Process for the production of blocked polyisocyanates containing

Details Process for the production of blocked polyisocyanates containing Process for the production of blocked polyisocyanates containing

1989-05-15

1992-06-30

Siegel, Alan

Organic compounds -- part of the class 532-570 series

Organic compounds

Isocyanate esters

C07C25100

Patent

active

051264790

ABSTRACT:
The present invention relates to a process for the production of organic compounds containing (i) carbodiimide and/or uretone imine groups and (ii) blocked isocyanate groups, wherein about 10 to 90% of the isocyanate groups of an organic polyisocyanate are blocked by reaction with a monofunctional blocking agent for isocyanate groups, and subsequently about 65 to 100% of the free isocyanate groups still remaining are converted into carbodiimide groups with elimination of the carbodiimide. The present invention also relates to the organic compounds obtainable by this process and to their use for the production of plastics by reaction with compounds containing isocyanate-reactive groups by the isocyanate polyaddition process.

REFERENCES:
patent: 4077989 (1978-03-01), Schafer et al.

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