Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Processes of preparing a desired or intentional composition...
Patent
1982-06-04
1983-06-14
Jacobs, Lewis T.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Processes of preparing a desired or intentional composition...
524845, 524847, 524879, C08L 7702
Patent
active
043884253
ABSTRACT:
Concentrates of from 20 to 50% by weight of titanium dioxide in polycaprolactam are produced by a process in which a 5-15% strength by weight aqueous suspension of titanium dioxide is metered into a solution of caprolactam in water at from 100.degree. to 150.degree. C. at the same rate at which water is distilled off, and after the water has been distilled off the resulting mixture is polymerized at from 240.degree. to 280.degree. C.
REFERENCES:
patent: 2868757 (1959-01-01), Symons
Klare's "Synthetische Fasern aus Polyamiden" Akademie-Verlag, Berlin, 1963, p. 170.
Hoerauf Werner
Strehler Hugo
Valentin Guenter
BASF - Aktiengesellschaft
Jacobs Lewis T.
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