Tertiary aralkyl urethanes and isocyanates derived therefrom

Details Tertiary aralkyl urethanes and isocyanates derived therefrom Tertiary aralkyl urethanes and isocyanates derived therefrom

1982-07-22

1984-03-27

Torrence, Dolph H.

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

Organic compounds

Carboxylic acid esters

260453P, 560 24, 560 27, 560 28, 560 29, 560 30, C07C125073, C07C125065

Patent

active

044396163

ABSTRACT:
Production of tertiary aralkyl isocyanates, such as tetramethyl xylylene diisocyanates, by thermal cracking of corresponding urethanes formed by addition of corresponding olefins and carbamic acid esters at moderate temperatures and in the presence of acid catalyst.

REFERENCES:
patent: 3477933 (1969-11-01), Stamm et al.
patent: 3962302 (1976-06-01), Rosenthal et al.
patent: 4130577 (1978-12-01), Nagato et al.
patent: 4379767 (1983-04-01), Alexanian et al.

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