| Patent Number |
Title Of Patent |
Date Issued |
| 5534601 |
Polyisocyanate-modified dicarboxylic (poly) anhydrides |
July 9, 1996 |
| Polyisocyanate-modified dicarboxylic (poly)anhydrides which are solid below 40.degree. C., liquid above 120.degree. C. and based on the reaction product of organic polyisocyanates with more than equivalent quantities, based on the NCO/COOH reaction, of dicarboxylic (poly)anhydrides c |
| 5470523 |
Process of molding products by rim |
November 28, 1995 |
| The present invention relates to the use of organic compounds which contain epoxide groups and which are subjected to a heat treatment at 30.degree. to 150.degree. C. in the presence of an alkylating agent, as auxiliary substances to increase the weather resistance of molded plastic part |
| 5466794 |
Thermoplastic cellulose ether ester graft copolymers and process for their production |
November 14, 1995 |
| The present invention relates to novel thermoplastic, water-insoluble cellulose hydroxyalkyl hydroxycarboxylic acid esters of the general structurewhere Cell--O is the substituted OH group of a polymeric cellulose unit and R is either a monomeric and/or polymeric hydroxyalkylether hy |
| 5466794 |
Thermoplastic cellulose ether ester graft copolymers and process for their production |
November 14, 1995 |
| The present invention relates to novel thermoplastic, water-insoluble cellulose hydroxyalkyl hydroxycarboxylic acid esters of the general structurewhere Cell--O is the substituted OH group of a polymeric cellulose unit and R is either a monomeric and/or polymeric hydroxyalkylether hy |
| 5292807 |
Compositions of cyclic isourea component with carboxyl component |
March 8, 1994 |
| The present invention relates to compositions which are storage stable at room temperature and containA) at least one compound having at least two cyclic isourea groups per molecule andB) at least one compound having at least two carboxyl groups per molecule,in an amount sufficient to provid |
| 5266405 |
Thermosetting compositions for the production of liquid-crystalline epoxide networks, a process |
November 30, 1993 |
| This invention relates to thermosetting compositions for the production of epoxide networks of very high impact strength, to a process for their preparation and to their use as polymer materials, coating compounds, adhesives and materials for electrical insulation. |
| 5182135 |
Process for improving the adherency of metallic coatings deposited without current on plastic su |
January 26, 1993 |
| Activator formulations which contain an aromatic polyurethane as binder are highly suitable for the preparation of non-metallic substrate surfaces for currentless metallization.The metal coatings produced are distinguished by good adhesion. |
| 5179186 |
Photosetting impression materials |
January 12, 1993 |
| A method of making a dental impression which comprises applying to the structure of which an impression is to be made a special prepolymer. The prepolymer is composed of units of at least one macrodiol, at least one aliphatic polyisocyanate, and an unsaturated monoalcohol as chain te |
| 5144055 |
Liquid crystalline bis-chlorocarbonic acid esters |
September 1, 1992 |
| Liquid crystalline bis-chlorocarbonic acid esters are 4-hydroxybenzoic acid-(4'-hydroxyphenyl) esters corresponding to the following formula ##STR1## wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.4 denote, independently of one another, hydrogen, a halogen atom or a C.sub.1 to C.sub.6 a |
| 5118290 |
Process for preparation of dental impressions |
June 2, 1992 |
| A process for the preparation of a dental impression comprisingA) forming a mixture of a polyaddition product which contains ether, urethane and urea groups,B) mixing therewith water of proton donor-containing aqueous solution in a weight ratio of A:B of from 1:0.01 to 1:40 and in at least c |
| 5090405 |
Water-hardening polymer preparations |
February 25, 1992 |
| In a construction material comprising a flexible carrier substrate impregnated or coated with a water-hardening resin, the resin contains as an additive polyether polysiloxane polyurethanes of the formula ##STR1## in which R.sup.1 is lower alkyl,m is the average number of siloxane gr |
| 5071923 |
Surface-active copolymers and their use for the production of polyurethane powders |
December 10, 1991 |
| The present invention is directed to novel surface active copolymers and the use thereof in the production of polyurethane powders. More particularly, the copolymers comprise have a substantially linear structure and are obtained by copolymerization ofA) a partial reaction product of1) ( |
| 5061756 |
Process for the preparation of polyurethane powders |
October 29, 1991 |
| The present invention is directed to an improved process for the direct preparation of polyurethane powders in a finely divided form by the reaction of polyisocyanates and isocyanate reactive compounds in a carrier phase, using interface active compounds, the improvement wherein the |
| 5049427 |
Laminated polarizers |
September 17, 1991 |
| Laminated polarizers are described comprising a polarizing core layer and adhesive layers on one or both sides, each of which can accept a transparent outer layer, the polarizer being a polymer product containing polyacetylene, whose matrix is a polymer having polar groups, and as ad |
| 5045226 |
Polyisocyanate preparations containing latent tin catalysts and a process for their preparation |
September 3, 1991 |
| Polyisocyanate preparations containing latent tin catalysts are made from an organic polyisocyanate and a reaction product of a sulfonyl isocyanate and an organic tin catalyst in which at least one tin-oxygen bond is present. The organic tin catalyst preferably contains a tin-alkoxy, |
| 5041494 |
Aqueous solutions or dispersions of polyurethanes, a process for their preparation and their use |
August 20, 1991 |
| The present invention is directed to aqueous solutions or dispersions of cationically modified polyurethanes, characterized in that the dissolved or dispersed polyurethanes(i) contain about 2 to 200 milliequivalents of incorporated ammonium groups per 100 g of solids content,(ii) contain |
| 5021536 |
Storage stable resin reaction mixtures, and the preparation and use thereof |
June 4, 1991 |
| This invention relates to storage stable resin reaction mixtures obtained by mixing at least one organic polyisocyanate, at least one organic compound containing at least two epoxide groups, at least one alkylating agent that inhibits the reaction of the polyisocyanate and epoxide co |
| 5015321 |
Adhesive and its use for producing adhesive bonds |
May 14, 1991 |
| A moisture cured adhesive comprising a reaction product of an organic polyisocyanate and an organic polyhydroxyl component which comprises at least one polyether polyol which has been modified by radical polymerization or copolymerization with an olefinically unsaturated monomer is d |
| 4980441 |
Liquid crystalline bis-chlorocarbonic acid esters, a process for their preparation and liquid cr |
December 25, 1990 |
| Liquid crystalline bis-chlorocarbonic acid esters are 4-hydroxybenzoic acid-(4'-hydroxyphenyl) esters corresponding to the following formula ##STR1## wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.4 denote, independently of one another, hydrogen, a halogen atom or a C.sub.1 to C.sub.6 a |
| 4965292 |
Process for strengthening geological formations |
October 23, 1990 |
| The present invention relates to a process for strengthening geological formations in underground mining or underground construction work by the introduction of reaction mixtures which react to form polyurethane plastics into the formations which are required to be strengthened, wher |
| 4929705 |
New polyisocyanate-polyaddition compounds, a process for their preparation and their use for the |
May 29, 1990 |
| New polyisocyanate-polyaddition compounds, a process for their preparation and their use as wetting or dispersing agents for the incorporation of solids, in particular pigments, in lacquer or synthetic resin formulation. |
| 4921996 |
Isocyanato-acylurethanes, a process for their preparation and their use |
May 1, 1990 |
| The present invention relates to isocyanto-acylurethanes corresponding to Formula I ##STR1## wherein R has a valency of m+n and is a hydrocarbon group,R' is a hydrocarbon group andm and n may be identical or different, and each have a value of 1 or 2.The present invention also relates to |
| 4918135 |
Process for the preparation of aqueous polymer dispersions the dispersions obtained by the proce |
April 17, 1990 |
| An improved coating for heat resistant substrates is an aqueous dispersion of polymers prepared by polymerization of olefinically unsaturated monomers in an aqueous medium in the presence of radical formers and emulsifiers, wherein the emulsifiers are polyisocyanate addition products |
| 4904750 |
Ester-urethane derivatives of (meth)-acrylic acid for dental materials |
February 27, 1990 |
| Dental fillings, coatings and teeth are formed of polymers and copolymers of a polyfunctional ester-urethane derivative of (meth)-acrylic acid of the formula ##STR1## in which A is a straight-chain or branched aliphatic radical which has 2 to 20 carbon atoms and optionally contai |
| 4895921 |
Water soluble or dispersible blocked polyisocyanates and a process for their preparation and use |
January 23, 1990 |
| The present invention is directed to water soluble or dispersible blocked polyisocyanates which contain(a) a statistical average per molecule of at least one structural unit corresponding to the formula: wherein B denotes a group obtainable by removal of the acidic hydrogen atom from a m |
| 4868268 |
Process for preparing polyurethanes from an organic diisocyanate ester |
September 19, 1989 |
| Novel polyurethanes are prepared by reacting(a) an organic diisocyanate of formula ##STR1## wherein M represents --CH.dbd.CH--; --N.dbd.N--; --CH.dbd.N--; ##STR2## or and where R.sub.1 through R.sub.4 may be the same or different and represent hydrogen, halogen, CN, CF.sub.3 or |
| 4855484 |
Process for the preparation of 4-hydroxyphenyl 4-hydroxybenzoate and the use thereof |
August 8, 1989 |
| A process for the preparation of 4-hydroxyphenyl 4-hydroxy-benzoate by esterification of hydroquinone and p-hydroxybenzoic acid is described, wherein an esterification catalyst is used and wherein the reaction is carried out in a reaction medium in which the reactants are substantially |
| 4851531 |
Isocyanurate group-containing polyisocyanates |
July 25, 1989 |
| The present invention is directed to isocyanato isocyanurates prepared from diisocyanates which contain a sterically unhindered isocyanate group bound to a primary aliphatic carbon atom and a sterically hindered isocyanate group which is bound to a tertiary carbon atom forming part of a |
| 4837321 |
Process for the preparation of polyisocyanates containing isocyanurate groups |
June 6, 1989 |
| The present invention is directed to a process for the preparation of isocyanurate group-containing polyisocyanates by trimerizing a portion of the isocyanate groups of an organic polyisocyanate and terminating the trimerization reaction by the addition of a catalyst poison, characterize |
| 4826948 |
Impregnating agent and its use |
May 2, 1989 |
| Impregnating agents are provided consisting essentially of(a) an NCO-prepolymer or NCO-semi-prepolymer which is curable by atmospheric moisture, with an NCO content of 2 to 25% by weight, based on(a1) an organic polyisocyanateand(a2) a compound with at least 2 alcohol hydroxyl groups,(b) a solve |
| 4824595 |
Polyisocyanate compositions containing reversibly blocked catalysts and addition products of sul |
April 25, 1989 |
| The present invention relates to polyisocyanate compositions containing reversibly blocked catalysts for the isocyanate addition reaction, characterized in that they contain(a) at least one organic polyisocyanate,(b) at least one addition product dissolved or dispersed in the polyisocyan |
| 4810536 |
Method of impregnating |
March 7, 1989 |
| Impregnating agents are provided consisting essentially of(a) an NCO-prepolymer or NCO-semi-prepolymer which is curable by atmospheric moisture, with an NCO content of 2 to 25% by weight, based on(a1) an organic polyisocyanate and(a2) a compound with at least 2 alcohol hydroxyl groups,(b) a solv |
| 4788224 |
Two stage process for the production of molded articles |
November 29, 1988 |
| Molded articles are produced in a two-stage process. In the first stage, an organic polyisocyanate is reacted with an organic compound containing at least two epoxide groups (NCO: epoxide equivalent ratio of 1.2:1 to 500:1) in the presence of a tertiary amine catalyst. This reaction is s |
| 4764581 |
Liquid-crystalline diglycidyl compounds, the preparation of these, and the use of these in curab |
August 16, 1988 |
| The invention relates to new, liquid-crystalline diglycidyle compounds of optionally ring-substituted 4-hydroxyphenyl 4-hydroxybenzoates, a synthesis of p-epoxypropoxy-phenyl p-epoxy-propoxybenzoate, furthermore epoxy resin mixtures containing the new diglycidyle compounds, and the use |
| 4762901 |
Process for the preparation of polymeric networks having superstructures, corresponding polymeri |
August 9, 1988 |
| A process is described for the preparation of polymeric networks having superstructures, resulting from the use of liquid-crystalline, (poly)functional units, characterized in that build-up into polymers is carried out by the polymerization, polyaddition or polycondensation process w |
| 4748974 |
Laminated dressing |
June 7, 1988 |
| A stiff, water resistant laminated medical or veterinary dressing is described along with a procedure for forming the final hardened dressing. The dressing is obtained by treating a gypsum bandage with an aqueous dispersion of a synthetic resin and then forming a layer from it which is |
| 4739094 |
Alkoxylated aminopolyethers, a process for their preparation |
April 19, 1988 |
| New alkoxylated aminopolyethers of the formula ##STR1## in which Q denotes a polyalkylene oxide radical which has a valency corresponding to n, which has a structure derived from an aminopolyether by removal of the terminal amino groups and which has an average molecular weight o |
| 4728676 |
Thermosetting reactive resin mixtures and a process for the production of moldings using these m |
March 1, 1988 |
| A thermosetting reactive resin mixture is made from an organic polyisocyanate, a polyepoxide and a heat activatable catalyst. The catalyst is a tertiary or quaternary ammonium salt of an alkylating or acidic ester of an organic phosphonic acid or of phosphoric acid. The polyisocyanat |
| 4719244 |
Polyisocyanate preparations and their use for the production of polyurethane plastics |
January 12, 1988 |
| The present invention is directed to polyisocyanate compositions containing(a) at least one organic polyisocyanate and(b) at least one dissolved catalyst corresponding to the general formula ##STR1## wherein R.sup.1 and R.sup.2 may be identical or different and denote hydrogen or a meth |
| 4707539 |
Process for the preparation of thermosetting aliphatic polycarbonate with quaternary salt cataly |
November 17, 1987 |
| The invention relates to a new process for the preparation of thermosetting aliphatic polycarbonates from cyclic aliphatic carbonic acid ester by ring-opening polymerization. |
| 4707386 |
Process for the production of sheet structures |
November 17, 1987 |
| The present invention relates to a process for the production of water- and solvent-resistant coatings by coating substrates with an aqueous coating composition containing as binder a mixture of(1) reaction products, containing anionic structural units of the formula ##STR1## in a q |
| 4689376 |
Heat-hardenable epoxide resin mixtures |
August 25, 1987 |
| This invention relates to heat-hardenable epoxide resin mixtures of at least one 1,2-polyepoxide having more than one 1,2-epoxide group per molecule, at least one cyclic carboxylic acid anhydride and at least one ammonium phosphonate or ammonium phosphate as a hardening catalyst, as |
| 4684728 |
Solubilizing biologically active compounds with reactive hydrogen atoms |
August 4, 1987 |
| A biologically active compound can be solubilized by reaction in different sequences to form a derivative carrying the active moiety, a linking group such as an optionally substituted diisocyanate radical, a polyether moiety such as a polyoxyethylene radical, and a terminal group such as |
| 4677221 |
Process for the production of thermally color stable aliphatic and/or cycloaliphatic diisocyanat |
June 30, 1987 |
| The present invention relates to a process for the production of aliphatic and/or cycloaliphatic diisocyanates which are color stable to heat, which is characterized in that a diisocyanate with aliphatically-and/or cycloaliphatically-bound isocyanate groups is heated in the presence of |
| 4659844 |
Cyclic ethers which are substituted in a .alpha.-position by an isocyanide-dichloride group, and |
April 21, 1987 |
| The invention relates to new cyclic ethers which are substituted in the .alpha.-position by an isocyanide-dichloride group, of the formula ##STR1## in which R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5 and n have the meaning indicated in the description, and to a process for their |
| 4654377 |
Process for the preparation of low molecular weight polyhydroxyl compounds |
March 31, 1987 |
| The instant invention relates to an improved process for the preparation of low molecular weight polyalcohols by the catalytic hydrogenation of a mixture of different low molecular weight hydroxy aldehydes, hydroxy ketones and optionally also polyhydric alcohols such as is formed from th |
| 4645817 |
Preparation of hydroxyl group-containing alkoxylation products of organic carboxylic acids |
February 24, 1987 |
| The present invention relates to a process for the preparation of alkoxylation products of organic carboxylic acids containing alcoholic hydroxyl groups by the reaction of any organic compounds containing at least one carboxyl group with alkylene oxides in an alkoxylation reaction in |
| 4639502 |
Substantially colorless organic polyisocyanates, processes for their production and their use in |
January 27, 1987 |
| The present invention relates to substantially colorless organic polyisocyanates, optionally in solution in an inert solvent, having a Hazen color index according to DIN 53 409 of at most 60 and a yellow value according to DIN 6167 of at most 3.0, characterized by a content of about |
| 4638795 |
Material for support dressings |
January 27, 1987 |
| Material which hardens on access of moisture, for the production of support dressings in human medicine or veterinary medicine, which is based on a flexible carrier material impregnated and/or coated with an agent including isocyanate groups, wherein the agent contains an addition pr |
| 4619966 |
Process for the production of coated substrates |
October 28, 1986 |
| The present invention is directed to a process for the production of water- and solvent-resistant coated substrates by coating heat-resistant substrates with a solution or dispersion of an anionic group-containing polyisocyanate addition product in an aqueous solvent or dispersant and |
