Research Patents

Number of application: 2424-96 

Number of patent: 283626

Original title: Způsob kontinuálni výroby sekund. a terc. aminů 

Title in English:  A technology for continuous production of second. and tert. amines

First author: Prof. Josef Pašek, MSc, DSc 

Short abstract:

A method for continuous production of secondary and tertiary amines through methylation of primary and secondary amines by formaldehyde at hydrogen pressure from 2 to 10 Mpa over a fixed bed of nickel catalysts at temperature from 80 to 150°C is arranged in the technology. It is based on the invention consisting in the principle that initial material is diluted by methanol in order to achieve the amine - methanol ratio from 1:2 to 1:20, more advantageous ratio falls in the range from 1:5 to 1:8.

Number of application: 1191-95 

Number of patent: 284760

Original title: Způsob přípravy N - methylmorfolinoxidu

Title in English:   A method for preparation of N-methylmorpholine-N-oxide…

First author: Prof. Josef Pašek, MSc, DSc 

Short abstract:

A method for preparation of aqueous solutions of N-methylmorpholine-N-oxide having the compound concentrations from 45 to 70 wt% and low nitrosomorpholine content up to 50 ppb through oxidation of N-methylmorpholine by an aqueous solution of hydrogen peroxide under temperature from 60 to 75°C and the molar ratio of H2O2 : amine falling within 0.5 to 0.9. The method consists in hydrogen peroxide effect on N-methylmorpholine containing at least one of three hydrogen peroxide stabilisers of the group of sodium pyrophosphate, sodium salt of ethylenediaminetetraacetic acid, sodium stannate at total concentration within the range from 0.01 to 0.05 wt% calculated to the basis of the amine amount changed and common comercial form of the stabilisers added including their crystalline water content. It is an advantage to use A-methylmortpholine as its azeotropic mixture with water (73 wt% A-methylmorpholine).

Number of application: 1190-95 

Number of patent: 284545

Original title: Způsob přípravy N - methylmorfolinoxidu

Title in English: A method for preparation of N-methylmorpholine-N-oxide…

First author:  Prof. Josef Pašek, MSc, DSc 

Short abstract:

A method for preparation of N-methylmorpholine-N-oxide solutions having the compound concentrations from 50 to 60 wt% and low nitrosomorpholine content from 100 to 300 ppb trough oxidation of A-methylmorpholine by an aqueous solution of hydrogen peroxide under temperature from 55 to 70°C. The invented method consists in use of the molar ratio of H2O2 : amine falling within 0.4to 0.7, more advantageous from 0.5 to 0.65, while the hydrogen peroxide solution is fed into the amine solution for the period from 2 to 5 hours and then the reaction mixture is left to finish the reaction for 3 to 5 hours. The unreacted N-methylmorpholine in the reaction mixture is removed by vacuum rectification.

Original title: Způsob přípravy N - methylmorfolinoxidu 

Title in English: A method for preparation of N-methylmorpholine-N-oxide…

First author: Prof. Josef Pašek, MSc, DSc 

Short abstract:

A method for preparation of N-methylmorpholine-N-oxide through oxidation of N-methylmorpholine by an aqueous solution of hydrogen peroxide under temperature from 55 to 75°C and the molar ratio of H2O2:amine falling within 0.4 to 0.9, there is advantageous range from 0.5 to 0.7 here, at presence of chelating agents, or potentially, of carbon dioxide, and with unreacted portion of N-methylmorrpholine distilled off under reduced pressure.The method consits in addition of hydrazine at the amount equal to 0.01 to 0.05 wt%, based on the reaction mixture, when hydrogen peroxide is already added and its concentration in the reaction mixture dropped to 0.05 to 0.15 wt%. The reaction mixture is then left to react for a half an hour up to three hours.

Number of application: 1188-95 

Number of patent: 284680

Original title: Způsob přípravy N - methylmorfolinoxidu

Title in English: A method for preparation of N-methylmorpholine-N-oxide…

First author: Prof. Josef Pašek, MSc, DSc  

Short abstract:

A method for production of N-methylmorpholine-N-oxide with low content of nitrosomorpholine through oxidation of N-methylmorpholine by hydrogen peroxide under temperature from 55 to 75 Cand the molar ratio of H2O2: amine falling within 0.5 to 0.9 and reaction time from 5 to 8 hours.The method consists in the extraction from solutions 50 to 70 wt% N-methylmorpholine-N-oxide by a solvent of the group of aromatic hydrocarbons, C4 to C8 ketones, or organic acid esters having total carbon atom number from 4 to 8 at temperature from 10°C to 60°C. The N-methyl morpho-line-N-oxide solutions extracted are obtained by distilling off the unreacted N-methylmorpholine.

Number of application: 3446-97 

Number of patent: 285073

Original title: Směsná bionafta

Title in English: Blended biodiesel

First author: Prof. Karel Pecka, MSc, PhD 

Short abstract:

Blended biodiesel represents a mixture of esters of fatty acids presented in renewable sources of carbon, namely in natural oils and fats with lower molecular alifatic alcohols, namely with methylalcohol and ethylalcohol, and hydrocarbon fraction manufactured from fossil carbon sources, showing the 10% (v/v) point of distillation in the range min. 175°C to 205°C, advantageously190°C, the 65% (v/v) point of distillation in the range min. 240°C to 260°C , advantageously 250°C, 95% (v/v) point of distillation in the range max. 295°C to 310°C, advantageously 300°C and density at 15°C in the range 805 kg.m-3 to 825 kg.m-3, advantageously 815 kg.m-3. The hydrocarbons mixture used contains preferably less than 0,01% (m/m) of sulfur, less than 10% (m/m) aromatic hydrocarbons and less than 0,05% (m/m) of polyaromatics with the more than three aromaticrings in molecule.

Number of application: 1707-95 

Number of patent: 283298

Original title:  Pojivo na bázi semletého slínku portlandského cementu Pojivo na bázi semletého slínku portlandského cementu

Title in English: Mixture on the bases ground Portland cement clinker

First author: Assoc. Prof. Frantiřek Škvára, MSc, DSc 

Short abstract:

Cement based on ground clinker of Portland cement (without gypsum) with specific surface 450-700 m 2/kg, containing ligninsulfonate, sulphonated lignin (pH of lignosulphonate solution hasvalue greater 7.5-8) and salt of alkali carbonate and /or blast furnace slag, fly ash, silica fume,activated clay. This cement has very high initial and final strength, low prosity and superior resis-tance agaist agressive medium (salt).

Number of application: 1092-94 

Number of patent: 280971

Original title: Trysky pro rozprašování kapalin

Title in English: The nozzle for disperzing of liquid by the compressed gas 

First author: Jan Kára, MSc 

Short abstract:

Highly effective nozzle for disperzing of liquid by the compressed gas, which can disperze whatever amount of ever liquid and make aerosol with fluently eligible size of small draps in extent from several units to hundreds microns.

Number of application: 4530-90 

Number of patent: 282132

Original title: Způsob přípravy zeolitů 

Title in English: Preparation of zeolites by hydrothermal decomposition of ash

First author: David Koloušek, MSc, PhD 

Short abstract:

In preparaton of zeolites by hydrothermal decomposition of ash or fly ash modified in aq. solution of alkali metal hydroxides at 80-160°C for 1-168 h.,the power plant ash or fly ash with SiO2:Al2O3 molar ratio of 2.2-4.8 is used. The ash or fly ash may be treated by magnetic sepn. or chem. leaching with HCl prior to the modification step. The obtained zeolites with high sorption capacity are suitable for use in chem. industry.

Number of application: 1248-92 

Number of patent: 277955

Original title: Křišťálové olovnaté sklo s nízkým výluhem olova 

Title in English: Lead crystal glass with low lead leaching

First author:  Prof. L.Šašek, MSc, DSc.

Short abstract:

Lead crystal glass with low lead leaching is intended for the man-made and machine – made utility glassware, especially those of luxurious character, with higher refractive index. The glass contains in % by weight: from 50 to 60 of SiO2,from 24 to 27 of PbO, from 0,1 to 3,5 of Al2O3, from 0,1 to 2 of B2O3, from 1,5 to 7 of CaO, from 6,5 to 11,5 of K2O and from 0,5 to 4,5 of Na2O, the content of Fe2O3 is in the range from 0,01 to 0,02 in % by weight the total sum of PbO and alkaline oxides is lower than 21 (expressed in mole %). The properties of the glass can be further modified by at least one oxide from the group incorporating ZnO, BaO, and MgO in the range from 0,1 to7 in % by weight. Another modifiers are individually or in a combination Sb2O3 and As2O3 in amount from 0,1 to 0,7 in % by weight.

Number of application: 2338-93 

Number of patent: 279603

Original title: Křišťálové bezolovnaté sklo s indexem lomu vyšším než 1,52 

Title in English: Lead-free crystal glass with the refractive index higher than 1,52

First author: Miroslav Rada, MSc, PhD 

Short abstract:

Lead-free crystal glass with the refractive index higher than 1,52 is intended for the man-made utility glasware, especially those of luxurious character, with high lustre and light transmittance.The glass contains SiO2, Al2O3, ZrO2, HfO2, TiO2, CaO, MgO, ZnO, K2O, Na2O, Sb2O3, Fe2O3,sulphates, chlorides and at least one component from the group incorporating Er2O3, Nd2O3,CeO2, CoO,NiO,manganese oxides and selenium compounds. Utility and technological properties are advantageously modified by at least one oxide from the group comprising BaO, B2O3,P2O5 and Li2O and further from the group comprising SnO2, La2O3, Bi2O3, MoO3 and WO3.

Number of application: 843-96 

Number of patent: 283459

Original title: Směsi pro žáruvzdorné účely 

Title in English: Refractory mixture

First author: Václav Ševčík, MSc 

Short abstract:

Mixture for refractory uses, based on ground Portland (silicate) clinker (without gypsum) and admixture of Al2O3 type or hydrated Al2O3 with particle size less than 150um and refractory aggregate.This mixture has the properties comparable with alumina cement with low Al2O3 content. Refractoriness of this mixture is approx. 1230°C.

Number of application: 808-98 

Number of patent: 285072

Original title: Potenometrický senzor

Title in English: Potentiometric sensor 

First author: Assoc. Prof. Radko Volf, MSc, PhD

Short abstract:

Potentiometric sensor for determination of cysteine concentration, consist from body of sensor,in which is placed electrical conductive caster (roll), that is in electrical contact with base of electrode made of chemical indiferent material. On this electrode is incrust layer of polymerized (Co2+)5,15 - bis(2-aminophenyl) - 2,8,12,18 - tetraethyl - 3,7,13,17 tetramethylporphyrine. Base of electrode is made of platinum, gold, graphite or glassy carbon. As a reference electrode with adventage the argentchloride electrode was used.

Number of application: 6777-90 

Number of patent: 277279

Original title: Srovnávací element snímače pracujícícho na principu katalytického spalování 

Title in English: Refence element of the pellistor-senzor

First author: Assoc. Prof. Karel Kadlec, MSc, PhD 

Short abstract:

Reference element (pellistor-compensator) is formed from a coil of the platinum wire.The platinum wire coil is embedded within a ceramic material (for example Al2O3). An amorphous gold layer is formed on the ceramic pellet and with a glass-layer is covered on the outside of the element.

Number of application: 6117-90 

Number of patent: 283461

Original title: Průtočná coulometrická titrační cela s nastavitelnou výškou 

Title in English: The coulometric titration flow-cell

First author: Jiří Krofta, MSc, PhD 

Short abstract:

The coulometric titration flow-cell has been designed for electochemical analysis of substances in passing through gas. The oulometric titration flow-cell is composed of the electrode holder with a gas supply tube, which is terminated by a porous glass insert (frit). The inner coat of the electrodes is situated above the porous glass. The gas outlets are made in the upper part of the coat. A tube of chemically resistant material protrudes onto the coat. Electrode connecting wires are attached to the tube, providing thus a water-tight connection with the electrodes that are fixed at the lower end of the tube.Within the inner covering coat, the tube with electrodes can be moved in the direction of the longitudinal axis of the coulometric titration flow cell.

Number of application: WO 99/48855 

Number of patent: 

Original title: Způsob a zařízení pro výrobu butylacetátu a isobutylacetátu

Title in English: Procces and apparatus for product. of butylacetate and isobutylacetate

First author: Prof. Jiří Hanika, MSc, DSc 

Short abstract:

The invention relates to a procces of butylacetate production by esterification of acetic acid withbutanol in the presence of a solid acidic catalyst in which distillatory separation of components runs simultaneously with esterification. Thus, acetic acid and butanol are introduced in defined amounts and in the molar ratio1:1 to 1:10 into a systém, in which the reaction and the distillatory separation proceeds in three zones. The reaction together with distillatory separation of the components with different boiling points run in the reaction zone, while only distillation takes place in lower and upper separation zones. A volatile mixture is separated in the upper separation zone, from which after being cooled at 5 to 80°C and organic phases are separated, the latest being refluxed into the system.The ratio of the feed amount to the organic phase reflux amount is 1:1 to 1:20 , the reflux amount representing 60 to 100% of the whole amount of the organic phase.

Number of application: 1236-94 

Number of patent: 281637

Original title: Způsob stimulace tvorby bioplynu při anaerobní metanové fermentaci 

Title in English: Method of stimulation of anaerobic digestion and biogas production

First author: Prof. Michal Dohányos, MSc, PhD 

Short abstract:

The method of stimulation of biogas production and acceleration of degradation rate of organicmaterials during anaerobic digestion of sewage sludges, waste biomass and anaerobic waste-water treatment is based on the addition of the cell lysate before/or during fermentation. Cell lysate is considered to be a released content of bacteria cells into a bulk liquid after destruction of cellwalls. The cell lysate is prepared by a rapid thermal conditioning of the biomass from anaerobic reactor by heating at the temperature 100 to 200°C, pressure 0.1 to 1.5 Mpa, pH 6 to 8 for 0.2 to 10 minutes followed by pressure release. The dose of the cell lysate is 0.1 to 20% related to the fermented biomass.

Number of application: 2411-94 

Number of patent: 281728

Original title: Způsob a zařízení ke zpracování fenolátových louhů 

Title in English: The process and device for phenolate liquors treatment

First author: Assoc. Prof. Václav Linek, MSc. PhD 

Short abstract:

The phenolate liquors are treated using a gaseous carbondioxide and organic solvent, which together with diluted phenols makes the separated phase in aqueous medium. The process is realized in two stages under the pressure range from 100 to 1500 kPa and under the temperature range from 40 to 100°C. In the first stage a two phase mixture is formed containing both a sodium carbonate solution and an unsaturated carbolic acid solution (0.5-0.8 mol of bonded CO2 per1 mol of Na+). In the second stage the unsaturated carbolic acid solution is purged by water and saturated by high-percentage (90% of CO2 in minimum) gaseous carbon dioxide.The saturation is carried out up to the bonded and free CO2 content 0.9 mol of CO2 per 1 mol of Na+.