Water soluble polymer dispersions
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United States of America Patent
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Apr 4, 1995
Grant Date -
N/A
app pub date -
May 13, 1993
filing date -
May 18, 1992
priority date (Note) -
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Abstract
The invention relates to aqueous dispersions of water soluble polymers, formed by polymerization of a mixture A of various monomer components (a1, a2, and possibly a3) in the presence of a polymeric dispersant D; wherewith the mixture A is comprised of the following different monomer a1 (in the amount of 99-70 wt. %), comprised of at least one water soluble monomer, a2 (in the amount of 1-30 wt. %), comprised of at least one hydrophobic monomer, and (possibly) a3 (in the amount of 0-20 wt. %), comprised of at least one amphipathic monomer, wherewith in each instance the sum of the amounts of a1, a2, and a3 is 100%; and wherewith the water soluble polymers have a mean molecular weight M.sub.w (gravimetric mean) of at least 10.sup.6 Dalton.
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