IVANOV, M. G.;GOLOV, V. G.;ROGULEV, V. A.;MUSHKIN, YU. I.;VODOPYANOV, V. +, XIM. PROM-ST,(1988) N 4, 208-210
作者:IVANOV, M. G.、GOLOV, V. G.、ROGULEV, V. A.、MUSHKIN, YU. I.、VODOPYANOV, V. +
DOI:——
日期:——
METHOD OF PRODUCING A URETONIMINE-MODIFIED ISOCYANATE COMPOSITION
申请人:BASF SE
公开号:EP2046858A1
公开(公告)日:2009-04-15
URETONIMINE-MODIFIED ISOCYANATE COMPOSITION AND METHOD OF FORMING THE SAME
申请人:SAVINO THOMAS
公开号:US20070213432A1
公开(公告)日:2007-09-13
A uretonimine-modified isocyanate composition having reduced color and a method of forming the same is disclosed. The method of forming the uretonimine-modified isocyanate composition comprises providing a polyisocyanate composition having two or more isocyanate groups and reacting the polyisocyanate composition at a temperature in a range of from about 80° C. to about 130° C. and in the presence of a catalyst. The reaction of the polyisocyanate composition is quenched with a quenching agent and a color inhibitor having a low basicity and having at least one hindered amine group is added. The uretonimine-modified isocyanate composition has a color value corresponding to an a* value of greater than about −10 and a b* value less than about 10 as defined by CIE L*a*b* (CIELAB) Color Space Specification and undergoes a % NCO group decrease of less than about 6 %.
Method Of Producing A Uretonimine-Modified Isocyanate Composition
申请人:Savino Thomas
公开号:US20080021176A1
公开(公告)日:2008-01-24
A method produces a uretonimine-modified isocyanate composition having increased low-temperature tolerance. The method comprises providing a first polyisocyanate composition having two or more isocyanate groups and comprising 4,4′-diphenylmethane diisocyanate (MDI) and reacting the first polyisocyanate composition at a temperature of from about 90° C. to about 115° C. and in the presence of a catalyst such that the isocyanate groups form carbodiimides for forming uretonimine and uretonimine oligomers. The reaction of the first polyisocyanate composition is quenched with a quenching agent to produce an intermediate composition having an intermediate isocyanate value of from about 21.0 to about 26.0. The intermediate composition is blended with a second isocyanate composition to form a stable uretonimine-modified isocyanate composition.
Uretonimine-Modified Isocyanate Composition and Method of Forming the Same
申请人:Savino Thomas
公开号:US20090143542A1
公开(公告)日:2009-06-04
A uretonimine-modified isocyanate composition has reduced color. The uretonimine-modified isocyanate composition comprises a polyisocyanate composition having two or more isocyanate groups and comprising 4,4′-diphenylmethane diisocyanate (MDI) and a catalyst for catalyzing a reaction of the isocyanate groups to form carbodiimides available for forming uretonimines and uretonimine oligomers. A first quenching agent partially quenches the reaction of the isocyanate groups to inhibit formation of the carbodiimides thereby inhibiting additional formation of uretonimines and uretonimine oligomers and a second quenching agent different than the first quenching agent quenches the reaction of the isocyanate groups to further inhibit formation of the carbodiimides thereby further inhibiting additional formation of uretonimines and uretonimine oligomers. A method of forming the uretonimine-modified isocyanate composition is also disclosed.