Process for preparing elastomeric copolymers of ethylene and hig

Details Process for preparing elastomeric copolymers of ethylene and hig Process for preparing elastomeric copolymers of ethylene and hig

1975-02-07

1977-03-22

Schofer, Joseph L.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526125, 526185, 526348, 526916, C08F21000, C08F21200, C08F11002

Patent

active

040138232

ABSTRACT:
High yields of elastomeric copolymers of ethylene and higher alpha-olefins, or of ethylene, higher alpha-olefins and unsaturated monomers (polyenes) containing two or more double bonds are obtained by copolymerizing a mixture of the monomers in contact with a catalyst prepared by mixing a catalyst-forming component which is an organometallic compound of aluminum with a supported catalyst-forming component obtained by contacting a halogenated titanium compound with a carrier or support consisting of or comprising an anhydrous Mg or Mn halide partially or completely complexed with a Lewis base capable of forming a complex with it.
The copolymers so obtained have valuable mechanical properties, in particular a relatively low value of permanent set and do not exhibit excessive residual deformation at break.

REFERENCES:
patent: 3642746 (1972-02-01), Kashiwa

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