Chemistry of carbon compounds – Miscellaneous organic carbon compounds
Patent
1974-12-18
1978-02-28
Michl, Paul R.
Chemistry of carbon compounds
Miscellaneous organic carbon compounds
C08G 7312
Patent
active
040766977
ABSTRACT:
According to the invention, polyaddition products containing imide groups are manufactured by reacting certain polyimides (preferably maleimides) with polycarboxylic acids in the presence of basic compounds. The preferred embodiment (C) relates to the use of catalysts as basic compounds. In particular, tertiary amines, secondary amines or mixed tertiary-secondary amines can be used. A further embodiment (D) relates to the use of primary polyamines as basic compounds. In the latter case, the polyamine participates in the polyaddition mechanism, that is to say the molecules are incorporated into the polyaddition products. In this latter case, catalysts can also be used additionally.
The invention can be utilized particularly in the fields of surface protection, the electrical industry, laminating processes, and the manufacture of foamed plastics, and in the building industry.
REFERENCES:
patent: 2818405 (1957-12-01), Kovacic
patent: 3652511 (1972-03-01), Vincent et al.
patent: 3669930 (1972-06-01), Asahara et al.
patent: 3740378 (1973-06-01), Crivello
patent: 3767626 (1973-10-01), Laurent et al.
patent: 3910859 (1975-10-01), Bargain
Forgo Imre
Renner Alfred
Schmitter Andre
Ciba-Geigy Corporation
Hall Luther A. R.
Michl Paul R.
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