Heat resistance and salt tolerance type polyether sulfonic acid salt and synthetic method thereof

The invention discloses a heat resistance and salt tolerance type polyether sulfonic acid salt. The polyether sulfonic acid salt can resist the high temperature up to 200-300 DEG C. the range of anti-formation water salinity is from 0-220000 mg/L. The polyether sulfonic acid salt can be used as a heat resistance and a salt tolerance type thickened oil viscosity reducer. A structural general formula of the heat resistance and salt tolerance type polyether sulfonic acid salt is the following formula I: R-O-(A) m-(B) n-CH2CH (OH) CH2-O-CH2CH2CH2-SO3MI, wherein, the R represents nonylphenyl, octylphenyl or dodecyl phenyl, the A represents oxygen allyl, -CH2CH (CH3) O-, the m is an oxygen acrylic base number which selects one of integers from 0 to 5, the B represents oxygen vinyl and -CH2CH2O-, the n is an oxygen ethyl number which selects one of integers from 1 to 10, and the M represents potassium ion K+ or sodion Na+.