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Huels Aktiengesellschaft Patents
Assignee:
Huels Aktiengesellschaft
Address:
Marl, DE
No. of patents:
570
Patents:


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Patent Number Title Of Patent Date Issued
6613861 POLYADDITION PRODUCTS CONTAINING HYDROXYL AND URETDIONE GROUPS, PROCESS FOR THEIR PREPARATION, T September 2, 2003
Polyaddition products containing hydroxyl and uretdione groups, a process for their preparation, their use for the production of highly reactive polyurethane (PUR) powder coatings which are free from elimination products and which crosslink to give light-stable and weather-stable coa
6437074 Blocked polyisocyanates, a process for their preparation, and their use August 20, 2002
Partially or totally blocked polyisocyanates comprising physical mixtures of individual a) urethane-functional and/or b) biuret-functional and/or c) isocyanurate-functionalaliphatic and (cyclo)aliphatic and/or cycloaliphatic diisocyanate whose isocyanate groups are blocked in such a
6368587 Bioactive surface coating using macroinitiators April 9, 2002
A process for the bioactive coating of the surface of substrates, which entails graft polymerizing at least one vinyl monomer of the formula (I):in which R is an olefinically unsaturated organic radical, having the valence a,A is a carboxyl group --COOH, sulfuric acid group --OSO.sub.2 OH, s
6262298 Process for the C-alkylation of malonic esters using phase-transfer agents July 17, 2001
The invention relates to a process for the C-alkylation of dialkyl malonates, in which a dialkyl malonate is reacted with an alkyl halide in the presence of potassium carbonate as a hydrogen halide acceptor in an inert solvent, and a phase-transfer catalyst is not added until from 50 to
6255516 Process for preparing fluoroalkyl-containing organosilicon compounds, and their use July 3, 2001
Fluoroalkyl organosilicon compounds are prepared by reacting fluoroolefins with organosilicon compounds that contain at least one H-Si group, in the presence of a Pt(0) complex catalyst. Further, fluoroalkylalkoxy organosilicon compounds are prepared by esterifying fluoroalkyl organo
6255513 Stable compositions of water-soluble amino-and alkenyl-functional organosiloxanes, process for t July 3, 2001
The present invention relates to a stable composition of water-soluble organosiloxanes obtained by reactinga) a water-soluble amino-functional alkoxysilane with at least one water-insoluble alkenyl-functional alkoxysilaneb) by adding water to form a mixture, andc) removing the alcohol formed
6248917 Process for the preparation of 2-hydroxybenzonitrile June 19, 2001
2-Hydroxybenzonitrile is prepared by passing 2-hydroxybenzamide in the gas phase over a heterogeneous catalyst thereby effecting dehydration of the 2-hydroxybenzamide to produce 2-hydroxybenzonitrile.
6248811 Bioactive surface coating June 19, 2001
A process is disclosed for preparing bioactive, covalently fixed coatings on the surfaces of substrates, by grafting to a surface of the substrate a coating polymer which contains the following monomers in copolymerized form:(i) at least one monomer of the general formula:in whichR is a
6245281 Use of a nylon-12 for selective laser sintering June 12, 2001
A process for producing shaped articles are prepared by a process comprising selectively laser sintering a nylon-12 pulverulent material having the following characteristics:
6243616 Method and device for producing three-dimensional objects June 5, 2001
Method and device for producing three-dimensional objects in layers, comprising treating pulverulent, in particular, polymer, substrates or polymerizable monomers by means of microwave radiation.
6242630 Process for the continuous preparation of 3-halopropylorganosilanes June 5, 2001
A process for the continuous preparation of 3-halopropylorganosilanes of the general structurewhere:R is CH.sub.3, C.sub.2 H.sub.5, C.sub.3 H.sub.7, OCH.sub.3, OC.sub.2 H.sub.5 or OC.sub.3 H.sub.7,X is F, Cl, Br or I,Y is F, Cl, Br or I, anda and b are each one of the numbers 0, 1, 2 or 3 an
6239194 Surface-modified fillers, process for their preparation and their use May 29, 2001
The present invention relates to surface-modified fillers obtained by mixing a filler with water, adding an water-based organosiloxane composition with very thorough mixing, wherein the organosiloxanes are soluble in water and contain, in addition to OH groups, at least one amino-fun
6235848 Crosslinkable molding material May 22, 2001
A crosslinkable molding material is provided that includes:(a) 3 to 98 parts by weight of one or more thermoplastics and(b) 2 to 97 parts by weight of a substantially amorphous poly-.alpha.-olefin which is grafted with a silane which has at least one olefinic double bond and one to three alk
6228936 Fluoroalkyl-functional organopolysiloxane-containing compositions May 8, 2001
The present invention provides an aqueous alcoholic fluoroalkyl functional group containing organopolysiloxane composition, which includes organopolysiloxanes of formula I:wherein A, B, C, D, R, R.sub.2, X, z, y, a, b, c, d and e are defined in the claims. The present invention also prov
6218567 Process for preparing hydroxybenzoic esters of oxo alcohols April 17, 2001
A process for preparing hydroxybenzoic esters of oxo alcohols, which comprises:esterifying a hydroxybenzoic acid with an oxo alcohol in the reaction mixture from the hydroformylation of olefins, which reaction medium contains various materials which are found in such a reaction medium, i
6218492 Water insoluble bacteriophobic polymers containing carboxyl and sulfonic acid groups April 17, 2001
The invention relates to water-insoluble, bacteriophobic and optionally cell proliferation-inhibiting polymers obtainable by free-radical polymerization of (a) at least one monomer of the general formula R--(A).sub.a, in which R is an aliphatically unsaturated organic radical with th
6218477 Aqueous binders based on polybutadiene April 17, 2001
A water-soluble or water-dispersible binder based on polybutadienes which is modified with at least 5% by weight of maleic anhydride and wherein at least 30% of the anhydride groups are present as imide groups from reaction with an amino carboxylic acid.
6204351 Blocked polyisocyanates with built-in hals stabilizer March 20, 2001
Partially or completely blocked polyisocyanates having an built-in HALS stabilizer.
6203856 Process for the preparation of antimicrobial plastics March 20, 2001
Antimicrobial activity is imparted to the surface(s) of an apparatus or article by a method, comprising:copolymerizing tertbutylaminoethyl methacrylate with at least one other aliphatically unsaturated monomer in the presence of said apparatus or article by which adhesion of the copolyme
6201093 Amino-functional polyorganosiloxanes, their production and use March 13, 2001
Water-soluble, i.e. easily dispersible, amino-functional polyorganosiloxanes obtained by radical polymerization of vinyl compounds containing amino or ammonium groups onto polyorganosiloxanes which contain at least one mercapto group. They are suitable as textile finishing aids, surf
6180817 Process for the distillation of crude ester in the DMT/PTA process January 30, 2001
A process for preparing crude dimethyl terephthalate, comprises oxidizing a mixture comprising para-xylene and methyl para-toluate, esterifying the oxidized mixture with methanol, separating the resulting crude ester into fractions. By separating the crude ester with a distillation colum
6177582 Fluoroalkyl-functional organosiloxane-containing compositions based on alcohol, a process for th January 23, 2001
An alcoholic fluoroalkyl-functional group containing organosiloxane based composition is prepared by the controlled hydrolysis of at least one fluoroalkyl-functional group containing organosilane of formula I:in which R.sup.1 is a mono, oligo- or perfluorinated alkyl group having 1-9 C a
6166247 Method for preparing cyclopropanecarboxylic acids December 26, 2000
The invention relates to a novel method for preparing cyclopropanecarboxylic acids by acidolysis of the corresponding esters, using an alkylbenzenesulfonic acid represented by the formula: ##STR1## as the reaction catalyst, where m+n is 5 to 15. Process-engineering improvements a
6166164 Blocked polyisocyanates, a process for their preparation, and their use December 26, 2000
Partially or totally blocked polyisocyanates comprising physical mixtures of individuala) urethane-functional and/orb) biuret-functional and/orc) isocyanurate-functionalaliphatic and (cyclo)aliphatic and/or cycloaliphatic diisocyanate whose isocyanate groups are blocked in such a way that th
6162385 Composite comprising a polyamide-based molding composition and vulcanized fluoroelastomers December 19, 2000
Composite comprising a polyamide-based molding composition and vulcanized fluoroelastomers. Composite articles comprising at least two subcomponents which are firmly joined to one another which comprise i) a vulcanizate and ii) a polyamide containing thermoplastic whereina) said polyamid
6161879 Two-component connector December 19, 2000
A connector for connecting an assembly to a pipe, which is highly leakproof with respect to the medium to be transported and is secure against separation under axial load. The connector comprises two materials A and B which swell to different degrees. A part comprising the more strongly
6160075 Two-component (PU) polyurethane coating composition with high environmental and mechanical resis December 12, 2000
A two-component polyurethane coating composition essentially comprising (A) a polyols component, (B) a polyisocyanate component, wherein the polyisocyanate component (B) comprises at least 30% by weight of a polyisocyanate based on 2-methylpentane-1,5-diisocyanate and a polyisocyanat
6156863 Urea- and uretdione-functional polyisocyanates December 5, 2000
A urea- and uretdione-functional polyaddition compound having free, partially or totally blocked isocyanate groups and having the following structure: ##STR1## wherein the substituents are defined as follows: ##STR2## n: 1-20; R.sub.1 is R or a linear, branched or cyclic alky
6156214 Process for removing mercury from alkali metal alkoxide solutions December 5, 2000
A three-stage process for removing mercury contaminants from alcoholic alkali metal alkoxide solutions is provided, in which mercury is depleted in a first filtration through inert fibrous material, followed by a second filtration through pulverized coal, and then by concentration by
6150569 Process for preparing lower and higher alkali metal alkoxides, in particular potassium tert-buto November 21, 2000
A process for preparing an alkali metal alkoxides by reacting an alkali metal amalgams and alcohols in the presence of a catalysts comprising a transition metal carbide, nitride or carbonitride, where the catalyst is in the form of a powder.
6150550 Process for preparing alkoxysilanes November 21, 2000
A process for preparing alkoxysilanes by reacting alcohols with halosilanes which are dissolved in a nonpolar solvent that is immiscible with the alcohol.
6149836 Liquid solutions of dicarboxylic acids November 21, 2000
Liquid melts of dicarboxylic acid have a tendency to undergo unwanted discoloration on prolonged storage. By means of a solution of the dicarboxylic acids in a lactam of an aliphatic .alpha.,.omega.-aminocarboxylic acid, the discoloration can be avoided.
6147239 Process for preparing n, n'-disubstituted p-quinonediimines, their use and organosilanes contain November 14, 2000
The invention relates to a process for preparing N,N'-disubstituted p-quinonediimines of general formula I ##STR1## wherein a corresponding N,N'-disubstituted p-phenylenediamine is oxidized in alkaline/alcoholic solution, and also their use. The invention further provides organos
6143920 Process for the preparation of methoxyacetic acid esters November 7, 2000
The invention relates to a process for the preparation of methoxyacetic acid esters in which a chloroacetic acid ester is reacted with an alkali metal methoxide to give the methoxyacetic acid ester.
6143841 Coatings based on thermoplastic polyesters with addition of an unsaturated polyester as additive November 7, 2000
A coating formulation comprises (A) a base polyester consisting of the copolymerization product of at least one aliphatic, cycloaliphatic and/or aromatic polybasic acid and/or anhydride thereof or at least one hydroxycarboxylic acid or derivative thereof and at least one diol, and (B
6140514 Process for the preparation of macrocyclic esters or lactones October 31, 2000
A process for the preparation of macrocyclic esters or lactones in a two-stage reaction, which entails effecting linear oligomerization of monomers having a number of carbon atoms corresponding to the macrocycle and effecting cyclizing deoligomerization, wherein both steps are conduc
6136871 Process for the preparation of polyolefinic particle foam October 24, 2000
Polyolefinic particle foams containing additives may be produced by a process, which comprises(a) initially charging a pressure-resistant reactor with a dispersion consisting essentially of polyolefin particles and a liquid dispersion medium, and also a mixture of a volatile organic blow
6131618 Process for thermoforming pipes by means of an HF field October 17, 2000
A thermoforming process for forming a plastic pipe using a high-frequency field to introduce the required heat. The pipes thermoformed according to the invention are used, for example, in the motor vehicle sector.
6121482 Amphiphilic compounds with at least two hydrophilic and at least two hydrophobic groups based on September 19, 2000
The invention concerns amphiphilic compounds of general formula (I), in which R.sup.1 and R.sup.3 each represent a C.sub.1 -C.sub.22 hydrocarbon residue, R.sup.2 is a spacer and X and Y are functional groups. The proposed compounds have at least two hydrophilic and at least two hydro
6121466 Process for the preparation of macrocyclic esters September 19, 2000
The invention relates to a process for the preparation of a macrocyclic ester of the general formula: in which m is an integer from 6 to 14 and n is an integer from 2 to 12.
6119743 Tire tread of butadiene copolymer, polybutadiene and aromatic oil September 19, 2000
A tire tread comprises a copolymer of butadiene with isoprene and/or styrene having a room temperature elasticity of between 5 and 35% at 22.degree. C., polybutadiene rubber and an aromatic oil selected from the group consisting of an aromatic oil, naphthenic oil, paraffinic oil, and a
6118015 Water-containing solutions of acrylic-functionalized organosilanes September 12, 2000
The present invention relates to water-containing solutions of acrylic-functionalized organosilanes of the general formula I ##STR1## in which R is a methyl or ethyl group, having a starting-material concentration of organosilane of between 10 and 80% by weight. The present inven
6117331 Processes for the purification of waters containing organic constituents September 12, 2000
Conventional regenerative adsorptive methods for the purification of waters of organic constituents are limited in their application, when owing to a low content of organic water constituents the loading of the adsorbers is so low that the condensed water vapor desorbate no longer has a
6107496 Process for the preparation of cyclic esters August 22, 2000
A process for the preparation of cyclic esters of the general formula: ##STR1## in which m is an integer from 6-14 and n is an integer from 2-6, which comprises heating a dicarboxylic acid bis(glycol) ester of the general formula:in which m and n are as defined above,(b) optionally,
6100408 Process for preparing 3-glycidyloxypropyltrialkoxysilanes August 8, 2000
The invention relates to a process for preparing 3-glycidyloxypropyltrialkoxysilanes of the general formulain which R is an alkyl radical, by reacting allyl glycidyl etherwith a trialkoxysilane of the general formulain which R is again an alkyl radical, in a heterogeneous, platinum-catalyzed
6096805 Stable and high solids aqueous dispersions of blocked polyisocyanates August 1, 2000
A stable and high-solids aqueous dispersion of blocked isocyanates, containing auxiliary solvent, is prepared by (1) preparing a solution of a polyisocyanate mixture of from 20-70% by weight of a blocked, hydrophilically modified polyisocyanate (A) and from 30-80% by weight of a bloc
6096800 Process for the preparation of antimicrobial plastics August 1, 2000
Antimicrobial activity is imparted to the surface(s) of an apparatus or article by polymerizing tert-butylaminoethyl methacrylate in the presence of the apparatus or article by which adhesion of the polymer to the surface(s) is achieved. In a preferred embodiment of the invention the
6096369 Process for hydrophilicizing the surface of polymeric substrates with a macroinitiator as primer August 1, 2000
The invention relates to a process for making the surface of polymeric substrates hydrophilic, which includes coating the surface of a polymeric substrate with a solution of a macroinitiator, wherein the macroinitiator includes a polymer framework and side chains attached to the polymer
6096171 Process for the distillation of crude ester in the DMT/PTA process August 1, 2000
A process for purifying a crude ester containing dimethyl terephthalate, includes flash distilling a mixture including para-xylene and methyl para-toluate, and separating the crude ester into fractions. By separating the crude ester with a distillation column containing structured packin
6093817 Process for preparing a reduced-color isocyanurate-functional polyisocyanate prepared from 1 July 25, 2000
A reduced-color isocyanurate-functional polyisocyanate is prepared by partially trimerizing 1-isocyanato-3,3,5-trimethyl-5-isocyanatomethylcyclohexane (IPDI) having a low total chlorine content of less than 80 mg/kg in the presence of a catalyst, thereby resulting in a product isocya
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