Process for extruding and cross-linking olefin polymers, diolefi

Details Process for extruding and cross-linking olefin polymers, diolefi Process for extruding and cross-linking olefin polymers, diolefi

1978-09-19

1980-06-24

Hamrock, William F.

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

Synthetic resins

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

260 4232, 260 4233, 260 4239, 425DIG16, C08F 830

Patent

active

042095972

ABSTRACT:
A process is provided for extruding and cross-linking olefin polymers, diolefin polymers and copolymers thereof with other olefins, diolefins, or monomers copolymerizable therewith, using as the cross-linking agent an azo compound of the formula: ##STR1## wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are alkyl having from one to about six carbon atoms.
The process is of particular application in the production of cross-linked pipe of such polymers and copolymers.

REFERENCES:
patent: 2469819 (1949-05-01), Flory et al.
patent: 2994357 (1961-08-01), Serniuk et al.
patent: 4129531 (1978-12-01), Rauer et al.

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