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Class Information
Number: 560/359
Name: Organic compounds -- part of the class 532-570 series > Organic compounds (class 532, subclass 1) > Isocyanate esters (i.e., compounds containing the isocyanate group, -n=c=o, bonded directly to carbon, which carbon may be single bonded to any atom but may be multiple bonded only to carbon) > Benzene ring bonded directly to the isocyanate group > Plural benzene rings bonded directly to isocyanate groups (e.g., diisocyanatodiphenylmethane, etc.)
Description: Compounds wherein isocyanate groups are bonded directly to more than one benzene ring.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7553963 |
Liquid partially trimerized and allophanized polyisocyanates based on toluene diisocyanate and diphenylmethane diisocyanate |
Jun. 30, 2009 |
| 7528220 |
Cyanate ester compound, flame-retardant resin composition, and cured product thereof |
May. 5, 2009 |
| 7495124 |
Process for the production of very pure 2,4'-methylenediphenyl diisocyanate |
Feb. 24, 2009 |
| 7339020 |
High-functionality polyisocyanates |
Mar. 4, 2008 |
| 7253321 |
Process for the preparation of polyamines of the diphenylmethane series at a low degree of protonation |
Aug. 7, 2007 |
| 7230130 |
Process for preparing methylenedianiline and methylenebis (phenylisocyanate) |
Jun. 12, 2007 |
| 7199207 |
Neutral-coloured 1K polyurethane adhesive |
Apr. 3, 2007 |
| 7129312 |
Adhesion promoters for monomer-free reactive polyurethanes |
Oct. 31, 2006 |
| 7118653 |
Process for the purification of mixtures of toluenediisocyanate incorporating a dividing-wall distillation column |
Oct. 10, 2006 |
| 7108770 |
Process for the purification of toluene diisocyanate incorporating a dividing-wall distillation column for the final purification |
Sep. 19, 2006 |
| 7045650 |
Polyurethane elastomers having improved physical properties and a process for the production thereof |
May. 16, 2006 |
| 7041776 |
Process for the production of polyisocyanates of the diphenylmethane series by phosgenation of non-neutralized polyamine of the diphenylmethane series |
May. 9, 2006 |
| 7038002 |
Production of mixtures of diisocyanates and polyisocyanates from the diphenylmethane series with high contents of 4,4'-methylenediphenyl diisocyanate and 2,4'-methylenediphenyl diisocyanate |
May. 2, 2006 |
| 6991746 |
Polymeric allophanates of diphenylmethane diisocyanate, perpolymers of these polymeric allophanates, and processes for the preparation of the polymeric allophanates and the prepolymers thereof |
Jan. 31, 2006 |
| 6887399 |
Polymeric allophanates of diphenylmethane diisocyanate, prepolymers of these polymeric allophanates, and processes for the preparation of the polymeric allophanates and the prepolymers thereof |
May. 3, 2005 |
| 6831192 |
Process for preparing methylenedianiline and methylenebis(phenyl isocyanate) |
Dec. 14, 2004 |
| 6830705 |
Liquid stable MDI prepolymers and liquid stable curative systems suitable for room temperature casting which yield high performance urethane elastomers |
Dec. 14, 2004 |
| 6803483 |
Process for the purification of mixtures of toluenediisocyanate |
Oct. 12, 2004 |
| 6800781 |
Process for quenching a gaseous reaction mixture during the gas phase phosgenation of diamines |
Oct. 5, 2004 |
| 6777524 |
Polyether polyurethane |
Aug. 17, 2004 |
| 6737554 |
Process for the production of a dinitronaphthalene isomer mixture with a high proportion of 1,5-dinitronaphthalene |
May. 18, 2004 |
| 6673970 |
Process for preparing methylene diphenylamines by partial neutralization of acidic methylene diphenylamines |
Jan. 6, 2004 |
| 6639102 |
Process for producing polyisocyanates of the diphenyl methane series having a reduced color value |
Oct. 28, 2003 |
| 6576788 |
METHOD FOR PRODUCING MIXTURES CONSISTING OF DIPHENYLMETHANE DIISOCYANATES AND POLYPHENYLENE-POLYMETHYLENE-POLYISOCYANATES CONTAINING A REDUCED AMOUNT OF CHLORINATED SECONDARY PRODUCTS AND WITH |
Jun. 10, 2003 |
| 6569352 |
Phthalic anhydride based polyester-ether polyols and urethane prepolymers produced therefrom |
May. 27, 2003 |
| 6541532 |
Scorch inhibiting compositions for polyurethane foams |
Apr. 1, 2003 |
| 6515125 |
Liquid partially trimerized polyisocyanates based on toluene diisocyanate and diphenylmethane diisocyanate |
Feb. 4, 2003 |
| 6515164 |
Low monomer polyurethane prepolymer and process therefore |
Feb. 4, 2003 |
| 6495652 |
Prepolymers containing isocyanate groups and a method for the production thereof |
Dec. 17, 2002 |
| 6489503 |
Storage stable methylene bis(phenylisocyanate) compositions |
Dec. 3, 2002 |
| 6489429 |
Amidoalcohol-blocked polyisocyanate |
Dec. 3, 2002 |
| 6455601 |
Isocyanate compositions for blown polyurethane foams |
Sep. 24, 2002 |
| 6444777 |
PROCESS FOR PRODUCING COMPACT OR CELLULAR POLYURETHANE ELASTOMERS BASED ON 3,3' DIMETHYL DIPHENYL 4,4' DIISOCYANATE-CONTAINING POLYISOCYANATE MIXTURES AND ISOCYANATE PREPOLYMERS SUITABLE THERE |
Sep. 3, 2002 |
| 6433219 |
Method for the production of methylenedi(phenylamine and methylenedi(phenyl isocyanate) |
Aug. 13, 2002 |
| 6410095 |
Solvent-free binder compositions and their use in one- and two-component coating compositions |
Jun. 25, 2002 |
| 6376567 |
Polyisocyanate compositions and a process for the production of low-density flexible foams with low humid aged compression sets from these polyisocyanate compositions |
Apr. 23, 2002 |
| 6376698 |
Prepolymers |
Apr. 23, 2002 |
| 6313060 |
Catalyst for ring-opening polymerization of alkylene oxide, method for preparation thereof and use thereof |
Nov. 6, 2001 |
| 6262139 |
Polyisocyanate compositions for the preparation of flexible polyurethane foams |
Jul. 17, 2001 |
| 6120699 |
Storage stable methylene bis(phenylisocyanate) compositions |
Sep. 19, 2000 |
| 6096237 |
Polymeric MDI compositions for use in thermoformable foams |
Aug. 1, 2000 |
| 6090864 |
Polymeric MDI prepolymer composition and flexible foams prepared therefrom |
Jul. 18, 2000 |
| 6036879 |
Viscosity-stable isocyanate-terminated prepolymers and polyoxyalkylene polyether polyols having improved storage stability |
Mar. 14, 2000 |
| 6022444 |
Modified PMDI for faster press times or lower press temperatures and reduction of MDI from hot presses |
Feb. 8, 2000 |
| 5919888 |
Viscosity-stable isocyanate-terminated prepolymers and polyoxyalkylene polyether polyols having improved storage stability |
Jul. 6, 1999 |
| 5905151 |
Trimer catalyst for aliphatic and aromatic isocyanates |
May. 18, 1999 |
| 5883216 |
Blocked polyisocyanates containing amide/imide groups and their use in stoving lacquers |
Mar. 16, 1999 |
| 5821316 |
Polyurethane prepolymers for making elastomers having improved dynamic properties |
Oct. 13, 1998 |
| 5817860 |
Polyurethane prepolymer compositions, foams made therefrom and methods of making each thereof |
Oct. 6, 1998 |
| 5770763 |
Difunctional bitricyclodecatriene monomers |
Jun. 23, 1998 |
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