Chemistry of carbon compounds – Miscellaneous organic carbon compounds
Patent
1975-12-02
1977-03-22
Welsh, M. J.
Chemistry of carbon compounds
Miscellaneous organic carbon compounds
C08G 1808
Patent
active
040136256
ABSTRACT:
Isocyanate polyaddition products which are cross linked via allophanate, biuret, uretdione or uretone imine groups are linearized with liquid lactams or azalactams and their addition products. The invention is particularly useful for the substantial elimination of allophanate, biuret, uretone imine, and uretdione groups in cross linked cellular polyurethane resins.
REFERENCES:
patent: 3738946 (1973-06-01), Frulla et al.
Dahm Manfred
Wagner Kuno
Bayer Aktiengesellschaft
Gil Joseph C.
Harsh Gene
Welsh M. J.
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