Process for the linearization of polyurethanes with lactams and

Details Process for the linearization of polyurethanes with lactams and Process for the linearization of polyurethanes with lactams and

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.

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