Preparation of high molecular weight polymers

Details Preparation of high molecular weight polymers Preparation of high molecular weight polymers

1996-01-25

1997-05-27

Weber, Thomas R.

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

Synthetic resins

Polymerizing in tubular or loop reactor

5263171, 5263297, C08F 218

Patent

active

056333293

ABSTRACT:
Process for the preparing high molecular weight polymers by polymerization of water-soluble, monoethylenically unsaturated moonomers and, if desired, crosslinkers, and, if desired, water-insoluble monoethylenically unsaturated monomers, in aqueous solution in the presence of polymerization initiators in a tubular reaction which at the end has a conical taper, the ratio of the diameter of the reactor (D1) to the diameter at the end of the conical taper of the reactor (D2) being from 2:1 to 25:1 and the angle between D1 at the beginning of the conical taper and the inner cone wall being >45.degree. and <90.degree., and discharge of the gelatinous reaction mixture from the reactor by injection of an inert gas.

REFERENCES:
patent: 5081215 (1992-01-01), Koch et al.

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