Inversion agents for water-in-oil lattices and methods of use
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United States of America Patent
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Jun 14, 2022
Grant Date -
Feb 11, 2021
app pub date -
Aug 4, 2020
filing date -
Aug 7, 2019
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Abstract
Water-in-oil lattices of water soluble polymers and methods of using the same are presented. The lattices are made, used, and stored having about 15 wt % to 70 wt % polymer solids and further include one or more alkyl ricinoleates. We have found that C1-C6 alkyl ricinoleates added to such lattices facilitate rapid and complete dilution to less than or equal to 1 wt % polymer solids in a continuous water phase. In particular under conditions wherein the water source used to invert the latex is provided at low temperature (−10° C. to 10° C.), or includes a high level of total dissolved solids, or is both low temperature and high total dissolved solids.
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