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Stable hydroalcoholic compositions

DC
  • US 6,090,395 A
  • Filed: 01/09/1997
  • Issued: 07/18/2000
  • Est. Priority Date: 06/22/1995
  • Status: Expired due to Term
First Claim
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1. A composition comprising:

  • a) a major amount of a solvent comprising a lower alcohol and water in a weight ratio of about 60;

    40 to about 100;

    0; and

    b) a thickener system present in an amount of about 0.5% by weight to about 8% by weight, based on the total weight of the composition;

    wherein the thickener system comprises at least one emulsifier in an amount of at least about 0.05% by weight, based on the total weight of the composition;

    wherein the emulsifier comprises;

    (i) at least one hydrophobic group selected from the group of;

    (A) an alkyl group of at least 24 carbon atoms;

    (B) an alkenyl group of at least 24 carbon atoms; and

    (C) an aralkyl or an aralkenyl group of at least 24 carbon atoms; and

    (ii) at least one hydrophilic group selected from the group of;

    (A) an ethylene oxide- and/or propylene oxide-containing group bonded to the hydrophobic group through an ether or ester bond and optionally terminated with a (C1-C36)alkyl ester, (C2-C36)alkenyl ester, or (C6-C36)alkaryl ester;

    (B) an alcohol group;

    (C) a polyhydric alcohol group;

    (D) an ester or ether group of a polyhydric alcohol or polyalkoxylated derivative thereof;

    (E) an ester or ether group of sorbitan or polyalkoxylated derivative thereof having 2-150 moles of alkylene oxide per mole of hydrophobic group; and

    (F) combinations thereof;

    wherein the composition has a melt temperature of greater than about 25°

    C. when in the absence of an auxiliary thickener and a viscosity of at least about 4,000 centipoise at 23°

    C. when in the absence of an auxiliary thickener;

    wherein the viscosity is measured using a very low shear viscometer and T spindles with a heliopath adapter.

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