Class 560/331 - With preservative or stabilizer

Subclass of Class 560 - Organic compounds -- part of the class 532-570 series
Definition: Products which contain an isocyanate ester in admixture
No. of patents: 33
Last issue date: 01/29/2008

Number	Title	Issue Date
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
7297746	Color stability of isocyanates A hardener composition for use as a component of a two component polyurethane coating composition, comprising a polyisocyanate, a catalyst for promoting reaction of the polyisocyanate with a reactive hydrogen compound, and one or more antioxidants selected from: a f...	11/20/2007
7189770	Curing component and curable resin composition containing the curing component An amine curing component which can be used with various types of prepolymers including a urethane prepolymer having a reactive functional group of highly reactivity is provided. Also provided is a curable resin composition containing such curing component. This cur...	03/13/2007
7038003	Polyether allophanates stable towards discolouration A process for preparing polyisocyanate prepolymers containing allophanate structural units that includes reacting a) one or more polyisocyanates with b) one or more polyetherpolyols containing less than or equal to...	05/02/2006
6800667	Mixture containing isocyanates as well as organic and/or inorganic acid anhydrides The present invention relates to a mixture that contains (i) at least one isocyanate and (ii) at least one organic and/or inorganic acid anhydride. ...	10/05/2004
6576788	METHOD FOR PRODUCING MIXTURES CONSISTING OF DIPHENYLMETHANE DIISOCYANATES AND POLYPHENYLENE-POLYMETHYLENE-POLYISOCYANATES CONTAINING A REDUCED AMOUNT OF CHLORINATED SECONDARY PRODUCTS AND WITH A REDUCED IODINE COLOR INDEX In a process for preparing mixtures of diphenylmethane diisocyanates and polyphenylpolymethylene polyisocyanates having a reduced content of chlorinated by-products and a reduced iodine color number by two-stage reaction of the corresponding mixtures of d...	06/10/2003
6559264	Malonic acid ester/triazole mixed blocked HDI trimer/formaldehyde stabilization The present invention relates to blocked polyisocyanate crosslinking agents, to the production thereof and to the use thereof in single-component stoving lacquers, particularly OEM clear lacquers (original equipment material, initial lacquer coating)....	05/06/2003
6166128	Color reduction of polymethylene poly (phenylisocyanates) This invention relates to a process for the reduction of color of polymethylene poly(phenylisocyanates). This process comprises mixing a polymethylene poly(phenylisocyanate) with an epoxide having an epoxide equivalent weight of about 44 to about 700, and...	12/26/2000
6127463	Polymeric MDI color reduction The present invention relates to an improved process for the production of light colored polymethylene polyphenyl polyisocyanates. This process comprises adding a compound that contains an epoxide group to the process at any point prior to quench cooling ...	10/03/2000
6060573	Polyisocyanates blocked with CH-acidic esters and stabilized against thermal yellowing The present invention relates to a stabilized, aliphatic and/or cycloaliphatic, blocked polyisocyanates which have i) isocyanate groups blocked with CH-acidic esters, ii) a content of blocked isocyanate groups (calculated as NCO, MW 42) of 5 to 20, preferably ...	05/09/2000
5961878	Amine-blocked polyisocyanates and their use in one-component stoving compositions The invention relates to non-crystallising, amine-blocked polyisocyanates, to the preparation thereof and to their in one-component polyurethane stoving compositions, in particular for coil-coating applications....	10/05/1999
5849855	Blocked polyisocyanate composition and one-pack thermocuring resin composition comprising the same Disclosed is a blocked polyisocyanate composition comprising: a blocked polyisocyanate obtained by blocking the terminal isocyanate groups of a two or more terminal isocyanate groups-containing polyisocyanate derived from at least one diisocyanate selecte...	12/15/1998
5808138	Stable polyisocyanate copositions obtainable by phosgene-free methods and their preparation Stable (cyclo)aliphatic polyisocyanate compositions obtainable by phosgene-free methods, preferably by thermal cleavage of (cyclo)aliphatic polycarbamates, are stabilized with carbon dioxide, advantageously in an amount of up to 0.3% by weight....	09/15/1998
5728317	Polyisocyanate compositions having a long shelf life and obtainable by phosgene-free methods, their preparation and their use (Cyclo)aliphatic polyisocyanate compositions which have a long shelf life, are obtainable by phosgene-free methods, preferably by thermal cleavage of (cyclo)aliphatic polycarbamates, and, for stabilization, contain at least one primary stabilizer (2a), pr...	03/17/1998
5726240	Reactivity stabilization of polymethylene poly(phenylisocyanates) This invention relates to mixtures of polymethylene poly(phenylisocyanate) blends with epoxides. The addition of the epoxide stabilizes the reactivity of the polyisocyanate blends such that it is no longer dependent on the acidity. It is now possible to f...	03/10/1998
5693686	Foam-forming mixtures with decreased decomposition of hydrohalocarbon blowing agents A polyisocyanate having an acid value of at least 0.01% HCl is used to produce polyisocyanate, polyisocyanurate and polyurethane urea foams with an HCFC blowing agent. The use of such a polyisocyanate is advantageous because the polyisocyanate does not ca...	12/02/1997
5561172	Method of producing rigid polyurethane foams A primary object of the invention is to provide a method of producing rigid polyurethane foams using 1,1-dichloro-1-fluoroethane (HCFC-141b) as the blowing agent while substantially avoiding the formation of decomposition products from HCFC-141b. The abov...	10/01/1996
5455374	Liquification of trans, trans-4,4'-diisocyanate dicyclohexylmethane by partially reacting the isocyanate groups with blocking agents The present invention relates to a liquid, storage-stable isocyanate having a viscosity of less than 100,000 mPa.s at 23° C. and an isocyanate content of from about 9 to 20% by weight, and is prepared by reacting a solid 4,4'-methylene bis(cyclohexyl iso...	10/03/1995
5359129	Method for preventing coloration of diphenylmethane diisocyanate compound A method for preventing the coloration of a diphenylmethane diisocyanate compound, which comprises adding, to the diphenylmethane diisocyanate compound, a hindered amine compound of the formula: ##STR1## wherein R1 and R3 are, t...	10/25/1994
5312971	Color reduction of polymethylene polyphenyl polyisocyanates The present invention is directed to a process for the production of polymethylene polyphenyl polyisocyanates by phosgenating the corresponding polyamines in solution in an inert organic solvent, removing excess phosgene, and stripping the solvent. The im...	05/17/1994
5288899	Liquification of diphenylmethane diisocyanate by partially reacting the isocyanate groups with blocking agents The present invention relates to a liquid, storage-stable isocyanate having a viscosity of less than 100,000 mPa.s at 25° C. and an isocyanate content of from about 10 to 29% by weight, and is prepared by reacting a solid or semi-solid diphenylmethane di...	02/22/1994
5258548	Method for preventing coloration of aromatic isocyanate compounds A method for preventing coloration of an aromatic isocyanate compound, which is characterized in that an organic phosphite ester of formula: ##STR1## wherein R1, R2, R3 and R4 are, the same or different, ea...	11/02/1993
5240991	Polyisocyanate composition This invention relates to a polyisocyanate composition which contains a specific amount of denatured silicon oil being inactive to polyisocyanate compound comprising a specific diphenylmethane diisocyanate oligomer and/or its derivatives. The polyisocyana...	08/31/1993
5068402	Stabilized polyisocyanates The present invention is directed to polyisocyanates containing a stabilizing amount of a carboxylic acid corresponding to the formula ##STR1## wherein R1, R2 and R3 represent hydrogen or C1 -C5 ...	11/26/1991
4904704	Rigid foams prepared from treated toluene diisocyanate residue A method of treating toluene diisocyanate distillation residues comprising reacting the residues with at least about 0.5 equivalents, based on hydrolyzable chloride concentration of the residues, of an epoxy compound at a temperature of from about 155 to ...	02/27/1990
4719289	Glycopeptides, process for their preparation and their use Compounds of the general formula I, II or III are described, in which R1 is a hydrogen atom, an alkoxycarbonyl or arylalkoxycarbonyl group conventionally used for protecting amino groups, or CH3 --(CH2)m --CO, in whi...	01/12/1988
4677154	Stabilizer package for polyurethane comprising a substituted cresol and another costabilizer The invention relates to elimination of discoloration in polyurethanes, particularly thermoplastic polyurethanes, by the addition to the reaction mixture from 0.01 to 1 percent by weight, based on the isocyanate component, a stabilizer package characteriz...	06/30/1987
4565648	Use of carbonyl compounds, sulfonyl compounds and/or thioureas as stabilizers for solutions containing pyrocarbonic acid dialkyl esters and polyisocyanate preparations containing those esters A process for producing storage-stable solutions of pyrocarbonic acid dialkyl esters in organic liquids inert to these esters comprising adding certain carbonyl compounds, sulfonyl compounds and/or thiourea to these pyrocarbonic acid dialkyl ester solutio...	01/21/1986
4260554	Storage-stable, liquid carbodiimide modified polyisocyanates and process for their manufacture Storage-stable, liquid carbodiimide-modified polyisocyanates are prepared by condensation of polyisocyanates in the presence of catalytic amounts of phospholine, phospholidine, phospholine oxides and/or phospholidine oxides, said condensation terminated a...	04/07/1981
4225532	Stabilized preparations of aromatic isocyanatosulphonic acids The present invention relates to a process for increasing the storage stability of solid aromatic isocyanatosulphonic acids by the addition of a substantially apolar, stabilizing agent which is inert towards isocyanate groups and sulphonic acid groups, wh...	09/30/1980
4143062	Stabilized preparations of aromatic isocyanato sulphonic acids The present invention is concerned with a method of imparting storage stability to aromatic isocyanato sulphonic acids and to the stabilized mixtures so prepared. The aromatic isocyanates are combined with liquids which are non-polar, inert non-solvents h...	03/06/1979
4120884	Storage-stable, liquid polyisocyanates possessing carbodiimide groups, and process for their manufacture Storage-stable, liquid, only slightly colored polyisocyanates possessing carbodiimide groups and having an isocyanate content of from about 25 to 35% by weight, based on total weight; these products are obtained by condensing polyisocyanates in the presen...	10/17/1978
4055548	Storage-stable liquid polyisocyanate composition A novel liquid isocyanate prepolymer composition is disclosed. The prepolymer is obtained by reacting a polymethylene polyphenylisocyanate containing from about 65 to about 85 percent by weight of methylenebis(phenylisocyanate) the remainder of said polym...	10/25/1977

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Class 560/331 - With preservative or stabilizer