Chemistry of carbon compounds – Miscellaneous organic carbon compounds – C-metal
Patent
1975-07-07
1976-08-03
Gotts, Lewis
Chemistry of carbon compounds
Miscellaneous organic carbon compounds
C-metal
260 25AQ, 260 25AT, 260 775AT, 260453AR, 260573, 260578, C07C11802, C07C119048
Patent
active
039729109
ABSTRACT:
A process for the preparation of compounds represented by the formula ##SPC1##
Wherein Z is ##EQU1## WHEREIN R' and R' are hydrogen, alkyl or aryl and n is 0 or a positive integer, which compounds are particularly useful as chain extenders or in preparing isocyanates or polyols to be used in the production of polyurethane plastics.
REFERENCES:
patent: 3305574 (1967-02-01), Zecher et al.
patent: 3497542 (1970-02-01), Gardner et al.
Kaufman Marvin L.
Metzger Sidney H.
Over John E.
Bayer Aktiengesellschaft
Gil Joseph C.
Gotts Lewis
Harsh Gene
Torrence Dolph H.
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