Method for removing catalyst residues from atactic polypropylene

Details Method for removing catalyst residues from atactic polypropylene Method for removing catalyst residues from atactic polypropylene

1980-11-24

1982-02-16

Henderson, C. A.

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

Synthetic resins

Treating polymer containing material or treating a solid...

528498, 528501, 528503, C08F 608

Patent

active

043160085

ABSTRACT:
Process for removing catalyst residues from atactic polypropylene is disclosed which comprises contacting the polypropylene with an aqueous solution of an alpha-hydroxysulfonic acid and then separating the polypropylene-containing phase from the aqueous phase.

REFERENCES:
patent: 3080353 (1963-03-01), Bonvicini
patent: 3125560 (1964-03-01), Rose
patent: 3268501 (1966-08-01), Crouch
patent: 3310541 (1967-03-01), Breuers
patent: 3338878 (1967-08-01), Kutner

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