Patent ID: 11891458
Assignee: DALIAN RESEARCH INSTITUTE OF PETROLEUM AND PETROCHEMICALS, SINOPEC CORP.
Field: Macromolecular chemistry, polymers (Chemistry)
Classification: CPC C  E | IPC C  E

Claim 4:
5. The method of claim 4, wherein the inorganic salt in step (3) is selected from the group consisting of sodium chloride, sodium bromide, sodium sulfate, sodium sulfite, sodium carbonate, sodium bicarbonate, sodium nitrate, sodium phosphate, sodium hydrogen phosphate, sodium silicate, potassium chloride, potassium bromide, potassium sulfate, potassium sulfite, potassium carbonate, potassium bicarbonate, potassium nitrate, potassium phosphate, potassium hydrogen phosphate, potassium silicate, ammonium chloride, ammonium bromide, ammonium nitrate, calcium chloride, calcium bromide, magnesium chloride, magnesium bromide, magnesium sulfate, magnesium nitrate, and mixtures thereof.