocarbyl groups having 8-30 carbon atoms.Type: GrantFiled: August 3, 1994Date of Patent: January 16, 1996Assignee: Air Products and Chemicals, Inc.Inventors: Amir Famili, Gerald D. Miller
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Patent number: 5466336Abstract: The present invention provides a process for making a paper based product which comprises a paper sheet, an aqueous latex binder and a release agent comprised of an emulsion of lecithin and a fatty acid or derivative thereof. In one embodiment, the process comprises first preparing a slurry of a cellulosic pulp and a polymeric latex binder, and then breaking the stability of the latex so that the polymer particles of the latex are able to be deposited on the fibers of the cellulosic pulp. An emulsion comprised of lecithin and a fatty acid or derivative thereof is added during the process. The addition can be to the slurry, or to the web which is formed when the slurry is drained of liquid. The web is then dried to provide the paper based product. In a preferred embodiment, a slurry of cellulosic pulp is first drained of liquid to form a web, with the polymeric latex binder and emulsion being applied to the web prior to drying.Type: GrantFiled: August 9, 1993Date of Patent: November 14, 1995Assignee: CPG Holdings Inc.Inventor: Homan B. Kinsley, Jr.
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Patent number: 5460698Abstract: A method for inhibiting the formation of foam in a papermaking system by adding a foam control composition consisting of a) either a polyoxyethylene-polyoxypropylene fatty alcohol or polyoxyethylene-polyoxypropylene difatty acid and b) oleic diethanolamide.Type: GrantFiled: October 31, 1994Date of Patent: October 24, 1995Assignee: Betz Laboratories, Inc.Inventor: Duy T. Nguyen
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Patent number: 5456800Abstract: A process for increasing the resistance of the cut edges of liquid packaging board to penetration by hot hydrogen peroxide, comprising adding to an aqueous pulp slurry at a neutral to alkaline pH, either separately or in preblended form an aqueous emulsion of a cellulose-reactive size, a non-cellulose-reactive size selected from the group consisting of waxes, bis-stearamides, and fatty acid derivatives, and a thermosetting resin that is capable of covalent bonding to cellulose fiber and self-cross-linking.Type: GrantFiled: July 19, 1993Date of Patent: October 10, 1995Assignee: Hercules IncorporatedInventors: Anthony C. Tansley, John D. Ballantine
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Patent number: 5433776Abstract: An improvement is disclosed in a method for sizing a paper product of sheeted cellulosic fibers by incorporating into the fibers a ketene dimer size, the improvement involving treating the fibers with an aquasol of positively charged colloidal silica, positively charged colloidal alumina, or positively charged colloidal zirconia containing the ketene dimer size.Type: GrantFiled: October 21, 1994Date of Patent: July 18, 1995Assignee: Hercules IncorporatedInventor: Sunil P. Dasgupta
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Patent number: 5429718Abstract: Polyglycerol esters have been found to be effective antifoam agents in aqueous systems employed in paper processing. Adjunct antifoam agents are not required. Best results are obtained with polyglycerol esters having a degree of glycerine polymerization in the range of 3 to 6 and an esterification range of 15 to 85%.Type: GrantFiled: November 12, 1993Date of Patent: July 4, 1995Assignee: Lonza Inc.Inventors: Nancy M. Morlino, Philip G. Sweeny, Brian D. Curham
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Patent number: 5415737Abstract: Fibrous cellulose materials useful in the manufacture of soft, absorbent paper products such as paper towels, facial tissues, and toilet tissue are disclosed. The paper products contain a biodegradable vegetable oil based ester-functional quaternary ammonium chemical softening compound. Examples of preferred vegetable oil based ester-functional quaternary ammonium chemical softening compounds include diester dioleyldimethyl ammonium chloride (DEDODMAC) (i.e., di(octadec-z-9-oenoyloxyethyl)dimethylammonium chloride) and diester dierucyldimethyl ammonium chloride (DEDEDMAC) (i.e., di(docos-z-13-enoyloxyethyl)dimethylammonium chloride). Depending upon the paper product characteristic requirements, the saturation level of the fatty acyl groups of the vegetable oils can be tailored. Variables that need to be adjusted to maximize the benefits of using unsaturated vegetable oil based acyl groups include the Iodine Value (IV) of the fatty acyl groups; and the cis/trans isomer weight ratios in the fatty acyl groups.Type: GrantFiled: September 20, 1994Date of Patent: May 16, 1995Assignee: The Procter & Gamble CompanyInventors: Dean V. Phan, Paul D. Trokhan
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Patent number: 5411639Abstract: A papermaking process with improved sizing efficiency and reduced size reversion is characterized by the use of a calcium carbonate pigment which is surface treated with an anionic starch-soap complex. The starch-soap complex is precipitated onto the pigment surfaces to provide bonding sites for sizing agents which impart water repellency to the paper. The sizing agents become bound to the starch component of the starch-soap complex to yield more reacted size in paper webs formed from the furnish than would be present without the use of the treated pigment. The use of the surface treated pigment also allows the papermaker to increase the filler content of the paper without sacrificing dry strength properties.Type: GrantFiled: October 15, 1993Date of Patent: May 2, 1995Assignee: Westvaco CorporationInventor: Frederick L. Kurrle
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Patent number: 5407537Abstract: Size dispersion in paper stock is improved by treatment of cellulose water slurry with cationizing compounds and mixing a sizing product, either neat or in solution, with the water and injecting the mixture in droplet form into said cellulose water slurry before, during or after the paper web formation whether said paper web is dry or not and drying the paper web, an apparatus for carrying out the improved process is included.Type: GrantFiled: May 5, 1994Date of Patent: April 18, 1995Assignee: Exxon Chemical Patents IncInventors: Alberto Malatesta, Christian Pierre, Rene Cohard
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Patent number: 5405501Abstract: Multi-layered tissue paper webs comprising chemical softener compositions and binder materials are disclosed. The multi-layered tissue webs are useful in the manufacture of soft, absorbent paper products such as facial tissues and/or toilet tissues. The multi-layered tissue paper products contain a chemical softening composition comprising a mixture of a quaternary ammonium compound and a polyhydroxy compound. Preferred quaternary ammonium compounds include dialkyl dimethyl ammonium salts such as di(hydrogenated)tallow dimethyl ammonium chloride, di(hydrogenated)tallow dimethyl ammonium methyl sulfate. Preferred polyhydroxy compounds are selected from the group consisting of glycerol, sorbitols, polyglycerols having a weight average molecular weight of from about 150 to about 800, polyoxyethylene glycols and polyoxypropylene glycols having a weight average molecular weight from about 200 to 4000.Type: GrantFiled: June 30, 1993Date of Patent: April 11, 1995Assignee: The Procter & Gamble CompanyInventors: Dean V. Phan, Paul D. Trokhan
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Patent number: 5399241Abstract: Disclosed is a method for producing an absorbent creped cellulosic sheet having a high level of surface-perceived softness that comprises continuously forming a web of cellulosic papermaking fibers, adhering said web to a thermal drying means, treating said adhered web with an amido amine salt derived from a partially acid-neutralized amine, and creping said treated web from said thermal drying means.Type: GrantFiled: October 1, 1993Date of Patent: March 21, 1995Assignee: James River Corporation of VirginiaInventors: T. Philips Oriaran, Anthony O. Awofeso, Thomas N. Kershaw, Phuong V. Luu, Cristian M. Neculescu, Michael E. Huss
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Paper wet-strength improvement with cellulose reactive size and amine functional poly(vinyl alcohol)
Patent number: 5397436Abstract: The wet strength of cellulosic paper is improved by adding the combination of an amine-functional poly(vinyl alcohol) and a cellulose reactive size which is a 4 or 5 membered cyclic ester or anhydride having alkyl or alkenyl substituents of 4 or more carbon atoms. The amine-functional polymer is preferably a hydrolyzed copolymer of vinyl acetate and N-vinylformamide in which about 1-25 mole % of the monomer units are incorporated N-vinylformamide, and the cellulose reactive size is preferably an alkyl ketene dimer or an alkenyl succinic anhydride. A paper product is provided having improved wet-strength and containing normally 0.05 to 4.0 wt % based on the dry pulp of the additive amine-functional polymer and cellulose reactive size. The particular compounds which represent the polymer and the size cooperate to provide improvements in wet-tensile strength for paper which could not have been foreseen from the effects of either material acting alone.Type: GrantFiled: March 7, 1994Date of Patent: March 14, 1995Assignee: Air Products and Chemicals, Inc.Inventors: Lloyd M. Robeson, George Davidowich, Robert K. Pinschmidt, Jr. -
Patent number: 5391225Abstract: An alkenylsuccinic acid emulsion sizing agent, wherein said alkenylsuccinic acid emulsion sizing agent has a solid concentration of at least 25% by weight, and comprises active components comprising an alkenylsuccinic acid present in an amount of at least 50 parts by weight, per 100 parts by weight of the total active components in the alkenylsuccinic acid emulsion sizing agent; and, wherein said alkenylsuccinic acid is obtained by dispersing a product prepared by reacting a branched inner olefin having from 9 to 18 carbon atoms with maleic anhydride in water using an amphoteric acrylamide-series polymer.Type: GrantFiled: October 13, 1993Date of Patent: February 21, 1995Assignee: Mitsubishi Oil. Co., Ltd.Inventors: Hatanaka Shigeto, Hideto Umekawa
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Patent number: 5385642Abstract: A process for making tissue papers, in particular pattern densified tissue papers, having an enhanced tactile sense of softness when treated with tri-component biodegradable softener compositions are disclosed. These tri-component softener compositions comprise nonionic softeners, nonionic surfactant compatibilizers and polyhydroxy compounds. The weight ratio of the nonionic softeners to the nonionic surfactant compatibilizers ranges typically from about 10:1 to 1:10. The weight ratio of the nonionic softeners to the polyhydroxy compounds ranges typically from about 10:1 to 1:10. The tri-component biodegradable softeners are typically applied from an aqueous dispersion to at least one surface of the dry tissue paper web.Type: GrantFiled: May 13, 1993Date of Patent: January 31, 1995Assignee: The Procter & Gamble CompanyInventors: Dean Van Phan, Paul D. Trokhan, David C. Hippe
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Patent number: 5378322Abstract: In the non-acidic sizing of paper reaction between alkylketene dimer sizing agent and cellulose of cellulosic paper-making fibers is catalyzed by dissolving carbon dioxide in an aqueous vehicle of an aqueous pulp of the paper-making fibers; the carbon dioxide provides bicarbonate ions which catalyse the reaction; the bicarbonate ions may be generated by dissociation of the carbon dioxide in water, or by reaction of the carbon dioxide with calcium carbonate incorporated in the pulp as a filler for the paper, or with some other alkali present.Type: GrantFiled: May 21, 1993Date of Patent: January 3, 1995Assignee: Canadian Liquid Air Ltd.Inventor: Derek Hornsey
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Patent number: 5374335Abstract: The present invention relates to a sized paper containing a hydrophobic zeolite. Suitably, the sized paper is fine paper, kraft liner or paperboard. In paperboard intended for solid or liquid foodstuffs, tobacco or medicines, use is also made of the capacity of the zeolite to reduce, by adsorption, the problem of transfer from the package to its content of substances causing undesirable taste or hazardous substances. The present invention also relates to a method for production of the sized paper by forming and dewatering a suspension of lignocellulose-containing fibres, where the dewatering is carried out in the presence of a hydrophobic zeolite. Due to the inert nature of the zeolite, it can be used in papermaking within a very broad pH range. The present invention also relates to the use of a hydrophobic zeolite for the production of sized paper as well as use of the thus-sized paper in packaging material.Type: GrantFiled: November 1, 1993Date of Patent: December 20, 1994Assignee: Eka Nobel ABInventors: Erik Lindgren, Ulf Carlson, Lennart Nilsson
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Patent number: 5362364Abstract: An alkaline paper is produced by adding a cationic starch containing an alkyltetrahydro-1,3,5-2H-thiadiazine-2-thione or a bromonitroalcohol, and an alkylketene dimer to a paper stock. Formation of slime in the paper stock system is substantially inhibited and an alkaline paper excellent in sizing characteristics and safety to man is obtained.Type: GrantFiled: September 14, 1993Date of Patent: November 8, 1994Assignee: Mitsubishi Paper Mills LimitedInventors: Toru Katsura, Hideaki Senoh
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Patent number: 5354425Abstract: Tissue papers, in particular pattern densified tissue papers, having an enhanced tactile sense of softness when treated with certain polyhydroxy fatty acid amide softener systems that are biodegradable are disclosed. The polyhydroxy fatty acid amides have the formula: ##STR1## wherein R.sup.1 is H, C.sub.1 -C hydrocarbyl, 2-hydroxyethyl, 2-hydroxypropyl, methoxyethyl, methoxypropyl or a mixture thereof; R.sup.2 is a C.sub.5 -C.sub.31 hydrocarbyl group; and Z is a polyhydroxyhydrocarbyl moiety having a linear hydrocarbyl chain with at least 3 hydroxyls directly connected to the chain.Type: GrantFiled: December 13, 1993Date of Patent: October 11, 1994Assignee: The Procter & Gamble CompanyInventors: Larry N. Mackey, Saeed Ferershtehkhou, Jeffrey J. Scheibel
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Patent number: 5334286Abstract: Tissue papers, in particular pattern densified tissue papers, having an enhanced tactile sense of softness when treated with tri-component biodegradable softener compositions are disclosed. These tri-component softener compositions comprise nonionic softeners, nonionic surfactant compatibilizers and polyhydroxy compounds. The weight ratio of the nonionic softeners to the nonionic surfactant compatibilizers ranges typically from about 10:1 to 1:10. The weight ratio of the nonionic softeners to the polyhydroxy compounds ranges typically from about 10:1 to 1:10. The tri-component biodegradable softeners are typically applied from an aqueous dispersion to at least one surface of the dry tissue paper web.Type: GrantFiled: May 13, 1993Date of Patent: August 2, 1994Assignee: The Procter & Gamble CompanyInventors: Dean Van Phan, Paul D. Trokhan
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Patent number: 5330622Abstract: Coating and impregnation of bases.The invention relates to a composition for impregnating a base, more particularly a paper or textile base, said composition being intended to provide said base with barriers, especially at least hydrophobic barriers, and including glyoxal, the composition also being intended to provide oleophobic and solvanophobic properties simultaneously and comprising the following, by weight of dry product relative to the base:at least 0.03% of glyoxal,at least 0.01% of a dimeric alkylketen andat least 0.002% of a fluorinated salt selected from the family of the diethanolamine salts of perfluoroalkyl ethyl phosphates.Composition for rendering a paper or textile base hydrophobic, oleophobic and solvanophobic.Type: GrantFiled: July 24, 1992Date of Patent: July 19, 1994Assignee: Aussedat-ReyInventors: Andre Honnorat, Claude Riou
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Patent number: 5328567Abstract: Provided is a process for making a paper based product which comprises first preparing a slurry of a cellulosic pulp, a particulate binder substantially insoluble in water, and an emulsion comprised of lecithin and a fatty acid or derivative thereof. This slurry is then drained of liquid to form a web, with the web being dried to provide the paper based product. The preferred polymeric binder is a hydrolyzed polyvinyl alcohol powder, which binder can be present in the final dried product in amounts of up to about 20 weight percent or more. The use of the emulsion comprised of lecithin and a fatty acid or derivative thereof permits a web containing such a high amount of sticky polymeric binder to be dried at high temperatures, without the web sticking to the drying cans generally used in commercial processes. The process of the present invention thereby permits one to efficiently prepare such a paper based product using conventional, commercial papermaking machinery.Type: GrantFiled: February 10, 1992Date of Patent: July 12, 1994Assignee: Custom Papers Group Inc.Inventor: Homan B. Kinsley, Jr.
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Patent number: 5326499Abstract: Antifoams for the paper industry are based on oil-in-water emulsions in which the oil phase accounts for from 5 to 50% by weight of the emulsion and contains(a) an alcohol of not less than 12 carbon atoms, fatty esters of alcohols of not less than 22 carbon atoms and C.sub.1 -C.sub.36 -carboxylic acids, distillation residues which are obtainable in the preparation of alcohols having a relatively large number of carbon atoms by the oxo synthesis or by the Ziegler method and which may be alkoxylated, a mixture of the stated compounds and/or(b) a fatty ester of a C.sub.12 -C.sub.22 -carboxylic acid with a monohydric to trihydric C.sub.1 -C.sub.18 -alcohol and, if required,(c) a hydrocarbon having a boiling point above 200.degree. C.Type: GrantFiled: August 20, 1992Date of Patent: July 5, 1994Assignee: Basf AktiengesellschaftInventors: Brigitte Wegner, Knut Oppenlaender, Rudolf Schuhmacher, Andreas Hohmann, Gabriele Dralle-Vos
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Patent number: 5312522Abstract: Fibrous cellulose materials useful in the manufacture of soft, absorbent paper products such as paper towels, facial tissues, and toilet tissue are disclosed. The paper products contain a biodegradable chemical softening composition comprising a mixture of a biodegradable quaternized ester-amine compound and a polyhydroxy compound. Preferred biodegradable quaternized ester-amine compounds include diester dialkyldimethylammonium salts such as the diester ditallow dimethyl ammonium chloride, diester di(touch hydrogenated) tallow dimethyl ammonium chloride and diester di(hydrogenated) tallow dimethyl ammonium chloride. Preferred polyhydroxy compounds are selected from the group consisting of glycerol, and polyethylene glycols and polypropylene glycols having a weight average molecular weight from about 200 to 4000.Type: GrantFiled: January 14, 1993Date of Patent: May 17, 1994Assignee: Procter & Gamble CompanyInventors: Dean Van Phan, Paul D. Trokhan, Toan Trinh
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Patent number: 5264082Abstract: Tissue paper webs useful in the manufacture of soft, absorbent products such as paper towels, napkins, and facial tissues, and processes for making the webs. The tissue paper webs comprise papermaking fibers, a biodegradable quaternized amine-ester softening compound, a wetting agent, and a permanent wet strength resin. The process comprises a first step of forming an aqueous papermaking furnish from the above-mentioned components. The second and third steps in the basic process are the deposition of the papermaking furnish onto a foraminous surface such as a Fourdrinier wire and removal of the water from the deposited furnish. An alternate process involves the use of the furnish containing the aforementioned components in a papermaking process which will produce a pattern densified fibrous web having a relatively high bulk field of relatively low fiber density in a patterned array of spaced zones of relatively high fiber density.Type: GrantFiled: April 9, 1992Date of Patent: November 23, 1993Assignee: Procter & Gamble CompanyInventors: Dean V. Phan, Paul D. Trokhan
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Patent number: 5262007Abstract: Tissue paper webs useful in the manufacture of soft, absorbent products such as napkins, facial tissues, and sanitary tissues, and processes for making the webs. The tissue paper webs comprise papermaking fibers, a biodegradable quaternized amine-ester softening compound, a wetting agent, and a temporary wet strength resin. The process comprises a first step of forming an aqueous papermaking furnish from the above-mentioned components. The second and third steps in the basic process are the deposition of the papermaking furnish onto a foraminous surface such as a Fourdrinier wire and removal of the water from the deposited furnish. An alternate process involves the use of the furnish containing the aforementioned components in a papermaking process which will produce a pattern densified fibrous web having a relatively high bulk field of relatively low fiber density in a patterned array of spaced zones of relatively high fiber density.Type: GrantFiled: April 9, 1992Date of Patent: November 16, 1993Assignee: Procter & Gamble CompanyInventors: Dean V. Phan, Bart S. Hersko
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Patent number: 5248391Abstract: An oil absorbent, water non-absorbent material is made by boiling unglazed newsprint for a prescribed period of time, removing the slurry from the excess water, and baking until a dried solid cake remains. The solid dried cake is then saturated with linseed oil following which it is treated with hydrolyzed polyvinyl alcohol, baked to a dry solid, and reduced to convenient particle size.Type: GrantFiled: September 10, 1992Date of Patent: September 28, 1993Assignee: OSA Oil Scavenger AbsorbentInventor: Ed V. Lunenschloss
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Patent number: 5246491Abstract: An alkenylsuccinic anhydride type paper sizing agent composition which causes little contamination of a paper machine and exhibits an excellent sizing effect is provided.The paper sizing agent composition contains addition reaction products obtained from an addition reaction between a straight-chain internal olefin comprising 16 to 20 carbon atoms and maleic anhydride, any unreacted olefin and maleic anhydride having been removed from said addition reaction products; said addition reaction products comprising as a main component alkenylsuccinic anhydride (1:1 adduct) represented by formula (I): ##STR1## wherein both of R and R' are alkyl groups or either one of R and R' is an alkyl group while the other is a hydrogen atom; and a 1:2 adduct (2 moles maleic anhydride per mole of olefin), and a decarbonated product of said 1:2 adduct in a total amount, based on said addition reaction products, of from about 7 to about 12 mol%.Type: GrantFiled: July 8, 1992Date of Patent: September 21, 1993Assignee: Mitsubishi Oil Co., Ltd.Inventors: Yoshio Takahashi, Shigeto Hatanaka
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Patent number: 5240562Abstract: Fibrous cellulose material useful in the manufacture of soft, absorbent paper products such as paper towels, facial tissues, and toilet tissue are disclosed. The paper products contain a chemical softening composition comprising a mixture of a quaternary ammonium compound and a polyhydroxy compound. Preferred quaternary ammonium compound include dialkyldimethylammonium salts such as di(hydrogenated) tallow dimethyl ammonium chloride and di(hydrogenated) tallow dimethyl ammonium methyl sulfate. Preferred polyhydroxy compounds are selected from the group consisting of glycerol, and polyethylene glycols and polypropylene glycols having a weight average molecular weight from about 200 to 4000.Type: GrantFiled: October 27, 1992Date of Patent: August 31, 1993Assignee: Procter & Gamble CompanyInventors: Dean V. Phan, Paul D. Trokhan
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Patent number: 5224993Abstract: The present invention relates to a sizing agent which exerts excellent sizing efficiency even under severe conditions, namely, at an elevated temperature in the papermaking step, or at high conditions with a limited aluminum sulfate addition.The sizing agent for paper of the present invention is derived from i) dehydration condensation of an alkenylsuccinic anhydride and an organic carboxylic acid with a polyalkylene polyamine and ii) saponification of the remaining carboxyl groups with alkali following the dehydration condensation. More particularly, the present invention relates to a water-soluble sizing agent which is obtained by mixing an alkenylsuccinic anhydride with 1 to 20 times by molar equivalent, based on said alkenylsuccinic anhydride, as much as an organic carboxylic acid, adding 0.1 to 2.0 times by molar equivalent, based on said alkenylsuccinic anhydride, as much as a polyalkylene polyamine thereto so as to perform dehydration condensation.Type: GrantFiled: May 12, 1992Date of Patent: July 6, 1993Assignee: Mitsubishi Oil Co., Ltd.Inventors: Yoshio Takahashi, Shigeto Hatanaka
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Patent number: 5223096Abstract: Tissue paper webs useful in the manufacture of soft, absorbent products such as paper towels, napkins, and facial tissues, and processes for making the webs. The tissue paper webs comprise papermaking fibers, a quaternary ammonium compound, a polyhydroxy plasticizer, and a permanent wet strength resin. The process comprises a first step of forming an aqueous papermaking furnish from the above-mentioned components. The second and third steps in the basic process are the deposition of the papermaking furnish onto a foraminous surface such as a Fourdrinier wire and removal of the water from the deposited furnish. An alternate process involves the use of the furnish containing the aforementioned components in a papermaking process which will produce a pattern densified fibrous web having a relatively high bulk field of relatively low fiber density in a patterned array of spaced zones of relatively high fiber density.Type: GrantFiled: November 1, 1991Date of Patent: June 29, 1993Assignee: Procter & Gamble CompanyInventors: Dean V. Phan, Paul D. Trokhan
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Patent number: 5219644Abstract: This invention relates to an article comprising:(A) at least one polymer fabric treated with (B) at least one wetting agent which comprises at least one compound of the formulae ##STR1## wherein each R.sub.1 is independently a hydrocarbyl group having from about 8 to about 150 carbon atoms; each R.sub.2 is independently hydrogen, an alkyl group or polyoxyalkylene group; each R.sub.3 is independently an alkylene group; R.sub.4 is an alkyl group or polyoxyalkylene group; n is 1 to about 150; and M is a hydrogen, an ammonium cation or a metal cation.The treated polymer fabrics of the present invention have improved wicking/wetting characteristics. Further, the fabrics maintain these characteristics upon repeated exposure to fluids.Type: GrantFiled: March 15, 1990Date of Patent: June 15, 1993Inventors: Kasturi Lal, Richard M. Lange
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Patent number: 5217576Abstract: Tissue paper webs useful in the manufacture of soft, absorbent products such as napkins, facial tissues, and sanitary tissues, and processes for making the webs. The tissue paper webs comprise papermaking fibers, a quaternary ammonium compound, a polyhydroxy plasticizer, and a temporary wet strength resin. The process comprises a first step of forming an aqueous papermaking furnish from the above-mentioned components. The second and third steps in the basic process are the deposition of the papermaking furnish onto a foraminous surface such as a Fourdrinier photo-polymer wire and removal of the water from the deposited furnish. An alternate process involves the use of the furnish containing the aforementioned components in a papermaking process which will produce a pattern densified fibrous web having a relatively high bulk field of relatively low fiber density in a patterned array of spaced zones of relatively high fiber density.Type: GrantFiled: November 1, 1991Date of Patent: June 8, 1993Inventor: Dean Van Phan
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Patent number: 5201998Abstract: Sizing agents of which some are novel and which have at least one anionic or acidic group which is optionally in the form of a salt and at least two hydrophobic substituents which each have at least 5 carbon atoms, at least two of the most adjacent hydrophobic substituents being bonded to each other with a linking member which has at least 2 hetero atoms, are particularly suitable for use, together with commercially available polymeric, cationic retention aids, in a process for sizing paper or cardboard.Type: GrantFiled: February 28, 1990Date of Patent: April 13, 1993Assignee: Ciba-Geigy CorporationInventors: Rosemarie Topfl, Michael Bernheim, Hubert Meindl, Hans Wegmuller, Peter Rohringer, Dieter Werthemann
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Patent number: 5190584Abstract: Compositions of ketene dimer and nonreactive hydrophobe compound and method for internally sizing paper therewith are provided, wherein the melting point of said hydrophobe compound is higher than the melting point of the ketene dimer.Type: GrantFiled: December 13, 1990Date of Patent: March 2, 1993Assignee: Hercules IncorporatedInventor: Guglielmo Ruffini
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Patent number: 5190616Abstract: The invention relates to self-emulsifying sizing agents which are able to have long shelf stability and easily formable emulsifiable liquid when the agents are mixed with water, and which are suitable for treating paper. These sizing agents comprise of copolymers of particular polyoxyalkylene alkenyl ethers and maleic anhydride. Further, these sizing agents comprise of the above copolymers and particular alkenylsuccinic anhydrides or particular ketene dimers.Type: GrantFiled: October 16, 1990Date of Patent: March 2, 1993Inventors: Shin-ichi Akimoto, Susumu Honda, Tohru Yasukohchi, Hideki Takahashi, Fujio Takahashi
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Patent number: 5139616Abstract: In a papermaking operation which utilizes secondary fiber furnish containing hot melt or pressure sensitive adhesive contaminants, a method of inhibiting stickies comprising adding to the pulp slurry at least one surfactant selected from the group consisting of fatty alkanolamides and ethoxylated compounds in addition to a hydrocarbon solvent.Type: GrantFiled: May 29, 1991Date of Patent: August 18, 1992Assignee: Betz PaperChem, Inc.Inventor: Tien-Feng Ling
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Patent number: 5114538Abstract: Sizing compounds particularly cyclic acid anhydrides are used as such or in solution with non-aqueous protic and/or protic solvents to mass-size cellulose products such as paper, board, cardboard and similar cellulose and synthetic fibre products. In a preferred embodiment, the cyclic acid anhydrides or their solutions in inert solvents are introduced into the wet-end of the paper machine at a position where the paper slurry is in a highly turbulent state so that they are immediately homogenized and reacted with the cellulose stock.Type: GrantFiled: June 19, 1989Date of Patent: May 19, 1992Assignee: Exxon Chemical Patents Inc.Inventor: Francesco Malatesta
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Patent number: 5108545Abstract: Disclosed is a method for making a paper support for photographic paper by a Fourdrinier paper machine of the twin-wire type provided with a lower wire on which a wet web is formed and an endless upper wire facing said lower wire with the wet web between them wherein the upper wire comes in contact with the wet web after the latter has travelled a distance of 5 to 12 m from the point where the paper stock had been fed to the lower wire which is preferably shaked in a horizontal direction and the rate of drainage through the upper wire to the sum of drainages through the lower wire and the upper wire is adjusted to 15 to 50% to give a smooth surface on which a photographic emulsion layer is to be formed.Type: GrantFiled: March 19, 1990Date of Patent: April 28, 1992Assignee: Mitsubishi Paper Mills LimitedInventors: Kenji Marumo, Akihiro Ogawa, Shinsuke Ikemagi
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Patent number: 5104486Abstract: An improved liquid alkenyl succinic anhydride composition having superior paper sizing properties. There is also disclosed a method for the sizing of paper and a method for imparting water-repellency to cellulosic fabrics using the composition of the invention.Type: GrantFiled: February 27, 1987Date of Patent: April 14, 1992Assignee: Chevron Research CompanyInventor: William A. Sweeney
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Patent number: 5062922Abstract: A method for making papers which comprises: using a paper sizing agent comprising as an effective component an .alpha.-hydroxycarboxylic acid having the formula (I): ##STR1## wherein R.sup.1 is an alkyl group having 8 to 30 carbon atoms, an alkenyl group having 8 to 30 carbon atoms, ##STR2## and R.sup.2 is hydrogen atom, or an alkyl or alkenyl group having 1 to 30 carbon atoms, or a salt thereof. The paper sizing agent used in the method can exhibit the excellent sizing effect in paper making under the condition of the wide pH-range from pH 3 to pH 9, and has an excellent storage stability. Further the method is excellent in workability and high in industrial value.Type: GrantFiled: September 22, 1989Date of Patent: November 5, 1991Assignee: Arakawa Kagaku Kogyo Kabushiki KaishaInventors: Masato Nakajima, Kenji Yokotani, Atsushi Ikeda
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Patent number: 5034097Abstract: A composition comprising epoxidized polyamide wet strength resin and lecithin. The composition provides wet strength to paper and molded pulp products and at the same time increases the internal bonding of the paper or molded pulp products.Type: GrantFiled: August 17, 1990Date of Patent: July 23, 1991Assignee: Borden, Inc.Inventors: Elmer D. Martinez, Thomas F. Duncan
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Patent number: 5032226Abstract: A photographic layer carrier, made of a paper coated with polyolefin resin with improved sheet structure and improved strength values, comprises a base paper which includes, in additon ot hydrophobic-properties conveying sizing agent and a cationic wet-proof-properties conveying agent, an amphoteric polyacryl amide and/or polymethacryl amide.Type: GrantFiled: February 10, 1989Date of Patent: July 16, 1991Assignee: Felix Schoeller Jr. GmbH & Co., KGInventor: Robert Winiker
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Patent number: 5026457Abstract: The present invention provides a process for sizing in the production of paper, cardboard, paperboard and other cellulose-containing materials with and without filling materials and/or pigments by natural or synthetic sizing agents under neutral to weakly basic pH conditions without the use of aluminum salts, wherein sizing is carried out with a combination of natural or synthetic sizing agents with a cationic dicyandiamide resin.Type: GrantFiled: February 28, 1989Date of Patent: June 25, 1991Assignee: SKW Trostberg AktiengesellschaftInventors: Rudolf Eichinger, Horst Michaud, Josef Seeholzer
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Patent number: 4959125Abstract: Tissue paper having an enhanced tactile sense of softness through incorporation of an effective amount of a noncationic surfactant is disclosed. Preferably, less than about 2.0% of the noncationic surfactant, on a dry fiber weight basis, is incorporated in the tissue paper: more preferably, only about 1.0% or less is so retained. Tissue paper embodiments of the present invention may further contain a quantity of a binder material, such as starch, for linting control, and to increase paper strength.Type: GrantFiled: December 5, 1988Date of Patent: September 25, 1990Assignee: The Procter & Gamble CompanyInventor: Wolfgang U. Spendel