Process for the production of stabilizer concentrate for polyami

Details Process for the production of stabilizer concentrate for polyami Process for the production of stabilizer concentrate for polyami

1996-09-09

1997-11-11

Hoke, Veronica P.

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

Synthetic resins

Processes of preparing a desired or intentional composition...

25240053, 252401, 252402, 252403, 524 83, 524227, 524230, 524606, C08K 547, C08K 53417

Patent

active

056865139

ABSTRACT:
A process for the production of a polyamide stabilizer concentrate in which the concentrate consists of at least two interactive stabilizer components with defined particle sizes and, optionally, micro-dispersed silicic acid, as well as a wax bonding agent with a solidification temperature t.sub.A between 65.degree. and 120.degree. C., in which a homogeneous mixture of these ingredients is compacted into tablets when subjected to a compression force p that is sufficient to heat the mixture to a temperature of at least 40.degree. C. and equal to t.sub.A minus 10.degree. to 50.degree. C.

REFERENCES:
patent: 2948698 (1960-08-01), Cocci
patent: 2960489 (1960-11-01), Gabler et al.
patent: 3308091 (1967-03-01), Zapp
patent: 3471426 (1969-10-01), Hofton
patent: 3505285 (1970-04-01), Hermann et al.
patent: 3962176 (1976-06-01), Bernert
patent: 4837265 (1989-06-01), Istel et al.

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