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References
1.
Carbonylation 1) BASF, Eur. Patent 36 895 (1979). 2) Bayer, US Patent 4 297 501 (1981). 3) ARCO, US Patent 4 251 667 (1981). 4) Bayer, US Patent 4 219 661 (1980). 5) ARCO, US Patent 3 895 054 (1975). 6) Mitsui Toatsu, US Patent 4 178 455 (1980). 7) Mitsubishi Chemical, Jap. Kokai Tokkyo Koho 55-15416 (1980). 8) Asahi Chemical, Jap. Kokai Tokkyo Koho 58-110554 (1983). 9) Asahi Chemical, Jap. Kokai Tokkyo Koho 58-118552 (1983). 10) Asahi Chemical, Jap. Kokai Tokkyo Koho 58-167556 (1983).
2.
Condensation 1) BASF, US Patent 4 328 354 (1982). 2) Bayer, US Patent 2 946 768 (1960). 3) ARCO, US Patent 4 146 727 (1979). 4) ARCO, US Patent 4 162 362 (1979). 5) ARCO, US Patent 4 172 948 (1979). 6) ARCO, US Patent 4 230 877 (1980). 7) Mitsui Toatsu, Ger. Offen. 2 950 386 (1980). 8) Mitsubishi Chemical, Eur. Patent 27 330 (1980). 9) Asahi Chemical, Jap. Kokai Tokkyo Koho 57-62151 (1982). 10) Asahi Chemical, Jap. Kokai Tokkyo Koho 57-171952 (1982). 11) Asahi Chemical, Jap. Kokai Tokkyo Koho 58-67660 (1983). 12) Asahi Chemical, Jap. Kokai Tokkyo Koho 58-194852 (1983).
3.
Decomposition 1) BASF, US Patent 4 330 479 (1982). 2) Bayer, Eur. Patent 61 013 (1982). 3) Mitsui Toatsu, Eur. Patent 30 039 (1980). 4) Asahi Chemical, Jap. Kokai Tokkyo Koho 57-158746 (1982). 5) Asahi Chemical, Jap. Kokai Tokkyo Koho 57-158747 (1982). 6) Asahi Chemical, Jap. Kokai Tokkyo Koho 57-159751 (1982).
4.
Phosgene Process 1) Yen-Chen Yen, SRI PEP Report, "Isocyanates" Part 1-C (1979).