METHOD OF OBTAINING GEL OF (CO) Russian patent published in 2015 - IPC C08F20/06 C08F20/56 C08F4/00 C08F2/10 

FIELD: chemistry.

SUBSTANCE: method of obtaining gel of (co)polymers of acrylic acid and acrylamide is realised by polymerisation or copolymerisation of monomers, initiated by free radicals and carried out in water medium, as source of free radicals used is monomer pair acrylic acid-acrylamide, reaction of (co)polymerisation and further spontaneous gel-formation of obtained (co)polymers after exhaustion of monomer(s) is provided by preliminary removal of oxygen. Oxygen is removed by vacuuming, or blowing with inert gas, or heating to 100°C with further blowing with inert gas. Initial weight ratio acrylic acid/acrylamide constitutes 5-0.2, total initial concentration of monomers constitutes 0.5-6.0 mol/l. Temperature of (co)polymerisation and further gel-formation is selected in the interval 10-70°C.

EFFECT: simplification of polymerisation method realisation.

4 cl, 4 ex