C - Chemistry – Metallurgy – 08 – G
Patent
C - Chemistry, Metallurgy
08
G
18/715
C08G 69/14 (2006.01) C08G 69/16 (2006.01) C08G 69/20 (2006.01)
Patent
CA 1214012
ABSTRACT OF THE DISCLOSURE This invention relates to reaction injection molding of a lactam composition containing a catalyst and a promoter agent that is a combination of a first promoter that imparts a short pot life and a short mold time and a second promoter that imparts a long pot life and a long mold time or a catalyst quencher, which attenuate the action of the first promoter in order to provide a molding composition having a long pot life and a short mold time. The use of the promoter agent does away with the need to mix a separate monomer stream containing catalyst with another monomer stream containing promoter and, therefore, does not require high speed impinging mixing heads which limit the type of additives, especially fillers, that can be admixed.
444914
Goodrich (b.,f.) Company (the)
Marcoux & Sher Swabey Mitchell Houle
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