Method for welding and laminating polyamides

Details Method for welding and laminating polyamides Method for welding and laminating polyamides

1988-06-23

1990-01-23

Lesmes, George F.

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

4284747, 428420, C09J 300, C09J 502, B32B 2734

Patent

active

048956120

ABSTRACT:
Polyamide bodies, e.g., foils or sheets, are welding together or laminated by forming methylene bridges between nitrogen atoms in the separate bodies by pressing them together in the presence of a alkaline paraformaldehyde/methanol solution containing a catalytic amount of oxalic acid.

REFERENCES:
patent: 4337111 (1982-06-01), Kauffman et al.
patent: 4575470 (1986-03-01), Fakirov et al.
patent: 4715919 (1987-12-01), Fakirov et al.
patent: 4755431 (1988-07-01), Fakirov et al.
patent: 4761184 (1988-08-01), Markeseini et al.
Lee et al., "New Linear Polymers," McGraw Hill, pp. 141-143, 164-167, (1967).
Arakawa et al., "Thermal Analysis of Drawn Nylon", J. Polymer Sci. Polym. Lett Ed. 6, 513-516, (1968).

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