Process for depolymerization of butyl rubbers and halobutyl rubb

Details Process for depolymerization of butyl rubbers and halobutyl rubb Process for depolymerization of butyl rubbers and halobutyl rubb

1991-12-20

1994-02-01

Schofer, Joseph L.

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

Synthetic resins

Treating polymer containing material or treating a solid...

528499, C08F 604

Patent

active

052833186

ABSTRACT:
The present invention relates to a process for depolymerizing and dehalogenating rubber materials by heating the rubber materials with neutral liquid water at temperatures from about 200.degree. C. up to the critical temperature of water at autogenous pressure. The process has utility in degrading rubber materials, and further does not release hydrogen halogen into a gas phase.

REFERENCES:
patent: 1805712 (1931-05-01), Bradley et al.
patent: 3083193 (1963-03-01), Kolner et al.
patent: 3634381 (1972-01-01), Lehnerer
patent: 3683511 (1972-08-01), Johnson et al.
European Search Report for EP 92311503 and communication dated Dec. 5, 1993.

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