2,2,4,4-tetraalkyl-1,3-cyclobutanediol modified...

Details 2,2,4,4-tetraalkyl-1,3-cyclobutanediol modified... 2,2,4,4-tetraalkyl-1,3-cyclobutanediol modified...

C - Chemistry, Metallurgy

08

G

260/455

C08G 18/80 (2006.01)

Patent

CA 1178603

ABSTRACT OF THE DISCLOSURE The instant invention is directed to a process for the production of diisocyanate compounds which are both stable and liquid at room temperature, comprising reacting a diisocyanate selected from the group consisting of 2,2'-diphenylmethane diisocyanate, 2,4'-diphenylmethane di- isocyanate, 4,4'-diphenylmethane diisocyanate and mixtures thereof with 2,2,4,4-tetraalkylcyclobutanediol at a temperature of from about 40°C to about 120°C in such a ratio as to afford a product having a percent NCO value in the range of 20 to 30%. The instant invention is also direct- ed to the product prepared by this process.

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