Process for producing finely divided porous polymer particles

Details Process for producing finely divided porous polymer particles Process for producing finely divided porous polymer particles

1976-05-20

1978-06-13

Welsh, M. J.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

96 67, 260 8, 260 17R, 260 296WB, C08L 3304

Patent

active

040948480

ABSTRACT:
A process for producing finely divided polymer particles which is characterized by using a water drop containing polymer emulsion which is produced by a process comprising dissolving a copolymer containing about 10 to about 70 mol% of a carboxyl group containing vinyl compound in a solvent mixture consisting of about 20 to about 90 weight% of sec-butanol or tert-butanol and about 10 to about 80% by weight of another hydrophobic organic solvent and dispersing the resultant solution in an aqueous medium.

REFERENCES:
patent: 2992101 (1961-07-01), Jelley et al.
patent: 3100755 (1963-08-01), Ehrlich
patent: 3492243 (1970-01-01), Newman et al.
patent: 3767448 (1973-10-01), Hutton
patent: 3849361 (1974-11-01), Zweigle

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