Use of rubber solvent-resin solvent and miscella mixtures for ex

Details Use of rubber solvent-resin solvent and miscella mixtures for ex Use of rubber solvent-resin solvent and miscella mixtures for ex

1985-04-29

1987-07-21

Schofer, Joseph L.

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

Synthetic resins

Treating polymer containing material or treating a solid...

528494, 528495, 528498, 528930, 528933, 528502, C08C 104

Patent

active

046819290

ABSTRACT:
A process for extracting resin and rubber from guayule plants utilizing a portion of recycled miscella and a fresh solvent system. An expression step is applied to the plants to enhance recovery of resin and rubber extract. The solvent system is preferably an organic polar solvent and a hydrocarbon solvent for rubber for simultaneous resin and rubber extraction containing at least 50% by weight of the hydrocarbon solvent. The process can be a one-step method wherein resin and rubber are generally simultaneously extracted.

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patent: 4405532 (1983-09-01), Gutierrez et al.
patent: 4435337 (1984-03-01), Kay et al.
patent: 4530995 (1985-07-01), Gutierrez et al.
patent: 4591631 (1986-05-01), Beattie et al.
"Hackh's Chemical Dictionary", J. Grant (ed.), Mc-Graw-Hill, Inc., N.Y. (1969), pp. 578-579.

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