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8148567 |
Process for producing urethane (meth)acrylate
An object of the present invention is to provide a process for producing a urethane (meth)acrylate safely with good productivity, and for achieving the object, the invention provides a process for...
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8110704 |
Process for the production of stable polymers
Stable NCO prepolymers are produced from polyisocyanates having a melting point greater than 70° C., preferably, naphthalene diisocyanate, having advantageous physical properties. An important ...
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8066974 |
Contrast agents
The present invention relates to a class of compounds and to diagnostic compositions containing such compounds where the compounds are iodine containing compounds. More specifically the iodine...
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7923574 |
Prepolymers
The invention relates to novel prepolymers which are accessible from the formamides of oligomeric di- or polyamines (formamide-terminated oligomers) and di- or polyisocyanates.
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7906606 |
Moisture-curing prepolymers
Solvent-containing formulations including NCO-containing prepolymers based on TDI isocyanurate polyisocyanates and diphenylmethane diisocyanates where some prepolymers are prepared using a...
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7906607 |
Isocyanate group-terminated urethane prepolymer, process for producing the same, and adhesive comprising the urethane prepolymer
It is an object of the present invention to provide an isocyanate group-terminated urethane prepolymer which has a low viscosity at melting and a process for producing the same, and an adhesive...
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7897718 |
Acrylated semi-crystalline hyperbranched polyurethane oligomer and preparation method thereof
The present invention relates to an acrylated semi-crystalline hyperbranched polyurethane oligomer and a preparation method thereof, which is characterized in that on the basis of the synthesis of...
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7893184 |
Method for producing dendritic or hyperbranched polyurethanes
Dendritic or hyperbranched polyurethanes are prepared by 1) reacting diols or polyols having at least one tertiary nitrogen atom and at least two hydroxyl groups of differing reactivity toward...
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7825276 |
Process for the preparation of liquid, storage-stable organic isocyanates containing carbodiimide and/or uretoneimine groups
The invention relates to a process for the preparation of liquid, storage-stable isocyanate mixtures of low color number containing carbodiimide (CD) and/or uretonimine (UI) groups, the isocyanate...
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7790907 |
Method of producing a uretonimine-modified isocyanate composition
A method produces a uretonimine-modified isocyanate composition having increased low-temperature tolerance. The method comprises providing a first polyisocyanate composition having two or more...
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7786242 |
Ring-containing modified resins and dispersants including it
The ring-containing modified resin is represented by the following chemical formula (1) R1[—(—O—CO—NH—R2—NH—CO—O—R3—)p—O—R4]
q (1) (in the chemical formula (1), R1 is a dehydroxyl residue of a...
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7786326 |
Polyacylurethanes based on diisocyanates and polyesterpolyols
The present invention relates to a polyacylurethane having the following general formula (I) and a process for the preparation of such polyacylurethane. Preferred embodiments of the...
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7705106 |
Initial compounds for producing polyurethanes
The invention relates to starting compounds which can be used for the preparation of polyurethanes and can be prepared by reaction of hydroxyl-containing oligomers of formaldehyde.
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7652166 |
Biuret compounds, their preparation and use, and intermediates in their preparation
The present invention relates to biuret compounds of the general formula in which R1 is C2-C18 alkylene, cycloalkylene, arylene or aralkylene, Y is —O— and/or —NH—, R2 is C4-C22 alkyl, C3-C18 ...
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7635742 |
Modified isocyanates
Modified stable polyisocyanates are described having at least one isocyanate function modified by a group having cross-linking functionality. The modified stable polyisocyanates may be prepared by...
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7553921 |
Polyether polyol composition and use thereof
A polyether polyol composition, the reactivity of which with a polyisocyanate can be controlled, to thereby obtain an isocyanate group-terminated prepolymer having excellent storage stability. A...
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7553906 |
Dual cure systems
An organic polyisocyanate with at least one unsaturated functional group is capable of copolymerizing when exposed to actinic radiation. The polyisocyanate comprises structural units with the...
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7468454 |
Amino-functional polyurethane prepolymers and a process for their preparation
The present invention relates to a process for preparing amino-functional polyurethane prepolymers by a) preparing an NCO-functional polyurethane prepolymer by reacting an excess of one or more di-...
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7399786 |
Derivatives of amino acids for treatment of obesity and related disorders
Novel amino acid derivatives are provided that are useful for management of disorders such as obesity and immunological diseases. The derivatives are also useful in lowering blood glucose levels in...
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7339020 |
High-functionality polyisocyanates
High-functionality polyisocyanates are prepared by a process which comprises (i) preparation of an addition product (A) which contains one group which is reactive toward isocyanate and at least two...
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7262209 |
Carbonyloxy-cyanomethyl compounds as antiparasitic agents
The invention relates to compounds of the general formula wherein Ar1, Ar2, R4, R5, R6, R7, R8, W, X, a and b have the significances given in the specification, and optionally the enantiomers...
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7220814 |
Hydrophilicized blocked polyisocyanates
The present invention relates to new hydrophilicized blocked polyisocyanates, a process for preparing them and their use.
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7199207 |
Neutral-coloured 1K polyurethane adhesive
A polyurethane prepolymer obtainable by reacting at least one aromatic polyisocyanate having symmetrical substitution of NCO groups and at least one aromatic polyisocyanate having asymmetric...
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7141616 |
Radically curable urethane prepolymers and their use in dental materials
The invention relates to urethane prepolymers, obtainable by reaction of: (A) 15 to 85 wt.-% of one or more α,ω-terminated poly(meth)acrylate diols,(B) 0 to 30 wt.-% of one or more radically c...
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7135128 |
Polyurethane compositions with a low content of diisocyanate monomer(s)
At least one isocyanate-reactive monomer is reacted with an excess of molten monomeric diisocynate to produce at least one reaction product and a maximum of 0.5 wt % of free isocyanate groups. The...
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7129312 |
Adhesion promoters for monomer-free reactive polyurethanes
Polyurethane compositions are produced in a two-stage method. In a first step, a diol component with a molecular weight of less than 2000 is reacted with a monomeric diisocyanate with a molecular...
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7119131 |
Urethane binder compositions for foundry applications
Foundry cores and molds for casting metals are prepared by forming a binder comprising a polyol, an isocyanato urethane polymer and a urethane catalyst. The binder additives and resin formulations...
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7101954 |
Polymeric urethane ester quats and their use in personal care compositions
The present invention relates to a composition and use of polymeric urethane esters quats as an active ingredient for skin and hair contacting personal care compositions and products related...
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7087700 |
Polymeric urethane ester tertiary amines and related personal care formulations
The present invention is directed to compositions comprising polymeric tertiary amines of urethane esters and salts thereof. The compositions are generally derived from linear or branched chain...
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7038003 |
Polyether allophanates stable towards discolouration
A process for preparing polyisocyanate prepolymers containing allophanate structural units that includes reacting a) one or more polyisocyanates withb) one or more polyetherpolyols containing less...
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7033522 |
Pulverulent, water-dispersible, blocked polyisocyanate adducts, a process for the preparation and their use
A blocked polyisocyanate adduct including 5 to 95% by weight of at least one isocyanate component having at least one NCO group, the isocyanate component selected from the group consisting of...
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7034185 |
Colorant precursor compositions
Disclosed are colorant precursor compounds of the formula wherein R is an alkyl group, an aryl group, an arylalkyl group, or an alkylaryl group, and wherein R can be joined to the phenyl moiety to...
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7015349 |
Reduction of hair growth
Compositions including a conjugate of α-difluoromethylornithine can be applied topically to reduce hair growth.
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6991746 |
Polymeric allophanates of diphenylmethane diisocyanate, perpolymers of these polymeric allophanates, and processes for the preparation of the polymeric allophanates and the prepolymers thereof
The present invention relates to a new high functionality MDI. In particular, this invention relates to polymeric allophanates based on diphenylmethane diisocyanate having an NCO group content of...
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6972340 |
Selective protein tyrosine phosphatatase inhibitors
Compounds of formula (I) or therapeutically acceptable salts thereof, are selective protein tyrosine kinase-B (PTP1B) inhibitors. Preparation of the compounds, compositions containing the...
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6951939 |
Multivalent platform molecules comprising high molecular weight polyethylene oxide
Valency platform molecules comprising high molecular weight polyethylene oxide groups are provided, as well as conjugates thereof with biologically active molecules, and methods for their...
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6930196 |
Polyurethane hydrogel contact lens
A prepolymer is prepared by reacting a mixture containing (a) at least one multifunctional compound, (b) at least one diisocyanate, and (c) at least one diol. The diol has a weight average...
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6894139 |
Catalysts, in particular for the preparation of polyisocyanate polyadducts
Catalysts contain, as structural units, at least one tertiary amino group and at least one group which, after its decomposition, is capable of complexing or protonating the tertiary amino group.
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6887399 |
Polymeric allophanates of diphenylmethane diisocyanate, prepolymers of these polymeric allophanates, and processes for the preparation of the polymeric allophanates and the prepolymers thereof
The present invention relates to a new high functionality MDI. In particular, this invention relates to polymeric allophanates based on diphenylmethane diisocyanate having an NCO group content of...
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6884904 |
MDI-based polyurethane prepolymer with low monomeric MDI content
An MDI/polypropylene polyether prepolymer composition consisting essentially of at least 80 wt % perfect prepolymers and less than 2 wt % free MDI monomer suitable for use in polyurethane adhesive...
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6878794 |
Urethane resins
Amine-terminated urethane oligomer compositions are described that include very high oligomer concentrations. The compositions are melts of the amine-terminated oligomers. The compositions can...
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6861493 |
Branched polyurethanes, formulations comprising them, and their use for thickening aqueous systems
Branched polyurethanes which are preparable by reacting A) one or more aliphatic and/or aromatic isocyanates having a functionality of at least three withB) from 90.0 to 99.8 eq. % of one or more...
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6852823 |
Polyurethane and polyurethane-urea elastomers from polytrimethylene ether glycol
Polyurethanes or polyurethane-ureas prepared from: (a) polytrimethylene ether glycol having a number average molecular weight in the range of about 1,000 to about 4,000 and unsaturated end groups...
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6830705 |
Liquid stable MDI prepolymers and liquid stable curative systems suitable for room temperature casting which yield high performance urethane elastomers
The invention relates to liquid stable MDI prepolymers and curative systems which are suitable for room temperature casting and which yield high performance low-shrinkage urethane elastomers upon...
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6809126 |
Solid, radiation-curing powder coating binders and a process for preparing the same
The present invention relates to powder coating binders containing polyurethanes having (meth)acryloyl groups which are applied onto a substrate, fused with heat and cured by electromagnetic...
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6797799 |
High 2,4′-diphenylmethane diisocyanate content prepolymers
The present invention provides NCO prepolymers comprising the reaction product of (1) an allophanate-modified diphenylmethane diisocyanate having an NCO group content of 12 to 32.5% by weight and...
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6797771 |
Aqueous composition that can be hardened physically, thermally or thermally and with actinic radiation and the derivatives and production thereof
The invention concerns a novel aqueous composition that can be hardened physically, thermally and/or with actinic radiation, containing a compound of general formula (I):...
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6777524 |
Polyether polyurethane
Disclosed is a polyether polyurethane comprising (A) at least one polyisocyanate having two or more isocyanate groups, which is selected from the group consisting of an aromatic polyisocyanate and...
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6753386 |
Polyurethane polyols and coatings thereof having reduced viscosity
The present invention relates to a film forming composition, a method of forming the composition, and application of the composition to coating formulations which provide a cured coating having...
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6743374 |
Self-emulsifiable polyisocyanate with high functionality and process for producing the same
A self-emulsifiable polyisocyanate with high functionality, having the average number of functional groups in 4.3 or more and a viscosity of 8,000 mPa·s (at 25° C.) or less, which is obtained by s...
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