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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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8106141 |
Cure accelerators for anaerobic curable compositions
Reaction products prepared from reactants including: (a) at least one compound of structural Formula (I): wherein R1 is selected from aryl and heteroaryl; X is selected from a direct bond, —O—, —S—...
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8063144 |
Polyisocyanate mixtures, a process for their preparation and their use in coating compositions
The present invention relates to polyacrylate-modified polyisocyanates which are i) prepared from aromatic, araliphatic, cycloaliphatic and/or aliphatic polyisocyanates having an NCO content of 5%...
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8058468 |
Carbamate antibiotics
The invention relates to the field of antibiotic compositions, both inside and outside the medical field. Presented is a new class of antibiotic compounds around the lead compound...
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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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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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7705045 |
Prodrugs built as multiple self-elimination-release spacers
This invention concerns multiple release spacers and spacer systems, which release multiple leaving groups following a single activation. It concerns compounds comprising a specifier linked to two...
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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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7678936 |
Isocyanato terminated precursor and method of making the same
A method of making an isocyanato terminated precursor for polyurethane is disclosed. The method comprises heating an isocyanate containing about two or more isocyanato groups per molecule at a...
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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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7576235 |
Processes for preparing bis(urea-urethane) compounds
Processes for preparing bis(urea-urethane) compounds wherein R1 is alkyl, aryl, arylalkyl, or alkylaryl, R2 is alkylene, arylene, arylalkylene, or alkylarylene, R3 is alkylene, arylene,...
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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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7520222 |
Phase change ink formulation containing a combination of a urethane resin, a mixed urethane/urearesin, a mono-amide and a polyethylene wax
Phase change ink carrier compositions comprising an admixture of (1) at least one urethane resin; and/or (2) at least one mixed urethane/urea resin; and/or (3) at least one mono-amide; and/or (4)...
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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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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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7323532 |
Low-viscosity radiation-curing and thermally curing polyisocyanates
The present invention concerns a process for producing low-viscosity polyisocyanates or secondary products thereof, which carry activated, radiation-curable double bonds and can optionally also...
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7312244 |
Polyamine analog-amino acid conjugates useful as anticancer agents
Conjugates in which polyamine analogs are conjugated to an amino acid are provided, as well as compositions comprising these conjugates. Methods of using these conjugates as anticancer treatments...
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7253296 |
Acylated aminopropanediols and analogues and therapeutic uses thereof
The invention relates to novel acylated aminopropanediols and the nitrogen and sulfur analogues thereof, pharmaceutical compositions comprising same, therapeutic uses thereof, in particular for the...
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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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7176271 |
Method for the production of highly functional, highly branched polyureas
A process for preparing high-functionality, highly branched polyureas comprises the steps a) reaction of an at least bifunctional capped diisocyanate or polyisocyanate with at least one at least...
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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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7071242 |
Process for the production of polyurethane di(meth)acrylates
A process for the production of polyurethane di(meth)acrylates in which a diisocyanate component, a diol component and hydroxy-C2–C4-alkyl (meth)acrylate in the molar ratio x:(x−1):2 are rea...
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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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7022767 |
Etherified carbamate crosslinking agents and their use in curable compositions, particularly film-forming compositions
The present invention provides a composition of matter having the structure: where Q is a multi-valent organic moiety containing isocyanurate functionality; X is H, —CH2OH, or —CH2OR′; R′ is an a...
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7022871 |
Process for the synthesis of polycarbamates
Process for the synthesis of polyurethane derivatives from aromatic polyamine compounds. The method involves the reaction of an aromatic polyamine compound with CO and O2 in the presence of a...
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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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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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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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6843933 |
Blocked polyisocyanates
Blocked polyisocyanates, their preparation and use in one-component coating materials. In organic polyisocyanates having at least two isocyanate groups, the isocyanate groups are blocked with OH...
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6827875 |
Cyclic ketones as blocking agents
The present invention relates to new blocked polyisocyanates with which high-grade, emission-free coatings and lacquer coatings with reduced yellowing values can be obtained, to a method of...
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6811833 |
4-membered ring compound and optical phase optical retardation plate using the same
A 4-membered compound is represented by the following formula (I) is disclosed (in the formula, X1 and X2 each independently represent an oxygen atom, a sulfur atom or a substituted or...
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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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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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6767958 |
Modified polyisocyanates
The present invention relates to a modified polyisocyanate which is the reaction product of a polyisocyanate with 2-(cyclohexylamino)-ethanesulfonic acid and/or 3-(cyclohexylamino)-propanesulfonic...
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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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