Method of manufacturing cross-linked moulded objects from cross-

Details Method of manufacturing cross-linked moulded objects from cross- Method of manufacturing cross-linked moulded objects from cross-

1976-04-14

1979-02-06

Thurlow, Jeffery R.

Plastic and nonmetallic article shaping or treating: processes

Treating shaped or solid article

By a temperature change

264209, 264236, 427340, 427400, B29C 2500

Patent

active

041384628

ABSTRACT:
The cross-linking of a moulded object based on polymeric materials is effected by heating the object in the presence of a liquid medium containing one or more peroxides under conditions that cause penetration, and the heating is continued at increasing temperatures to cause a homogeneous cross-linking.
Employable peroxides are substantially stable under the first heating step but are cleaved into free radicals during the second heating step, at least the cross-linking step being carried out with the object enclosed in a liquid of approximately the same density as the polymeric material.

REFERENCES:
patent: 2774110 (1956-12-01), Walters
patent: 3051992 (1962-09-01), Bradley
patent: 3198868 (1956-08-01), Pedretti et al.
patent: 3479446 (1969-11-01), Arnaudin, Jr. et al.
patent: 3576933 (1971-04-01), Bates et al.
patent: 3720744 (1973-03-01), Santangelo
patent: 3773885 (1973-11-01), Boone
patent: 3787550 (1974-01-01), McGillvary et al.
patent: 3886100 (1975-05-01), Yasuda et al.

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