Patents Examined by William F. Hamrock
  • Patent number: 4354007
    Abstract: Polymers are rendered more oxidatively stable by reaction with an antioxidant or stabilizer, generally a vinyl-group- or thiol group-containing antioxidant, in the presence of a free radical which may be produced by a redox system or ultra-violet light. The resulting polymers can be used as such or can be used as additives in other polymers to stabilize the latter.
    Type: Grant
    Filed: January 14, 1980
    Date of Patent: October 12, 1982
    Inventor: Gerald Scott
  • Patent number: 4352898
    Abstract: A homogeneous, water-reducible coating composition comprises a modified polyamine resin homogeneously reduced, in an aqueous system comprising water and a low-molecular weight nitroparaffin. An epoxy resin can be added to the coating composition to form a stable emulsion.
    Type: Grant
    Filed: April 25, 1980
    Date of Patent: October 5, 1982
    Assignee: Deft, Inc.
    Inventor: Richard A. Albers
  • Patent number: 4352909
    Abstract: There is disclosed a process for producing a tri-halogenated polystyrene flame retardant for synthetic resins, whereby high molecular weight polystyrene is reacted with bromine chloride in a chlorinated hydrocarbon solvent, under substantially anhydrous conditions, in the presence of a catalytic amount of a Lewis acid.
    Type: Grant
    Filed: August 20, 1980
    Date of Patent: October 5, 1982
    Assignee: Ferro Corporation
    Inventors: Henry J. Barda, Sandra L. Gray
  • Patent number: 4352912
    Abstract: Copolymers of alpha-methylstyrene-type monomers and conjugated diene monomers are prepared by polymerizing an alpha-methylstyrene monomer using a first polar activator, adding a small amount of a conjugated diene monomer to cap the block of alpha-methylstyrene-type monomer polymer, and further adding a conjugated diene monomer and polymerizing with a second polar activator effective for copolymerization of residual alpha-methylstyrene-type monomer. The resulting copolymer can be coupled to form linear or radial block copolymers.
    Type: Grant
    Filed: June 29, 1981
    Date of Patent: October 5, 1982
    Assignee: Phillips Petroleum Company
    Inventor: Floyd E. Naylor
  • Patent number: 4351924
    Abstract: Alkyl methacrylate polymers which have one or more hydroxyhydrocarbyl end groups and a process for making them employing an anionic initiator followed by hydrolysis. The polyfunctional polymers are useful in automobile powder finishes and the monofunctional polymers are useful in polymer blends.
    Type: Grant
    Filed: March 16, 1981
    Date of Patent: September 28, 1982
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Gerald D. Andrews, William H. Sharkey
  • Patent number: 4351926
    Abstract: A process for making a heat-curable polymer comprising the steps of:(a) preparing a mixture comprising:alkylene-alkyl acrylate copolymer;from 0.1 to 10 parts by weight based on 100 parts by weight of copolymer of difunctional compound having the formulaR.sub.1 --R.sub.2 --R.sub.3wherein R.sub.1 and R.sub.3 are independently selected from the group consisting of --OH, --SH, ##STR1## wherein R.sub.4 is C.sub.1 to C.sub.20 hydrocarbon; R.sub.2 is a divalent organic radical terminated with other than aryl;from 0.1 to 10 parts by weight based on 100 parts by weight of the copolymer of organo titanate;(b) heating said mixture to temperature of between the melting temperature of the copolymer and about 200.degree. C.
    Type: Grant
    Filed: December 26, 1979
    Date of Patent: September 28, 1982
    Assignee: Union Carbide Corporation
    Inventor: Michael J. Keogh
  • Patent number: 4351757
    Abstract: Use of a selected alkali metal salt of a polycarboxylic acid has been found to impart good crystallization and mold release properties to polyethylene terephthalate molding blends.
    Type: Grant
    Filed: October 24, 1980
    Date of Patent: September 28, 1982
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Guenther K. Hoeschele
  • Patent number: 4351925
    Abstract: An improved process for the thermal stabilization of an acrylic fibrous material or film is provided. The fibrous material or film initially is contacted with aniline provided at an elevated temperature. Such aniline treatment (as described) has been found to render the fibrous material or film capable of undergoing thermal stabilization on a more expeditious basis. Subsequently the resulting fibrous material or film is heated in an oxygen-containing atmosphere at a temperature of approximately 200.degree. to 360.degree. C. until a stabilized fibrous material or film is formed.
    Type: Grant
    Filed: April 27, 1981
    Date of Patent: September 28, 1982
    Assignee: Celanese Corporation
    Inventor: Steven B. Warner
  • Patent number: 4350773
    Abstract: A weakly acidic cation exchange resin which is obtainable by a reaction of glyoxylic acid and a polyvinyl alcohol cross-linked by cross-linking groups each containing two or more carbon atoms, and has an exchange capacity of 3 meq/g or greater and a swelling volume of 10 ml/g or smaller, as well as a process for producing such cation exchange resin.
    Type: Grant
    Filed: July 6, 1981
    Date of Patent: September 21, 1982
    Assignee: Mitsubishi Chemical Industries, Limited
    Inventors: Takaharu Itagaki, Hidenaga Ouchi
  • Patent number: 4350798
    Abstract: A process is disclosed for photochlorinating poly(vinyl chloride), ("PVC"), suspended in liquid chlorine ("Cl.sub.2 ") which swells the PVC and permits chlorination to occur in a gel phase. PVC starting material is in the form of solid free-flowing macrogranules which are slurried in from about 5 to about 50 times their weight of liquid Cl.sub.2 in a reaction zone maintained at a temperature in the range from about -50.degree. C. to about 50.degree. C., and a pressure sufficient to maintain the chlorine in its liquid state. Since liquid Cl.sub.2 itself swells the PVC to provide a gel phase in which photochlorination occurs, no conventional chlorinated hydrocarbon swelling agents, catalytic materials and the like are necessary. The process may be operated as a batch process, or a continuous process. Typical chlorine content of PVC is about 56.7 percent by weight (% by wt), and the product of chlorination is chlorinated poly(vinyl chloride), ("CPVC"). When formed, this CPVC is dissolved in the liquid Cl.sub.
    Type: Grant
    Filed: January 26, 1981
    Date of Patent: September 21, 1982
    Assignee: The B. F. Goodrich Company
    Inventor: Richard G. Parker
  • Patent number: 4349653
    Abstract: Polymeric compositions having high softening temperatures, good gas barrier properties and low creep properties are composed of an olefinically unsaturated nitrile, another monovinyl component and maleic anhydride and optionally a diene monomer.
    Type: Grant
    Filed: April 9, 1979
    Date of Patent: September 14, 1982
    Assignee: The Standard Oil Company
    Inventors: George S. Li, John F. Jones
  • Patent number: 4349646
    Abstract: There is provided a water insoluble disinfectant composition comprising a tertiary amine quaternized with a water insoluble carrier to provide a quaternary ammonium salt.In the preferred modification of the invention, the carrier is a resin, most suitably a crosslinked polystyrene or crosslinked methacrylate resin. The compositions of the present invention are formed by creating an amine reactive labile active center on the carrier and reacting said activated carrier with the amine of choice to form a quaternary ammonium salt. Ammonium salts having at least one alkyl moiety of C10 to C16 carbon atoms and at least one aryl moiety have been found particularly effective.
    Type: Grant
    Filed: January 31, 1980
    Date of Patent: September 14, 1982
    Assignee: Research Foundation of State University of New York
    Inventors: Ron Nudel, Gilbert E. Janauer, Eugene E. Schrier, Ilona W. Figura
  • Patent number: 4349652
    Abstract: Polymeric compositions having high softening temperatures, good gas barrier properties and low creep properties are composed of an olefinically unsaturated nitrile, another monovinyl component and maleic anhydride and optionally a diene monomer.
    Type: Grant
    Filed: February 6, 1981
    Date of Patent: September 14, 1982
    Assignee: Sohio
    Inventors: George S. Li, John F. Jones
  • Patent number: 4349647
    Abstract: A resist material for micro-fabrication comprising a polymer in which the polymer backbone has thereon a moiety of the formula (I) ##STR1## wherein R represents a hydrogen atom, an alkyl group, an alkenyl group or an aryl group or an aralkyl group, the resist material being curable by electromagnetic radiation such as electron beams, X-rays or deep ultraviolet light with a wave length of less than about 3000A and being particularly suitable as a micro-fabrication resist material.
    Type: Grant
    Filed: February 5, 1981
    Date of Patent: September 14, 1982
    Assignee: Somar Manufacturing Co., Ltd.
    Inventors: Kohtaro Nagasawa, Hideo Ochi, Fujio Tanaka, Yumi Shibata
  • Patent number: 4347342
    Abstract: This disclosure relates to an improved process for initiating radical reactions employing a class of hydroximic acid derivatives as initiators. Radical reactions initiated by such hydroximic acid derivatives include copolymerization of unsaturated polyester resins and cross-linking of polyethylene. The initiators of the present disclosure have a higher degradation temperature than found with typical peroxides.
    Type: Grant
    Filed: February 20, 1981
    Date of Patent: August 31, 1982
    Assignee: Akzona Incorporated
    Inventors: Jan D. Van Drumpt, Wilhelmus M. Beijleveld
  • Patent number: 4347328
    Abstract: The agglomeration or clumping of the resins in a resin bed comprising a mixture of anion and cation exchange resins is effectively reduced by treating the anion or cation resin with an aqueous dispersion of water-insoluble polymer particles having a particle size of from about 100 to about 800 A and bearing a moiety having opposite ionic character than the resin being treated. For example, the surface charge exhibited by a strong base anion exchange resin bearing pendant quaternary ammonium groups is reduced by contacting the resin with a colloidal aqueous dispersion of a water-insoluble polymer of a monovinylidene aromatic such as styrene and a small amount of a polyvinylidene aromatic such as divinylbenzene which polymer bears pendant sulfonate groups. The thus treated anion exchange resin can subsequently be mixed with a cation exchange resin to form a mixed resin bed having reduced clumping of resins without coincident decrease in efficiency.
    Type: Grant
    Filed: September 8, 1980
    Date of Patent: August 31, 1982
    Assignee: The Dow Chemical Company
    Inventors: Zita T. K. Harmon, Lowell B. Lindy
  • Patent number: 4346204
    Abstract: A copolymer derived from maleic anhydride and dicyclopentadiene, containing hydroxyl groups, having the formula: ##STR1## wherein R and R' may be the same or different, selected from the group consisting of H, C.sub.1 -C.sub.14 alkyl-isobutyronitrile, phenyl which is optionally substituted by halogen, C.sub.1 -C.sub.8 alkyl-substituted phenyl, C.sub.1 -C.sub.14 alkoxy-, C.sub.1 -C.sub.14 acyloxy- or halogen-substituted benzoyl, and n=3-10. The copolymer is useful for the sizing of paper.
    Type: Grant
    Filed: February 14, 1980
    Date of Patent: August 24, 1982
    Assignee: C Hemische Werke Huls Aktiengesellschaft
    Inventors: Felix Schulde, Karl Peterlein, Klaus Diedrich
  • Patent number: 4345049
    Abstract: A process for the preparation of polyvinylpyrrolidone-iodine, wherein a polyvinylpyrrolidone which has been subjected to hydrogenation is reacted with iodine in a conventional manner. The novel process is particularly suitable for use with low molecular weight polyvinylpyrrolidone, having a K value of from 10 to 20.
    Type: Grant
    Filed: October 3, 1980
    Date of Patent: August 17, 1982
    Assignee: BASF Aktiengesellschaft
    Inventors: Walter Denzinger, Ferdinand Straub, Heinrich Hartmann
  • Patent number: 4343920
    Abstract: The invention pertains to polymeric polydentate complexons (i.e. chelating agents) of general formulae I and II ##STR1## where P is a linear or three-dimensional polymeric skeleton and X is --0-- or ##STR2## while R is H, C.sub.1 -C.sub.6 alkyl, or phenyl or phenyl substituted with 1-2 C.sub.1 -C.sub.6 alkyl or alkoxy groups. Another objective of the invention is a method for producing the polymeric polydentate complexons described above, wherein a compound P -XH, where P and X have the above given meaning, reacts with 4,4'-ethylenebis(2,6-morpholinedione) the presence of an inert solvent and, if it is desired, also in the presence of acidic or basic catalysts, e.g. protic acids, Lewis acids, tertiary amines, and alkaline or alkaline earth salts of carboxylic acids.
    Type: Grant
    Filed: December 19, 1980
    Date of Patent: August 10, 1982
    Assignee: Cexkoslovenska akademie ved
    Inventor: Jaroslav Kahovec
  • Patent number: 4342844
    Abstract: A process for the preparation of an organic peroxide master batch comprising about 20-60% by weight of an organic peroxide and about 40-80% by weight of a polymer capable of being cross-linked by the peroxide, is disclosed. The process comprises contacting particles of such a polymer, having a diameter from about 200 microns to about 20 millimeters, at a temperature from about 15.degree. C. to about 95.degree. C.
    Type: Grant
    Filed: December 4, 1980
    Date of Patent: August 3, 1982
    Assignee: Akzona Incorporated
    Inventors: Reinder Torenbeek, Jan D. van Drumpt, Gerrit F. Drost