Discrete bead polymer process

Details Discrete bead polymer process Discrete bead polymer process

1980-01-07

1981-03-10

Ziegler, J.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

525274, 525288, C08F 200

Patent

active

042555450

ABSTRACT:
Discrete particles of sodium polyacrylate of high molecular weight and in which the majority of the particle size is in the range of not less than 0.5 mm. nor more than 1.0 mm. diameter are achieved, in an economy of production, by suspension polymerization in stages of 40.degree. C. (2 hours), 50.degree. C. (2 hours) and 60.degree. C. (2 hours) in the presence of a protective colloid.

REFERENCES:
patent: 4011388 (1977-03-01), Murphy et al.

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