Patents Assigned to Dynamit Nobel
  • Method for preparation of orthosilicic acid tetraalkyl esters
    Patent number: 4224234
    Abstract: An improvement in the preparation of orthosilicic acid tetraalkyl esters by reaction of metallic silicon with alcohol in the presence of alkali alcoholate is disclosed, the improvement residing in carrying out the reaction in the co-presence of an ether alcohol or alkanolamine as cocatalyst.
    Type: Grant
    Filed: April 16, 1979
    Date of Patent: September 23, 1980
    Assignee: Dynamit Nobel Aktiengesellschaft
    Inventors: Wilhelm Flick, Hermann Richtzenhain, Volker Hunger, Wilhelm Joch
  • Polyvinylidene fluoride compositions of improved thermal stability
    Patent number: 4220572
    Abstract: A heat stabilized polyvinylidene fluoride composition comprising polyvinylidene fluoride and a stabilizing amount of a phosphinate.
    Type: Grant
    Filed: May 30, 1978
    Date of Patent: September 2, 1980
    Assignee: Dynamit Nobel Aktiengesellschaft
    Inventors: Wolfgang Rohlfing, Peter Vanheiden
  • Process for coating an inorganic silicatic substrate
    Patent number: 4219591
    Abstract: A process for coating an inorganic silicatic substrate is described wherein the substrate is contacted with a copolymer of vinylacetate and a vinylalkoxysilane followed by water removal.
    Type: Grant
    Filed: April 18, 1978
    Date of Patent: August 26, 1980
    Assignee: Dynamit Nobel Aktiengesellschaft
    Inventors: Robert Buning, Gerhard Bier
  • Method of preparing phthalide
    Patent number: 4216153
    Abstract: A method has been invented for the preparation of phthalide which comprises chlorinating o-toluic acid at 30.degree.-260.degree. C. and recovering the phthalide obtained.
    Type: Grant
    Filed: August 4, 1978
    Date of Patent: August 5, 1980
    Assignee: Dynamit Nobel Aktiengesellschaft
    Inventors: Klaus D. Steffen, Fritz Englaender
  • Siliceous dioxolane derivatives and their application to the manufacture of organosilane esters containing epoxy groups
    Patent number: 4213908
    Abstract: Glycidyloxypropylalkoxysilanes are produced by thermal treatment of novel siliceous dioxolane derivatives of the formula: ##STR1## wherein a is 0 or 1 and R represents an oxygen radical or two hydrogen atoms and R' and R" each represents an alkyl radical, wherein the R" 's can be the same or different. The glycidyl products are useful as adhesives.
    Type: Grant
    Filed: November 26, 1975
    Date of Patent: July 22, 1980
    Assignee: Dynamit Nobel Aktiengesellschaft
    Inventors: Hans-Joachim Kotzsch, Hans-Joachim Vahlensieck
  • Process for the side-chain chlorination of perhalogenated methyl aromatic compounds
    Patent number: 4212996
    Abstract: Process for the side-chain chlorination of aromatic compounds completely halogenated in the nucleus, containing methyl groups, and having the general formulas: ##STR1## wherein y=1 or 2, z=0 to 1, x=6-(y+z), n=0 to 8 and k=(8-n) and the methyl groups are, respectively, in the ortho, meta or para position to one another and in the p-position to the oxygen bridge, by thermal chlorination in the liquid phase. The bis-monochloromethyl compounds of formula (II) are novel compounds. The chlorination products are useful as intermediates.
    Type: Grant
    Filed: May 15, 1978
    Date of Patent: July 15, 1980
    Assignee: Dynamit Nobel Aktiengesellschaft
    Inventors: Egon N. Petersen, Hermann Richtzenhain, Klaus Schrage
  • Process of preparing 3-bromophthalide
    Patent number: 4211710
    Abstract: 3-Bromophthalide is produced by reaction of o-toluic acid with bromine or a bromine supplying substance according to the equation: ##STR1##
    Type: Grant
    Filed: May 1, 1978
    Date of Patent: July 8, 1980
    Assignee: Dynamit Nobel Aktiengesellschaft
    Inventor: Klaus-Dieter Steffen
  • Method of preparing phthalide
    Patent number: 4211711
    Abstract: A method has been invented for preparing phthalide by catalytic hydrogenation with a Periodic Table, Group VIII catalyst of a phthalide substituted in the 3-position by a hydroxyl, methoxy or acetoxy group.
    Type: Grant
    Filed: August 4, 1978
    Date of Patent: July 8, 1980
    Assignee: Dynamit Nobel Aktiengesellschaft
    Inventors: Helmut aus der Funten, Wilhelm Vogt
  • Acrylate-based polymers and copolymers and their use as flameproofing agents
    Patent number: 4211730
    Abstract: A polymer having as a component thereof a moiety corresponding to a monomer having the following formula ##STR1## wherein n=0 or 1, X is bromine, chlorine or a mixture thereof and R represents hydrogen or methyl, a method of preparing the same and the use of such a polymer, including a copolymer thereof in a plastic composition containing a normally flammable plastic.
    Type: Grant
    Filed: July 10, 1978
    Date of Patent: July 8, 1980
    Assignee: Dynamit Nobel Aktiengesellschaft
    Inventors: Norbert Vollkommer, Egon N. Petersen, Herbert Klinkenberg, Werner Schmidt
  • Process for the manufacture of refractory ceramic products
    Patent number: 4211567
    Abstract: A ceramic molding composition comprising an alcoholate of aluminum or a metal of the fourth sub-group of the Periodic System, a refractory metal oxide and a polyvalent alcohol, an improvement in the formation of a ceramic product wherein a ceramic molding composition is shaped and hardened, which improvement resides in employing the above defined ceramic molding composition.
    Type: Grant
    Filed: June 22, 1978
    Date of Patent: July 8, 1980
    Assignee: Dynamit Nobel Aktiengesellschaft
    Inventors: Werner Dittrich, Walter Josten, Heinz Nestler, Friedhelm Schnippering
  • Projectile for practice ammunition
    Patent number: 4208968
    Abstract: A projectile for training ammunition wherein the projectile body is joined at its front end to a dummy detonator. The dummy detonator is constructed as a hollow body and preferably a cap-shaped hollow body.
    Type: Grant
    Filed: August 2, 1977
    Date of Patent: June 24, 1980
    Assignee: Dynamit Nobel Aktiengesellschaft
    Inventors: Gunter Hubsch, Rudolf Stahlmann
  • Hybrid rocket propellant with nitroso derivative of hexamethylene tetramine
    Patent number: 4206006
    Abstract: A rocket fuel is formed by mixing a liquid prepolymer of butadiene having carboxyl groups with hexamethylene tetramine or a nitroso derivative thereof, shaping and hardening.
    Type: Grant
    Filed: September 17, 1965
    Date of Patent: June 3, 1980
    Assignee: Dynamit Nobel Aktiengesellschaft
    Inventor: Heinz Ratz
  • Endless composite sheet material
    Patent number: 4205107
    Abstract: A continuous composite sheet material is formed of a genuine wood sheet bonded by a layer of adhesive to a thermally weldable, thermoplastic synthetic resin carrier sheet. This composite sheet is especially useful as a covering for a profiled structure used in furniture construction or interior decoration.
    Type: Grant
    Filed: October 24, 1978
    Date of Patent: May 27, 1980
    Assignee: Dynamit Nobel Aktiengesellschaft
    Inventors: Hans Jaschke, Rudolf Kautz, Hermann Plate, Horst Ulb
  • Process and apparatus for the extrusion of coated skein-shaped profiles, preferably of thermoplastic synthetic resins
    Patent number: 4204821
    Abstract: A process for producing elongated profile members made of thermoplastic synthetic resins having a coating over at least a portion of their circumference of at least one additional thermoplastic polymeric material which includes the steps of extruding a coating of a thermoplastic secondary material, simultaneously and continuously with the extrusion of the elongated profile member, onto said member while said member is still within the plastic temperature range, and subsequently sizing the resultant coated member.
    Type: Grant
    Filed: September 24, 1973
    Date of Patent: May 27, 1980
    Assignee: Dynamit Nobel Aktiengesellschaft
    Inventors: Peter Gauchel, Waldemar Wissinger
  • Polyvinylidene fluoride compositions, and fabricated products thereof having increased notch impact toughness and elongation at rupture
    Patent number: 4200568
    Abstract: A composition comprising a polyvinylidene fluoride and a fluoroelastomer, especially a fluoroelastomer containing moieties of vinylidene fluoride and hexa- or pentafluoropropylene, and methods for the preparation of formed articles from such composition and formed articles thereof having improved notch impact toughness and elongation at rupture.This is a continuation, filed June 8, 1977, now abandoned, which in turn is a continuation of 609,870 filed Sept. 2, 1975 (now abandoned).
    Type: Grant
    Filed: February 12, 1979
    Date of Patent: April 29, 1980
    Assignee: Dynamit Nobel Aktiengesellschaft
    Inventors: Werner Trautvetter, Gregor Weisgerber
  • 2,5,5-Trimethyl-3-carbalkoxy-4(.beta.,.beta.-di halovinyl)-4,5-dihydrofurans
    Patent number: 4198341
    Abstract: A method of preparing certain dihalogen vinyl cyclopropane carboxylic acid esters of the formula ##STR1## wherein R is an alkyl moiety and X is chlorine or bromine by exposing a dihalogen vinyl dihydrofuran of the formula ##STR2## to light, e.g., ultraviolet light. Also disclosed is a method for preparing such 2,4,4-trimethyl-3-carbalkoxy-5-(.beta.,.beta.-dihalogenvinyl)-4,5-dihydrof urans by reaction of a .beta.-alkoxycrotonic acid ester or 3,3-bisalkoxybutyric acid ester with a 1,1,1-trihalogen-4-methyl-3- or -4-pentene-2-ol in the presence of an acid catalyst. Also disclosed is a method of converting such 2,4,4-trimethyl-3-carbalkoxy-5-(.beta.,.beta.-dihalogenvinyl)-4,5-dihydrof uran by thermal rearrangement into 2,5,5-trimethyl-3-carbalkoxy-4-(.beta.,.beta.-dihalogenvinyl)-4,5-dihydrof urans. Such 2,4,4- and 2,5,5-trimethyl-3-carbalkoxy-5-(.beta.,.beta.-dihalogenvinyl)-4,5-dihydrof urans are new.
    Type: Grant
    Filed: February 9, 1979
    Date of Patent: April 15, 1980
    Assignee: Dynamit Nobel Aktiengesellschaft
    Inventor: Hans-Georg Schmidt
  • Method of preparing dihalogen vinyl cyclopropanecarboxylic acid esters
    Patent number: 4198343
    Abstract: A method of preparing certain dihalogen vinyl cyclopropane carboxylic acid esters of the formula ##STR1## wherein R is an alkyl moiety and X is chlorine or bromine by exposing a dihalogen vinyl dihydrofuran of the formula ##STR2## to light, e.g., ultraviolet light. Also disclosed is a method for preparing such 2,4,4-trimethyl-3-carbalkoxy-5-(.beta.,.beta.-dihalogenvinyl)-4,5-dihydrof urans by reaction of a .beta.-alkoxycrotonic acid ester or 3,3-bisalkoxybutyric acid ester with a 1,1,1-trihalogen-4-methyl-3- or -4-pentene-2-ol in the presence of an acid catalyst. Also disclosed is a method of converting such 2,4,4-trimethyl-3-carbalkoxy-5-(.beta., .beta.-dihalogenvinyl)-4,5-dihydrofuran by thermal rearrangement into 2,5,5-trimethyl-3-carbalkoxy-4-(.beta.,.beta.-dihalogenvinyl)-4,5-dihydrof urans. Such 2,4,4- and 2,5,5-trimethyl-3-carbalkoxy-5-(.beta.,.beta.-dihalogenvinyl)-4,5-dihydrof urans are new.
    Type: Grant
    Filed: February 9, 1979
    Date of Patent: April 15, 1980
    Assignee: Dynamit Nobel Aktiengesellschaft
    Inventor: Hans-Georg Schmidt
  • Method of preparing dihalogen vinyl cyclopropanecarboxylic acid esters
    Patent number: 4198342
    Abstract: A method of preparing certain dihalogen vinyl cyclopropane carboxylic acid esters of the formula ##STR1## wherein R is an alkyl moiety and X is chlorine or bromine by exposing a dihalogen vinyl dihydrofuran of the formula ##STR2## to light, e.g., ultraviolet light. Also disclosed is a method for preparing such 2,4,4-trimethyl-3-carbalkoxy-5-(.beta..beta.-dihalogenvinyl)-4,5-dihydrofu rans by reaction of a .beta.-alkoxycrotonic acid ester or 3,3-bisalkoxybutyric acid ester with a 1,1,1-trihalogen-4-methyl-3-or -4-pentene-2-ol in the presence of an acid catalyst. Also disclosed is a method of converting such 2,4,4-trimethyl-3-carbalkoxy-5-(.beta.,.beta.-dihalogenvinyl)-4,5-dihydrof uran by thermal rearrangement into 2,5,5-trimethyl-3-carbalkoxy-4-(.beta.,.beta.-dihalogenvinyl)-4,5-dihydrof urans. Such 2,4,4- and 2,5,5-trimethyl-3-carbalkoxy-5-(.beta.,.beta.-dihalogenvinyl)-4,5-dihydrof urans are new.
    Type: Grant
    Filed: February 9, 1979
    Date of Patent: April 15, 1980
    Assignee: Dynamit Nobel Atkiengesellschaft
    Inventor: Hans-Georg Schmidt
  • Process for the preparation of orthosilicic acid tetraalkoxyalkyl esters
    Patent number: 4197252
    Abstract: A process for preparing an orthosilicic acid tetraester of a monoalkyl ether of an aliphatic glycol having 2 to 6 carbon atoms which comprises contacting silicon, iron silicide or ferrosilicon with a monoalkyl ether of an aliphatic glycol having 2 to 6 carbon atoms in the aliphatic chain in the presence of the corresponding orthosilicic acid tetraalkoxy alkyl ether at a temperature between 125 and 250.degree. C.
    Type: Grant
    Filed: October 30, 1974
    Date of Patent: April 8, 1980
    Assignee: Dynamit Nobel Aktiengesellschaft
    Inventors: Wilhelm Joch, Arnold Lenz, Walter Rogler
  • Hardenable compositions of improved thermal stability
    Patent number: 4195458
    Abstract: A composition comprising a granular inorganic oxidic material other than glass powder and 1 to 30 weight percent, based on the weight of said material, of glass powder, especially a composition additionally containing a hardenable thermo- or cold-setting phenolic resin, which composition does not disintegrate at high temperatures and retains compressive strength.
    Type: Grant
    Filed: March 10, 1977
    Date of Patent: April 1, 1980
    Assignee: Dynamit Nobel Aktiengesellschaft
    Inventors: Walter Hoppe, Hans Junger, Franz Weissenfels