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| Number | Title | Issue Date |
| 5523466 | Diacylperoxide esters Disclosed is a diacylperoxide vinyl ester of the general formula I ##STR1## in which R is an alkylene residue which can be straight-chained, branched or cyclic and which can contain 2 to 10 C atoms or R is an aryl residue, suitable for copolymerizati... | 06/04/1996 |
| 4859751 | Process for emulsion polymerization A novel process for the preparation of a readily dispersible, pourable dispersion powder comprising emulsion polymerizing in the presence of a free radial initiator a mixture of 1 to 50% by weight of ethylene and 99 to 50% by weight of an ethylenically un... | 08/22/1989 |
| 4847341 | Novel polymerization process A process for the preparation of finely-divided aqueous copolymer dispersions with a solids content of 10 to 70% by weight, based on the dispersion, comprising emulsion polymerizing (a) 1 to 50% by weight of ethylene and (b) 99 to 50% by weight of at leas... | 07/11/1989 |
| 4839153 | Process for purification of HCl from pyrolysis of EDC In a process for the purification of hydrogen chloride from the pyrolysis of 1,2-dichloroethane, optionally after a preceding step of acetylene removal by selective hydrogenation under specific conditions followed by rectification of the resulting mixture... | 06/13/1989 |
| 4831077 | Novel-heat resistant adhesives An aqueous adhesive dispersion containing, based on the total weight of the dispersion, 40 to 65% by weight of a copolymer formed by radical copolymerization of ethylene, acrylic esters having alkyl groups of 4 to 12 carbon atoms, vinyl acetate, ethylenic... | 05/16/1989 |
| 4822932 | Heat recovery in production of vinyl chloride by pyrolysis of dichloroethane In a method of treating the reaction product of pyrolysis of 1,2-dichloroethane to form vinyl chloride and hydrogen chloride with multiple stage cooling and distillation separation of the reaction product and recycle of unreacted 1,2-dichloroethane to the... | 04/18/1989 |
| 4792591 | Process for reducing the halogen content of halogen-containing polycarbosilanes and polysilanes A process for reducing the halogen content of polycarbosilanes and/or polysilanes containing halogen bonded directly to silicon atoms by reacting the polymers with hexamethyldisilazane.... | 12/20/1988 |
| 4788357 | Vinyl chloride production An improved method of producing vinyl chloride by pyrolysis of purified 1,2-dichloroethane at temperatures from 480° C. to 540° C. at a pressure of 10 to 36 bar absolute with partial utilization of the heat content of the flue gases from the pyrolysis f... | 11/29/1988 |
| 4754088 | Process for oxychlorination of ethylene In a process for preparation of 1,2-dichloroethane by chlorination of ethylene-containing reaction vent gases from the oxychlorination of ethylene in the presence of a catalyst carrier impregnated with metal compounds wherein the waste from the oxychlorin... | 06/28/1988 |
| 4752639 | Flexible-to-soft shaped articles containing a vinyl chloride-acrylic acid ester graft copolymer A flexible to soft shaped article containing a vinyl chloride-acrylic acid ester graft copolymer containing 20 to 60% by weight of acrylic acid ester polymer and 40 to 80% by weight of vinyl chloride and 0 to 30% by weight of other ethylenically unsaturat... | 06/21/1988 |
| 4748202 | Novel aqueous dispersions A process for the production of an emulsion polymerization aqueous copolymer dispersion with a solids contents of 45-55% by weight of (a) 75 to 95 parts by weight of acrylic acid and/or methacrylic acid alkyl esters of 1 to 10 carbon atoms of which 20 to 80% b... | 05/31/1988 |
| 4746759 | Process for thermal cracking of 1,2-dichloroethane to form vinyl chloride An improved process for the preparation of vinyl chloride from 1,2-dichloroethane (EDC) wherein 0.10 to 0.15 % by weight of carbon tetrachloride based on EDC, is used as a cracking promoter and the CHCl3 content is limited to less than 200 ppm.... | 05/24/1988 |
| 4661569 | Method of inhibiting polymer deposition on reactor walls during free-radical polymerization In a process of polymerizing ethylenically unsaturated compounds by polymerization of ethylenically unsaturated monomers in the presence of a free radical-forming initiator system and optionally customary protective colloids and/or emulsifiers and optiona... | 04/28/1987 |
| 4606742 | Novel heat recovery process In a method of recovering heat from flue gas resulting from the combustion of chlorinated organic compounds at 900° to 1300° C. at a pressure of 0.9 to 1.5 bar absolute whereby the flue gas is cooled with the recovery of heat and hydrogen chloride is pr... | 08/19/1986 |
| 4599437 | Continuous process for varying molecular weight of organopolysiloxanes In a process for varying the molecular weight of linear or cyclic organopolysiloxanes in the presence of a catalyst which is solid in the reaction mixture at the reaction temperature, the improvement comprising that the catalyst which is solid in the reac... | 07/08/1986 |
| 4567297 | Preparation of aqueous N-methylol amide solutions A process for the preparation of aqueous solutions of N-methylol-acrylamide and/or N-methylol-methacrylamide comprising forming a homogeneous mixture of aqueous solution of formaldehyde and aqueous solution of acrylamide and/or methacrylamide and passing ... | 01/28/1986 |
| 4560724 | Aqueous polymer dispersions preparation A process for the preparation of aqueous polymer dispersions comprising polymerizing compounds with unsaturated ethylenic bonds at a temperature of 10° to 100° C. in the presence of an at least partially water-soluble free-radical initiator and at least... | 12/24/1985 |
| 4542184 | Process for aqueous polymer dispersion by polymerizing unsaturated ethylenic compounds A process for the preparation of aqueous polymer dispersions comprising polymerizing compounds with unsaturated ethylenic bonds at a temperature of 10° to 100° C. in the presence of an at least partially water-soluble free-radical initiator and at least... | 09/17/1985 |
| 4536534 | Alkaline resistant primer and the use thereof An aqueous primer based on alkali-soluble acrylic resins and siliconates, especially suitable for strongly alkaline substrates, for example, asbestos cement articles, is provided. The primer is characterized by stability to storage and good compatibility ... | 08/20/1985 |
| 4532295 | Polymerization process for aqueous polymer dispersions of vinyl esters and ethylenic monomers A process for the preparation of aqueous polymer dispersions comprising polymerizing vinyl esters and up to 50% by weight of the total monomer of compounds with unsaturated ethylenic bonds at a temperature of 10° to 100° C. in the presence of an at leas... | 07/30/1985 |
| 4528337 | Process and apparatus for manufacturing vinyl chloride polymers A process for the manufacture of vinyl chloride polymers or copolymers by microsuspension polymerization of vinyl chloride or vinyl chloride and up to 30% by weight, based on the total monomer content, of -olefinically unsaturated monomers copolyme... | 07/09/1985 |
| 4528315 | Process for the preparation of polymer dispersions and their application A process for the preparation of aqueous dispersions, also emulsion (co)polymerization of vinyl halides and/or vinyl esters and, if needed, additional monomers in the absence of emulsifying agents are described. Protective colloid is added after the initi... | 07/09/1985 |
