| Patent Number |
Title Of Patent |
Date Issued |
| 7553963 |
Liquid partially trimerized and allophanized polyisocyanates based on toluene diisocyanate and d |
June 30, 2009 |
| This invention relates to storage-stable, liquid, partially trimerized and allophanized polyisocyanates having an NCO group content of 15 to 41% by weight, and comprising 5 to 85% by weight of toluene diisocyanate, 5 to 85% by weight of a polyisocyanate of the diphenyl-methane series and |
| 7378543 |
Stable liquid biuret modified and biuret allophanate modified toluene diisocyanates, prepolymers |
May 27, 2008 |
| This invention relates to stable liquid biuret modified toluene diisocyanates, prepolymers thereof, stable liquid biuret allophanate modified toluene diisocyanates, prepolymers thereof, and to processes for the preparation of these compositions. The stable liquid biuret modified tolu |
| 6991746 |
Polymeric allophanates of diphenylmethane diisocyanate, perpolymers of these polymeric allophana |
January 31, 2006 |
| 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 12 to 30%, prepolymers thereof, and processes for the production of these compositions. |
| 6887399 |
Polymeric allophanates of diphenylmethane diisocyanate, prepolymers of these polymeric allophana |
May 3, 2005 |
| 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 12 to 30%, prepolymers thereof, and processes for the production of these compositions. |
| 6838542 |
Stable liquid biuret modified and biuret allophanate modified diphenylmethane diisocyanates, pre |
January 4, 2005 |
| This invention relates to stable liquid modified diphenylmethane diisocyanates which comprise a secondary amine based biuret modified diphenylmethane diisocyanate having an NCO group content of about 12 to about 30% by weight. The present invention also relates to stable liquid biure |
| 6797799 |
High 2,4'-diphenylmethane diisocyanate content prepolymers |
September 28, 2004 |
| 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 comprising the reaction product of, (a) an aliphatic alcohol or an aromatic alcohol; a |
| 6765080 |
High performance RIM elastomers and a process for their production |
July 20, 2004 |
| This invention relates to high performance RIM (reaction injection molded) poly(urethane)urea elastomers, and to a process for their production. These elastomers comprise the reaction product of an allophanate-modified diphenylmethane diisocyanate prepolymer having an NCO group content o |
| 6639040 |
Continuous process for the production of MDI allophanates |
October 28, 2003 |
| This invention relates to a continuous process for the production of allophanate modified diphenylmethane diisocyanates having an NCO group content of 19 to 32% and an urethane content of less than 2 area % by GPC analysis. The process comprises (1) continuously reacting (a) diphenyl |
| 6586487 |
Low-density, water blown polyurethane foams for energy-absorbing applications |
July 1, 2003 |
| A method for making an energy-absorbing foam having a density that is less than about 7 pcf that exhibits excellent strength properties and that is particularly suitable for automobile bumper applications. The invention is also directed to the energy-absorbing foam made with the method. |
| 6583314 |
Stable isocyanate formulations |
June 24, 2003 |
| The pot life of an isocyanate formulation is controlled by including a chain extender having (a) at least two secondary amine groups, (b) no primary amine groups, and (c) a reactivity low enough that the chain extender will not react sufficiently with isocyanate groups present in the |
| 6515125 |
Liquid partially trimerized polyisocyanates based on toluene diisocyanate and diphenylmethane di |
February 4, 2003 |
| This invention relates to storage-stable, liquid, partially trimerized polyisocyanates having an NCO group content of 24 to 40% by weight, and comprising 20 to 88% by weight of toluene diisocyanate and 12 to 80% by weight of a polyisocyanate of the diphenylmethane series. The present |
| 6482913 |
Liquid MDI adducts wtih improved freeze stability |
November 19, 2002 |
| This invention relates to liquid polyisocyanate compositions having improved freeze stability. These liquid polyisocyanate compositions have an NCO group content of 15 to 30%, and comprise (A) an allophanate-modified MDI and having an NCO group content of 16 to 32.5%, (B) a low molec |
| 6433218 |
Stable isocyanate formulations |
August 13, 2002 |
| The pot life of an isocyanate formulation is controlled by including a chain extender having (a) at least two secondary amine groups, (b) no primary amine groups, and (c) a reactivity low enough that the chain extender will not react sufficiently with isocyanate groups present in the |
| 6320012 |
Isocyanate formulations containing activated chain extenders |
November 20, 2001 |
| The reactivity of isocyanate formulations is controlled by including a chain extender corresponding to the formulain which R.sup.1, R.sup.2, X, R.sup.3 and R.sup.4 represent specified groups is included in the isocyanate formulation. |
| 6271279 |
High resilient flexible urethane foam and flexible molded foams based on allophanate modified is |
August 7, 2001 |
| This invention relates to a process for the preparation of a flexible foam. This process comprising reacting a liquid, storage stable, allophanate-modified polyisocyanate having an NCO group content of about 20 to about 42%, with an isocyanate-reactive component, in the presence of a |
| 6242556 |
Liquid MDI adducts with improved freeze stability |
June 5, 2001 |
| This invention relates to liquid polyisocyanate compositions having improved freeze stability. These liquid polyisocyanate compositions have an NCO group content of 15 to 30%, and comprise a blend of (A) an MDI adduct having an NCO group content of 15 to 30%, and (B) an allophanate-m |
| 6127308 |
Trimer catalyst system for aliphatic and aromatic isocyanates |
October 3, 2000 |
| This invention relates to a novel trimerization catalyst system, and to a process for trimerizing organic polyisocyanates in the presence of thermally active catalyst systems. These catalyst systems comprise (A) compounds selected from the group consisting of (i) lithium salts of ali |
| 6063891 |
Freeze stable allophanate-modified toluene diisocyanate trimers |
May 16, 2000 |
| This invention relates to a novel freeze-stable allophanate modified toluene diisocyanurates, and to a process for producing these freeze-stable allophanate-modified toluene diisocyanurates which requires a catalyst which is capable of forming both trimer and allophanate groups, or a |
| 6028158 |
Freeze-stable allophanate-modified toluene diisocyanate trimers |
February 22, 2000 |
| This invention relates to a novel freeze-stable allophanate modified toluene diisocyanurates, and to a process for producing these freeze-stable allophanate-modified toluene diisocyanurates which requires a catalyst which is capable of forming both trimer and allophanate groups, or a |
| 5955609 |
Trimer catalyst system for aliphatic and aromatic isocyanates |
September 21, 1999 |
| This invention relates to a novel trimerization catalyst system, and to a process for trimerizing organic polyisocyanates in the presence of thermally active catalyst systems. These catalyst systems comprise (A) compounds selected from the group consisting of (i) lithium salts of ali |
| 5905151 |
Trimer catalyst for aliphatic and aromatic isocyanates |
May 18, 1999 |
| This invention relates to a process for trimerizing organic polyisocyanates in the presence of thermally active catalyst systems. The catalyst systems comprise (a) compounds selected from the group consisting of 1) lithium salts of aliphatic or aromatic carboxylic acids, 2) lithium salts |
| 5889068 |
Water blown polyurethane soling systems |
March 30, 1999 |
| This invention relates to molded articles comprising micro cellular polyurethane foams, preferably integral skin foams. These exhibit improved properties and are particularly suitable for soling systems in footwear. The present invention also relates to a process for the production of |
| 5874623 |
Process for the production of polyether aminoalcohols |
February 23, 1999 |
| Disclosed herein is a method of preparing polyether aminoalcohol by reacting a primary aminoalcohol with a polyether terminated with a good leaving group. |
| 5874485 |
Flexible foams and flexible molded foams based on allophanate-modified diphenylmethane diisocyan |
February 23, 1999 |
| This invention relates to flexible foams and flexible molded foams prepared from an isocyanate component comprising an allophanate-modified diphenylmethane diisocyanate. The present invention also relates to processes for the production of these flexible foams and flexible molded foa |
| 5859163 |
Allophanate group-containing polyisocyanates improved compatibility with aldimines |
January 12, 1999 |
| The present invention relates to coating compositions containinga) aldimines andb) polyisocyanates whichi) contain 2 to 35% by weight of allophanate groups, based on the weight of the polyisocyanates,ii) have a viscosity of less than 3000 mpa.s at 25.degree. C. when measured at a solids cont |
| 5821275 |
Flexible foams and flexible molded foams based on liquid isocyanate-terminated allophanate-modif |
October 13, 1998 |
| This invention relates to flexible foams and flexible molded foams prepared from an isocyanate blend comprising an allophanate modified MDI, a polyether polyol, and a polymethylene poly(phenyl isocyanate). The present invention also relates to processes for the production of these flexib |
| 5804648 |
Toluene diisocyanate residue-based compositions and the use of such compositions as fillers for |
September 8, 1998 |
| A TDI residue generated from the phosgenation of toluene diamine having an ortho-isomer content of less than 0.5% is used to produce a urethane-filled hydroxyl compound. The TDI residues useful in this invention must contain at least 10% monomeric TDI and have a total NCO content of |
| 5789519 |
High viscosity, high equivalent weight polyisocyanate mixtures containing allophanate and isocya |
August 4, 1998 |
| The present invention is directed to a polyisocyanate mixture whichi) is prepared from a monomeric starting material containinga) 95 to 100% by weight, based on the weight of a) and b), of an aliphatic diisocyanate having 4 to 18 carbons in the hydrocarbon chain andb) 0 to 5% by weight, based on |
| 5789497 |
Hexamethylene diisocyanate residue-based compositions as fillers for polyether polyols |
August 4, 1998 |
| Urethane-filled, polyether polyols are prepared by reacting (1) a hexamethylene diisocyanate residue from the phosgenation of hexamethylene diamine with contains less than 10% by weight monomeric hexamethylene diisocyanate and has a total isocyanate group content of at least 25% with |
| 5783652 |
Reactivity improvement of urethane prepolymers of allophanate-modified diphenylmethane diisocyan |
July 21, 1998 |
| This invention relates to mixtures of urethane prepolymers of allophanate-modified diphenylmethane diisocyanates with epoxides. The addition of the epoxide increases the reactivity of these prepolymers. It is now possible to form polyurethanes from these mixtures based on prepolymers |
| 5763667 |
Ether-linked amine-terminated polyethers and a process for their production |
June 9, 1998 |
| Ether-linked amine-terminated polyethers are produced by reacting (1) a polyether polyol in which substantially all of the hydroxyl groups have been replaced with good leaving groups with (2) an aminoalcohol and/or aminothiol and (3) a deprotonating agent. The aminopolyethers obtained by |
| 5756636 |
Isocyanate prepolymers produced from toluene diisocyanate residue dissolved in toluene diisocyan |
May 26, 1998 |
| A substantially solid free isocyanate prepolymer is made by reacting an isocyanate mixture which is made up of a toluene diisocyanate residue containing monomeric toluene diisocyanate and optionally, additional monomeric toluene diisocyanate in an amount such that the total NCO conte |
| 5753750 |
Toluene diisocyanate residue-based compositions as fillers for polyisocyanates |
May 19, 1998 |
| TDI residue-based urethane-filled isocyanate compositions are produced by reacting a TDI residue satisfying specified criteria with a monofunctional alcohol in amounts such that the equivalent ratio of isocyanate groups to hydroxyl groups is from about 0.9:1 to about 1:0.9. This reaction |
| 5753749 |
Dicyclohexylmethane diisocyanate residue-based compositions and the use of such compositions as |
May 19, 1998 |
| Urethane-filled compositions are produced by reacting a dicyclohexylmethane diisocyanate residue or a dicyclohexylmethane diisocyanate residue containing mixture with a monofunctional alcohol containing at least one ether group in an amount such that the equivalent ratio isocyanate group |
| 5747629 |
Low surface energy polyisocyanates and their use in one-or two-component coating compositions |
May 5, 1998 |
| The present invention relates to polyisocyanate adducts containing allophanate groups, fluorine and optionally isocyanurate groups that are prepared by reacting compounds a) whichi) are substantially free of hydroxyl groups and isocyanate groups,ii) have an average of at least two urethane g |
| 5739397 |
Process for the production of secondary amines and the amines produced by the process |
April 14, 1998 |
| Secondary amines having a hydrocarbon backbone, a functionality of at least 1 and a molecular weight of at least 74 are produced by reacting a hydrocarbon containing a leaving group with a primary amine, primary diamine, primary polyamine or ammonia at a temperature of from about 70. |
| 5739207 |
Hexamethylene diisocyanate residue-based compositions as fillers for polyisocyanates |
April 14, 1998 |
| Urethane-filled polyisocyanates are produced by (a) reacting a hexamethylene diisocyanate-containing residue having less than 10% by weight monomeric hexamethylene diisocyanate and a total NCO content of at least 25% with an alcohol containing at least one ether linkage in an equival |
| 5723670 |
Liquid amines |
March 3, 1998 |
| Amines which are solid at ambient temperature and pressure are liquified by reacting those amines with a derivatizing agent represented by the formula XY in which X represents a halide or sulfonate group and Y represents an alkyl group, a cycloalkyl group, an alkoxyalkyl group or an aryl |
| 5693864 |
Process for the production of secondary amine terminated polyethers |
December 2, 1997 |
| Disclosed herein is a process for preparing an amine terminated polyether comprising reacting a polyether containing a leaving group with a primary amine or ammonia at a temperature of about 70 to 250 degrees Centigrade. |
| 5691439 |
Low surface energy polyisocyanates and their use in one- or two-component coating compositions |
November 25, 1997 |
| The present invention relates to polyisocyanate adducts containing allophanate groups, siloxane groups and optionally isocyanurate groups that are prepared by reacting compounds a) whichi) are substantially free of hydroxyl groups and isocyanate groups,ii) have an average of at least two ure |
| 5686042 |
Rim process using liquid methylene diphenyl diisocyanate |
November 11, 1997 |
| The present invention relates to a process for the production of molded articles via the reaction injection molding technique. According to the RIM process, a reaction mixture is introduced into a closed mold, allowed to react fully, and removed from the mold. More specifically, these |
| 5672761 |
Method for reducing the viscosity of high viscosity polyether polyols |
September 30, 1997 |
| The viscosity of polyether polyols characterized by functionalities greater than or equal to 1, viscosities greater than 500 mPa.multidot.s at 25.degree. C. and at least 20% terminal secondary hydroxyl groups is reduced by converting at least one terminal hydroxyl group of the polyet |
| 5663272 |
Allophanate-modified diphenylmethane diisocyanates and processes for their production and use |
September 2, 1997 |
| Allophanate-modified MDI which is a storage stable liquid at 25.degree. C. is produced by reacting a monoisocyanate and an organic material having at least two hydroxyl groups and a molecular weight of from about 60 to about 6,000 to form a urethane. The urethane is then reacted with and |
| 5648445 |
Liquid 1,3-phenylene diisocyanate, 1,1'-biphenyl diisocyanate and 1,1'-oxy-bis-(isocyanato-benze |
July 15, 1997 |
| Allophanate-modified 1,3-phenylene diisocyanates or 1,1-biphenyl diisocyanates or 1,1'-oxy-bis-(isocyanato benzenes) which are storage stable liquid at 25.degree. C. are made by reacting the diisocyanate and a mono-alcohol to form an isocyanate containing urethane groups. The urethan |
| 5646227 |
Low surface energy polyisocyanates and their use in one- or two-component coating compositions |
July 8, 1997 |
| The present invention is directed to a polyisocyanate mixturei) having an NCO content of 5 to 35% by weight and prepared from an organic diisocyanate,ii) containing up to 25% by weight of isocyanurate groups (calculated as N.sub.3, C.sub.3, O.sub.3, MW 126),iii) containing allophanate groups |
| 5614605 |
Rigid polyurethanes based on allophanate-modified aliphatic and/or cycloaliphatic polyisocyanura |
March 25, 1997 |
| This invention relates to rigid polyurethanes prepared by reaction, at an isocyanate index of 95 to 110, of(a) an allophanate-modified aliphatic and/or cycloaliphatic polyisocyanurate;(b) 20 to 100% by weight, relative to the total of components (b) and (c), of(i) one or more polyether a |
| 5576411 |
Low surface energy polyisocyanates and their use in one-or two component coating compositions |
November 19, 1996 |
| The present invention is directed to a polyisocyanate mixturei) having an NCO content of 5 to 35% by weight and prepared from an organic diisocyanate,ii) containing at least 1% by weight of isocyanurate groups (calculated as N.sub.3, C.sub.3, O.sub.3, MW 126),iii) containing allophanate grou |
| 5574122 |
Low surface energy polyisocyanates and their use in one- or two-component coating compositions |
November 12, 1996 |
| The present invention is directed to a polyisocyanate mixturei) having an NCO content of 5 to 35% by weight and prepared from an organic diisocyanate,ii) containing up to 25% by weight of isocyanurate groups (calculated as N.sub.3, C.sub.3, O.sub.3, MW 126),iii) containing allophanate groups |
| 5567793 |
Urethane-free, diphenylmethane diisocyanate prepolymers and process for their production |
October 22, 1996 |
| Allophanate-modified MDI which is a storage stable liquid at 25.degree. C. is produced in two steps. First, a monoisocyanate is reacted with an organic material having about 1.8 or more hydroxyl groups and a molecular weight of from about 60 to about 6,000 to form the urethane. The ureth |
| 5541281 |
Low surface energy polyisocyanates and their use in one- or two-component coating compositions |
July 30, 1996 |
| The present invention is directed to a polyisocyanate mixturei) having an NCO content of 5 to 35% by weight and prepared from an organic diisocyanate,ii) containing less than 5% by weight of isocyanurate groups (calculated as N.sub.3, C.sub.3, O.sub.3, MW 126),iii) containing allophanate gro |
