Process for producing water-insoluble polymers of uniform shape

Details Process for producing water-insoluble polymers of uniform shape Process for producing water-insoluble polymers of uniform shape

1982-07-15

1985-05-28

Henderson, Christopher A.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526287, 526306, 5263231, C08F 220

Patent

active

045201781

ABSTRACT:
A process for producing a water-insoluble polymer of uniform shape having high strength and a desired geometric form is disclosed. This process comprises the steps of dissolving or partially suspending in water (a) a water-soluble salt of alginic acid, (b) a hydrophilic, crosslinkable vinyl monomer having two or more radical-polymerizable vinyl groups per molecule, and (c) optionally a hydrophilic, radical-polymerizable vinyl monomer; bringing the resulting aqueous solution or suspension into contact with an aqueous solution capable of causing gelation of the water-soluble salt of alginic acid and thereby forming an water-insoluble gel of uniform shape; and subjecting the gel to radical polymerization to produce a water-insoluble polymer.

REFERENCES:
patent: 3953386 (1976-04-01), Murphy
patent: 4238569 (1980-12-01), Lim
Condensed Chem. Dict., Reinhold Publ. (NY), 1961, p. 37.

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