Derived From Carboxylic Acid Or Derivative Patents (Class 524/5)
  • Patent number: 5211949
    Abstract: Free flowing, conformable powder-like mix of silica particles and a phase change material (p.c.m.) is disclosed. The silica particles have a critical size of about 7.times.10.sup.-3 to about 7.times.10.sup.-2 microns and the pcm must be added to the silica in an amount of 80 wt. % or less pcm per combined weight of silica and pcm. The powder-like mix can be used in tableware items, medical wraps, tree wraps, garments, quilts and blankets, and in cementitious compositions of the type in which it is beneficial to use a pcm material. The silica-pcm mix can also be admixed with soil to provide a soil warming effect and placed about a tree, flower, or shrub.
    Type: Grant
    Filed: February 18, 1992
    Date of Patent: May 18, 1993
    Assignee: University of Dayton
    Inventor: Ival O. Salyer
  • Patent number: 5185389
    Abstract: A modified mortar or concrete composition in which a polymeric binding material is combined with sand, cement, and fine fillers. Use of the higher than previously considered functional ratio of latex binding material to cement permits the resulting mortar or concrete composition to increase the percentage of fine fillers, and reduces the amount of voids as a result of less water loss. The latex material partially fills the voids becoming a part of the structure of the system. This leads to a higher degree of flexibility and coherence of the system.
    Type: Grant
    Filed: July 1, 1991
    Date of Patent: February 9, 1993
    Assignee: GemEng, Ltd.
    Inventor: Riley Victor
  • Patent number: 5182343
    Abstract: A conjugated diene sulfonation product represented by the formula (I): ##STR1## wherein R.sup.1 to R.sup.6, which may be the same or different, represent hydrogen atoms, alkyl groups having 1 to 8 carbon atoms, aryl groups having 6 to 20 carbon atoms or --SO.sub.3 X groups (X represents a hydrogen atom, a metal atom, an ammonium group or a quaternary ammonium group), at least one of said R.sup.1 to R.sup.6 being the --SO.sub.3 X group, a polymer of the conjugated diene sulfonation product or a copolymer of the conjugated diene sulfonation product with a monomer copolymerizable therewith. The sulfonation product, the polymer and the copolymer are useful as a dispersing agent for preparing a solid fuel dispersion, a cement dispersion, a dye and/or pigment dispersion or a metal oxide dispersion or as a water-treating agent, a fiber-treating agent, a plating bath additive and an excavation-muddy water-viscosity-adjusting agent.
    Type: Grant
    Filed: December 26, 1990
    Date of Patent: January 26, 1993
    Assignee: Japan Synthetic Rubber Co., Ltd.
    Inventors: Hisao Ono, Katsumi Ito, Tatuo Uekawa, Katsuhiro Ishikawa
  • Patent number: 5179170
    Abstract: The dispersant composed of a water-soluble salt of either a copolymer of a component in naphtha oil and maleic anhydride or a partial esterification product of said copolymer has improved dispersing ability and the dispersion containing this dispersant will experience only small changes with time.The cement admixture which is a salt of a copolymer of a component in naphtha oil and an unsaturated dicarboxylic acid anhydride or which has further contains a salt of the product of condensation between formaldehyde and a sulfonated aromatic hydrocarbon containing oil is an effective plasticizer and the cement mix incorporating this admixture has a satisfactory initial flow and will experience only small decrease in flowability over time.
    Type: Grant
    Filed: June 30, 1989
    Date of Patent: January 12, 1993
    Assignee: Kawasaki Steel Corporation
    Inventors: Kimiyo Ohtsu, Norihide Enomoto, Yoshihiro Naruse, Masato Takagi, Keiji Sugiura
  • Patent number: 5164431
    Abstract: Provided is a process for producing molded articles having excellent flexural strength, flexibility and dimensional stability, which comprises autoclave-curing at not lower than 100.degree. C. an aqueous composition comprising a hydraulic material (A) and a polyvinyl alcohol (B) powder, said polyvinyl alcohol (B) powder being contained in an amount of 0.1 to 20% by weight based on the weight of said hydraulic material (A).Also provided are molded articles comprising a hydraulic material (A) and a polyvinyl alcohol (B), said polyvinyl alcohol (B) being contained in an amount of 0.1 to 20% by weight based on the weight of said hydraulic material (A), said molded article having a structure comprising said polyvinyl alcohol (B) having once dissolved and then solidified being dispersed therein in the form of islands. These molded articles have excellent flexural strength, flexibility and dimensional stability.
    Type: Grant
    Filed: December 6, 1990
    Date of Patent: November 17, 1992
    Assignee: Kuraray Co., Ltd.
    Inventors: Akio Mizobe, Kenji Saimen, Sotaro Itadani, Ken Yuki
  • Patent number: 5162402
    Abstract: A polymeric composition which reduces the loss of flowability of a cementitious composition comprises at least one polymer as a salt thereof having the form of a copolymer of(a) a maleic anhydride half-ester with a compound of the formula IRO(AO).sub.m H (I)where R is a C.sub.1-20 alkyl group, A is a C.sub.2-4 alkylene group and m is an integer from 2-16; and(b) a monomer having the formula IICH.sub.2 .dbd.CHCH.sub.2 -(OA).sub.n OR (II)where n is an integer from 1-90.In a preferred embodiment, there is present a polycarboxylate salt which is at least one polymer or copolymer comprising at least one of the monomers acrylic acid, methacrylic acid, maleic anhydride, maleic acid and maleic acid monoester, polymer and polycarboxylate salt being blended in the proportion of 0.1-10 parts of weight of polymer per part of polycarboxylate salt.Cementitious compositions such as concrete in which such polymeric compositions are included maintain their slump properties.
    Type: Grant
    Filed: November 4, 1991
    Date of Patent: November 10, 1992
    Assignee: Sandoz Ltd.
    Inventors: Hideo Ogawa, Yoshio Tanaka, Tadashi Tsuchitani
  • Patent number: 5158996
    Abstract: The invention relates to organic copolymers in free acid or salt form with recurring units of formula I ##STR1## in which R is an alkylene radical with 2 to 6 carbon atoms,R.sub.1 is a C.sub.1-20 alkyl-, cycloalkyl- or phenyl group,x, y and z are numbers from 0.01 to 100,m is a number from 1 to 100 andn is a number from 10 to 100,with the provisos, thati) the ratio of x to (y+z) is from 1:10 to 10:1 inclusive,ii) the ratio of z to y is from 3:1 to 100:1, andiii) m+n=15-100.The products of the invention are excellent superplasticizers and can be used as additives to cementitious mixes.
    Type: Grant
    Filed: September 27, 1990
    Date of Patent: October 27, 1992
    Assignee: Sandoz Ltd.
    Inventor: Salvatore Valenti
  • Patent number: 5153241
    Abstract: Composite materials based celluyloses grafted with titanium coupling agents reinforce polymeric resins, cement and gypsum. Processes for preparing said composites are disclosed.
    Type: Grant
    Filed: August 8, 1988
    Date of Patent: October 6, 1992
    Inventor: Alphons D. Beshay
  • Patent number: 5147904
    Abstract: Open-pored moldings containing the product of the foaming and setting of (a) an aluminum fluorosilicate glass, (b) at least one polycarboxylic acid with an average molecular weight of >500, (c) a foaming agent, other than carbonates and/or hydrogen-carbonates, (d) optionally a chelating agent and (e) water, are suitable in particular as bone substitute material.Production is carried out by homogeneously mixing (a), (b), (c), optionally (d), and (e), then foaming, shaping and setting.
    Type: Grant
    Filed: August 22, 1990
    Date of Patent: September 15, 1992
    Assignee: Thera Patent GmbH & Co. KG
    Inventors: Peter Jochum, Oswald Gasser, Manfred Holupirek, Erich Wanek, Rainer Guggenberger, Klaus-Peter Stefan, Klaus Ellrich
  • Patent number: 5143952
    Abstract: A composite, molded article is prepared by forming a W/O emulsion containing a vinyl monomer, water, a cement, a polymerization initiator and an emulsifier, followed by molding and hardening. The emulsifier includes a neutralization product of an amide-containing amine with an organic sulfonic acid or an organic acid phosphate. The amide-containing amine is a condensation product obtained by reacting a fatty acid having 8-24 carbon atoms with an amino compound having the general formula (I) or (II):R.sup.1 R.sup.2 N[(CH.sub.2).sub.x --NH].sub.y H (I)R.sup.3 N[(CH.sub.2).sub.z NH.sub.2 ].sub.2 (II)wherein R.sup.1, R.sup.2, R.sup.3 each represent, independently from each other, hydrogen, an alkyl group haaving 1-24 carbon atoms or an alkenyl group having 1-24 carbon atoms, x is an integer of 1-4, y is an integer of 1-8 and z is an integer of 1-4.
    Type: Grant
    Filed: September 27, 1991
    Date of Patent: September 1, 1992
    Assignees: Okura Industrial Co., Ltd., Dai-Ichi Kogyo Seiyaku Co., Ltd.
    Inventors: Takasi Saheki, Hideaki Matsuda, Kinya Yokota, Tominobu Mayuzumi
  • Patent number: 5137945
    Abstract: A cement dispersant having as a main component thereof at least one polymer selected from the group consisting of polymers obtained from (A) 0.1 to 100 mol % of a sulfonic acid type monomer represented by the formula I: ##STR1## wherein R stands for hydrogen atom or methyl group, X stands for hydrogen atom, a monovalent metallic atom, a divalent metallic atom, ammonium group, or an organic amine group, A and B independently stand for an alkylene group of 2 to 4 carbon atoms, m stands for 0 or an integer of the value of 1 to 100, and the alkylene oxide group of 2 to 4 carbon atoms in the portion, (AO).sub.m may be bound in any desired sequence, and (B) 99.9 to 0 mol % of olther monomer copolymerizable with said sulfonic acid type monomer, and polymers obtained by neutralizing said polymers with an alkaline substance, a cement composition containing the dispersant and a method for dispersing a cement.
    Type: Grant
    Filed: May 2, 1990
    Date of Patent: August 11, 1992
    Assignee: Nippon Shokubai Kagaku Kogyo Co., Ltd.
    Inventors: Tsuneo Tsubakimoto, Hideyuki Tahara, Hiroya Kobayashi, Tsuyoshi Hirata, Hiroshi Ito
  • Patent number: 5137577
    Abstract: An additive to cement comprises a granular zinc salt of a copolymer of an olefin having 2 to 8 carbon atoms and an ethylenically unsaturated dicarboxylic anhydride, prepared by reacting the powder of the copolymer with powder of zinc oxide or zinc hydroxide in the presence of water.
    Type: Grant
    Filed: March 26, 1991
    Date of Patent: August 11, 1992
    Assignee: Kao Corporation
    Inventors: Masanori Iizuka, Tatsuya Mizunuma, Fuzio Yamato, Toshiharu Kojima, Akitoshi Tuji
  • Patent number: 5118751
    Abstract: The invention relates to a redispersible powder composition comprisinga) a base polymer from the group comprising vinyl ester polymers, styrene polymers, acrylate polymers and vinyl chloride polymers,b) 2 to 15% by weight, relative to the base polymer, of polyvinyl alcohol having a degree of hydrolysis of 85 to 94 mol % and a Hoppler viscosity of 2 to 25 mPa.multidot.s,c) 3 to 30% by weight, relative to the total weight of polymer components, of a fine antiblocking agent,d) 0.1 to 2% by weight, relative to the base polymer, of antifoams, which containse) 1 to 8% by weight, relative to the base polymer, of a fully hydrolyzed 1-alkylvinyl ester/vinyl ester copolymer having a Hoppler viscosity of 1 to 5 mPa.multidot.s. The redispersible composition according to the invention is suitable in particular for use in flowing, hydraulically setting leveling compounds.
    Type: Grant
    Filed: August 23, 1991
    Date of Patent: June 2, 1992
    Assignee: Wacker Chemie GmbH
    Inventors: Joachim Schulze, Hardy Herold, Juergen Hinterwinkler
  • Patent number: 5112603
    Abstract: The present invention relates to compositions useful as thickening agents for aqueous systems. More particularly, it relates to compositions comprising smectite clays and cationic polymers.
    Type: Grant
    Filed: December 30, 1988
    Date of Patent: May 12, 1992
    Assignee: Miranol Inc.
    Inventors: Richard J. Nadolsky, Joseph M. Laryea
  • Patent number: 5106520
    Abstract: Free flowing, conformable powder-like mix of silica particles and a phase change material (p.c.m.) is disclosed. The silica particles have a critical size of about 7.times.10.sup.-3 to about 7.times.10.sup.-2 microns and the pcm must be added to the silica in an amount of 80 wt. % or less pcm per combined weight of silica and pcm. The powder-like mix can be used in tableware items, medical wraps, tree wraps, garments, quilts and blankets, and in cementitious compositions of the type in which it is beneficial to use a pcm material. The silica-pcm mix can also be admixed with soil to provide a soil warming effect and placed about a tree, flower, or shrub.
    Type: Grant
    Filed: January 9, 1990
    Date of Patent: April 21, 1992
    Assignee: The University of Dayton
    Inventor: Ival O. Salyer
  • Patent number: 5098777
    Abstract: A compressed non-asbestos sheet is formed with a body between starter and finish layers. The body has novaloid and aramid fibers in an amount more than 5% and less than 25% by weight of the total sheet. The body also includes elastomeric binders, fillers and rubber processing chemicals. The starter and finish layers include aramid fibers, elastomeric binders with a release agent, fillers and rubber processing chemicals.
    Type: Grant
    Filed: October 1, 1990
    Date of Patent: March 24, 1992
    Assignee: Durable Canada Ltd.
    Inventor: Vasant M. Koli
  • Patent number: 5092933
    Abstract: Concrete/mortar is manufactured with a small amount of water by using a dry clathrate water mixture. The dry clathrate water is used in a state wherein the water is impregnated into a water absorbent polymer.
    Type: Grant
    Filed: March 18, 1991
    Date of Patent: March 3, 1992
    Assignees: Mitsui Kensetsu Kabushiki Kaisha, Shiiai Kemutekku Kabushiki Kaisha, Oosaka Yuuki Kagaku Kogyo Kabushiki Kaisha
    Inventors: Tadashi Okamoto, Toru Sato, Taiji Kanbayashi, Chuzo Kato
  • Patent number: 5079277
    Abstract: A glass ionomer cement composition comprises poly(vinyl phosphonic acid) dissolved in its own mass of water; and (in treble the total mass of the solution) a powder, being glass or MgO or a cermet. The powder has to be deactivated so that the setting reaction with the acid is not too fast, and this is achieved either by a raised Si:Al ratio or by heat-treating.
    Type: Grant
    Filed: April 27, 1989
    Date of Patent: January 7, 1992
    Assignee: National Research Development Corporation
    Inventors: Alan D. Wilson, John Ellis
  • Patent number: 5075358
    Abstract: A latex modified mortar or concrete material in which a polymeric or latex binding material is combined with a low shrinkage (gypsum) cement and fine fillers. Use of the low shrinkage cement and a higher than previously considered functional ratio of latex binding material to low shrinkage cement permits the resulting patching composition to obtain unexpectedly good adhesion, reduced cracking tendencies, dimensional stability, and flexibility required while maintaining enhanced strength properties. The polymeric binding material may be either an elastomeric or a thermoplastic latex.
    Type: Grant
    Filed: January 3, 1990
    Date of Patent: December 24, 1991
    Inventors: Victor Riley, Krishnamurthy Muralidharan
  • Patent number: 5069721
    Abstract: Disclosed is a mortar.concrete composition comprising a polymer emulsion, a portland cement material and an aggregate, which is characterized in that the polymer emulsion is one prepared by neutralizing a seed polymer with an acid or a salt or by quaternizing it with a quaternizing agent, the surfaces of the emulsion grains being thereby highly densely cationated, where the seed polymer is formed by adding a monomer as represented by the following formula (I) or a mixture of the monomer (I) and copolymerizable ethylenic unsaturated monomer(s) to a seed latex of a carboxyl-modified synthetic rubber latex or synthetic resin emulsion and polymerizing them: ##STR1## The polymer of the invention may noticeably reinforce the strength of the shaped product even when the amount of the polymer added is small.
    Type: Grant
    Filed: March 22, 1990
    Date of Patent: December 3, 1991
    Assignee: Mitsui-Cyanamid, Ltd.
    Inventors: Akira Tamura, Naotaka Watanabe, Hitoshi Fujiyoshi, Masako Shirota
  • Patent number: 5051453
    Abstract: Disclosed in a cement composition comprising an unsaturated carboxylic acid polymer and an alkaline earth metal aluminofluorosilicate glass, wherein the alkaline earth metal aluminofluorosilicate glass comprises (a) 50 to 95% by weight of coarse particles having a spherical shape and an F/Si ratio of at least 0.1 but lower than 0.6 and having a particle size larger than 3 .mu.m but not larger than 50 .mu.m and (b) 5 to 50% by weight of fine particles having an F/Si ratio of 0.6 to 5 and a particle size of up to 3 .mu.m.This cement composition gives a cured body having a good surface gloss and a high strength, and this cement composition has a good flowability and a good workability. Accordingly, the cement composition is valuable as a dental cement composition.
    Type: Grant
    Filed: January 31, 1989
    Date of Patent: September 24, 1991
    Assignee: Tokuyama Soda Kabushiki Kaisha
    Inventors: Minahiro Okabayashi, Hideki Ohno, Koshi Kusumoto
  • Patent number: 5049288
    Abstract: Set retarded cement compositions for cementing across a zone or zones in a well having enhanced compressive strength and rapid gel strength development after placement. The cement compositions are comprised of hydraulic cement, sufficient fresh water to form a pumpable slurry, a set retarder comprising a copolymer of 2-acrylamido, 2-methylpropane sulfonic acid and acrylic acid having a average molecular weight below about 5000 and any other desired additives. Methods of cementing utilizing the cement composition also are provided.
    Type: Grant
    Filed: April 23, 1991
    Date of Patent: September 17, 1991
    Assignee: Halliburton Company
    Inventors: Lance E. Brothers, Donald W. Lindsey, Dralen T. Terry
  • Patent number: 5041475
    Abstract: A shaped article of gypsum possessing heretofore unattainable high strength, a method for the production of the shaped article, and a method for the production of inclusion water indispensable to the hardening by hydration of the production of the shaped article of gypsum are disclosed.
    Type: Grant
    Filed: November 21, 1990
    Date of Patent: August 20, 1991
    Assignee: Osaka Yuki Kagaku Kogyo Kabushiki Kaisha
    Inventors: Taiji Kambayashi, Hideyuki Mekata, Hiroyuki Kataoka, Chuzo Kato
  • Patent number: 5030282
    Abstract: A carbon fiber-reinforced cementitious composite having high strength, which comprises continuous carbon fibers and a cured cement composition, comprising cement particles having an average particle size up to about the average diameter of the carbon fibers, the cured cement composition being substantially interposed between the individual carbon fibers; and a method for producing it.
    Type: Grant
    Filed: July 10, 1989
    Date of Patent: July 9, 1991
    Assignees: Toho Rayon Co., Ltd., Taisei Corporation
    Inventors: Toshikazu Matsuhashi, Kuniomi Suzuki, Kazuhisa Saito, Hiroyasu Ogawa, Masahide Aga, Teruo Yamamiya, Kenji Sugimoto, Yutaka Tsuruta
  • Patent number: 5028341
    Abstract: An additive for well servicing fluids containing a partially hydrolyzed acrylamide for use in downhole environments having a high calcium ion content comprising an alkali metal bicarbonate, a water-soluble carboxylic acid and a copolymer of acrylamide, an acrylic acid and 2-acrylamido-2-methylpropanesulfonic acid, the additive being used to formulate aqueous well servicing fluids, particularly drilling fluids, and for a method of treating an aqueous well servicing fluid containing partially hydrolyzed acrylamide to prevent unwanted reactions between calcium ions and the partially hydrolyzed polyacrylamide.
    Type: Grant
    Filed: December 31, 1990
    Date of Patent: July 2, 1991
    Assignee: Baroid Technology, Inc.
    Inventor: Andrew Liao
  • Patent number: 5025040
    Abstract: A cementing composition useful in cementing oil, gas and water wells, comprising water, hydraulic cement and an effective amount of water soluble fluid loss additive comprised of a blend of a copolymer of acrylamide/vinyl imidazole in a weight percent ratio of from about 95:5 to 5:95, said copolymer having a molecular weight range of from about 100,000 to 3,000,000, and a terpolymer of acrylamide/acrylamidomethylpropane sulfonic acid sodium salt/vinyl imidazole in a weight percent ratio of 60:20:20, said terpolymer having a molecular weight range of from about 100,000 to 3,000,000. The blend is comprised of a weight percent ratio of copolymer to terpolymer in the range of 20:80 to 80:20. The composition can also optionally include a dispersant such as sodium or potassium salts or a sulfonated naphthalene formaldehyde condensate.
    Type: Grant
    Filed: June 11, 1990
    Date of Patent: June 18, 1991
    Assignee: BASF
    Inventors: Stefano C. Crema, Clare H. Kucera, Gerd Konrad, Heinrich Hartmann
  • Patent number: 5021093
    Abstract: Composite materials based on cement or gypsum materials reinforced by mixing with cellulosic fibers grafted with silylating agents. Processes for preparing these reinforced composites are also disclosed.
    Type: Grant
    Filed: June 9, 1988
    Date of Patent: June 4, 1991
    Inventor: Alphons D. Beshay
  • Patent number: 4970246
    Abstract: A slurry having an aqueous liquid and dispersed solids may be vacuum filled into an acetylene storage container and indurated to yield a lime-silica matrix with a porosity between about 88 percent to 92 percent. The matrix includes a mixture of aromatic polyamide fibers and oxidized polyacrylonitrile fibers. At least some of these fibers are fibrillated and the fibers are in an amount of about 3.8 wt. % to about 12 wt. % matrix.
    Type: Grant
    Filed: November 1, 1988
    Date of Patent: November 13, 1990
    Assignee: Coyne Cylinder Company
    Inventors: Paul S. O'Neal, Michael C. Camp
  • Patent number: 4968734
    Abstract: The present invention is directed to a copolymer of acrylic or methacrylic acid and a hydroxyalkyl acrylate or methacrylate, to cement admixture compositions containing said polymer and to hydraulic cement compositions containing said admixture. The copolymer is composed of from 20 to 40 mole percent of an alkali metal salt of acrylic or methacrylic acid either as the free acid or as their alkali or alkaline earth metal salt and from 60 to 80 mole percent of hydroxyalkyl acrylate or methacrylate; said polymer having a weight average molecular weight of at least 70,000.
    Type: Grant
    Filed: August 20, 1987
    Date of Patent: November 6, 1990
    Assignee: W. R. Grace & Co.-Conn.
    Inventors: James M. Gaidis, Joseph M. Daly
  • Patent number: 4964913
    Abstract: Hydraulic substances reinforced with high tenacity acrylonitrile (AN) fibers and a process for production thereof are provided.The high tenacity AN fibers comprise AN polymers composed mainly of AN having an intrinsic viscosity of at least 2.5 and have an X-ray crystalline orientation of at least 93%, a tensile strength of at least 10 g/d, an initial modulus of at least 180 g/d, a contrast glossiness of at least 10% and a smooth surface.Hydraulic substances reinforced with the high tenacity AN fiber are produced by uniformly dispersing in water, a hydraulic substance and the high tenacity AN fibers having applied thereto nonionic or cationic high molecular flocculants, adding anionic high molecular flocculants thereto to flocculate and adsorb cement particles onto the surface of the AN fibers and, subjecting the resulting slurry to paper-making.
    Type: Grant
    Filed: April 14, 1989
    Date of Patent: October 23, 1990
    Assignee: Toray Industries, Inc.
    Inventors: Takashi Takada, Kenichi Hirao
  • Patent number: 4963190
    Abstract: An aqueous dispersant composition for cement comprises 100 parts by weight of a copolymer of an olefin having 2 to 8 carbon atoms and an ethylenically unsaturated dicarboxylic anhydride, the copolymer being in the form of fine particles having an average size of 0.1 to 20 micrometers, 15 to 300 parts by weight, of zinc, as zinc oxide or zinc hydroxide, and water, the composition being adjusted to have a pH value of 6 to 12.
    Type: Grant
    Filed: March 17, 1989
    Date of Patent: October 16, 1990
    Assignee: Kao Corporation
    Inventors: Tatsuya Mizunuma, Ryoichi Tamaki, Shoji Kanzaki, Yoshiaki Tanisho, Fuzio Yamato
  • Patent number: 4956013
    Abstract: The present invention provides a refractory coating composition comprising:(i) 100 parts by weight of a hydraulic cement,(ii) 3 to 50 parts by weight of a re-emulsion type powdery resin,(iii) 50 to 600 parts by weight of a mixture of 15 to 85% by weight of aluminum hydroxide powder and 85 to 15% by weight of carbonate decomposable at a temperature of 300.degree. to 1000.degree. C., and(iv) 20 to 300 parts by weight of a lightweight aggregate having open cells at a ratio of at least 50% based on the total cells.
    Type: Grant
    Filed: June 7, 1988
    Date of Patent: September 11, 1990
    Assignee: Shikoku Kaken Kogyo Co., Ltd.
    Inventor: Hideo Motoki
  • Patent number: 4956403
    Abstract: A pressure water absorption inhibitor for lightweight aggregates which comprises an aqueous dispersion of a polymeric substance having a viscosity which permits the aqueous dispersion to enter the fine pores in the surface layer of a lightweight aggregate and which dispersion is capable of being thickened to a viscosity of not less than 50 times the viscosity before thickening by elevation of the pH.
    Type: Grant
    Filed: November 2, 1987
    Date of Patent: September 11, 1990
    Assignees: Takenaka Komuten Co., Ltd., Sanyo Chemical Industries, Ltd.
    Inventors: Toshio Yonezawa, Takashi Iwashimizu, Yasuhiko Yoshioka, Koichi Ito, Kunio Sakaue, Tetsuo Nakase
  • Patent number: 4946904
    Abstract: An additive for cement comprising, as the effective component, a copolymer of a polyoxyalkylene derivative represented by following formula (1) and maleic anhydride, a hydrolyzed product of the copolymer, or a salt of the hydrolyzed product; ##STR1## wherein Z represents a residue of a compound having a hydroxy group, said compound having from 2 to 8 carbon atoms; AO represents an oxyalkylene group having from 2 to 18 carbon atoms; X represents an unsaturated hydrocarbon group having from 2 to 5 carbon atoms or an unsaturated acyl group having from 2 to 5 carbon atoms; R represents hydrocarbon group having from 1 to 40 carbon atoms; a represents 0 to 1,000; b represents 0 to 1,000; c represents 0 to 1,000; l represents 1 to 7, m represents 0 to 2; and n represents 1 to 7; l+m+n=2 to 8, m/(l+n).ltoreq.1/2, and al+bm+cn.gtoreq.1.
    Type: Grant
    Filed: May 13, 1988
    Date of Patent: August 7, 1990
    Assignee: Nippon Oil and Fats Co., Ltd.
    Inventors: Shin-ichi Akimoto, Susumu Honda, Tohru Yasukohchi
  • Patent number: 4946505
    Abstract: Coloring materials used in a process of dyeing concrete consist of pigment granules other than compacted or briquetted granules. The granules consist of one or more pigments, one or more binders for promoting the dispersing of the pigments in the concrete, and optional other additives. Such pigment granules, particularly bead granules, will easily dissolve in the concrete mixer and will be homogeneously dispersed in the concrete.
    Type: Grant
    Filed: July 17, 1989
    Date of Patent: August 7, 1990
    Assignee: Chemische Werke Brockhues AG
    Inventor: Axel E. Jungk
  • Patent number: 4946725
    Abstract: A method of constructing an equipment pad and the resultant pad is disclosed. The method comprises the steps of providing a mold with fiberglass material laminated to the interior walls of the mold, providing a layer of polymer concrete in the base of the mold, covering the layer of concrete with a sheet of fiberglass material, covering the fiberglass material with an additional layer of polymer concrete, placing honeycomb material on the additional layer of concrete, filling selected cells of said honeycomb material with a polymer concrete, laminating a fiberglass sheet to the upper surface of the honeycomb material and sealing the upper sheet of fiberglass to the fiberglass laminated to the walls of the mold. The finished pad is then removed from the mold and inverted. If desired, an opening may be molded into the pad.
    Type: Grant
    Filed: August 4, 1988
    Date of Patent: August 7, 1990
    Assignee: Homac Mfg. Company
    Inventor: Samuel P. Harlan
  • Patent number: 4946506
    Abstract: An additive combination for hydraulic cement compositions is provided which advantageously provides corrosion inhibition and set acceleration, in combination with a high level of fluidity and retention of fluidity over a desired period of time. The cement additive combination comprises an alkali or alkaline earth metal nitrite and a graft copolymer plasticizer comprising a polyether backbone and side chain polymers formed by polymerization of ethylenically unsaturated monomers.Fluid hydraulic cement compositions are further provided comprising these additive combinations.
    Type: Grant
    Filed: September 7, 1989
    Date of Patent: August 7, 1990
    Assignee: W.R. Grace & Co.-Conn.
    Inventors: Ahmad Arfaei, Neal S. Berke, Michael P. Dallaire, Maria Hicks
  • Patent number: 4941536
    Abstract: Set retarded cement compositions for cementing across a zone or zones in a well having enhanced compressive strength and rapid gel strength development after placement. The cement compositions are comprised of hydraulic cement, sufficient fresh water to form a pumpable slurry, a set retarder comprising a copolymer of 2-acrylamido, 2-methylpropane sulfonic acid and acrylic acid having an average molecular weight below about 5000 and any other desired additives. Methods of cementing utilizing the cement composition also are provided.
    Type: Grant
    Filed: June 27, 1989
    Date of Patent: July 17, 1990
    Assignee: Halliburton Company
    Inventors: Lance E. Brothers, Donald W. Lindsey, Dralen T. Terry
  • Patent number: 4939191
    Abstract: A cured cement article containing therein an organic polymer treated with an isocyanate compound has a high flexural strength and high water resistance. The cured cement can be prepared by impregnating a cured cement article containing therein a water-soluble polymer or a water-dispersible polymer with an isocyanate compound.
    Type: Grant
    Filed: February 17, 1988
    Date of Patent: July 3, 1990
    Assignee: UBE Industries, Ltd.
    Inventors: Nobuhiro Kataoka, Hideaki Igarashi, Masanori Ohshima
  • Patent number: 4938803
    Abstract: A vinyl grafted lignite fluid loss additive comprising a lignite grafted with at least one vinyl monomer selected from the group consisting of: dimethylaminopropyl methacrylamide, methacrylamido propyltrimethyl ammonium chloride, N-vinylformamide, N-vinylacetamide, diallyl dimethyl ammonium chloride, and diallylamine. The vinyl monomer may also be blended with at least one co-monomer. Preferred co-monomers are: 2-acrylamido-2-methylpropanesulfonic acid, dimethylacrylamide, acrylamide, vinylpyrrolidone, vinylacetate, acrylonitrile, dimethylaminoethyl methacrylate, styrenesulfonate, vinylsulfonate, dimethylaminoethyl methacrylate methyl chloride quaternary, acrylic acid and its salts.
    Type: Grant
    Filed: July 5, 1989
    Date of Patent: July 3, 1990
    Assignee: Nalco Chemical Company
    Inventors: David A. Huddleston, Charles D. Williamson
  • Patent number: 4927866
    Abstract: A shapable material is disclosed which contains:(a) an aluminum fluorosilicate glass;(b) at least one polycarboxylic acid having an average molecular weight greater than 500;(c) a carbonate and/or hydrogen carbonate in an amount of at least 0.1% by weight, based on (a);(d) optionally a chelating agent; and(e) optionally water.Said material is especially suited as bone replacement material and can be shaped into porous articles.
    Type: Grant
    Filed: February 28, 1989
    Date of Patent: May 22, 1990
    Assignee: ESPE Stiftung & Co. Produktions- und Vertriebs KG
    Inventors: Robert Purrmann, Rainer Guggenberger, Gunter Pieper
  • Patent number: 4888059
    Abstract: A cement dispersing agent comprising as an essential component a copolymer obtained by copolymerizing (a) 40 to 90% by weight, calculated as an alpha,beta-ethylenically unsaturated carboxylic acid, of the alpha,beta-ethylenically unsaturated carboxylic acid and/or its salt and (b) 60 to 10% by weight of an acrylic ester and/or a methacrylic ester of an alkyl alcohol having 1 to 4 carbon atoms, or a copolymer obtained by copolymerizing (a) 40 to 89% by weight, calculated as an alpha,beta-ethylenically unsaturated carboxylic acid, of the alpha,beta-ethylenically unsaturated carboxylic acid and/or its salt, (b) 51 to 10% by weight of an acrylic ester and/or a methacrylic ester of an alkyl alcohol having 1 to 4 carbon atoms and (c) 1 to 9% by weight of the other copolymerizable unsaturated monomer.
    Type: Grant
    Filed: December 22, 1987
    Date of Patent: December 19, 1989
    Assignee: Dainippon Ink and Chemicals, Inc.
    Inventors: Kouichi Yamaguchi, Tokio Goto
  • Patent number: 4870120
    Abstract: A cement dispersant having as a main component thereof at least one polymer selected from the group consisting of polymers obtained from (A) 0.1 to 100 mol % of a sulfonic acid type monomer represented by the formula I: ##STR1## wherein R stands for hydrogen atom or methyl group, X stands for hydrogen atom, a monovalent metallic atom, a divalent metallic atom, ammonium group, or an organic amine group, A and B independently stand for an alkylene group of 2 to 4 carbon atoms, m stands for 0 or an integer of the value of 1 to 100, and the alkylene oxide group of 2 to 4 carbon atoms in the portion, (AO).sub.m may be bound in any desired sequence, and (B) 99.9 to 0 mol % of other monomer copolymerizable with said sulfonic acid type monomer, and polymers obtained by neutralizing said polymers with an alkaline substance, a cement composition containing the dispersant and a method for dispersing a cement.
    Type: Grant
    Filed: February 12, 1988
    Date of Patent: September 26, 1989
    Assignee: Nippon Shokubai Kagaku Co., Ltd.
    Inventors: Tsuneo Tsubakimoto, Hideyuki Tahara, Hiroya Kobayashi, Tsuyoshi Hirata, Hiroshi Ito
  • Patent number: 4866109
    Abstract: The invention is specifically concerned with an improvement in the process of manufacturing reinforced materials. The reinforced materials are conceived to include a wide variety of materials, the most notable being high density compressed gaskets. The improvement comprises mixing a cut solid (generally a cut fiber) with a body material to produce the reinforced materials. The solid is cut into particulates of highly variable size, the range in the size of the particulates being adjusted to optimize the characteristics of the resulting reinforced material. The cut solid is produced utilizing comminuting machines previously used for the recycle of waste products.
    Type: Grant
    Filed: October 15, 1984
    Date of Patent: September 12, 1989
    Assignee: BASF Corporation
    Inventors: Billy B. Hibbard, Joe A. Mann, Frans P. P. Koeleveld, Agnes K. Potepan, Richard E. White, Barry T. Knight, Howard H. Bryant
  • Patent number: 4851456
    Abstract: A paste-like topcoat composition for surfaces comprising a dry mix material of sand, cement and a resinous binder. A liquid mix material comprising water, vinyl acrylates and a solvent for at least one of resinous binder and vinyl acrylates and/or methacrylates is mixed with the dry mix material to provide a topcoat composition that is particularly useful for asphalt surfaces. Other ingredients such as defoaming agents, preservatives, and fungicides can be included in the topcoat composition. A method for construction a topcoat is also provided.
    Type: Grant
    Filed: February 3, 1988
    Date of Patent: July 25, 1989
    Assignee: Neverwear Corporation
    Inventor: Doyle E. Dean
  • Patent number: 4846889
    Abstract: This invention is a polymer blend useful in thin-bed mortar compositions comprising a water-soluble cellulose ether and a water-insoluble, but water-dispersible, polymer. The water insoluble, but water-dispersible polymer can include an unneutralized polyacrylic acid that is lightly crosslinked or methylcellulose with a viscosity from about 50 cps to about 150,000 cps, provided the polymeric blend containing methylcellulose is employed in a medium that has a pH of about 12 or greater, although a pH of less than 12 is workable, but is dependent upon the methoxyl content of the methylcellulose. The polymeric blend extends the working time of the composition in which it is employed and because the blend has sag binding characteristics, it also functions as a sag resistance aid.
    Type: Grant
    Filed: February 2, 1988
    Date of Patent: July 11, 1989
    Assignee: The Dow Chemical Company
    Inventor: Wilfred C. Meyer
  • Patent number: 4842650
    Abstract: Various improvements for polymer modified cementitious compositions are disclosed. A dry mix for making a polymer modified cementitious composition especially useful as a stucco material, which includes a dry, redispersible, non-reemulsifiable polymer at a polymer-cement ratio of between about 0.04:1 to about 0.15:1, is disclosed. Also, the use of sodium acyl (coco) isethionate as a superior wetting agent in polymer modified cementitious composition is disclosed. In addition, the use of non-bridging, plastic fibers for use in pumpable cementitious compositions is disclosed.
    Type: Grant
    Filed: April 11, 1986
    Date of Patent: June 27, 1989
    Assignee: Sencon Systems Incorporated
    Inventor: Wayne J. Blounts
  • Patent number: 4840672
    Abstract: Lightweight insulating boards in accordance with the present invention comprise Portland cement, fibers and fillers including:(a) 50-75% by weight of cement,(b) 0-5% by weight of cellulose fibers,(c) 0.5-4% by weight of alkali-resistant fiber material,(d) 5-20% by weight of mica,(e) 5-20% by weight of light filler and(f) 8-25% by weight of hydrated lime.They are shaped into boards from a suspension and are set at least 15 days, and preferably 28 days. The insulating boards of the present invention meet all of the requirements set for such materials regarding flexural strength, incombustibility, and the like.
    Type: Grant
    Filed: March 12, 1987
    Date of Patent: June 20, 1989
    Assignee: Redco N.V.
    Inventor: Emile Baes
  • Patent number: 4828616
    Abstract: An aqueous surface treatment composition for forming a hydrophilic coating comprising: (a) alkali metal silicate, (b) aminoalcohol, and (c) a water-soluble resin selected from the group consisting of a water-soluble nylon, a natural polysaccharide and a water-soluble, natural protein, and/or a water-soluble silane coupling agent. This aqueous surface treatment composition is used to form a hydrophilic coating on an aluminum surface having a corrosion-resistant coating layer. The hydrophilic coating prepared from this composition has good hydrophilic nature and corrosion resistance with substantially no unacceptable odor.
    Type: Grant
    Filed: August 28, 1987
    Date of Patent: May 9, 1989
    Assignee: Nippon Paint Co., Ltd.
    Inventor: Katsuyoshi Yamasoe
  • Patent number: 4828883
    Abstract: A method and material for protection from airborne asbestos and other particular contamination is disclosed that is useful for protecting the environment and individuals working therein as occurs at a job site when friable or cementitious asbestos containing coatings are being removed from existing structures. The method includes application of a combined wetting and encapsulation formula which bonds the asbestos fibers to materials in the formula so as to convert friable asbestos to non-friable asbestos and a hardening procedure and formula which places the bonded non-friable asbestos in a hardened mass so that it may be safely disposed of.
    Type: Grant
    Filed: April 22, 1987
    Date of Patent: May 9, 1989
    Assignee: Allied Gator, Inc.
    Inventor: John R. Ramun