Process for producing large-sized formed articles consisting...

Details Process for producing large-sized formed articles consisting... Process for producing large-sized formed articles consisting...

B - Operations, Transporting

29

C

18/1105, 18/1108

B29C 39/02 (2006.01) B29C 39/08 (2006.01) C07D 233/10 (2006.01) C08G 18/50 (2006.01) C08G 18/80 (2006.01) C08G 69/16 (2006.01) C08G 69/40 (2006.01) C08L 75/02 (2006.01) C08L 77/02 (2006.01)

Patent

CA 2013358

PM 3900 "PROCESS FOR PRODUCING LARGE-SIZE FORMED ARTICLES CONSIST- ING OF A MODIFIED POLYAMIDE" Abstract A process for producing large-size formed articles consisting of a modified polyamide, by polymerization of a mixture containing, besides the omega-lactam corresponding to the polyamide, the following reagents: a) a polymerization catalyst selected from the sodium salt and the potassium salt of said omega-lactam; b) a polyoxyalkylene polyamine having a molecular weight ranging from 400 to 5,000 and an amine functionality rang- ing from 1.9 to 2.5; c) an activator consisting of a polyisocyanate having all the isocyanic groups blocked with a lactam; said reagents being fed, at a temperature of from 105 to 125° C, to a mold heated to 130-170°C.

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