Patents Assigned to Dynamit Nobel
  • Arylsulfonic acid bromophenyl esters, their preparation, and their use as flameproofing agents
    Patent number: 4116934
    Abstract: Aryl sulfonic acid esters of the formula ##STR1## wherein R.sup.1 represents hydrogen, alkyl groups of 1 to 8 carbon atoms, bromine or chlorine, R.sup.2 represents R.sup.1 or the group ##STR2## Hal represents bromine or chlorine, x the numbers 2 to 4, n the numbers 3 to 5, y the numbers 4-x; m = 5-n, R.sup.3 represents bromine, chlorine or the group ##STR3## and Z represents --O--, --S--, ##STR4## alkylene with 1 to 4 carbon atoms, or alkylidene; a process for their product and their use as a flame retardant, especially for polyolefins.
    Type: Grant
    Filed: May 2, 1977
    Date of Patent: September 26, 1978
    Assignee: Dynamit Nobel Aktiengesellschaft
    Inventors: Egon Norbert Petersen, Hermann Richtzenhain
  • Method of preparing phthalide
    Patent number: 4116976
    Abstract: Method of preparing phthalide by hydrogenolysis of 3-chlorophthalide in the presence of a nobel metal catalyst, wherein hydrogenolysis is carried out in the absence of HCl acceptor.The phthalide which is produced is a valuable chemical intermediate for the manufacture of dyes, plant protecting agents and pharmaceuticals.
    Type: Grant
    Filed: April 1, 1977
    Date of Patent: September 26, 1978
    Assignee: Dynamit Nobel Aktiengesellschaft
    Inventors: Fritz Englander, Jurgen Amort
  • Method of preparing silicon-nitrogen compounds
    Patent number: 4115427
    Abstract: A process for preparing a silicon-nitrogen compound of the formula (R.sub.3 Si).sub.n NR'.sub.3-n or R.sub.2 Si(NR'.sub.2).sub.2 or RSi(NR'.sub.2).sub.3 or cyclic --R.sub.2 SiNR'--.sub.x wherein n is 1 or 2 or 3, R' is a hydrogen atom or an alkyl moiety of 1 to 8 carbon atoms or aryl moiety, R represents an alkyl moiety of 1 to 20 carbon atoms or aryl moiety and x is 3 or 4, by contacting a hydrogen silane of the formula R.sub.4-y SiH.sub.y where y is 1 or 2 or 3 and R has the above-described meaning with an ammonia or an amine of the formula NR'.sub.3-n H.sub.n' where R' and n have the above meanings in the presence of a catalyst.
    Type: Grant
    Filed: August 29, 1977
    Date of Patent: September 19, 1978
    Assignee: Dynamit Nobel Aktiengesellschaft
    Inventors: Hans-Joachim Kotzsch, Rudiger Draese, Hans-Joachim Vahlensieck
  • Fabric-reinforced sealing sheets
    Patent number: 4113907
    Abstract: A fabric-reinforced sealing sheet formed of a synthetic thermoplastic resin suitable for sealing large areas of structures including building constructions, underground constructions and the like by the spot-like or strip-shaped mounting to the structures, which has a reinforcing fabric embedded within a mass of thermoplastic synthetic resin. The fabric is provided at spaced intervals with fabric-reinforcing strips which extend throughout the fabric-reinforced sealing sheet.
    Type: Grant
    Filed: September 3, 1975
    Date of Patent: September 12, 1978
    Assignee: Dynamit Nobel Aktiengesellschaft
    Inventors: Karl Haage, Dieter Scharff
  • Unsaturated polyesters derived from chloroxylylene diols
    Patent number: 4113703
    Abstract: An improvement in an unsaturated polyesters having recurring units of the formula ##STR1## wherein A is the residue of an alcoholic moiety and B is the residue of an acid moiety, which improvement resides in the fact that some of the A residues are chloroxylylene containing residues having the formula ##STR2##
    Type: Grant
    Filed: December 12, 1975
    Date of Patent: September 12, 1978
    Assignee: Dynamit Nobel Aktiengesellschaft
    Inventors: Georg Blumenfeld, Norbert Vollkommer
  • Method of preparing orthosilicic acid alkyl esters
    Patent number: 4113761
    Abstract: A process for preparing an orthosilicic acid tetraalkyl ester having 2 to 6 carbon atoms in the ester group which comprises contacting metallic silicon with an alcohol corresponding to the ester group in the presence of the corresponding alkali alcoholate:A. in the presence of a surface active substance;B. in the presence of a compound containing a methoxy group; orC. under pressure at a temperature above the boiling point of the reaction mixture.
    Type: Grant
    Filed: July 19, 1976
    Date of Patent: September 12, 1978
    Assignee: Dynamit Nobel Aktiengesellschaft
    Inventors: Gerhard Kreuzburg, Arnold Lenz, Walter Rogler
  • Method of preparing phthalide
    Patent number: 4113741
    Abstract: Method for preparing phthalide by the catalytic dehalogenation of 3-chlorophthalide in the presence of hydrogenation catalyst and in the presence of an HCl acceptor.The phathalide which is produced is a valuable chemical intermediate for the manufacture of dyes, plant protecting agents and pharmaceuticals.
    Type: Grant
    Filed: April 1, 1977
    Date of Patent: September 12, 1978
    Assignee: Dynamit Nobel Aktiengesellschaft
    Inventors: Helmut AUS DER Funten, Wilhelm Vogt
  • Process for the production of flexible explosive formed charges
    Patent number: 4113811
    Abstract: A process for producing flexible formed explosive charges includes the steps of admixing at least one elastomer which exhibits an elongation of at least 800% and a tear strength of between 50 and 350 kp./cm.sup.2, at least one high-brisance explosive component and at least one plasticizer that has a melting point of less than -20.degree. C. and that does not substantially evaporate up to a temperature of 90.degree. C. and thereafter forming the resulting admixture into a shaped or formed explosive charge. The high-brisance explosive component has a detonating velocity of at least 6000 m/sec.
    Type: Grant
    Filed: July 6, 1976
    Date of Patent: September 12, 1978
    Assignee: Dynamit Nobel Aktiengesellschaft
    Inventors: Werner Helfgen, Gerhard Lindner, Paul Lingens, Helmut Kaufmann
  • Method of preparing polyester varnish resins of low viscosity
    Patent number: 4113702
    Abstract: A process for the preparation of a varnish resin having a viscosity of 1000 to 4000 cP, an acid number from 0 to 1 and an OH number between 100 and 250, useful in the absence of a solvent, by a two-step process involving condensation of a polycarboxylic acid or anhydride with a polyalcohol in a first step until there is obtained an intermediate resin whose acid number is between 10 and 80 and whose viscosity is between 30,000 and 180,000 cP and wherein in the second step there is added to the resultant resin from the first step a glycidyl ester of a saturated aliphatic carboxylic acid and the same is condensed with the resultant resin at a temperature of 110 to 150.degree. C until the acid number of the resin is between 0 and 1 and the resin has a viscosity between 1000 and 4000 cP.
    Type: Grant
    Filed: July 22, 1975
    Date of Patent: September 12, 1978
    Assignee: Dynamit Nobel Aktiengesellschaft
    Inventor: Erich Psencik
  • Method of preparing polymers analogous to enzymes
    Patent number: 4111863
    Abstract: A non-swellable three-dimensional polymer having a component which is a residue of an optically active compound, which residue is chemically removable from said polymer to leave behind in the physical structure of said polymer a void corresponding to the size and shape of said residue of optically active compound, and a particular steric arrangement of functional groups within the void of said polymer corresponding to the chemical structure of said residue of optically active compound, the original polymer having recurring units of the formulas ##STR1## wherein A, C and D are residues bonded to B of compounds which residues are polymerizable or polycondensable and B is a residue of an optically active compound; a process for preparing such polymer and the form of such polymer containing such void and free of the residue of optically active compounds.
    Type: Grant
    Filed: April 16, 1975
    Date of Patent: September 5, 1978
    Assignee: Dynamit Nobel Aktiengesellschaft
    Inventors: Gunter Wulff, Ali Sarhan
  • Process for the manufacture of light colored dipropyleneglycol dibenzoate
    Patent number: 4112240
    Abstract: Process for production of dipropyleneglycol dibenzoate isomer mixture of the formulas: ##STR1## A crude methyl benzoate containing at least 80 wt.% methylbenzoate, which is a by-product of production of dimethylterephthalate by catalytic oxidation of p-xylene and/or methyl-p-toluate and esterification of the resulting acids with methanol, is contacted with dipropylene glycol commercial isomer mixture in the presence of a catalyst for a transesterification to produce said benzoate. The catalyst is an aluminum alkoxide or an aluminum silicon alkoxide containing the group Al O Si. The product is obtained in good yield, has good color, and is useful as a plasticizer for PVC.
    Type: Grant
    Filed: August 9, 1976
    Date of Patent: September 5, 1978
    Assignee: Dynamit Nobel Aktiengesellschaft
    Inventors: Hans Leo Hulsmann, Gustav Renckhoff
  • Transparent polyamides
    Patent number: 4111921
    Abstract: A polyamide composition, useful in the preparation of transparent sheets, having improved resistivity toward solvents containing moieties of terephthalic acid and 2-methylpentamethylenediamine, said polyamide characterized by a content of moieties of 2-ethyltetramethyldiamine and/or of isophthalic acid in a concentration totalling 15 to 30 mole percent, with respect to the sum of all diamine moieties or all dicarboxylic acid moieties, as the case may be.
    Type: Grant
    Filed: September 21, 1976
    Date of Patent: September 5, 1978
    Assignee: Dynamit Nobel Aktiengesellschaft
    Inventors: Gerhard Bier, Franz Blaschke, Helmut AUS DER Funten, Gerhard Schade
  • Method of hardening liquid resols
    Patent number: 4111911
    Abstract: Process for hardening liquid resols comprising using for the hardening, strong acids which if they are solid at room temperature are used in the form of their mixtures with inert finely divided solid diluents or if they are liquid or gaseous at room temperature adsorbed onto an adsorbing agent.
    Type: Grant
    Filed: September 25, 1975
    Date of Patent: September 5, 1978
    Assignee: Dynamit Nobel Aktiengesellschaft
    Inventors: Franz Weissenfels, Hans Junger
  • Heptabromodibenzofuran, highly brominated dibenzofurans and the preparation and use thereof as flame retardants
    Patent number: 4111902
    Abstract: Brominated dibenzofuran of the formula ##STR1## WHEREIN X + Y = 6.0 TO 7.0 AND Y = 0 TO 0.3. The brominated dibenzofuran can be prepared by reaction of bromine and dibenzofuran at 0.degree. and 150.degree. C in the presence of halogenation catalyst. The products are useful as flameproofing agents for organic polymers, e.g. polyethylene.
    Type: Grant
    Filed: July 29, 1976
    Date of Patent: September 5, 1978
    Assignee: Dynamit Nobel Aktiengesellschaft
    Inventors: Hermann Richtzenhain, Klaus Schrage
  • Method of preparing 2-aryl benzoxazoles and 2-aryl benzothiazoles
    Patent number: 4107169
    Abstract: A method is provided for the preparation of 2-arylbenzoxazoles and 2-arylbenzthiazoles which comprises reacting a trichloromethyl-substituted aromatic compound with an aromatic compound carrying one amino group and one hydroxy or mercapto group in ortho position to each other. The compounds obtained by the process of the invention form the basis of numerous optical brighteners and find use in dyes, cosmetics, pharmaceuticals and heat-resistant fibers.
    Type: Grant
    Filed: April 20, 1977
    Date of Patent: August 15, 1978
    Assignee: Dynamit Nobel Aktiengesellschaft
    Inventor: Klaus Schrage
  • Temperature-compensating propellant charge
    Patent number: 4106960
    Abstract: A propellant charge composition comprising individual powder particles of a nitrocellulose propellant coated with a coating of an acrylic resin and a process for its preparation. Also disclosed is a propellant charge composition of the type described containing a second propellant.
    Type: Grant
    Filed: January 27, 1977
    Date of Patent: August 15, 1978
    Assignee: Dynamit Nobel Aktiengesellschaft
    Inventors: Heinrich Brachert, Johannes Eich
  • Halogen-containing aromatic ether-ester fire-retardants for plastics
    Patent number: 4105628
    Abstract: Aryloxymethylbenzoic acid phenyl ester of the formula ##STR1## wherein X represents oxygen or sulfur, and each R represents residue of a mononuclear or polynuclear phenol which can be substituted. The ester can be produced by reacting the corresponding chloromethylbenzoic acid phenyl ester with the alkali salt of the phenol corresponding to the aryl group of said aryloxymethyl group. The products are useful as additives for plastics to impart flame resistance thereto.
    Type: Grant
    Filed: September 30, 1976
    Date of Patent: August 8, 1978
    Assignee: Dynamit Nobel Aktiengesellschaft
    Inventor: Egon N. Petersen
  • Method of preparing carboxylic acid chlorides of the benzene series
    Patent number: 4104300
    Abstract: In a process for preparing substituted or unsubstituted carboxylic acid chlorides of the benzene series by contacting the corresponding carboxylic acid ester with an aromatic compound containing at least one nuclearly bound trichlormethyl group in the presence of a molybdenum catalyst, the improvement which comprises introducing into the reaction mixture prior to distillation of the carboxylic acid chloride a complexing agent which complexes with the molybdenum catalyst.
    Type: Grant
    Filed: July 7, 1977
    Date of Patent: August 1, 1978
    Assignee: Dynamit Nobel Aktiengesellschaft
    Inventors: Gunter Zoche, Hermann Richtzenhain, Wilhelm Vogt
  • Water-dispersible ester resin containing a moiety of polyacid or bivalent alcohol containing a sulfo group
    Patent number: 4104262
    Abstract: A water-dispersible polycondensation polyester resin having moieties of at least one polycarboxylic acid and at least one polyvalent alcohol having a terminal hydroxyl group, said polyester having a molecular weight between 300 and 3,000, a softening point between 30.degree. and 60.degree. C, said polyester additionally containing an amount of 1 to 5 mole percent based upon the moieties of polycarboxylic acid or polyvalent alcohol; moieties of an alkali metal-sulfo group containing polycarboxylic acid or polyvalent alcohol; aqueous dispersions of such water-dispersible polyester resin and the use of such water dispersions as baked upon lacquer compositions.
    Type: Grant
    Filed: April 8, 1976
    Date of Patent: August 1, 1978
    Assignee: Dynamit Nobel Aktiengesellschaft
    Inventor: Gerhard Schade
  • Method of hardening and foaming liquid resols using a mixture of diluent and aromatic sulfonic acid
    Patent number: 4102832
    Abstract: Process for hardening liquid resols comprising using for the hardening, strong acids which if they are solid at room temperature are used in the form of their mixtures with inert finely divided solid diluents or if they are liquid or gaseous at room temperature adsorbed onto an adsorbing agent.
    Type: Grant
    Filed: October 22, 1976
    Date of Patent: July 25, 1978
    Assignee: Dynamit Nobel Aktiengesellschaft
    Inventors: Franz Weissenfels, Hans Junger