Novel catalyst system for trimerization of organic isocyanates

Details Novel catalyst system for trimerization of organic isocyanates Novel catalyst system for trimerization of organic isocyanates

1977-07-01

1978-09-12

Randolph, John D.

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

Organic compounds

Chalcogen in the nitrogen containing substituent

544 69, 544193, 544221, C07D27304

Patent

active

041139453

ABSTRACT:
A novel catalyst system is described that is useful in the trimerization of organic isocyanates. The system comprises (1) N,N',N"-trisdialkylaminoalkyl-s-hexahydrotriazine and (2) a compound selected from the group consisting of 3,5-bis(N,N-dialkylaminoalkyl)-1,3,5-tetrahydrooxadiazine, 5-(N,N-dialkylaminoalkyl)-1,3,5-dihydrodioxazine and the mixtures thereof.

REFERENCES:
patent: 3527657 (1970-09-01), Huther et al.
patent: 4025469 (1977-05-01), Kauffman
Von Hans Krassig, Makromol. Chem. vol. 17, pp. 77 to 130 (1956) (Brief English abst. in Chem. Abst. vol. , cols. 13953-13954 (1956).
Bergmann et al., Ber. Deut. Chem. vol. 57, pp. 662-664 (1924) (brief English abst. in Chem. Abst. vol. 18, p. 2683 (1924).
Walker (I), Formaldehyde, frontispage, pp. 199-202 and 209-210, Reinhold Publ. Corp. NY (1944).
Walker (II), Formaldehyde, frontispage and p. 282 (1953), Reinhold Publ. Corp. NY.

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