Patents

Rohm and Haas Patents Way to

August 9, 2005

Patent No. U.S. 6,337,366 B1
Rohm and Haas has patented a
method of improving viscosity stability
of an aqueous composition by
adding a mixture of at least one multiphobe
that is comprised of at least
one hydrophilic segment and at least
two hydrophobic segments; wherein
the Mn of said multiphobe
hydrophilic segment is greater than
2,000; wherein the hydrophobicity of
said multiphobe hydrophobic segment
is sufficient to form non-specific
hydrophohic associations; and at least
one monophobe comprised of at least
one hydrophilic segment and only one
hydrophobic segment; wherein the Mn
of the monophobe hydrophilic segment
is at least half of the Mn of said monophobe
hydrophilic segment, wherein
the hydrophobicity of the monophobe
hydrophobic segment is sufficient to
form non-specific hydrophobic associations.
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