Ingredient Is A Heterocyclic Compound Patents (Class 521/90)
  • Patent number: 4393147
    Abstract: An improved expandable polymeric styrene particle is provided containing a blowing agent and a minor amount of ethylene-bis-stearamide and dibromoethyldibromocyclohexane. The improved particle results in a significantly reduced final mold cooling cycle in producing the finished molded article. Ethylene-bis-stearamide and dibromoethyldibromocyclohexane can be incorporated during impregnation with the blowing agent or by blending with the expandable particles after impregnation.
    Type: Grant
    Filed: November 22, 1982
    Date of Patent: July 12, 1983
    Assignee: Cosden Technology, Inc.
    Inventor: Richard A. Schwarz
  • Patent number: 4393146
    Abstract: Fire retardant, expanded styrene polymer shaped objects are perpared by:(a) mixing styrene monomer or a mixture thereof with at least one comonomer, an expanding agent and a fire retardant, organic halogen compound in a aqueous dispersion;(b) adding to (a) either before or during polymerization from about 0.0001 to 0.1 percent by weight esters soluble in the organic phase of (a), these esters of aliphatic dicarboxylic acids and aliphatic epoxy alcohols having at least 11 carbon atoms;(c) polymerizing the aqueous dispersion of (a) and (b) using radical forming initiators at a temperature of about 80.degree. to 130.degree. C.;(d) separating bead polymers having diameters between about 0.4 and 3 mm;(e) pre-foaming the beads;(f) ageing the pre-foamed beads; and(g) final forming the aged and pre-foamed beads in a pressure resistant mold.
    Type: Grant
    Filed: May 20, 1982
    Date of Patent: July 12, 1983
    Assignee: Chemische Werke Huls AG
    Inventors: Josef K. Rigler, Ekkehard Wienhofer, Horst Leithauser, Karl Trukenbrod
  • Patent number: 4386129
    Abstract: This invention relates to porous films having pores with polygonal cross sections and average pore diameters of about 3 to about 100 microns and the method for preparing these films. More particularly this invention relates to a porous film having pores with polygonal cross sections and average pore diameters of about 3 to about 100 microns formed from a resinous polymer of propylene and the process for forming the film which comprises the steps of (a) forming a film containing beta-spherulites and (b) selectively extracting the beta-spherulites.
    Type: Grant
    Filed: March 31, 1981
    Date of Patent: May 31, 1983
    Assignee: Standard Oil Company (Indiana)
    Inventor: Philip Jacoby
  • Patent number: 4384049
    Abstract: In the manufacture of bodies of foamed plastic material, a polymeric synthetic resin base material is mixed with a cross-linking agent, a foaming agent and at least one further additive. The resulting mixture is shaped without a decomposition of the cross-linking and foaming agent and is subsequently heated to effect cross-linking and foaming. In order to obtain bodies of foamed plastic materials which owing to their high flexibility and low flammability are particularly suitable as heat-insulating materials in buildings, the base material consists only of a chlorinated polyethylene resin or a mixture of such resins and heat-stabilizing agents known for use with halogen-containing polymers are incorporated in the mixture.
    Type: Grant
    Filed: April 13, 1981
    Date of Patent: May 17, 1983
    Assignee: Kunststoffwerk Karl Egger
    Inventor: Karl Rametsteiner
  • Patent number: 4377694
    Abstract: New hydroxyalkyl-1,2,4-triazolidine-3,5-diones corresponding to the general Formula I ##STR1## in which R.sup.1 represents a monofunctional to pentafunctional organic radical, optionally substituted and/or optionally interrupted by hetero atoms or hetero atom groups,R.sup.2, R.sup.3, R.sup.4 and R.sup.5 are the same or different and represent hydrogen, an aliphatic C.sub.1 -C.sub.1 O-radical, a cycloaliphatic C.sub.4 -C.sub.8 radical or an araliphatic C.sub.7 -C.sub.17 -radical, said radicals are optionally substituted by halogen, an aromatic C.sub.6 -C.sub.16 -radical or an aromatic C.sub.6 -C.sub.16 -radical substituted by halogen, C.sub.1 -C.sub.4 -alkyl or C.sub.1 -C.sub.4 -alkoxy, a and b are the same or different and represent a number of from 1 to 30, and n=a number of from 1 to 5.The new compounds are obtained by oxalkylation reaction using 1,2,4-triazolidine-3,5-diones of Formula I as starting materials in which a and b represent the number 0.
    Type: Grant
    Filed: June 29, 1981
    Date of Patent: March 22, 1983
    Assignee: Bayer Aktiengesellschaft
    Inventors: Henning Giesecke, Rudolf Merten, Ludwig Rottmaier
  • Patent number: 4351911
    Abstract: A foamable thermoplastic injection moldable composition comprising in admixture (a) a polyester resin, (b) a filler selected from the group consisting of fibrous glass or a mineral or mixtures thereof in an amount of from about 5 to about 50 weight percent, and (c) a minor amount of foaming agent.
    Type: Grant
    Filed: August 1, 1980
    Date of Patent: September 28, 1982
    Assignee: General Electric Company
    Inventor: Daniel W. Fox
  • Patent number: 4343912
    Abstract: The present invention pertains to a method for reducing the processing temperature of a thermoplastic polymer comprising blending the thermoplastic polymer in powder form with an effective amount of a compound having a softening temperature of about 20.degree. to 200.degree. C. lower than the softening temperature of the thermoplastic polymer. The invention further pertains to novel chemical blowing agent concentrates.
    Type: Grant
    Filed: September 21, 1981
    Date of Patent: August 10, 1982
    Assignee: Mobay Chemical Corporation
    Inventor: In C. Lim
  • Patent number: 4338246
    Abstract: Thermoplastic polymethacrylate compositions comprising (a) thermoplastic polymethacrylate such as polymethyl methacrylate, a pentate salt of an amino-s-triazine, and optionally a polyol are flame retardant and intumescent and may be compounded to be self-extinguishing.
    Type: Grant
    Filed: August 21, 1981
    Date of Patent: July 6, 1982
    Assignee: Borg-Warner Chemicals, Inc.
    Inventor: Yuval Halpern
  • Patent number: 4338245
    Abstract: Thermoplastic polyester compositions comprising a polyester such as polybutylene terephthalate, a pentate salt of an amino-s-triazine, and optionally a polyol are flame retardant and intumescent and may be compounded to be self-extinguishing.
    Type: Grant
    Filed: August 12, 1981
    Date of Patent: July 6, 1982
    Assignee: Borg-Warner Chemicals, Inc.
    Inventor: Yuval Halpern
  • Patent number: 4336184
    Abstract: Thermoplastic polyphenylene ether compositions comprising a polyphenylene ether-styrenic resin blend, a pentate salt of an amino-s-triazine and optionally a polyol are flame retardant and intumescent and may be compounded to be self-extinguishing.
    Type: Grant
    Filed: August 12, 1981
    Date of Patent: June 22, 1982
    Assignee: Borg-Warner Chemicals, Inc.
    Inventor: Yuval Halpern
  • Patent number: 4334030
    Abstract: Foamable blends are provided of high performance thermoplastic polymers such as polyphenylene oxides, polystyrenes, etc., and an effective amount of a first blowing agent which is an amide derivative of azodicarboxylic acid and a second blowing agent which is a dihydrooxadiazinone.
    Type: Grant
    Filed: November 23, 1979
    Date of Patent: June 8, 1982
    Assignee: General Electric Company
    Inventor: John E. Kochanowski
  • Patent number: 4330495
    Abstract: A novel method of making foamed, crosslinked low density polyethylene utilizing as dual crosslinking/blowing agents, organic peroxides of the formula: ##STR1## where each R is a t-alkyl group bonded through its tertiary carbon atom and having 4-8 carbon atoms; and R' is an alkyl group of 1-6 carbon atoms.
    Type: Grant
    Filed: February 23, 1981
    Date of Patent: May 18, 1982
    Assignee: U.S. Peroxygen Company
    Inventors: Reidar Halle, Roger N. Lewis, John R. Muenchow
  • Patent number: 4313873
    Abstract: The present invention pertains to a method for reducing the processing temperature of a thermoplastic polymer comprising blending the thermoplastic polymer in powder form with an effective amount of a compound having a softening temperature of about 20.degree. to 200.degree. C. lower than the softening temperature of the thermoplastic polymer. The invention further pertains to novel chemical blowing agent concentrates.
    Type: Grant
    Filed: June 18, 1979
    Date of Patent: February 2, 1982
    Assignee: Mobay Chemical Corporation
    Inventor: In C. Lim
  • Patent number: 4288560
    Abstract: A process for foaming thermoplastic materials by adding to the plastics material 0.05 to 5 percent by weight of a dioxazolone of the formula I ##STR1## in which n is 1, 2 or 3, and when n is 1R is C.sub.1 -C.sub.12 -alkyl, C.sub.2 -C.sub.12 -alkenyl, C.sub.7 -C.sub.9 -aralkyl, C.sub.3 -C.sub.6 -cycloalkyl, C.sub.6 -C.sub.10 -aryl, or phenyl substituted by C.sub.1 -C.sub.9 -alkyl, halogen, C.sub.1 -C.sub.9 -alkoxy or nitro, or it is a heterocyclic radical, or when n is 2R is C.sub.1 -C.sub.8 -alkylene, ethenylene, m- or p-phenylene, m- or p-halophenylene, biphenylene, oxy-bis-(p-phenylene), 2,5-thienylene, 2,5-furylene, 2,6-pyridylene or naphthylene, or when n is 3R is phenenyl,and subsequently heating the mixture.
    Type: Grant
    Filed: August 25, 1980
    Date of Patent: September 8, 1981
    Assignee: Ciba-Geigy Corporation
    Inventors: Rudolf Kirchmayr, Werner Fussenegger, Hugo Illy
  • Patent number: 4288561
    Abstract: A foamable thermoplastic injection moldable composition comprising in admixture (a) a polyester resin, (b) a filler selected from the group consisting of fibrous glass or a mineral or mixtures thereof in an amount of from about 5 to about 50 weight percent and (c) a minor amount of a foaming agent. The compositions can also include flame retardant additives.
    Type: Grant
    Filed: February 22, 1978
    Date of Patent: September 8, 1981
    Assignee: General Electric Company
    Inventors: Donald I. Craft, Morton Kramer
  • Patent number: 4280005
    Abstract: A foamable flame-retardant thermoplastic injection moldable composition comprising in admixture (a) a polyester resin, (b) a filler selected from the group consisting of fibrous glass or a mineral or mixtures thereof in an amount of from about 5 to about 50 weight percent, (c) a flame-retardant additive and (d) a minor amount of a foaming agent.
    Type: Grant
    Filed: September 24, 1979
    Date of Patent: July 21, 1981
    Assignee: General Electric Company
    Inventor: Daniel W. Fox
  • Patent number: 4278769
    Abstract: A blowing agent concentrate comprising a chemical blowing agent and a thermoplastic composition vehicle therefore, said thermoplastic composition being a saturated polyester and/or copolyester having a crystalline melting point between 100.degree. C. and 220.degree. C. and a reduced viscosity of 0.4 dl/g to 1.6 dl/g; the use of such blowing agent concentrate in the formation of foamed articles of high molecular weight polyalkyleneterephthalate which articles can be filled and/or reinforced and/or flame proofed and can contain other additives. Particularly contemplated is the use of such blowing agent concentrate in the formation of glass fiber reinforced structural foam moldings of polyalkyleneterephthalates especially polytetramethylene terephthalates.
    Type: Grant
    Filed: February 21, 1979
    Date of Patent: July 14, 1981
    Assignee: Dynamit Nobel AG
    Inventors: Peter Gebauer, Karl G. Sturm
  • Patent number: 4276247
    Abstract: Novel processes and compositions are provided for the preparation of foamed, crosslinked polyethylene utilizing cyclic peroxyketal crosslinking/blowing agents. The novel compositions include esters of thiodipropionic acid as activators.
    Type: Grant
    Filed: February 19, 1980
    Date of Patent: June 30, 1981
    Assignee: Argus Chemical Corporation
    Inventors: John R. Muenchow, Ronald L. Pastorino, Reidar Halle, Roger N. Lewis
  • Patent number: 4272583
    Abstract: Particulate expandable styrene polymers which contain an organic bromine compound as the flameproofing agent and an organic compound possessing a labile C--C, O--O or N.dbd.N bond as the synergistic agent for flameproofing. The flameproofing agent is applied to the surface of the particles while the synergistic agent is homogeneously incorporated into the particles.The polymers can be converted to self-extinguishing foams.
    Type: Grant
    Filed: July 21, 1980
    Date of Patent: June 9, 1981
    Assignee: BASF Aktiengesellschaft
    Inventors: Klaus Hahn, Herbert Naarmann, Klaus Penzien, Heinz Weber
  • Patent number: 4266040
    Abstract: A reaction product of (1) resin containing a plurality of electron deficient ethylenically unsaturated groups and (2) a polyazlactone. The product may be formed without the liberation of a gas and cured at a higher temperature with the liberation of a gas to thereby form foamed product.
    Type: Grant
    Filed: June 27, 1980
    Date of Patent: May 5, 1981
    Assignee: DeSoto, Inc.
    Inventor: Shiow-Ching Lin
  • Patent number: 4264469
    Abstract: Thermoplastic resin foams such as polyethylene foams having excellent appearance can be produced with high foaming stability by using a blowing agent composition comprising (a) azodicarbonamide, (b) dinitrosopentamethylenetetramine, and (c) a phenolic or propionate compound such as 1,3,5-tris(3,5-di-t-butyl-4-hydroxybenzyl)-s-triazine-2-4-6-(1H, 3H, 5H)trion.
    Type: Grant
    Filed: July 23, 1979
    Date of Patent: April 28, 1981
    Assignee: Hitachi Chemical Company, Ltd.
    Inventors: Yutaka Yamaguchi, Atsuo Sasama
  • Patent number: 4258138
    Abstract: Method of foaming thermoplastic polymeric materials using as blowing agents polycyclic fused ring heterocycles containing the tetrazole moiety.
    Type: Grant
    Filed: October 15, 1979
    Date of Patent: March 24, 1981
    Assignee: The Dow Chemical Company
    Inventor: Thomas C. Britton
  • Patent number: 4247412
    Abstract: A blowing composition comprising azodicarbonamide, a zinc peroxide and a decomposition inhibitor for azodicarbonamide.
    Type: Grant
    Filed: April 17, 1979
    Date of Patent: January 27, 1981
    Assignee: Otsuka Kagaku Yakuhin Kabushiki Kaisha
    Inventors: Shigeaki Ohno, Nobuyuki Aburatani, Nobuyuki Ueda
  • Patent number: 4246359
    Abstract: Fire retarded compositions comprise elastomers derived from conjugated, hydrocarbon dienes in combination with a synergistic, three-component flame retardant system comprising (1) a chlorine- and/or bromine-containing fire-retardant additive, (2) alumina trihydrate and (3) an iron oxide.
    Type: Grant
    Filed: July 5, 1979
    Date of Patent: January 20, 1981
    Assignee: Uniroyal, Inc.
    Inventor: William P. Whelan
  • Patent number: 4220730
    Abstract: A crosslinked, soft, flexible, closed-cell foam of chlorinated high density polyethylene and a process for the preparation thereof, comprising admixing a high density chlorinated polyethylene with a thermally decomposable chemical foaming agent at a temperature below the decomposition temperature of said foaming agent, molding the chlorinated high density polyethylene into desired form at a temperature below the decomposition temperature of the foaming agent, subjecting the molded chlorinated high density polyethylene to irradiation cross-linking at a temperature below the decomposition temperature of said foaming agent and contacting, in a substantially oxygen-free environment, the crosslinked chlorinated high density polyethylene with a heat transfer medium maintained at a temperature of from about 150.degree. C. to about 350.degree. C. for a period sufficient to form the desired product.
    Type: Grant
    Filed: October 16, 1978
    Date of Patent: September 2, 1980
    Assignee: The Dow Chemical Company
    Inventor: Brenton S. Coyne
  • Patent number: 4218511
    Abstract: Particulate self-extinguishing thermoplastic molding compositions based on styrene polymers containing volatile blowing agents are surface-coated with an organic bromine compound and, to stabilize the bromine compound against photodegradation, a N-hydroxyphenylbenzotriazole or a hydroxybenzophenone. The molding compositions may be used for the manufacture of foams by expanding the blowing agents at elevated temperatures.
    Type: Grant
    Filed: December 1, 1978
    Date of Patent: August 19, 1980
    Assignee: BASF Aktiengesellschaft
    Inventors: Klaus Hahn, Manfred Walter, Karl Stange, Heinz Weber
  • Patent number: 4209473
    Abstract: A crosslinked, soft, flexible, closed-cell foam of suspension chlorinated high density polyethylene and a process for the preparation thereof, comprising admixing a high density suspension chlorinated polyethylene with a thermally decomposable chemical foaming agent at a temperature below the decomposition temperature of said foaming agent, molding the chlorinated high density polyethylene into desired form at a temperature below the decomposition temperature of the foaming agent, subjecting the molded chlorinated high density polyethylene to irradiation crosslinking at a temperature below the decomposition temperature of said foaming agent and contacting, in a substantially oxygen-free environment, the crosslinked chlorinated high density polyethylene with a heat transfer medium maintained at a temperature of from about 150.degree. C. to about 350.degree. C. for a period sufficient to form the desired product.
    Type: Grant
    Filed: January 4, 1979
    Date of Patent: June 24, 1980
    Assignee: The Dow Chemical Company
    Inventor: Brenton S. Coyne
  • Patent number: 4208486
    Abstract: Organic amides, solutions of polymers thereof, which polymers are subject to hydrolysis and degradation in the presence of amines, and polymers isolated therefrom are stabilized by the presence of aromatic sulfonic acid esters of aliphatic, arylaliphatic and alicyclic alcohols and polyols.
    Type: Grant
    Filed: December 8, 1978
    Date of Patent: June 17, 1980
    Assignee: Exxon Research & Engineering Co.
    Inventor: Tad L. Patton
  • Patent number: 4201705
    Abstract: Polyolefin compositions comprising a polyolefin and a flame retarding amount of the pentate salt of an amino-s-triazine are intumescent and self-extinguishing and non-dripping.
    Type: Grant
    Filed: August 28, 1978
    Date of Patent: May 6, 1980
    Assignee: Borg-Warner Corporation
    Inventors: Yuval Halpern, Clifton T. Fleenor
  • Patent number: 4192922
    Abstract: The invention provides finely grained, expandable particles of a styrene homopolymer or copolymer which contain an expanding agent and a flameproofing organic halogen compound as well as, in addition a 2,4-diamino-1,3,5-triazine derivative.
    Type: Grant
    Filed: February 21, 1979
    Date of Patent: March 11, 1980
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Johann Mixich, Horst Jastrow
  • Patent number: 4181983
    Abstract: A porous, hydrophilic, assimilable prosthesis is formed by the removal of solvent, without substantial dimensional change, from a solution of (a), an assimilable polymer composed primarily of polymerized units of an alpha or beta hydroxy carboxylic acid, preferably but not necessarily those having 1 to 4 carbon atoms, and (b), a small amount of a physiologically acceptable wetting agent that is sufficient to impart hydrophilicity to the prosthesis. The preferred assimilable polymer is a polylactic acid. The preferred process for making the prosthesis involves the lyophilization of a solution of polylactic acid having a molecular weight of at least 100,000, weight average, at a concentration of at least 31/2% by weight of the solution of the polylactic acid. A variety of physiologically acceptable wetting agents is useful, a preferred class being the alkali metal soaps of fatty acids or of alkyl aryl sulfonic acids.
    Type: Grant
    Filed: August 29, 1977
    Date of Patent: January 8, 1980
    Inventor: R. K. Kulkarni
  • Patent number: 4174420
    Abstract: Flame resistance of upholstered furniture is significantly improved by interposing between the cover fabric and the padding or applying to the top side of the cover fabric a layer of neoprene foam capable of forming when exposed to a burning cigarette or under the conditions of a standard flame spread test, a thermally insulating char which does not smolder, and which maintains its structural integrity. The neoprene foam must be so formulated that it also is capable of evolving at combustion temperature sufficient amount of water to efficiently cool the affected area. Normally, the latex from which the foam is prepared is formulated with a char promoter and a hydrated inorganic compound. Upholstered furniture of this invention passes a burning cigarette test and performs extremely well in the flame spread test.
    Type: Grant
    Filed: April 29, 1975
    Date of Patent: November 13, 1979
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Colin Anolick, Vivian M. Robinson, Charles W. Stewart, Sr.
  • Patent number: 4174432
    Abstract: Shaped flame retardant rigid thermoplastic foams are provided having high impact strength and superior smoke density and superior radiant panel test values. Blends of dichloroethylene bisphenol polycarbonate and a high performance thermoplastic polymer, such as isopropylidene bisphenol polycarbonate are injection foam molded under melt conditions to a variety of shaped structures.
    Type: Grant
    Filed: February 8, 1979
    Date of Patent: November 13, 1979
    Assignee: General Electric Company
    Inventor: George E. Niznik
  • Patent number: 4170697
    Abstract: Silicon halides will react chemically with polyols to produce polyol silicate resinous products which will react chemically with polyisocyanates to produce polyisocyanate silicate solid or cellular solid products.
    Type: Grant
    Filed: June 23, 1978
    Date of Patent: October 9, 1979
    Inventor: David H. Blount
  • Patent number: 4158724
    Abstract: Tris-tetrazoles of formula I, ##STR1## wherein A is alkylene and R is hydrogen, alkyl or phenyl, are suitable blowing agents for thermoplastic resins, especially for polycarbonates and aromatic polyethers. The foaming process can be carried out at a temperature range of 230.degree. to 300.degree. C., the resulting foamed articles have a fine and homogeneous cellular structure.The tris-tetrazoles I can be synthesized from the corresponding tris-nitriles or tris-imidchlorides by reaction with an alkali azide.
    Type: Grant
    Filed: September 11, 1978
    Date of Patent: June 19, 1979
    Assignee: Ciba-Geigy Corporation
    Inventors: Hugo Illy, Werner Fussenegger
  • Patent number: 4158086
    Abstract: A flameproof thermoplastic molding material based on a styrene polymer and containing from 0.05 to 5 percent by weight of an organic bromine compound as the flameproofing agent, with or without a blowing agent, wherein the bromine compound contains a heterocyclic ring, comprising the group ##STR1## IN ITS MOLECULE, AND IS HEAT-STABLE UP TO AT LEAST 150.degree. C. The preferred bromine compound has the formula ##STR2## The molding materials may be used for the manufacture of self-extinguishing moldings, eg. foam moldings.
    Type: Grant
    Filed: July 28, 1978
    Date of Patent: June 12, 1979
    Assignee: BASF Aktiengesellschaft
    Inventors: Helmut Hagen, Herbert Naarmann, Klaus Penzien
  • Patent number: 4146598
    Abstract: A crosslinked, soft, flexible, closed-cell foam of chlorinated high density polyethylene and a process for the preparation thereof, comprising admixing a high density chlorinated polyethylene with a thermally decomposable chemical foaming agent at a temperature below the decomposition temperature of said foaming agent, molding the chlorinated high density polyethylene into desired form at a temperature below the decomposition temperature of the foaming agent, subjecting the molded chlorinated high density polyethylene to irradiation crosslinking at a temperature below the decomposition temperature of said foaming agent and contacting, in a substantially oxygen-free environment, the crosslinked chlorinated high density polyethylene with a heat transfer medium maintained at a temperature of from about 150.degree. C. to about 350.degree. C. for a period sufficient to form the desired product.
    Type: Grant
    Filed: August 9, 1976
    Date of Patent: March 27, 1979
    Assignee: The Dow Chemical Company
    Inventor: Brenton S. Coyne
  • Patent number: 4129531
    Abstract: A method is provided for crosslinking polymers at temperatures above 170.degree. C using azo-esters having the formula ##STR1## wherein R.sup.3 is --OOC--R, alkyl, cycloalkyl or aralkyl.
    Type: Grant
    Filed: December 14, 1977
    Date of Patent: December 12, 1978
    Assignee: Pennwalt Corporation
    Inventors: Kurt Rauer, Harald Hofmann, Heidelinde Schiller, Chester S. Sheppard
  • Patent number: 4127718
    Abstract: Tris-tetrazoles of formula I, ##STR1## wherein A is alkylene and R is hydrogen, alkyl or phenyl, are suitable blowing agents for thermoplastic resins, especially for polycarbonates and aromatic polyethers. The foaming process can be carried out at a temperature range of 230 to 300.degree. C, the resulting foamed articles have a fine and homogenous cellular structure.The tris-tetrazoles I can be sythesized from the corresponding tris-nitriles or tris-imidchlorides by reaction with an alkali azide.
    Type: Grant
    Filed: October 5, 1977
    Date of Patent: November 28, 1978
    Assignee: Ciba-Geigy Corporation
    Inventors: Hugo Illy, Werner Fussenegger
  • Patent number: 4124557
    Abstract: Flame-retardant and low-smoke plasticized polyphosphazenes are disclosed. The plasticizers are substituted cyclotriphosphazenes and cyclotetraphosphazenes.
    Type: Grant
    Filed: March 23, 1978
    Date of Patent: November 7, 1978
    Assignee: Armstrong Cork Company
    Inventors: Ronald L. Dieck, Edwin J. Quinn
  • Patent number: 4111860
    Abstract: A process for the manufacture of a multicellular stretched sheet which comprises melt compounding a thermoplastic matrix polymer and an additive comprising a polymeric or non-polymeric organic compound or a metal salt of an organic acid, forming the blend into a shaped article and stretching the article at a temperature within the normal orientation temperature of the matrix polymer and below the glass-transition temperature of the polymeric additive or below the melting or softening point of the non-polymeric additive.
    Type: Grant
    Filed: October 29, 1974
    Date of Patent: September 5, 1978
    Assignee: Bakelite Xylonite Limited
    Inventor: James Jack
  • Patent number: 4104195
    Abstract: Blowing agents comprising urea dicarboxylic acid anhydride do not give rise to discoloring decomposition residues nor form acid or alkaline by-products. These blowing agents may be used for expanding thermoplastic resins.
    Type: Grant
    Filed: September 25, 1975
    Date of Patent: August 1, 1978
    Assignee: Bayer Aktiengesellschaft
    Inventors: Kurt Ley, Hermann Hagemann, Helmut Hurnik
  • Patent number: 4102808
    Abstract: A cellular elastomeric product is prepared by the curing of a froth prepared by whipping air into an aqueous dispersion of colloidal elastomer, said aqueous dispersion containing a latex frothing agent consisting of an aqueous solution containing about 70% water and about 25% magnesium di(lauryl sulfate), about 2.5% polyalkoxyglycerol having about eight alkoxy groups per hydroxyl and about 2.5% of a quaternary, dihydroimidazole derivative, there being a fatty acid carbon chain attached as the only carbon-carbon linkage for the carbon between the two nitrogens of the imidazole ring, the quaternary nitrogen partaking of the nature of a quaternary sodium glycinate having at such quaternary nitrogen both an alkhydroxy group and said dihydroimidazole ring.
    Type: Grant
    Filed: June 1, 1977
    Date of Patent: July 25, 1978
    Assignee: Arco Polymers, Inc.
    Inventor: Daniel Charles Straka
  • Patent number: 4101464
    Abstract: Cellular polymeric solids are made by mixing an acidulous or acidic polymerizable medium that is polymerizable and/or cross-linkable by a free radical mechanism (e.g. an unsaturated polyester) with an effective amount of two or more acid sensitive mono- or poly-azo compounds containing the group: ##STR1## wherein Y is an acid sensitive group (e.g.
    Type: Grant
    Filed: September 16, 1976
    Date of Patent: July 18, 1978
    Assignee: Pennwalt Corporation
    Inventors: Ernest Rudolph Kamens, Donald Milton Kressin, Harold Carl Lange, Ronald Edward MacLeay