With Unsaturated Carboxylic Acid Or Ester Monomer Patents (Class 524/831)
  • Patent number: 5037863
    Abstract: Functionalized polymer microparticles having particle diameters of from about 200 to about 4000.ANG. are prepared and are useful in facilitating a variety of flocculation and thickening of dispersions of suspended solids applications.
    Type: Grant
    Filed: June 13, 1990
    Date of Patent: August 6, 1991
    Inventors: Joseph J. Kozakiewicz, David L. Dauplaise, Joseph M. Schmitt, Sun-Yi Huang
  • Patent number: 5008329
    Abstract: A process for producing an aqueous copolymer dispersion is disclosed, which comprises emulsion polymerizing 100 parts by weight of a vinyl monomer mixture comprising (A) from 60 to 99.8% by weight of an acrylic ester of an aliphatic saturated alcohol having from 4 to 8 carbon atoms, (B) from 0.2 to 10% by weight of a monomer selected from the group consisting of an .alpha.,.beta.-unsaturated carboxylic acid, an .alpha.,.beta.-unsaturated carboxylic acid anhydride, a 2-hydroxyalkyl acrylate, a 2-hydroxyalkyl methacrylate, acrylamide, methacrylamide, methylolacrylamide, and methylolmethacrylamide, and (C) up to 30% by weight of a vinyl monomer other than the monomers (A) and (B) in the presence of from 0.01 to 10 parts by weight of a compound having an allyl hydrogen atom, with a total amount of the monomers (A), (B) and (C) being 100% by weight.
    Type: Grant
    Filed: October 10, 1989
    Date of Patent: April 16, 1991
    Assignee: Mitsubishi Yuka Badische Co., Ltd.
    Inventors: Tadashi Abe, Masahiro Aoki, Tsunenori Takahashi, Takeshi Awata
  • Patent number: 4956400
    Abstract: Functionalized polymer microparticles having particle diameters of from about 200 to about 4000 .ANG. are prepared and are useful in facilitating a variety of flocculation and thickening of dispersions of suspended solids applications.
    Type: Grant
    Filed: October 30, 1989
    Date of Patent: September 11, 1990
    Assignee: American Cyanamid Company
    Inventors: Joseph J. Kozakiewicz, David L. Dauplaise
  • Patent number: 4956399
    Abstract: Mannich (alk)acrylamide microparticles are produced at high solids contents without a significant increase in bulk viscosity by inverse microemulsion polymerization and provide superior dewatering characteristics.
    Type: Grant
    Filed: October 30, 1989
    Date of Patent: September 11, 1990
    Assignee: American Cyanamid Company
    Inventors: Joseph J. Kozakiewicz, Sun-Yi Huang
  • Patent number: 4954538
    Abstract: Compositions comprising microparticles of a cross-linkable, glyoxalated (meth) acrylamide containing, polymeric material are disclosed. They are prepared using inverse microemulsion polymerization techniques and are useful as wet- and dry-strength agents in paper production.
    Type: Grant
    Filed: December 19, 1988
    Date of Patent: September 4, 1990
    Assignee: American Cyanamid Company
    Inventors: David L. Dauplaise, Joseph J. Kozakiewicz, Joseph M. Schmitt
  • Patent number: 4943612
    Abstract: An ultra-fine particulated polymer latex having an average particle size of 100 nm or less, a crosslinked structure and a glass transition temperature lower than a value calculated by a weight fraction method.
    Type: Grant
    Filed: December 3, 1987
    Date of Patent: July 24, 1990
    Assignee: Lion Corporation
    Inventors: Hiroshi Morita, Eiichi Hirota, Yasuo Ishizaki
  • Patent number: 4937282
    Abstract: Aqueous dispersions of copolymers of(a) from 70 to 85% by weight of nontertiary butyl (meth)acrylates,(b) from 8 to 27.2% by weight of (meth)acrylates (A) whose homopolymers have a glass transition temperature greater than that of the polybutyl (meth)acrylate up to 0.degree. C. and (meth)acrylates (B) whose homopolymers have a glass transition temperature below that of the polybutyl (meth)acrylate, the weight ratio of the (meth)acrylates (A) to the (meth)acrylates (B) being from 3:1 to 1:3,(c) from 2 to 15% by weight of methyl methacrylate, styrene and/or acrylonitrile and(d) 0.8 to 5% by weight of monoolefinically unsaturated mono- and/or dicarboxylic acids of 3 to 5 carbon atoms and/or their amides which are unsubstituted or substituted at the nitrogen atoms by alkyl and/or alkylol radicals of 1 to 4 carbon atoms and/or hydroxyalkyl (meth)acrylates where the alkyl groups are of 2 to 5 carbon atoms,are used for coating sheet-like substrates.
    Type: Grant
    Filed: June 1, 1989
    Date of Patent: June 26, 1990
    Assignee: BASF Aktiengesellschaft
    Inventors: Peter Pfoehler, Hermann Seyffer, Juergen Vietmeter, Johannes Tuerk, Wolfgang Druschke, Klaus Schagerer
  • Patent number: 4929668
    Abstract: Aqueous synthetic dispersions based on copolymers of acryl polymers and/or vinyl polymers containing both hydroxylalkyl(meth)acrylate monomers and etherified N-alkylol(meth)acrylamide monomers. These dispersions are suitable as bonding agents for the production of glossy and solvent-resistant, thermosetting coating materials with good adhesion.
    Type: Grant
    Filed: July 21, 1988
    Date of Patent: May 29, 1990
    Assignee: Deutsche Texaco Aktiengesellschaft
    Inventors: Winfried Zeibig, Heinrich Huskes
  • Patent number: 4925908
    Abstract: A removable pressure sensitive adhesive composition comprises an acrylic-based emulsion polymer having a gel content of from about 70 to about 90% comprises about 90 to 99.5 parts alkyl acrylate monomers, up to about 2 parts polar monomers and up to about one part of a multifunctional acrylate monomer.
    Type: Grant
    Filed: December 11, 1987
    Date of Patent: May 15, 1990
    Assignee: Avery International Corporation
    Inventors: Margaret Bernard, Stansliv Berman
  • Patent number: 4918139
    Abstract: These aqueous dispersions contain a copolymerizate containing 90 to 99% by weight of repeating units resulting from the polymerization of a mixture of monomers (a) based on 0.1 to 10% by weight of alpha,beta-ethylenic mono- and/or di-carboxylic C.sub.3 -C.sub.5 acid and/or their amides, 0 to 10% by weight of styrene and/or acrylonitrile, the remainder of the esters of (meth)acrylic acid with C.sub.1 -C.sub.12 alkanols; and 10 to 1% by weight of repeating units of general formula (I) ##STR1## where R=H or --CH.sub.3, R.sub.1 =H or C.sub.1 -C.sub.4 alkyl and R.sub.2 and R.sub.3 =C.sub.1 -C.sub.8 alkyl or a --CH.sub.2 --CR.sub.4 R.sub.5 --(CH.sub.2).sub.n --group in which n=0 or 1 and R.sub.4 and R.sub.5 =H or --CH.sub.3.
    Type: Grant
    Filed: April 3, 1989
    Date of Patent: April 17, 1990
    Assignee: Societe Francaise Hoechst of Tour Roussel-Hoechst
    Inventors: Fernand Cuirassier, Didier Wilheim, Alain Blanc
  • Patent number: 4908403
    Abstract: There are disclosed normally tacky, pressure-sensitive adhesive compositions comprising one or more normally tacky polymers having a T.sub.g of about 0.degree. C. or less and containing pendant functional groups attached to the backbone and having the formula: ##STR1## in which R.sub.1 is a divalent organic radical at least 3 atoms in length, and X is organoacyl or cyano, the polymers preferably also being normally tacky when cured. Such polymers have markedly improved cohesive strength (shear holding value) with little or no detriment to adhesive tack or adhesion (peel resistance), and these improvements are realized without the necessity of incorporating cross-linking monomers such as N-methylolamides or other cross-linking agents. Pressure-sensitive adhesive, water-based emulsions containing such polymers and pressure-sensitive adhesive articles comprising a substrate having at least a portion of one surface thereof coated with the adhesive compositions are also disclosed.
    Type: Grant
    Filed: April 7, 1988
    Date of Patent: March 13, 1990
    Assignee: Union Oil of California
    Inventors: Lon T. Spada, Joseph J. Wilczynski
  • Patent number: 4898909
    Abstract: Aqueous dispersions of copolymers having a glass transition temperature of not more than -45.degree. C. and a K value greater than 80 consist of not less than 80% by weight of acrylates of alkanols of 8 to 12 carbon atoms, from 1 to 4% by weight of .alpha.,.beta.- monoolefinically unsaturated carboxylic acids and/or their amide derivatives and from 0.1 to 3% by weight of .alpha.-methylstyrene, and are used for the production of self-adhesive structures having good tack at as low as -40.degree. C.
    Type: Grant
    Filed: December 30, 1987
    Date of Patent: February 6, 1990
    Assignee: BASF Aktiengesellschaft
    Inventors: Juergen Vietmeier, Peter Pfoehler, Gundo Brauch, Wolfgang Druschke, Albrecht Zosel
  • Patent number: 4855343
    Abstract: Sizes for paper are based on finely divided aqueous dispersions of copolymers which are obtainable by copolymerization of from 10 to 56 parts by weight of a monomer mixture of(a) from 20 to 65% by weight of (meth)acrylonitrile,(b) from 35 to 80% by weight of one or more acrylates of monohydric, saturated C.sub.3 -C.sub.8 -alcohols and(c) from 0 to 10% by weight of other ethylenically unsaturated copolymerizable monomers by an emulsion polymerization method in 100 parts by weight of an aqueous solution of from 1.7 to 25% by weight of a degraded starch having a viscosity .eta..sub.i of from 0.12 to 0.50 dl/g, at from 40.degree. to 100.degree. C. in the presence of a peroxide-containing initiator.
    Type: Grant
    Filed: July 16, 1987
    Date of Patent: August 8, 1989
    Assignee: BASF Aktiengesellschaft
    Inventors: Hans-Juergen Degen, Fritz Reichel, Ulrich Riebeling, Lothar Hoehr
  • Patent number: 4845138
    Abstract: Water-in-oil emulsions of water-soluble polymers, i.e. polyacrylamides, which are subject to freeze-thaw degradation are stabilized against repeated freeze-thaw cycles by incorporating specific substituted succinic anhydrides.
    Type: Grant
    Filed: April 15, 1988
    Date of Patent: July 4, 1989
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Peter M. Robinson, Philip D. Raby, Nguyen Van-Det
  • Patent number: 4840991
    Abstract: Aqueous dispersions of partially cross-linked copolymer particles useful in aqueous coating compositions is produced by copolymerizing in aqueous emulsion a mixture of: (A) from 1% to 30% of polyethylenically unsaturated monomer; (B) from 3% to 30% of hydroxy-functional monoethylenically unsaturated monomer; (C) from 0.5% top 10% of a salt-forming monoethylenically unsaturated monomer selected from monoethylenic carboxylic acid monomer and monoethylenic amine monomer; and (D) the balance of the copolymer consisting essentially of copolymerizable monoethylenically unsaturated monomer, preferably nonreactive monomer such as vinyl acetate.
    Type: Grant
    Filed: November 28, 1986
    Date of Patent: June 20, 1989
    Assignee: DeSoto, Inc.
    Inventor: Kazys Sekmakas
  • Patent number: 4839417
    Abstract: Water-soluble polymers or copolymers of acrylic and/or methacrylic acid which contain at least 50 base mole percent of these acids and as end groups hydrogen atoms, hydroxyl groups and moieties of a water-soluble mercaptan or moieties with a sulfoxide group formed therefrom are produced in a readily reproducible manner and free of mercaptan odor in aqueous solution by polymerization with an initiator system consisting of hydrogen peroxide, a water-soluble mercaptan and an iron salt and used as calcium-binding additives or as dispersants in aqueous systems.
    Type: Grant
    Filed: February 8, 1988
    Date of Patent: June 13, 1989
    Assignee: Rohm GmbH
    Inventors: Norbert Suetterlin, Hans-Dieter Blitz, Hans Trabitzsch
  • Patent number: 4837057
    Abstract: Substrates such as metal and plastic can be protected from the environment by employing a high nitrile polymer coating.
    Type: Grant
    Filed: December 23, 1987
    Date of Patent: June 6, 1989
    Assignee: The Standard Oil Company
    Inventors: Rosemary Bartoszek-Loza, Richard J. Butler
  • Patent number: 4835212
    Abstract: Sizing agents for paper are based on finely divided aqueous dispersions of copolymers obtainable by copolymerizing from 40 to 140 parts by weight of a monomer mixture of(a) from 20 to 65% by weight of (meth)acrylonitrile,(b) from 35 to 80% by weight of one or more acrylates of monohydric saturated C.sub.3 -C.sub.8 -alcohols and(c) from 0 to 10% by weight of other ethylenically unsaturated copolymerizable monomers,the weight percentages (a), (b) and (c) always adding up to 100, in the manner of an emulsion polymerization in 100 parts by weight of an aqueous solution containing in solution from 2.7 to 15% by weight of a degraded starch having a viscosity n.sub.i from 0.04 to less than 0.12 dl/g at from 40.degree. to 100.degree. C. in the presence of a peroxide initiator.
    Type: Grant
    Filed: January 20, 1988
    Date of Patent: May 30, 1989
    Assignee: BASF Aktiengesellschaft
    Inventors: Hans-Juergen Degen, Fritz Reichel, Ulrich Riebeling, Lothar Hoehr
  • Patent number: 4824901
    Abstract: Surface treating water-absorbent resins with a polyquaternary amine substantially increases both the rate of water absorption and the quantity of water absorbed and retained by the resin. In addition to improved water absorbing properties, the surface-treated resins maintain the necessary "dry feel" required for most applications.
    Type: Grant
    Filed: April 25, 1988
    Date of Patent: April 25, 1989
    Assignee: American Colloid Company
    Inventors: William Alexander, Mark Anderson, Barbara R. Regan
  • Patent number: 4824894
    Abstract: Polymer water-in-oil emulsions for the production of aqueous flocculants solutions are described in which the oil phase consists entirely or to a large degree of readily biodegradable compounds and these compounds are aliphatic dicarboxylic esters.
    Type: Grant
    Filed: June 30, 1986
    Date of Patent: April 25, 1989
    Assignee: Rohm GmbH Chemische Fabrik
    Inventors: Reiner Schnee, Angelo Scordialo, Jurgen Masanek
  • Patent number: 4794140
    Abstract: Disclosed is a process for preparing relatively low molecular weight, water absorbing, acrylic polymers for use as drilling fluid additives by aqueous polymerization of (A) an acrylic monomer, such as acrylic acid neutralized 0 to 100 mole percent with, for example, ammonia, and/or an alkali such as Na.sub.2 O.sub.3, and/or an amine; with (B) acrylamide in a mole ratio of 70 to 100 mole percent (A) to 30:0 mole percent (B). The molecular weight is limited to 1,000 to 50,000, such as by adding a chain transfer agent to the polymerization mixture, to achieve excellent results as a drilling fluid additive. The monomer, such as partially neutralized acrylic acid, is polymerized in aqueous solution in the presence of a polymerization initiator without external heating while allowing water to evaporate off.
    Type: Grant
    Filed: November 30, 1987
    Date of Patent: December 27, 1988
    Assignee: American Colloid Company
    Inventor: William Alexander
  • Patent number: 4786681
    Abstract: The invention provides a process for producing a water-in-oil emulsion of a water-soluble polyacrylamide or polyacrylic acid polymer or copolymer by the inverse emulsion process characterized in that there is used as the emulsifying agent for the water-in-oil emulsion a water-insoluble, oil-soluble surface active agent of the formula (I):X--Y--Z Ior a functional derivative thereof, wherein X- represents a saturated or unsaturated hydrocarbon chain containing from 30 to 500 carbon atoms, --Y-- represents a succinic anhydride residue carried terminally upon the group X--, and --Z represents a hydrophilic group carried by the group --Y--.
    Type: Grant
    Filed: August 12, 1986
    Date of Patent: November 22, 1988
    Assignee: Imperial Chemical Industries PLC
    Inventors: Alan S. Baker, Stephen J. Butterworth, Ravinder K. Jheeta
  • Patent number: 4785036
    Abstract: Water-in-oil emulsions of water-soluble polymers, i.e. polyacrylamides, which are subject to freeze-thaw degradation are stabilized against repeated freeze-thaw cycles by incorporating specific substituted succinic anhydrides.
    Type: Grant
    Filed: May 27, 1987
    Date of Patent: November 15, 1988
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Peter M. Robinson, Philip D. Raby, Nguyen Van-Det
  • Patent number: 4740546
    Abstract: An aqueous dispersion of a vinyl copolymer resin is prepared by polymerizing 1 to 15 parts by weight of a polyoxyethylene-containing hydrophilic polymerizable vinyl monomer of which polyoxyethylene moiety has an average molecular weight of 2,000 to 10,000, 99 to 85 parts by weight of at least one specific polymerizable vinyl monomer and 0 to 5 parts by weight of alpha, beta-unsaturated carboxylic acids, salts thereof or anhydrides thereof in an organic solvent, and dispersing the resulting vinyl copolymer resin solution in water.
    Type: Grant
    Filed: June 5, 1987
    Date of Patent: April 26, 1988
    Assignee: Dainippon Ink and Chemicals, Inc.
    Inventors: Tsuyoshi Masuda, Zengo Ninomiya
  • Patent number: 4731402
    Abstract: Floor covering adhesives substantially comprisingA. a dispersion of a copolymer of20-60% by weight of vinylidene chloride34-80% by weight of a mixture of 40-80 parts by weight of esters of acrylic acid with C.sub.1 -C.sub.18 -alkanols and 20-60 parts by weight of vinyl esters and0.5 to 6% by weight of .alpha.,62 -monoolefinically unsaturated C.sub.3 -C.sub.5 -mono- and/or dicarboxylic acids and/or amides thereof and/or vinyl sulfonate,B. 30-150 parts by weight (solid), based on 100 parts of a copolymer of A, of tackifying resins from the group of the rosins and derivatives thereof,C. 0-50 parts by weight, based on 100 parts of resin B, of plasticizers and/or liquid resins and also, if desired,D. fillers,are shampoo-resistant and have a high peel strength.
    Type: Grant
    Filed: October 21, 1986
    Date of Patent: March 15, 1988
    Assignee: BASF Aktiengesellschaft
    Inventors: Erich Penzel, Lothar Maempel, Hans J. Neumann, Karl-Clemens Peters, Oral Aydin
  • Patent number: 4709767
    Abstract: Disclosed is a process for preparing relatively low molecular weight, water absorbing, acrylic polymers for use as drilling fluid additives by aqueous polymerization of (A) an acrylic monomer, such as acrylic acid neutralized 0 to 100 mole percent with, for example, ammonia, and/or an alkali such as Na.sub.2 O.sub.3, and/or an amine; with (B) acrylamide in a mole ratio of 70 to 100 mole percent (A) to 30:0 mole percent (B). The molecular weight is limited to 1,000 to 50,000, such as by adding a chain transfer agent to the polymerization mixture, to achieve excellent results as a drilling fluid additive. The monomer, such as partially neutralized acrylic acid, is polymerized in aqueous solution in the presence of a polymerization initiator without external heating while allowing water to evaporate off.
    Type: Grant
    Filed: January 6, 1986
    Date of Patent: December 1, 1987
    Assignee: American Colloid Company
    Inventor: William Alexander
  • Patent number: 4681912
    Abstract: By a new process, inverse microlatices of watersoluble copolymers are prepared by copolymerization within an inverse microemulsion obtained by admixing an aqueous phase containing the hydrosoluble monomers to be copolymerized, an organic phase and a non-ionic surfactant or a mixture of non-ionic surfactants, whose H L B ranges from 8 to 11.The resultant microlatices can be diluted in water so as to form thickened solutions, which can be used to improve the production of hydrocarbons from oil formations, particularly in enhanced recovery methods or methods for preventing water inflows in producing wells.
    Type: Grant
    Filed: June 7, 1985
    Date of Patent: July 21, 1987
    Assignee: Institut Francais du Petrole
    Inventors: Jean-Pierre Durand, Denise Nicolas, Norbert Kohler, Francois Dawans, Francoise Candau
  • Patent number: 4668735
    Abstract: A polymaleate having an average molecular weight of 300 to 5000 is obtained by polymerizing a monoalkali metal maleate or monoammonium maleate at 80.degree. to 180.degree. C. in the presence of a polymerization initiator in an aqueous solvent.
    Type: Grant
    Filed: January 21, 1986
    Date of Patent: May 26, 1987
    Assignee: Kao Corporation
    Inventors: Yasuhisa Fukumoto, Noboru Moriyama
  • Patent number: 4661551
    Abstract: Transparent aqueous organopolysiloxane compositions comprising (A) a salt of a water-soluble organic or inorganic acid and a polysiloxane, which contains in addition to the other siloxane units siloxane units containing SiC-bonded monovalent radicals having basic nitrogen atoms in an amount of at least 0.5 percent by weight, based on the weight of the polysiloxane; and (B) an organic silicon compound having basic nitrogen atoms in an amount of from 0 to 0.5 percent by weight, based on the weight of the organic silicon compound; and when constituent (B) does not contain at least one organic silicon compound having a molecular weight greater than 600 g/mol in an amount of at least 0.1 part per part by weight of contituent (A), then an organic solvent (C) is present in an amount up to about 5 percent by weight based on the weight of constituent (A), in which the organic solvent is soluble in water up to about 1 part by weight per 100 parts by weight of water at 20.degree. C. and 1020 hPa (abs.
    Type: Grant
    Filed: October 16, 1985
    Date of Patent: April 28, 1987
    Assignee: Wacker-Chemie GmbH
    Inventors: Hans Mayer, Bernward Deubzer, Petra Iretzberger, Rudolf Muhlhofer, Hermann Wilhelm
  • Patent number: 4656222
    Abstract: Water soluble salts of acrylic acid are polymerized and co-polymerized with acrylamide by an inverse emulsion polymerization in a water/hydrocarbon emulsion without catalyst to yield high molecular weight polymers.
    Type: Grant
    Filed: May 16, 1985
    Date of Patent: April 7, 1987
    Assignee: Celanese Corporation
    Inventor: Charles A. DeFazio
  • Patent number: 4645568
    Abstract: Concentrated, stable water-in-oil emulsions of water-soluble or water-swellable polymers are prepared by polymerization of one or more water-soluble ethylenically unsaturated monomers in a water-in-oil emulsion and removal of water from the water-in-oil polymer emulsion by azeotropic distillation, by a method in which superheated vapor of an inert organic solvent which is immiscible with water is passed into the water-in-oil polymer emulsion. Using the process, it is also possible to concentrate emulsions which tend to coagulate or water-in-oil emulsions which are sensitive to shearing, without the polymers losing their effectiveness.
    Type: Grant
    Filed: July 11, 1985
    Date of Patent: February 24, 1987
    Assignee: BASF Aktiengesellschaft
    Inventors: Armin Kurps, Hermann Fischer, Jurgen Hartmann, Heinrich Hartmann
  • Patent number: 4617230
    Abstract: A nonwoven fabric repellent to body fluids and having reduced odor on sterilization by irradiation or steam is made by bonding nonwoven fibers with a saturated latex, forming said nonwoven fabric, and sterilizing said fabric, said latex is prepared by polymerizing, in the presence of 0.1 to 2 weight parts of a free radical initiator and a sufficient amount of a nonionic or anionic emulsifier, 65 to 85 weight parts of a soft hydrophobic monomer having Tg of -80.degree. C. to -20.degree. C., 10 to 30 weight parts of a hard hydrophobic acrylate monomer having Tg of +40.degree. C. to +120.degree. C., 0.1 to 5 weight parts of an unsaturated carboxylic acid containing 3 to 6 carbon atoms, and 0.1 to 5 weight parts of N-alkylol acrylamide or methacrylamide containing 1 to 10 carbon atoms, said latex has post-added and admixed therein 0.01 to 5 weight parts of an odor inhibition agent selected from amine-type antioxidants and hindered phenols that function to reduce odor of said fabric on sterilization thereof.
    Type: Grant
    Filed: January 21, 1986
    Date of Patent: October 14, 1986
    Assignee: The B. F. Goodrich Company
    Inventors: Pravinchandra K. Shah, George J. Antlfinger
  • Patent number: 4612250
    Abstract: Disclosed is a process for preparing water absorbing, cross-linked acrylate resins by aqueous polymerization of (A) acrylic acid neutralized 70 to 100 mole percent for example with ammonia, and/or caustic alkali and/or an amine; with (B) acrylamide in a mole ratio of 70 to 100 mole percent (A) to 30:0 mole percent (B); and (C) a water miscible or a water soluble polyvinyl monomer in an amount of 0.001 to 0.3 weight percent based on the total weight of (A) and (B). In accordance with one embodiment of the invention, the concentration of monomers (A) plus (B) should be at least 70 percent by weight of the polymerization mixture of (A) plus (B) plus (C) to achieve a substantially dry polymer (less than 15 weight percent water) when polymerization is completed by utilizing the exothermic heat of polymerization and cross-linking to drive off water without the need for additional heating to obtain a dry solid.
    Type: Grant
    Filed: March 11, 1985
    Date of Patent: September 16, 1986
    Assignee: American Colloid Company
    Inventors: Hisao Takeda, Yasunori Taniguchi
  • Patent number: 4590238
    Abstract: A high-solid self-adhesive having a solid content of 65 to 75% by weight and composed of an emulsion obtained by emulsion-copolymerizing a vinyl monomer mixture containing acrylate esters as the main ingredient and further at least one hydrophilic monomer of formula (A), (B) or (C). ##STR1## wherein R.sub.1 is H or COOH, R.sub.2 is H or CH.sub.3 and R.sub.3 is H or CH.sub.2 OH.A process for the production of the high-solid self-adhesive comprising successively adding a pre-emulsion obtained by previously mixing said vinyl monomer mixture, a surfactant mixture of a nonionic surfactant and an anionic surfactant and water, to the reaction system to carry out an emulsion copolymerization in the presence of a catalyst.
    Type: Grant
    Filed: February 10, 1984
    Date of Patent: May 20, 1986
    Assignee: Daicel Chemical Industries, Ltd.
    Inventors: Mitsuru Furomoto, Toshio Asano
  • Patent number: 4585809
    Abstract: An aqueous dispersion of a copolymer comprising:(A) from 20 to 90 percent by weight of an unsaturated carboxylic acid of the formula ##STR1## where R.sub.1, R.sub.2, R.sub.3 are hydrogen, alkyl, or --(CH.sub.2).sub.n COOM and M is a proton or an alkali metal or alkaline earth metal or an ammonium cation, and(B) from 10 to 80 percent of at least one other comonomer different from and copolymerizable with A; methods of making a ready-to-use foundry molding sand by mixing such a dispersion with sand; and such ready-to-use foundry molding sands.
    Type: Grant
    Filed: February 10, 1984
    Date of Patent: April 29, 1986
    Assignee: Rohm GmbH
    Inventors: Heinz-Jochen Auer, Wolfgang Klesse, Peter Quis, Walther W. Szubinski
  • Patent number: 4574130
    Abstract: Compounds of the formula:CH.sub.2 .dbd.C(R)--COO--(CH.sub.2 --CH(CH.sub.3)--O).sub.x --(CH.sub.2 --CH.sub.2 --O).sub.y --OC--A--COOHor a salt thereof, whereinR is H or CH.sub.3,x is an integer from 2 to 20.y is an integer from 0 to 5,A is an alkylene, alkenylene, or phenylene radical such that A(COOH).sub.2 is a dibasic acid capable of forming an anhydride (A(CO).sub.2 O, are described. These are polymerizable compounds which have also surfactant properties. The compounds may be used to replace non-polymerizible surfactants in emulsion polymerization reactions, and preferably in those reactions which result in adhesive polymers which are suitable for surgical and medical use. Methods for preparing the compounds and pressure sensitive adhesives formed by copolymerization of the compounds with other acrylate monomers are also described.
    Type: Grant
    Filed: November 7, 1983
    Date of Patent: March 4, 1986
    Assignee: Smith & Nephew Associated Companies P.L.C.
    Inventors: William D. Potter, Sinan B. Kiamil
  • Patent number: 4562226
    Abstract: Aqueous compositions suitable for forming on a substrate a temporary protective coating, which can subsequently be removed by treatment with an aqueous alkaline solution, comprise a sterically stabilized dispersion in an aqueous medium of particles of size range 0.1-10 .mu.m of a polymer derived from monomers including at least one acrylic monomer and from 5% to 40%, based on the total weight of monomers, of an ethylenically unsaturated monocarboxylic acid, or an equivalent proportion of an unsaturated polycarboxylic acid.
    Type: Grant
    Filed: December 28, 1983
    Date of Patent: December 31, 1985
    Assignee: Imperial Chemical Industries PLC
    Inventors: Norman A. Coombes, Michael R. Wilkinson, Charles W. A. Bromley
  • Patent number: 4554018
    Abstract: A thickening agent that is particularly suitable for alkaline print pastes is a water insoluble, water swellable or water swollen polymer made by reverse phase polymerization of a blend of water soluble, copolymerizable monomers in which the monomers comprise at least one ethylenically unsaturated acid having free acid groups, at least one ethylenically unsaturated acid having salt groups selected from ammonium, amine and alkali metal and at least one ethylenically unsaturated cross-linking agent, the molar proportions of the said free acid groups to the said salt groups during the polymerization being from 80:20 to 10:90.
    Type: Grant
    Filed: February 1, 1984
    Date of Patent: November 19, 1985
    Assignee: Allied Colloids Limited
    Inventor: Adrian S. Allen
  • Patent number: 4546146
    Abstract: A process for copolymerizing acrylonitrile (AN) with an amount of a monomer of a specific structure in an organic solvent which can dissolve AN but cannot dissolve polyacrylonitrile (PAN). The polymer dispersion in the solvent is stable upon storage. The dispersed particles of the polymer are uniform and fine, and are sufficiently prevented from agglomeration and agglutination.
    Type: Grant
    Filed: October 16, 1984
    Date of Patent: October 8, 1985
    Assignee: Japan Exlan Company, Ltd.
    Inventors: Toshiyuki Kobashi, Hideo Naka
  • Patent number: 4542180
    Abstract: Improved coating compositions comprise a coreactive polymeric mixture comprising a reactive emulsion polymer produced by copolymerizing ethylenic monomers in the presence of glycoluril dispersed in water to provide an in-situ blend of reactive polymer and glycoluril. Upon heat curing, the glycoluril cross-links with the reactive in-situ formed emulsion polymer.
    Type: Grant
    Filed: October 1, 1984
    Date of Patent: September 17, 1985
    Assignee: SCM Corporation
    Inventors: Gary M. Carlson, Frank A. Wickert
  • Patent number: 4535120
    Abstract: An aqueous dispersion of vinylidene chloride resin which, when coated onto a synthetic resinous film substrate, has the combined properties of: (1) good adhesion to the substrate; (2) good adhesion of a printing ink to the coating; (3) satisfactory barrier to gases (especially oxygen) and water vapor; and (4) a high resistance to boiling water treatment. The vinylidene chloride resin must also have polymerized therein methyl methacrylate, methacrylonitrile and methacrylic acid. A total amount of methacrylic acid must be between 1.times.10.sup.-4 and 3.times.10.sup.-4 moles of methacrylic acid per gram of polymer solids. A portion of the total amount of methacrylic acid exists in a form titratable with a 1/20 Normal aqueous solution of sodium hydroxide. The portion must be the less of (a) about 1.3.times.10.sup.-4 moles per gram of polymer solids or (b) about 60 percent of the total amount.
    Type: Grant
    Filed: September 14, 1981
    Date of Patent: August 13, 1985
    Assignee: The Dow Chemical Company
    Inventors: Kazuhiko Hiyoshi, Norio Matsuura, Michiharu Matsuguchi, Norio Onofusa, Tadao Nishikage
  • Patent number: 4525527
    Abstract: Disclosed is a process for preparing water absorbing, cross-linked acrylate resins by aqueous polymerization of (A) acrylic acid neutralized 70 to 100 mole percent for example with ammonia, and/or caustic alkali and/or an amine; with (B) acrylamide in a mole ratio of 70 to 100 mole percent (A) to 30:0 mole percent (B); and (C) a water miscible or a water soluble polyvinyl monomer in an amount of 0.001 to 0.3 weight percent based on the total weight of (A) and (B). In accordance with one embodiment of the invention, the concentration of monomers (A) plus (B) should be at least 70 percent by weight of the polymerization mixture of (A) plus (B) plus (C) to achieve a substantially dry polymer (less than 15 weight percent water) when polymerization is completed by utilizing the exothermic heat of polymerization and cross-linking to drive off water without the need for additional heating to obtain a dry solid.
    Type: Grant
    Filed: January 21, 1983
    Date of Patent: June 25, 1985
    Assignee: American Colloid Company
    Inventors: Hisao Takeda, Yasunori Taniguchi
  • Patent number: 4524175
    Abstract: A stable water-in-oil emulsion of a hydrophobe associative copolymer of a water-soluble monomer such as acrylamide and a hydrophobic monomer such as dodecyl methacrylate is formed by subjecting a water-in-oil emulsion of the corresponding monomers to copolymerization conditions in the presence of an oil-soluble initiator such as cumene hydroperoxide. Such copolymers associate in aqueous media containing salts such as sodium chloride to increase the viscosity of such media.
    Type: Grant
    Filed: April 16, 1984
    Date of Patent: June 18, 1985
    Assignee: The Dow Chemical Company
    Inventor: Frederick W. Stanley, Jr.
  • Patent number: 4501789
    Abstract: A nonwoven fabric repellent to body fluids and having reduced odor on sterilization by irradiation or steam is made by bonding nonwoven fibers with a latex, forming said nonwoven fabric, and sterilizing said fabric, said latex is prepared by polymerizing, in the presence of 0.1 to 2 weight parts of a free radical initiator and a sufficient amount of a nonionic or anionic emulsifier, 65 to 85 weight parts of a soft hydrophobic monomer having Tg of -80.degree. C. to -20.degree. C., 10 to 30 weight parts of a hard hydrophobic monomer having Tg of +40.degree. C. to +120.degree. C., 0.1 to 5 weight parts of an unsaturated carboxylic acid containing 3 to 6 carbon atoms, and 0.1 to 5 weight parts of N-alkylol acrylamide or methacrylamide containing 1 to 10 carbon atoms, said latex has post-added and admixed therein 0.01 to 5 weight parts of an odor inhibition agent selected from amine-type antioxidants and hindered phenols that function to reduce odor of said fabric on sterilization thereof.
    Type: Grant
    Filed: December 27, 1983
    Date of Patent: February 26, 1985
    Assignee: The B. F. Goodrich Company
    Inventors: Pravinchandra K. Shah, George J. Antlfinger
  • Patent number: 4455342
    Abstract: What are disclosed are aqueous dispersions of an acrylic resin which is suitable for the reinforcement of fibrous articles and is free of formaldehyde and acrylonitrile, said resin comprising (a) from 70 to 96.95 weight percent of alkyl esters of acrylic acid and/or methacrylic acid, or mixtures of such esters with styrene; (b) from 2 to 30 weight percent of an hydroxyalkyl ester of an unsaturated carboxylic acid; (c) from 1 to 10 weight percent of acrylamide or of methacrylamide; (d) from 0.05 to 3 weight percent of a crosslinking comonomer having at least two polymerizable double bonds; (e) up to 5 weight percent of an unsaturated carboxylic acid; and (f) up to 20 weight percent of one or more further monomers, as well as fibrous articles reinforced with such a resin dispersion and showing reduced loss of resin binder on dry cleaning and reduced absorption of plasticizers, and methods of making such articles.
    Type: Grant
    Filed: January 5, 1983
    Date of Patent: June 19, 1984
    Assignee: Rohm GmbH
    Inventors: Herbert Fink, Heiner Kniese, Norbert Suetterlin, Klaus Mueller, Werner Siol
  • Patent number: 4435528
    Abstract: Stable concentrated water-in-oil emulsions of water-soluble polymers such as polyacrylamide are provided by concentrating a water-in-oil preconcentrate emulsion of the water-soluble polymer containing an inverting surfactant in an amount sufficient to reduce the bulk viscosity of the preconcentrate emulsion.
    Type: Grant
    Filed: December 21, 1981
    Date of Patent: March 6, 1984
    Assignee: The Dow Chemical Company
    Inventor: William G. Domina
  • Patent number: 4410588
    Abstract: This invention relates to a process for sizing textile yarns by treatment with copolymers, and/or multipolymers, of acrylamide, and to the products thereby obtained. Said composition comprises an aqueous solution of a segmented copolymer of acrylamide and at least one vinyl or vinylidene polymerizable monomer, the amount of the monomer being at a concentration from about 1% to about 40%, based on the weight of acrylamide in the composition.
    Type: Grant
    Filed: June 1, 1981
    Date of Patent: October 18, 1983
    Assignee: American Cyanamid Company
    Inventor: Chi-Fei Ling
  • Patent number: 4403065
    Abstract: An aqueous emulsion comprising a polymeric resin prepared by polymerizing (a) at least one amino acid of either one of the formula: ##STR1## and the formula: ##STR2## with (b) at least one other polymerizable monomer in an aqueous medium, the component (a) and at least a portion of the component (b) being introduced separately into the reaction system.
    Type: Grant
    Filed: October 15, 1980
    Date of Patent: September 6, 1983
    Assignee: Nippon Paint Co., Ltd.
    Inventors: Tamotsu Yoshioka, Ryuzo Mizuguchi, Shinichi Ishikura, Keizo Ishii
  • Patent number: 4401789
    Abstract: Methods of preparing viscous aqueous polymer solutions having improved viscosity and stability properties for use in the treatment of subterranean hydrocarbon-containing formations and in enhanced oil recovery processes are provided. More particularly, a method of preparing such viscous aqueous polymer solution in a buffer system that contains a particular buffer and a substantially oxygen free aqueous solvent. Such solvent is used for pH control and contains one or more metal salts.
    Type: Grant
    Filed: July 14, 1981
    Date of Patent: August 30, 1983
    Assignee: Halliburton Company
    Inventor: Charles M. Gideon
  • Patent number: 4397984
    Abstract: An aqueous paper-coating composition which essentially comprises a finely divided pigment and an emulsion copolymer of(a) from 30 to 80% by weight of C.sub.4 -C.sub.8 -alkyl acrylates or mixtures of C.sub.4 -C.sub.8 -alkyl acrylates and di-(C.sub.4 -C.sub.8 -alkyl) maleates,(b) from 8 to 30% by weight of acrylic acid and/or methacrylic acid,(c) from 0 to 50% by weight of vinyl propionate, vinyl acetate, methyl acrylate, ethyl acrylate and/or vinyl .alpha.-branched C.sub.10 -monocarboxylate,(d) from 0 to 5% by weight of acrylamide, methacrylamide, vinylsulfonic acid, 2-acrylamido-2-methylpropanesulfonic acid and/or acrylonitrile and(e) from 0 to 3% by weight of crosslinking monomers in the form of an aqueous dispersion, as the sole binder and thickener.
    Type: Grant
    Filed: January 11, 1982
    Date of Patent: August 9, 1983
    Assignee: BASF Aktiengesellschaft
    Inventors: Kurt Wendel, Guenther Addicks