| 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 |
| 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. |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 5319054 |
Liquid methylene diphenyl diisocyanate |
June 7, 1994 |
| The present invention relates to a process for the production of a allophanate-modified MDI which is a storage stable liquid at 25.degree. C. comprising (A) reacting (i) one equivalent of a diisocyanate and (ii) one equivalent of an aliphatic alcohol containing from 1 to about 36 carbon |
| 5319053 |
Liquid diphenylmethane diisocyanate |
June 7, 1994 |
| The present invention relates to a stable, liquid MDI prepolymer containing an allophanate-modified MDI, having an NCO content of 12 to 32.5% comprising a reaction product of an aliphatic alcohol and diphenylmethane diisocyanate comprising about 2 to 60% by weight 2,4'-diphenylmethane |
