Gelled organic liquids
AssigneeCandle Corporation of America
InventorsJohn N. Wesley, Amjad Farooq, Ammanuel Mehreteab, Francis T. Barbato
Life of this patent
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Abstract
Organic liquids can be very effectively gelled by using in combination with an amine neutralized anionic polymer an auxiliary rheological additive. The auxiliary rheological additive is a substance which increases the linearity of the anionic polymer and its thixotropic properties. Suitable auxiliary rheological additives are amphoteric oxides and/or fatty acids and/or fatty acid salts. The organic liquids that can be effectively gelled are organic solvents which include fuels such as hydrocarbons and alcohols.
Claims19
A polymeric gel having increased viscosity provided by an auxiliary rheological additive comprising approximately by weight:
- (a) 0.1 to 10.0 weight percent of an anionic polymer at least partially neutralized through the addition of at least one organic base to neutralize said anionic polymer and to form a gel;
- and
- (b) 0.01 to 10.0 percent by weight of an amphoteric oxide auxiliary rheological additive;
- and
- (c) the balance being primarily at least one organic solvent;
- wherein the polymeric gel is viscoelastic and has a G' value of at least 80 dynes/sq. cm at a frequency of 10 radians/second, a G" value of at least 10 dynes/sq. cm. at a frequency of 10 radians/second, a ratio of G"/G' of less than 1, G' being substantially constant over a torque range of 1 to 100 micro N.m. with the viscosity of the polymeric gel being increased by such auxiliary rheological additive such that the content of the anionic polymer in the polymeric gel can be decreased by 10 percent to 75 percent by weight and replaced with said auxiliary rheological additive and the polymeric gel has essentially an equivalent viscosity due to the presence of said auxiliary rheological additive.
A polymeric gelled fuel composition having an increased viscosity provided by an auxiliary rheological additive comprising approximately by weight:
- (a) 0.1 to 3 percent by weight of an anionic polymer at least partially neutralized through the addition of at least one organic base to neutralize said anionic polymer and to form a gel;
- (b) 0.01 to 4 percent by weight of an amphoteric oxide auxiliary rheological additive;
- and
- (c) the balance being primarily a fuel;
- wherein the polymeric gel is viscoelastic and has a G' value of at least 80 dynes/sq. cm at a frequency of 10 radians/second, a G" value of at least 10 dynes/sq. cm. at a frequency of 10 radians/second, a ratio of G"/G' of less than 1, G' being substantially constant over a torque range of 1 to 100 micro N.m. with the viscosity of the polymeric gel being increased by said auxiliary rheological additive such that the content of the anionic polymer in the polymeric gel can be decreased by 10 percent to 75 percent by weight and the polymeric gel has essentially an equivalent viscosity due to the presence of said auxiliary rheological additive.
Dependencies are inferred from the claim text.