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| Number | Title | Issue Date |
| 8119799 | Method for the production of polyisocyanates comprising isocyanurate groups and use therof The present invention relates to novel catalysts for preparing polyisocyanates having isocyanurate groups by a partial trimerization of (cyclo)aliphatic diisocyanates. ... | 02/21/2012 |
| 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 isocyanate groups by reacting | 03/04/2008 |
| 7329717 | Polyisocyanate-modified polycarboxylic acids A process for preparing polyisocyanate-modified polycarboxylic acids by conversion of anhydride-group-free polycarboxylic acids with isocyanate-functional compounds. The process includes reacting A) an anhydride-group-free polycarboxylic-acid component with B) an is... | 02/12/2008 |
| 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 cure thermally, and low-viscosity polyisocyanate mixtures or secondary p... | 01/29/2008 |
| 7317112 | Catalysts for selective isocyanate dimerization A method of dimerizing isocyanates using sulphonamide anions as a dimerization catalyst for the isocyanates and also to a process for preparing oligomeric isocyanates using such catalysts. ... | 01/08/2008 |
| 7288213 | Method for preparing low viscosity tricondensate polyfunctional isocyanates A method is described for preparing a tricondensate polyfunctional isocyanate composition, preferably having at least an isocyanurate and/or biuret group, which includes adding to a tricondensate polyfunctional isocyanate, or a mixture of different tricondensate pol... | 10/30/2007 |
| 7285600 | Reagents for heat activated polymer crosslinking The present invention is directed to nitrile-oxide precursor compounds, and their preparation and use as an irreversible cross-linking agent in polymers having appropriate functionality, i.e., alkenes, alkynes nitriles, and isocyanates. The present invention is also... | 10/23/2007 |
| 7276554 | Coating material composition Coating compositions that are stable to thermal yellowing that include coating materials containing I) one or more dispersions of hydroxyl-free polyurethanes and/or polyurethane-ureas, II) one or more aqueous solutions or dispersions of ionically modified, hydroxyl-... | 10/02/2007 |
| 7276555 | Amide-modified resin or hydrocarbyl moiety for dispersing a pigment A method of dispersing pigment using an amide-modified resin or an amide-modified hydrocarbyl moiety, and the resulting pigment concentrate or coating or ink composition. ... | 10/02/2007 |
| 7268202 | Polyisocyanate composition having allophanate group and high-solid coating material A polyisocyanate composition comprising an allophanate group, which is obtained from an aliphatic diisocyanate(s), wherein in a state substantially free of a solvent and the aliphatic diisocyanate(s), (i) the content of components ... | 09/11/2007 |
| 7232860 | Aqueous binder dispersions as coating compositions An aqueous binder dispersion that includes at least one copolymer (P) containing carboxylic acid and/or carboxylate groups. The copolymer (P) includes structural units of carboxyl-free (meth)acrylic esters with a cycloaliphatic structure, and at least 25 mol % of th... | 06/19/2007 |
| 7205374 | Two-part polyurethane adhesive for bonding insulation boards to a roof deck A method of preparing an adhesive, the method comprising combining an isocyanate, a polyhydroxyl phenol-containing compound, a polyol, and a trimerization catalyst. ... | 04/17/2007 |
| 7205356 | 2-K PU systems Catalysts for the accelerated curing of polyisocyanates with polyols, and to polyurethane systems comprising these. The catalysts are used in a two-component coating system based on polyurethanes including (a) polyisocyanates, (b) compounds having groups which are r... | 04/17/2007 |
| 7199178 | Low-solvent, OH-functional dispersions A process for preparing copolymer dispersions that includes subjecting A) one or more vinyl monomer mixtures containing a) OH-free (meth)acrylic esters and/or vinylaromatics, b) hydroxy-functional vinyl monomers and/or hydroxy-functional (meth)acrylic esters, c) ion... | 04/03/2007 |
| 7196134 | High-solids binder combinations for scratch-resistant topcoats High-solids binder combinations comprising polyisocyanates, special lactone-based polyols and polyacrylate-polyols, a process for preparing such binders, and their use for producing coatings. The lactone-based polyols include ε-caprolactone-based polyols hav... | 03/27/2007 |
| 7163995 | Low-viscosity polyisocyante composition having high functionality and method for preparing same The invention concerns a polyisocyanate composition having high functionality, obtained by polycondensation of diisocyanate or triisocyanate monomers, comprising: (a) 0.5 to 30 wt % of compounds bearing a single uretidinedione function; (b) 0.5 to 45 wt. % of compou... | 01/16/2007 |
| 7129350 | Coupling process and intermediates useful for preparing cephalosporins A process for the preparation of 3-cyclic-ether-substituted cephalosporins of formula I wherein the group CO2R1 is a carboxylic acid or a carboxylate salt and R2 has the formula: ... | 10/31/2006 |
| 7091341 | Catalyst and a method for the trimerization of isocyanates A method is described of preparing (poly)isocyanurate polyisocyanates by catalytic cyclotrimerization of isocyanates. A catalytic system is used which includes a cyclotrimerization catalyst based on a quatemary ammonium salt and imidazole as a cocatalyst. ... | 08/15/2006 |
| 7060817 | Sulfonamide anions as catalysts for NCO oligomerization The present invention relates to the use of sulphonamide salts as catalysts for oligomerizing isocyanates and also to a process for NCO oligomerization using the catalysts of the invention. ... | 06/13/2006 |
| 7057001 | Polymers with urea groups and silyl groups and production and use thereof A process for the production of compounds which contain at least one urea group and at least one silyl group. The process involves reacting a compound containing at least one amino group and a carbamate compound. The compounds produced by this process are useful as ... | 06/06/2006 |
| 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 aliphatic, cycloaliphatic and aromatic isocyanates, wherein the isocyanate... | 04/25/2006 |
| 7030266 | Method for producing polyisocyanates The invention relates to a method for making oligomeric isocyanates by reacting diisocyanates in the presence of a catalyst, wherein the catalyst comprises a saline compound prepared from a five-membered N-heterocycles and the N-heterocycle comprises at least one Nâ... | 04/18/2006 |
| 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′ i... | 04/04/2006 |
| 7001973 | Catalyst and process for preparing low-viscosity and color-reduced polyisocyanates containing isocyanurate groups A low-viscosity polyisocyanate of reduced color, containing isocyanurate groups is prepared by partially trimerizing an aliphatic and/or cycloaliphatic diisocyanate in the presence of 0.02 to 2% weight, based on the weight of the diisocyanate starting material, of a... | 02/21/2006 |
| 6992186 | Process for preparing low-monomer-content TDI trimers The invention relates to a novel process for preparing low-monomer-content trimers based on 2,4- and/or 2,6-diisocyanatotoluene (TDI). A catalytic trimerization is carried out in a mixture of from 20 to 80% by weight of a diisocyanate component containing at least 8... | 01/31/2006 |
| 6987158 | Polyadducts containing uretidone groups Polyaddition compounds containing uretdione groups prepared by reacting uretdione polyisocyanates formed from diisocyanates having exclusively secondary- and/or tertiary-attached isocyanate groups with a molar fraction of isocyanurate structures, based on the sum of... | 01/17/2006 |
| 6946517 | Stabilizer mixtures A stabilizer mixture containing (A) for example a compound of the formula (A-I) wherein R1 is hydrogen or C1-C4alkyl, R2 is a direct bond or C1 | 09/20/2005 |
| 6946538 | Catalyst for isocyanate condensation, composition containing same, method for use, and resulting compositions The invention concerns a method for catalytic (cyclo)condensation of monomer isocyanates, characterised in that it comprises: a) reacting starting monomer isocyanates with a catalyst comprising a mineral or organic salt of a compound of formula (I), wherein Yâˆ... | 09/20/2005 |
| 6936678 | Process for preparing low-monomer-content TDI trimers The invention relates to a novel process for preparing low-monomer-content trimers based on 2,4- and 2,6-diisocyanatotoluene (TDI) and to the use thereof in coatings. The trimers are produced from a mixture of from 20 to 80% by weight of diisocyanate component conta... | 08/30/2005 |
| 6936677 | (Cyclo)condensation of isocyanate compounds The invention concerns the use of a compound comprising a nitrogenous heterocyclic group with five cyclic members including, at least two nitrogen atoms, one of the nitrogen atoms bearing a hydrogen atom to promote the opening/closing reaction of uretidione cycles i... | 08/30/2005 |
| 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 molecular weight of at most 6000. The prepolymer, when reacted with an excess... | 08/16/2005 |
| 6927251 | Mixtures of aqueous binders The present invention relates to aqueous silica sol-modified PU dispersions and their use as coating materials, in particular [lacuna] textiles and leather. ... | 08/09/2005 |
| 6927254 | Polyurethane resin with high carbonate group content The invention relates to solvent-borne polyurethane resins with a high carbonate group content which are dilutable in water, to aqueous coating compositions prepared thereof, to a process for preparing them and to their use. ... | 08/09/2005 |
| 6875243 | Catalysts for preparing polyisocyanates containing isocyanurate groups, and their use Catalysts and processes for preparing polyisocyanates containing isocyanurate groups, and their use, wherein the catalysts are represented by the following formula (1): [Hl⊕Xm⊕Fn⊖] | 04/05/2005 |
| 6861523 | 1,3,5- trisubstituted-1,3,5-triazine-2,4,6-trione compounds and libraries The solid-phase synthesis of individual 1,3-disubstituted and 1,3,5-trisubstituted-1,3,5-triazine-2,4,6-triones and libraries thereof from a resin is described. Reaction of resin-bound amino acids with isocyanates yields resin-bound ureas, which further react with c... | 03/01/2005 |
| 6777523 | Highly functional polyisocyanate mixtures which are dispersible in water The invention relates to polyether-modified, water-dispersible polyisocyanate mixtures, a process for their production and their use as initial component in the production of polyurethane plastics. ... | 08/17/2004 |
| 6703471 | Preparation of low-odor-storage-stable monomer-containing polyisocyanurates based on isophorone diisocyante Low-odor, storage-stable monomer-containing polyisocyanurate is prepared from isophorone diisocyanate by conducting a partial trimerization for 3 minutes to 3 hours in the presence of 0.05-2% by weight of a catalyst, based on the weight of the diisocyanat... | 03/09/2004 |
| 6653432 | Condensation polymerization method for isocyanates The invention concerns a (cyclo)trimerisation method for isocyanates having at least two isocyanate functions, characterised in that it comprises: a) reacting initial isocyanate monomers having at least two isocyanate functions, optionally in the presence... | 11/25/2003 |
| 6646162 | Compounds and compositions for delivering active agents Compounds and compositions for the delivery of active agents are provided. Methods of administration and preparation are provided as well.... | 11/11/2003 |
| 6635761 | Catalyst and method for trimerization of isocyanates This invention relates to the use as catalyst for the cyclotrimerization reaction of isocyanates of a hydrogencarbonate of a cation which either as it is or in the form complexed with a complexing agent has an average molecular or ionic radius of more tha... | 10/21/2003 |
