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Inventor:
Schmidt; Manfred
Address:
Dormagen, DE
No. of patents:
28
Patents:












Patent Number Title Of Patent Date Issued
8273846 Polyurethane and polyurethane urea elastomers based on polycarbonate polyols September 25, 2012
The present invention relates to high-quality polyurethane and polyurethane urea elastomers which exhibit unique combinations of processing characteristics, oxidation resistance, mechanical and mechanical/dynamic properties in particularly demanding applications. These polyurethane e
8242229 Polyurethanes cured with amines and their preparation August 14, 2012
Polyurethane prepolymers are described which are prepared from 2,4'-diiso-cyanate diphenylmethane (2,4'-MDI), a polyol component and an aliphatic diisocyanate. These prepolymers can be cured with aliphatic, cycloaliphatic and/or aromatic amines to form a cured urethane elastomer. In
8097675 2,2'-MDI-based isocyanate mixtures, polyisocyanate polyaddition products prepared therefrom, pro January 17, 2012
Isocyanate mixtures comprising: (a) NCO prepolymers having an NCO content of 1.5 to 18 wt. %; and (b) 1 to 40 wt. % of monomeric 2,2'-diisocyanatodiphenylmethane, based on the isocyanate mixture; wherein the isocyanate mixture has a total NCO content of from 2 to 22 wt. %; polyisocya
8022200 Process for the preparation of liquid, storage-stable organic isocyanates of low color number co September 20, 2011
The invention relates to a process for the preparation of liquid, storage-stable isocyanate mixtures which are characterized by a low color number and which contain carbodiimide (CD) and/or uretonimine (UI) groups. This invention also relates to the isocyanate mixtures obtained by th
7951896 Process for the production of NCO prepolymers that are stable to sedimentation, and their use May 31, 2011
The present invention relates to NCO-terminated prepolymers that are stable to sedimentation, to a process for the production of these NCO-terminated prepolymers, and to the production of polyurethanes from these NCO-terminated polymers.
7763683 Polyester polyols, a process for the production thereof and the use thereof July 27, 2010
The present invention relates to polyester polyols with low functionality and a process for their production, to prepolymers prepared from these polyester polyols and a process for their production, and to polyurethanes prepared from these polyester polyols and/or from these prepolym
7745659 Process for the production of liquid, storage-stable organic isocyanates with a low colour index June 29, 2010
The invention relates to a process for the production of liquid, storage-stable isocyanate mixtures with a low color index having carbodiimide-(CD) and/or uretone imine (UI) groups, the isocyanate mixtures that can be obtained by this process and their use for the production of blend
6977290 Process for preparing oligomeric aliphatic diols, polycarbonatediols based thereon and prepolyme December 20, 2005
The present invention relates to a method for preparing oligomeric aliphatic diols, polycarbonatediols based thereon and NCO-terminated prepolymers obtainable therefrom. The inventive compounds may find use in the preparation of polyurethanes.
6667370 Method for producing prepolymers containing isocyanate end groups, incorporating a small proport December 23, 2003
This invention relates to a process for producing prepolymers, which contain isocyanate terminal groups and which have a very low content of free isocyanate starting materials, from polyester polyols and polyisocyanates.
6428895 Stable adhesive composite material made of polyurethane and of another thermoplastic material, a August 6, 2002
The present invention relates to composite materials made of at least one composite layer of a polyurethane and of a second composite layer which is directly bonded to the first layer and which consists of a thermoplastic material that is different from the polyurethane of layer A). The
6296908 Stable adhesive composite material made of polyurethane and of another thermoplastic material, a October 2, 2001
The present invention relates to composite materials made of at least one composite layer of a polyurethane and of a second composite layer which is directly bonded to the first layer and which consists of a thermoplastic material that is different from the polyurethane of layer A). The
6210523 Compositions useful as binders for the production of composite materials April 3, 2001
Compositions made up of an aromatic polyisocyanate and a polyester having an average molecular weight of from about 600 to about 5000, obtainable by self-condensation of ricinoleic acid, optionally with co-utilization of a C.sub.2 -C.sub.20 starter polyol and optional additives. These
6032412 Moulded bodies comprising of humus-containing plant substrate consolidated with polyurethane/pol March 7, 2000
Moulded bodies are described which comprise a humus-containing plant substrate consolidated with polyurethane/polyurea, which are obtainable by slurrying a humus-containing plant substrate in water, admixing a liquid NCO prepolymer having a maximum NCO content of 15% by weight which has
5994491 Process for the production of polyisocyanates having a biuret structure November 30, 1999
A process for the production of polyisocyanates having a biuret structure, comprising continuously combining organic diisocyanates having aromatically attached isocyanate groups in a mixing chamber with organic diamines having aromatically attached amino groups in a molar ratio of at
5373029 Process for the production of low-fog flexible polyester polyurethane foams and their use in veh December 13, 1994
Low-fog flexible polyester polyurethane foams are produced by reactinga) polyisocyanates, withb) polyesters containing at least two hydroxyl groups and having a molecular weight in the range from 400 to 10,000,in the presence ofc) water and/or readily volatile organic compounds as blowing agents
5286761 Process for the production of low-fog flexible polyester polyurethane foams and their use in veh February 15, 1994
Low-fog flexible polyester polyurethane foams are produced by reactinga) polyisocyanates, withb) polyesters containing at least two hydroxyl groups and having a molecular weight in the range from 400 to 10,000, in the presence ofc) water and/or readily volatile organic compounds as blowing agent
5262448 Process for the preparation of polyurea elastomers containing urethane groups November 16, 1993
The present invention relates to a process for the production of an optionally cellular elastomeric molded article having a compact surface and based on a polyurea elastomer containing urethane groups which is the reaction product ofa) a polyisocyanate component based on a polyisocyanate
5238973 Process for the preparation of polyurea elastomers containing urethane groups August 24, 1993
A process for the preparation of optionally cellular elastic moldings by the reaction injection molding technique in closed molds, in which isocyanate prepolymers A) based ona) polyisocyanates of the diphenylmethane series andb) polyether polyols having a maximum hydroxyl functionality of 2.
5153297 Water-dispersible, electrolyte-stable polyetherester-modified polyurethane ionomers, a process f October 6, 1992
The present invention relates to water-dispersible polyetherester-modified polyurethane ionomers containing 10 to 100 milliequivalents of ionic, preferably cationic, groups per 100 g of ionomer; 2 to 40% by weight of polyetherester groups; and 1 to 35% by weight of ethylene oxide units,
5130466 Diisocyanate, a process for its production and its use July 14, 1992
The present invention is directed to a diisocyanate which corresponds to the formula ##STR1## The present invention is also directed to the preparation of this diisocyanate and to its use for the production of polyisocyanate polyaddition products.
4980500 Process for the preparation of biuret polyisocyanates, the compounds obtained by this process an December 25, 1990
The present invention is directed to a process for the preparation of urethane-modified biuret polyisocyanates by the reaction of(a) 1,6-diisocyanatohexane with subequivalent quantities of(b) biuretizing agents based on water and/or organic compounds which react with isocyanate groups to for
4904125 Process for strengthening geological formations February 27, 1990
The present invention is directed to a process for the strengthening of geological formations in underground workings and mines by the introduction of reaction mixtures which react to form polyurethanes into the formations which are to be strengthened, the reaction mixtures being bas
4857560 Reaction products useful as catalysts in the production of isocyanate-based plastics August 15, 1989
A reaction product is formed from a tertiary amine and an acid mixture of (i) boric acid and (ii) a carboxylic acid. The reaction components are generally used in quantities such that the molar ratio of tertiary amine to acid mixture is from 1:0.1 to 1:10. The molar ratio of the boric ac
4742125 Process for the production of mercapto group-containing oligourethanes, oligourethanes obtainabl May 3, 1988
The present invention is directed to a process for the production of oligourethanes having terminal mercapto groups by reacting organic polyisocyanates with sub-equivalent quantities of organic polyhydroxyl compounds and a mercapto-alkanol in the presence of at least one ester of pho
4734532 Process for the preparation of 4,4'-dinitrodibenzyls March 29, 1988
4,4'-dinitrodibenzyls are prepared by reaction of 4-nitrotoluenes, in the presence of an organic solvent and/or diluent, with an alkali metal-alcoholate and/or an alkaline earth metal alcoholate, and subsequent treatment of the reaction mixture with an aqueous solution of hypohalous
4639499 Cross-linkable polymer resins and use thereof as binders for coating agents January 27, 1987
The present invention is directed to cross-linkable, hydroxyl group-containing polymer resins which are obtained by copolymerizing olefinically-unsaturated monomers and are suitable as binder components for lacquers, the polymer resins having a hydroxyl number of about 20 to 400, an
4621104 Process for the production of liquid bromine-containing alkoxylation products November 4, 1986
Liquid bromine-containing alkoxylation products of butyne-(1,4)-diol which are storage stable are produced. More specifically, 1.5 to 2.5 mols alkylene oxide are reacted with each mol of butyne-(1,4)-diol present at elevated temperature in the presence of a catalyst. The catalyst is
4609682 Process for the production of moldings September 2, 1986
The present invention relates to a new process for the production of elastomeric polyurethane moldings which may be microcellular having a sealed surface layer and an average density of from 0.8 to 1.4 g/cm.sup.3, wherein specific condensation products of ricinoleic acid are used as










 
 
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