METHOD OF PREPARING SUPERHIGH MOLECULAR POLYETHYLENE SOLUTION Russian patent published in 1998 - IPC

FIELD: chemistry of polymers, more particularly preparation of superhigh molecular polyethylenes (SHMPE) used in gel formation of fibrous film materials. SUBSTANCE: claimed method comprises suspending polymers in solvent, producing neutral medium, dissolving SHMPE at mixing rate of 100-200 rpm for 6-15 minutes. Prior to suspension stage solvent is prepared. Said solvent includes mixture of liquid paraffin having C₁₂-C₁₈ chain and solid paraffin having C₂₄-C₄₀ chain, the ratio of components being from 10-90 to 90-10%, respectively. EFFECT: improved quality of SHPME solution, higher concentration of the solution and shorter technological process time. 2 tbl