Nylon compositions and RIM process for making same

Details Nylon compositions and RIM process for making same Nylon compositions and RIM process for making same

1982-01-18

1983-08-23

Lee, Lester L.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

264240, 525408, 525409, 525430, 525533, 528116, 528117, 528118, 528323, C08G 6916, C08G 6924

Patent

active

044004907

ABSTRACT:
Nylon compositions are prepared by anionic polymerization of at least 75% of a lactam with up to about 25% of an epoxy component in the presence of a basic catalyst and a promoter that can be used in lactam polymerization wherein, in a preferred embodiment, the epoxy component is a modified epoxy resin containing physical property enhancing constituents. The nylon compositions are prepared by mixing a fraction of a lactam with the epoxy component and the promotor to form liquid mixture A, mixing remaining lactam with the catalyst to form liquid mixture B, mixing liquid mixtures A and B in the ratio ranging from 1/1 to 4/1 to form liquid mixture C, injecting liquid mixture C into a mold maintained at a temperature of about 100.degree. to 200.degree. C. wherein a chemical reaction takes place whereby the liquid is converted to a solidified mass in less than about 2 minutes, and removing the nylon composition in the form of a molded object.

REFERENCES:
patent: 2847341 (1958-08-01), Kohn
patent: 2847342 (1958-08-01), Kohn
patent: 2847343 (1958-08-01), Kohn
patent: 3622540 (1971-11-01), Hashimoto et al.
patent: 3642974 (1972-02-01), Jacobi et al.
patent: 3644296 (1972-02-01), Bosch
patent: 3838976 (1974-10-01), Bosch
patent: 4309373 (1982-01-01), Althausen et al.

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