Patents Represented by Attorney James F. Mudd
  • Patent number: 4444960
    Abstract: This invention relates to substantially transparent solid solution polymer blends having improved hydrolytic stability, and flexibility which comprise, in admixture, (1) a linear aromatic polyester of a dicarboxylic acid and a bisphenol, and (2) a linear aromatic polysulfonate of a bisphenol and a disulfonic acid. The polyblends are useful in preparation of films and molded articles.
    Type: Grant
    Filed: November 3, 1980
    Date of Patent: April 24, 1984
    Assignee: Occidental Chemical Corporation
    Inventors: Gideon Salee, Jerold C. Rosenfeld
  • Patent number: 4426484
    Abstract: The cure of resin compositions comprising a mixture of a resole type phenol aldehyde resin and a novolac type phenol formaldehyde resin is improved by employing resorcinol as all or part of the phenolic component in the novolac type resin. The resin compositions are particularly useful as binders for foundry sand.
    Type: Grant
    Filed: October 14, 1981
    Date of Patent: January 17, 1984
    Assignee: Sumitomo Durez Company, Ltd.
    Inventors: Yukio Saeki, Katsuyuki Tanaka
  • Patent number: 4423188
    Abstract: A polymer blend capable of being molded to an impact resistant, substantially transparent or translucent article which comprises a vinyl halide homopolymer or copolymer, a conventional impact resistance enhancing polymer agent for polyvinyl halide wherein the monomer units consist essentially of methyl methacrylate, 1,3-butadiene and styrene residues and a thermoplastic block elastomer wherein the essential and predominant monomer units are the residue of a mono-alkenyl aromatic hydrocarbon and the residue of an alkadiene hydrocarbon. The thermoplastic elastomer is normally incompatible with the vinyl halide polymer or copolymer. The vinyl halide polymer or copolymer constitutes the major proportion of said blend and the block and methacrylate polymers together constitute a minor proportion of the composition. The weight ratio of block polymer to methacrylate polymer is about 1:5 to about 5:1.
    Type: Grant
    Filed: March 8, 1982
    Date of Patent: December 27, 1983
    Assignee: Occidental Chemical Corporation
    Inventor: Gilbert Witschard
  • Patent number: 4419477
    Abstract: This invention relates to a powdered phenolic resin composition suitable for the production of dry processed resinbonded felt. The phenolic resin composition imparts a good release of the felt from the heated platen or belt and has a rapid cure rate. The powdered phenolic composition is composed of a novolac type phenolic resin, or a mixture of novolac and resole type with an aromatic carboxylic acid as an additive. The resin mixture has a bulk density of 0.29-0.36 gm/cm.sup.3, and contains 0.3-5 parts by weight of the aromatic carboxylic acid to 100 parts by weight of phenolic resin. Said aromatic carboxylic acid has the formulaR--Ar--COOHwhereinR is selected from hydrogen, hydroxy or alkoxy groups, andAr is selected from phenyl, phenylalkenyl or phenylalkyl groups.
    Type: Grant
    Filed: September 30, 1982
    Date of Patent: December 6, 1983
    Assignee: Sumitomo Durez Company, Ltd.
    Inventors: Yukio Saeki, Naomitsu Inoue
  • Patent number: 4419400
    Abstract: Filament reinforced phenolic resin products are provided which comprise a plurality of filaments and a cured, normally liquid phenolic resin interspersed around the filaments. The filaments can be in the form of continuous fibers, roving, woven roving, cloth and mat. The products are useful in structural applications. Also disclosed are novel glycol-modified resole phenolic resins and oligomeric polyol-modified resole phenolic resins.
    Type: Grant
    Filed: October 26, 1981
    Date of Patent: December 6, 1983
    Assignee: Occidental Chemical Corporation
    Inventor: Raymond R. Hindersinn
  • Patent number: 4418161
    Abstract: This invention relates to a method for the production of an improved resin coated lubricated sand for use in shell molding processes, wherein the resin coated sand is especially useful in casting operations using aluminum, magnesium and their alloys.The sand is coated with a phenolic type resin containing a lubricant and an additive to assist in the thermal decompositions of the binder to provide a more efficient removal of the sand grains. The additive is an organic bromide compound of the type: ##STR1## wherein: n and m are integers 0, 1 or 2, and n and m cannot be O at the same time.B.sub.r position is ortho to --oxx is selected from: --H, --C.sub.2 H.sub.4 OH, --CH.sub.2 -- CH.dbd.CH.sub.2 and --CH.sub.2 --CH BR--CH.sub.2 BR.
    Type: Grant
    Filed: August 20, 1982
    Date of Patent: November 29, 1983
    Assignee: Sumitomo Durez Company, Ltd.
    Inventors: Noriaki Matsushima, Yukio Saeki, Yukio Tokunaga
  • Patent number: 4415721
    Abstract: Linear aromatic polyesters of bisphenols and dicarboxylic compounds are prepared by transesterification polymerization in either a fully continuous process or in a semi-continuous process wherein a first stage is conducted batchwise and a second stage is conducted in a continuous manner wherein the second stage employs a wiped film reactor, alternatively, a wiped film reactor followed by a vented extrusion reactor. The processes are preferably conducted in the presence of a catalyst in liquid form, and further under conditions wherein the catalyst is introduced to the polymerization concurrent with the introduction of liquid phase reactants to avoid substantial heating of the reactants in contact with the catalyst prior to onset of the transesterification reaction. The products of the processes have an unexpectedly low polydispersity.
    Type: Grant
    Filed: February 9, 1981
    Date of Patent: November 15, 1983
    Assignee: Occidental Chemical Corporation
    Inventors: George M. Kosanovich, Gideon Salee
  • Patent number: 4413092
    Abstract: A polymer blend capable of being molded to an impact resistant, article which comprises a vinyl halide homopolymer or copolymer, a conventional impact resistant enhancing polymer agent for polyvinyl halide wherein the monomer units consist essentially of acrylonitrile, 1,3-butadiene and styrene residues and a thermoplastic block elastomer wherein the essential and predominant monomer units are the residue of a mono-alkenyl aromatic hydrocarbon and the residue of an alkadiene hydrocarbon. The thermoplastic elastomer is normally incompatible with the vinyl halide polymer or copolymer. The vinyl halide polymer or copolymer constitutes the major proportion of said blend and the block and methacrylate polymers together constitute a minor proportion of the composition. The weight ratio of block polymer to acrylonitrile-butadiene-styrene polymer is preferably about 1:5 to about 5:1.
    Type: Grant
    Filed: February 24, 1982
    Date of Patent: November 1, 1983
    Assignee: Occidental Chemical Corporation
    Inventor: Gilbert Witschard
  • Patent number: 4412045
    Abstract: A color developer for pressure-sensitive copying papers is prepared by mixing a para-substituted difunctional phenol-aldehyde condensate and tri- or higher-functional phenol-aldehyde condensate. The tri- or higher-functional phenol-aldehyde condensate can be modified by a polyvalent metal.
    Type: Grant
    Filed: January 25, 1982
    Date of Patent: October 25, 1983
    Assignee: Sumitomo Durez Company, Ltd.
    Inventors: Toyoji Kikuga, Koji Hirai
  • Patent number: 4409374
    Abstract: A color developer for pressure-sensitive copying paper is prepared by mixing a polyvalent metal salt of a para-substituted difunctional phenol-aldehyde condensate and a tri- or higher-functional phenol-aldehyde condensate and/or a polyvalent metal modified tri- or higher-functional phenol-aldehyde condensate.
    Type: Grant
    Filed: January 25, 1982
    Date of Patent: October 11, 1983
    Assignee: Sumitomo Durez Company, Ltd.
    Inventors: Toyoji Kikuga, Koji Hirai
  • Patent number: 4401012
    Abstract: An improved disc brake plastic piston is described which has a metallic cap or face which provides a means of attaching a brake shoe or a brake shoe assembly, or provides a dust boot groove, or, in a most preferred mode, the metallic cap component provides both a brake shoe retaining means and a dust boot groove.The piston is comprised of a cylindrical plastic body having an open end and a closed end. At least one ring bead can extend from the wall of the piston body contiguous to, or near, the open end. The bead or beads are suitably ejector beads utilized in the molding operation. A metallic cap extends over the end wall of the open end of the cylindrical body and is secured to the body by being snap fit or clamped over the ring bead. The cap is adapted to receive and hold a brake shoe clip, or provide a dust boot groove, and, in a most preferred embodiment, provides both a brake shoe retaining means and a dust boot groove.
    Type: Grant
    Filed: June 5, 1981
    Date of Patent: August 30, 1983
    Assignee: Occidental Chemical Corporation
    Inventor: John E. Emmett
  • Patent number: 4379880
    Abstract: Vinyl halide polymer is prepared by bulk liquid phase polymerization of vinyl halide monomer in the presence of a minor proportion, based on the weight of the polymerization reaction mass, of isobutane diluent followed by application of reduced pressure to remove diluent and unreacted monomer from the polymer.The product exhibits improved porosity and molten color stability compared to vinyl halide polymers prepared in bulk in the presence of conventional alkane hydrocarbon diluents.
    Type: Grant
    Filed: August 5, 1981
    Date of Patent: April 12, 1983
    Assignee: Occidental Chemical Corporation
    Inventor: William L. Schall
  • Patent number: 4370123
    Abstract: The apparatus of the present invention includes a stationary assembly and a movable assembly. The stationary assembly is comprised of a stationary platen which has a heat plate, a temperature-controlled sprue bushing and a mold face positioned thereon. The movable assembly is comprised of a movable platen which has a heat plate mounted thereon and a mold face, corresponding to, and adapted to be aligned with, the mold face on the stationary assembly to form a partially open mold cavity. Means are provided to feed a supply of thermosetting molding material through the sprue bushing into the partially open mold cavity. Means are provided to completely close the mold cavity and place the apparatus in a compression stage.
    Type: Grant
    Filed: June 29, 1981
    Date of Patent: January 25, 1983
    Assignee: Occidental Chemical Corporation
    Inventors: W. Andrew Dannels, Robert W. Bainbridge
  • Patent number: 4370122
    Abstract: The apparatus of the present invention includes a stationary assembly and a movable assembly. The stationary assembly is comprised of a stationary platen which has a heat plate mounted thereon, a temperature-controlled sprue bushing mounted in the heat plate and a plurality of mold faces positioned on the heat plate surrounding the periphery of the sprue bushing. The movable assembly is comprised of a movable platen which has a heat plate mounted thereon and a plurality of mold faces, corresponding to, and adapted to be aligned with, the mold faces on the stationary assembly. Means are provided to move the movable assembly into close proximity with the stationary assembly to form partially open mold cavities. Means are provided to feed a supply of thermosetting molding material through the sprue bushing into a manifold area and into the partially open mold cavities. Means are provided to completely close the mold cavities and place the apparatus in a compression stage.
    Type: Grant
    Filed: June 29, 1981
    Date of Patent: January 25, 1983
    Assignee: Occidental Chemical Corporation
    Inventors: W. Andrew Dannels, Robert W. Bainbridge
  • Patent number: 4369263
    Abstract: A friction material useful in automobile brakes and the like, comprises as a reinforcing agent steel wool coated with a thermosetting resin such as a phenolic resole resin.
    Type: Grant
    Filed: December 15, 1980
    Date of Patent: January 18, 1983
    Assignee: Sumitomo Durez Company Ltd.
    Inventors: Noriaki Matsushima, Ken-ichi Noguchi, Kazuhisa Hirano
  • Patent number: 4345003
    Abstract: A phenolic resin binder useful for hot coating foundry sand and comprising a mixture of a solid resol phenolic resin and a lubricant is provided in the form of beads or rods of diameter of about 0.5 to 7 mm and a length of about 0.5 to 30 mm. The beads or rods can be formed directly from a molten mixture of the components or the molten mixture can first be solidified and thereafter formed into such beads or rods. The process for the hot coating of foundry sand with the phenolic resin binder and the resulting foundry compositions, molds and cores are also disclosed.
    Type: Grant
    Filed: December 4, 1980
    Date of Patent: August 17, 1982
    Assignee: Sumitomo Durez Company, Ltd.
    Inventors: Noriaki Matsushima, Shigeru Nemoto
  • Patent number: 4342845
    Abstract: The present invention relates to production of vinyl halide-polyolefin graft copolymers by a liquid phase bulk polymerization process wherein the process is carried out in the presence of a diluent. Suitable diluents preferably have vaporization pressure characteristics, within 100 psi., and similar liquid state viscosity, as vinyl halide monomer. The diluents are soluble in vinyl halide monomer under reaction conditions and are inert to the polymerization mass. The diluents are straight or branched chain, or cyclic saturated hydrocarbons having from about 3 to about 15 carbon atoms and, more preferably, from about 4 to about 8 carbon atoms. Particularly useful diluents are n-propane, n-butane, isobutane or mixtures thereof. The diluents are utilized in amounts from about 0.2 to less than about 50.0 percent based upon the total weight of the reaction charge.
    Type: Grant
    Filed: October 3, 1980
    Date of Patent: August 3, 1982
    Assignee: Hooker Chemicals & Plastics Corp.
    Inventor: William L. Schall
  • Patent number: 4319002
    Abstract: A polymer blend capable of being molded to an impact resistant, substantially transparent or translucent article which comprises a vinyl halide homopolymer or copolymer, a conventional impact resistance enhancing polymer agent for polyvinyl halide wherein the monomer units consist essentially of methyl methacrylate, 1,3-butadiene and styrene residues and a thermoplastic block elastomer wherein the essential and predominant monomer units are the residue of a mono-alkenyl aromatic hydrocarbon and the residue of an alkadiene hydrocarbon. The thermoplastic elastomer is normally incompatible with the vinyl halide polymer or copolymer. The vinyl halide polymer or copolymer constitutes the major proportion of said blend and the block and methacrylate polymers together constitute a minor proportion of the composition. The weight ratio of block polymer to methacrylate polymer is about 1:5 to about 5:1.
    Type: Grant
    Filed: July 28, 1980
    Date of Patent: March 9, 1982
    Assignee: Hooker Chemicals & Plastics Corp.
    Inventor: Gilbert Witschard
  • Patent number: 4319017
    Abstract: Linear aromatic polyesters of bisphenols and dicarboxylic compounds are prepared by transesterification polymerization in either a fully continuous process or in a semi-continuous process wherein a first stage is conducted batchwise and a second stage is conducted in a continuous manner wherein the second stage employs a wiped film reactor. The processes are preferably conducted in the presence of a catalyst in liquid form, and further under conditions wherein the catalyst is introduced to the polymerization concurrent with the introduction of liquid phase reactants to avoid substantial heating of the reactants in contact with the catalyst prior to onset of the transesterification reaction. The products of the processes have an unexpectedly low polydispersity.
    Type: Grant
    Filed: March 10, 1980
    Date of Patent: March 9, 1982
    Assignee: Hooker Chemicals & Plastics Corp.
    Inventors: George M. Kosanovich, Gideon Salee
  • Patent number: 4312975
    Abstract: There is disclosed a diester of a bisphenol having two dicarboxylic acid residues wherein the dicarboxylic acid residues terminate in carboxylic acid ester groups derived from a long chain aliphatic monofunctional hydrocarbon alcohol. Compositions of the diester and a linear aromatic polyester of a bisphenol and dicarboxylic acid are characterized by enhanced processability and enhanced hydrolytic stability compared to the polyester.
    Type: Grant
    Filed: June 4, 1979
    Date of Patent: January 26, 1982
    Assignee: Hooker Chemicals & Plastics Corp.
    Inventors: Gideon Salee, Jerold C. Rosenfeld