Clear or translucent aqueous fabric softener compositions containing high electrolyte and optional phase stabilizer

• US 6,995,131 B1
• Filed: 05/10/1999
• Issued: 02/07/2006
• Est. Priority Date: 05/10/1999
• Status: Expired due to Fees

• Current Assignee: The Procter & Gamble Company
• Original Assignee: The Procter & Gamble Company
• Inventors: Frankenbach, Gayle Marie, Declercq, Marc Johan, Demeyere, Hugo Jean Marie, Trinh, Toan, Wahl, Errol Hoffman, Baker, Ellen Schmidt, Murphy, Ruth Anne, Hensley, Charles Albert, DuVal, Dean Larry, Wu, Ronghui, Pegoli, Ronald Edward, Kolb, Brent Alan, Baker, Rebecca Gayl, Nogami, Masae, Heiden, Ryan Matthew, Weaver, Michael R., Shaw, John Henry Jr.
• Primary Examiner(s): Hardee, John R.
• Application Number:
  US09/309,128
• Time in Patent Office: 2,465 Days
• Field of Search: 510/522, 510/524, 510/525, 510/527
• US Class Current: 510/527
• CPC Class Codes: C11D 1/62 Quaternary ammonium compounds
• CPC Class Codes: C11D 1/74 Carboxylates or sulfonates esters of polyoxyalkylene glycols
• CPC Class Codes: C11D 1/835 Mixtures of non-ionic with cationic compounds
• CPC Class Codes: C11D 3/0015 liquid

Abstract

Clear, or translucent fabric softener compositions comprise fabric softener compound, principal solvent system, and high electrolyte levels. The high electrolyte level allows for a broader range of principal solvents to be used and/or reduces the incidence of increased viscosity when low levels of principal solvent are used. Phase stabilizers which are primarily ethoxylated hydrophobic materials can be used to reduce the amount of principal solvent that is needed and/or to stabilize the compositions in the presence of the highest levels of electrolyte. Specific phase stabilizers provide additional benefits including improved softening. Specific electrolytes provide improved results. Addition of primary solvents and/or phase stabilizers to the softener compounds can improve the viscosity/handling of the compounds and the ability to create the finished compositions.

Claims

1. A clear, or translucent liquid fabric softener composition comprising:

A. from about 2% to about 80% by weight of the composition of a fabric softener, wherein the fabric softener is chosen from;

(A) a compound having the formula;

wherein each R substituent is hydrogen or short chain C₁—

C₆ alkyl or hydroxyalkyl group, benzyl, or mixtures thereof;

each m is 2 or 3;

each n is from 1 to about 4;

each Y is -O—

(O)C—

, -C(O)—

O—

, -NR—

C(O)—

, or -C(O)—

NR—

;

each R¹ is a hydrocarbyl, or substituted hyddrocarbyl, group, the sum of carbons in each R¹, plus one when Y is -O—

(O)C-, being C₁₂-C₂₂;

the average Iodine Value of the parent fatty acid of the R₁ group being from about 40 to about 140; and

wherein the counterion, X^- is any softener-compatible anion;

(B) a compound having the formula;

wherein each Y, R, R¹, and X^(-) have the same meanings as before; and

(C) mixtures thereof;

B. a principal solvent selected from TMPD having a ClogP of from about −

2.0 to about 2.6;

present at a level of from about 1% to abour 40% by weight of the composition;

C. from about 0.5% to about 10% by weight of the composition of electrolyte;

D. from about 0.1% to about 15% by weight of the composition of a phase stabilizer,

wherein the phase stabilizer is nonionic surfactant derived from an alkyl aryl carboxylic acid compound, wherein said compound has from about 8 to about 18 carbon atoms in the akyl or alkeny chain and contains from about 5 to about 15 of said ethylene oxide moieties to provide an HLB of from about 10 to 18.

2. The composition of claim 1, wherein said compound contains from about 8 to about 12 of said ethylene oxide moieties to provide an HLB of from about 11 to about 15.

3. A composition comprising:

(A) from about 28% to about 35% by weight of the composition of a fabric softener,

wherein the fabric softener is chosen from;

(a) a compound having the formula;

wherein each R substituent is hydrogen or short chain C₁—

C₆ alkyl or hydroxyalkyl group, benzyl, or mixtures thereof;

each m is 2 or 3;

each n is from 1 to about 4;

each Y is -O—

(O)C—

, -C(O)—

O—

, -NR—

C(O)—

, or -C(O)—

NR—

;

each R¹ is a hydrocarbyl, or substituted hyddrocarbyl, group, the sum of carbons in each R¹, plus one when Y is -O—

(O)C-, being C₁₂-C₂₂;

the average Iodine Value of the parent fatty acid of the R₁ group being from about 40 to about 140; and

wherein the counterion, X^- is any softener-compatible anion;

(b) a compound having the formula;

wherein each Y, R, R¹, and X^(-) have the same meanings as before; and

(c) mixtures thereof;

(B) about 4% to about 6% of TMPD;

(C) about 1.75% to about 2.5% by weight of the composition of electrolyte which is either MgCl₂ or mixtures of MgCl₂ and CaCl₂; and

(D) about 5% to about 6% by weight of the composition of a nonionic surfactant derived from saturated primary and/or branched fatty alcohols having from about 9 to about 11 carbon atoms in a hydrophobic chain ethoxylated with from an average of about 7 to about 9 ethylene oxide moieties and from about 0.5% to about 1% of a second nonionic surfactant which is a block copolymer comprising of ethylene oxide and propylene oxide.