| Patent Number |
Title Of Patent |
Date Issued |
| 4368090 |
Method of using copolyether ester amides as thermoplastic adhesives for heat sealing textiles |
January 11, 1983 |
| Copolyether ester amides having a melting point between about 85.degree. and 140.degree. C. are produced from:(A) lactams or omega-aminocarboxylic acids and/or equivalent amounts of dicarboxylic acids and diamines as polyamide-forming compounds; and(B) dicarboxylic acids and polyalkylene oxi |
| 4366285 |
Process for the production of an elastomer-filler mixture optionally containing extender oils |
December 28, 1982 |
| A process for producing an elastomer-filler mixture optionally containing an extender oil, comprising the combined precipitation of a homogeneous mixture of a synthetic elastomer latex, produced by emulsion polymerization in an anionic emulsifier system, and an aqueous suspension of |
| 4366270 |
Process for uniformly blending additives into thermoplastic synthetic resins |
December 28, 1982 |
| A method for the uniform blending of additives into thermoplastic synthetic resins. A solution or finely divided dispersion of the additive is produced in a polymerizable cyclic ester of the general formula: ##STR1## wherein R represents respectively hydrogen or an alkyl group of 1-1 |
| 4365056 |
Process for producing 2-(C.sub.1 to C.sub.3 alkyl)-.DELTA..sup.2 -oxazoline copolymers |
December 21, 1982 |
| A process for producing linear or slightly branched 2-(C.sub.1 to C.sub.3 -alkyl)-.DELTA..sup.2 -oxazoline copolymers from more than 50 mole % of 2-(isopropyl- and/or n-propyl)-.DELTA..sup.2 -oxazoline and less than 50 mole % of 2-(methyl- and/or ethyl)-.DELTA..sup.2 -oxazoline, the |
| 4364869 |
Process for producing alkyl esters of saturated aliphatic carboxylic acids |
December 21, 1982 |
| A process for the production of alkyl esters of saturated aliphatic carboxylic acids by reacting in an alkoxycarbonylation stage olefins with carbon monoxide and alkanol in the presence of a catalyst consisting of a cobalt compound and a promoter from the group of pyridine, non-ortho |
| 4349661 |
Preparation of polyether ester amides |
September 14, 1982 |
| The process for preparing thermoplastic polyether amides or polyether ester amides from lactams, dicarboxylic acids and polyethers having hydroxyl end groups and amino end groups or polyethers having amine end groups is improved.First, a mixture of lactams having at least 8 C atoms with |
| 4345066 |
Transparent copolyamides and their application to transparent, impact resistant molded articles |
August 17, 1982 |
| Transparent, high molecular-weight copolyamides having high glass transition temperatures, based on:(1) lactams or omega-aminocarboxylic acids;(2) terephthalic acid, isophthalic acid, esters thereof, ester forming derivatives thereof, or mixtures thereof; and(3) mixtures of diamines; the cop |
| 4345064 |
Preparation of polyether ester amides |
August 17, 1982 |
| A process for preparing polyether amides of polyether ester amides by polycondensing polyamides bearing carboxyl end groups with polyethers bearing hydroxyl end groups and/or amino end groups at ordinary or reduced pressure, in the presence of catalysts, the polyamides bearing the end |
| 4345052 |
Method for the preparation of polyether ester amides |
August 17, 1982 |
| Method for manufacturing polyether ester amides by polycondensing at ordinary or reduced pressure, optionally in the presence of catalysts. A hot melt of:(a) polyamides having carboxyl end groups with polyethers having hydroxyl end groups and amino end groups;(b) polyamides having carbox |
| 4340752 |
Process for the purification of terephthalic acid |
July 20, 1982 |
| A process for the purification of terephthalic acid in which a dispersion of the terephthalic acid in a liquid dispersant such as acetic acid is continuously pumped repeatedly through a cycle. Fresh dispersion is fed continuously into the cycle while simultaneously a corresponding amount |
| 4337319 |
Self-extinguishing, fine particulate expandable styrene polymers |
June 29, 1982 |
| Self-extinguishing, fine particulate, expandable styrene polymers for the manufacture of molded articles, containing bromine compounds and one synergist. The synergist, referred to the styrene polymer, is at least one hydrocarbon present in amounts from about 0.1 to 3% by weight and form |
| 4337234 |
Method for preparing sodium bicarbonate and hydrogen chloride |
June 29, 1982 |
| A process for preparing sodium bicarbonate and hydrogen chloride by reacting an aqueous sodium chloride solution with carbon dioxide under pressure in the presence of an amine and of an organic solvent.1. Carbon dioxide is introduced under a pressure of5-80 bars into a mixture essentially co |
| 4334056 |
Method for polytropically precipitating polyamide powder coating compositions where the polyamid |
June 8, 1982 |
| Polyamide powder coating compositions for the coating of metals at high temperatures are obtained by the precipitation method from polyamides having at least 10 aliphatically bound carbon atoms per carbonamide group, copolyamides having at least 70% of these polyamides and mixtures of |
| 4321247 |
Process for preparing sodium bicarbonate and hydrogen chloride |
March 23, 1982 |
| A process for producing sodium bicarbonate and hydrogen chloride by reacting an aqueous sodium chloride solution with carbon dioxide in the presence of an amine and an organic solvent. The steps of the process are carried out, wherein:(1) carbon dioxide is introduced into a mixture conta |
| 4320237 |
Process for the hydroformylation of olefins |
March 16, 1982 |
| Method for the hydroformylation of olefins with carbon monoxide and hydrogen in the presence of soluble cobalt compounds as the catalyst at an elevated temperature and under increased pressure, and optionally in the presence of paraffins and/or other inert diluents. The hydroformylation |
| 4320106 |
Method for preparing sodium bicarbonate and hydrogen chloride |
March 16, 1982 |
| A process for preparing sodium bicarbonate and hydrogen chloride by reacting an aqueous sodium chloride solution with carbon dioxide under pressure in the presence of an amine and of an organic solvent.1. Carbon dioxide is introduced under a pressure of8-80 bars into a mixture essentially co |
| 4310473 |
Process for separating sulfuric acid from sulfoxidation output |
January 12, 1982 |
| The process for separating sulfuric acid from the sulfoxidation output obtained when paraffins are reacted with sulfuric acid, oxygen and water in the presence of ultraviolet light, using an alcohol containing at least 5 C atoms, is improved by treating the sulfoxidation output with a 0. |
| 4310442 |
Supported silver catalysts mixed with promoter metal compounds for the production of ethylene ox |
January 12, 1982 |
| The activity and the service life of supported silver catalysts used in the preparation of ethylene oxide by the catalytic vapor phase oxidation of ethylene with molecular oxygen are extended by using mixtures of:(a) supported silver catalysts and promoter metal compounds;(b) supported silve |
| 4306051 |
Isocyanurate group-and terminally blocked isocyanate group-containing compounds |
December 15, 1981 |
| A method for the production of blocked isocyanate- and isocyanurate group-containing compounds which comprises reacting a monomeric cycloaliphatic polyisocyanate to form an intermediate mixture comprising an isocyanurate containing at least two free isocyanate groups; and blocking th |
| 4305917 |
Method for preparing ammonia and hydrogen chloride from ammonium chloride |
December 15, 1981 |
| According to the present invention, ammonia and hydrogen chloride are prepared from ammonium chloride.The steps of the process include:1. heating a mixture consisting essentially of(a) ammonium chloride,(b) a water-insoluble amine, and(c) an organic solvent;2. evacuating the ammonia released the |
| 4305844 |
Process for the preparation of silver catalysts for the production of ethylene oxide |
December 15, 1981 |
| A process for preparing silver catalysts containing alkaline earth metals and alkali metals as promoters for the production of ethylene oxide by oxidizing ethylene with oxygen or oxygen-containing gases. The silver catalysts are prepared by:(a) depositing a suspension consisting of silve |
| 4302349 |
Adducts of alcohols and olefin oxides, suitable for reducing the interfacial surface tension of |
November 24, 1981 |
| Compounds of the following formula are suitable for reducing the interfacial surface tension of oily phases with respect to water: ##STR1## wherein z is 1 or 2,R, for z=1, is alkyl, aralkyl, or alkylaryl of 8-22 carbon atoms in the alkyl chain, or hydroxyalkyl of 2-22 carbon atoms, a |
| 4288389 |
Process for separating sulfonic acids from the reaction products obtained when parafins are reac |
September 8, 1981 |
| A process for separating sulfonic acids from the reaction product obtained by reacting paraffins with sulfuric acids, oxygen and water in the presence of ultra-violet light where an alcohol is used as an extractant.The reaction product is treated with an aromatic alcohol as the extractant |
| 4287130 |
Reacting olefins with ozone in a carboxylic acid medium |
September 1, 1981 |
| The process for reacting olefins with ozone in a carboxylic acid medium using pure oxygen or an oxygenated gas mixture for the ozone production, is improved by recycling the oxygen or the oxygenated gas mixture leaving the ozonizing stage.The oxygen containing gas leaving the ozonizing s |
| 4286071 |
Self-extinguishing fine particulate expandable styrene polymers |
August 25, 1981 |
| Self-extinguishing, fine particulate, expandable styrene polymers for the manufacture of molded articles, containing bromine compounds and one synergist. The synergist, referred to the styrene polymer, is at least one hydrocarbon present in amounts from about 0.1 to 3% by weight and form |
| 4282389 |
Process for the simultaneous manufacture of pure MTBE and a substantially isobutene-free mixture |
August 4, 1981 |
| A process for the simultaneous manufacture of pure methyl tertiary butyl ether (MTBE) and a substantially isotubene-free mixture of C.sub.4 -hydrocarbons, by reacting the isobutene contained in the mixture of C.sub.4 -hydrocarbons with excess methanol in the liquid phase at elevated |
| 4281036 |
Method for coating fine particulate expandable styrene polymers |
July 28, 1981 |
| Fine particulate expandable styrene polymers have coatings applied thereto by:(a) introducing the fine particulate expandable styrene polymers into a closed mixing vessel;(b) reducing the pressure in the mixing vessel below atmospheric;(c) preparing dispersions of the coating materials and h |
| 4272566 |
Suspension agent for synthetic resin powders |
June 9, 1981 |
| Method of spot coating garment interlinings comprising a suspension agent for synthetic resin powders comprising an aqueous emulsion wherein there is contained, in a concentration of about 1-7.5 percent by weight:(A) a mixture of about 95-40 molar percent of an aminoamide of the general |
| 4259309 |
Method for obtaining gaseous hydrogen chloride from dilute aqueous hydrochloric acid |
March 31, 1981 |
| An improvement in the process for obtaining gaseous hydrogen chloride by extracting dilute aqueous hydrochloric acid with amines wherein:(a) the aqueous hydrochloric acid is extracted with an amine or a mixture of an amine and an inert, water-immiscible solvent boiling at not less than 1 |
| 4256788 |
Process for the coating of glass surfaces |
March 17, 1981 |
| A process for the coating of glass surfaces with a transparent, duroplastic protective layer of more than 50 microns which comprises first treating the clean glass surface with an aqueous or alcoholic silane skim coat, drying the treated surface and then coating the dry surface with a pa |
| 4255551 |
Coating materials and their application prepared from polyisocyanates blocked with imidazolines |
March 10, 1981 |
| Powdered, heat-hardenable coating materials with high storage stability and a grain size smaller than 0.25 mm based upon hydroxy-group-containing polyesters with melting points between 40.degree. and 120.degree. C., blocked polyisocyanates and optionally catalysts, wherein the coating |
| 4255356 |
Purification of tertiary amines using an adsorbent |
March 10, 1981 |
| A method of purifying tertiary amines by removing sec. and prim. amines and/or their hydrochlorides produced in the manufacture of the tertiary amines. The impurities are removed by dissolving the impure tertiary amines in an organic solvent and the resulting solution is passed over |
| 4254092 |
Method for separating hydrogen chloride and hydrogen bromide |
March 3, 1981 |
| A method of separating HBr from a mixture of HBr/HCl using the difference in the stability to heat of the amine hydrohalides thereof. A mixture of HBr/HCl is treated with a solution of an amine and the HCl is split off, by the action of heat, from the amine hydrochlorides in the resultin |
| 4252545 |
Process for the fractional desublimation of pyromellitic acid dianhydride |
February 24, 1981 |
| A process for the fractional desublimation of pyromellitic acid dianhydride in the form of free-flowing crystals which comprises reducing a reaction gas containing pyromellitic acid dianhydride produced by a chemical reaction which also produces by-products, to a temperature above the th |
| 4246380 |
Powdery polyurethane lacquers based on polyester resins and blocked isocyanates |
January 20, 1981 |
| A powdery polyurethane lacquer which comprises (a) a hydroxyl-group containing polyester resin with an OH number of 40-240 and (b) an .epsilon.-caprolactam-blocked polyisocyanate, selected from the group consisting of triisocyanatoisocyanurate of 3-isocyanatomethyl-3,5,5-trimethylcyc |
| 4246132 |
Isocyanurate group-and terminally-blocked isocyanate group-containing mixtures |
January 20, 1981 |
| A method for the production of blocked isocyanate-and isocyanurate group-containing compounds which comprises:transforming a monomeric aliphatic or cycloaliphatic polyisocyanate or a mixture thereof into an intermediate mixture comprising an isocyanurate containing at least 2 free isocya |
| 4242248 |
Storage-stable baking lacquers prepared from polyisocyanates blocked with cyclic amidines |
December 30, 1980 |
| Baking lacquers on the basis of a blend of hydroxy-group-containing polymers, blocked polyisocyanates and organic solvents which comprise40-70 wt. % hydroxy-group-containing polymers with hydroxy numbers between 40 and 240 and polyisocyanates blocked with cyclic amidines of the formula: |
| 4239807 |
Polyamide coated base material having an intermediate layer of polybutadiene |
December 16, 1980 |
| An aqueous polybutadiene dispersion is applied as the adhesive intermediary layer in the preparation of polyamide coatings on metal objects by a process of sintering the polyamide powders.The dispersion contains a liquid polybutadiene with a dynamic viscosity from about 70 to 30,000 mill |
| 4238592 |
Method for production of duroplastic, single-component polyurethanes |
December 9, 1980 |
| A method for the production of single-component polyurethane lacquers which comprises:reacting (1) a polyester having an OH-functionality of at least 2, an OH-count of 70-150 mg KOH/g and a molecular weight of about 800-2500, derived from (A) an acid selected from the group consisting of |
| 4237040 |
Suspension agent for synthetic resin powders |
December 2, 1980 |
| Suspension agent for synthetic resin powders comprising an aqueous emulsion wherein there is contained, in a concentration of about 1-7.5 percent by weight:(A) a mixture of about 95-40 molar percent of an aminoamide of the general formula ##STR1## wherein R represents a saturated |
| 4230681 |
Method of manufacturing hydrogen chloride from solutions of amine hydrochlorides |
October 28, 1980 |
| A method of manufacturing hydrogen chloride by splitting off hydrogen chloride from solutions of amine hydrochlorides. The hydrogen chloride is split off by heating the amine hydrochlorides at 100.degree. to 250.degree. C. in an inert, organic, essentially non-polar solvent having a |
| 4228244 |
Process for preparing fine particle expandable styrene polymers containing small concentrations |
October 14, 1980 |
| The process for the preparation of shaped bodies based on expanded styrene polymers comprising: the polymerization of styrene or a mixture thereof with at least one monomer copolymerizable therewith, the addition of an expanding agent, pre-forming of the resulting expandable particles, a |
| 4219678 |
Process for preparing pure methyl tert.-butyl ether |
August 26, 1980 |
| Process for the preparation of pure methyl tert.-butyl ether. Isobutene or isobutene-containing hydrocarbon mixtures are reacted with methanol in a molar ratio of 1:1 to 1:2 in the liquid phase at temperatures of between 30.degree. and 100.degree. C. on sulfonated, strongly acidic, macro |
| 4217106 |
Alkaline baths containing alkene sulfonates as wetting agents |
August 12, 1980 |
| The mercerizing of cellulose fibers is improved by using an aqueous alkaline bath composition having as a wetting agent alkali salts of alkene sulfonic acids having 6 to 10 carbon atoms and single or double branched structures in a concentration of about 1 to 5 grams per liter of bath |
| 4212785 |
Process for the preparation of copolymers useful as viscosity-raising agents |
July 15, 1980 |
| In a process for the preparation of a viscosity raising copolymer, which comprises copolymerizing at an elevated temperature (a) methacrylic acid, (b) a conjugated diolefin, and (c) an ester of an .alpha.,.beta.-ethylenically unsaturated dicarboxylic acid, an improvement is provided |
| 4200732 |
Process for preparing very viscous heat stable poly(butylene terephthalate) |
April 29, 1980 |
| In a process for preparing very viscous, heat-stable poly(butylene terephthalate) by condensing terephthalic acid, or a lower alkyl ester thereof, with 1,4-butanediol in two stages at an elevated temperature and in the presence of conventional catalysts, an improvement comprises carr |
| 4200725 |
Method of producing blocked polyisocyanates by reaction of an imidazoline with an isocyanate |
April 29, 1980 |
| This invention relates to blocked isocyanates and to a method for making blocked isocyanates by blocking the isocyanate groups of a polyisocyanate, which may be chain extended, with a cyclic amidine compound of the formula ##STR1## where the R's are the same or different substituents |
| 4200703 |
Process for the manufacture of heat-stable, nuclear-brominated polystyrenes |
April 29, 1980 |
| In a process for the manufacture of a heat-stable, nuclear-brominated polystyrene by brominating, at -20.degree. C. to +40.degree. C., a polystyrene dissolved in a chlorinated hydrocarbon in the presence of a Lewis acid catalyst, an improvement is provided wherein the catalyst furthe |
| 4200589 |
Process for preparing acetone from isobutyraldehyde |
April 29, 1980 |
| This is an improvement in the process for preparing acetone by the catalytic, oxidative decarbonylation of isobutyraldehyde in the gaseous phase by passing a mixture consisting of isobutyraldehyde, oxygen and an inert diluent, when desired, at higher temperatures and at contact-times |
| 4200559 |
Anionic paper surface sizing agent |
April 29, 1980 |
| Paper surface sizing agents based on aqueous solutions ofcopolymers of maleic acid anhydride and dicyclopentadiene, which are further reacted after preparation to produce the half amides with ammonia, or primary or secondary aliphatic amines. |
