← Back to Patent Explorer
US4049858A Expired / Lapsed US ⏱️ 0.0 years remaining

Article for softening fabrics in an automatic clothes dryer

Assignee: Procter and Gamble Co
•
Filing: 1974-12-12
•
Granted: 1977-09-20
•
Expires: 1994-12-12
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

Abstract An article for softening fabrics in an automatic clothes drier comprises a non-staining fabric softening mixture being substantially free of un-neutralized fatty acids in releasable combination with a dispensing means. The softening mixture comprises a fabric softening component consisting of sorbitan esters in combination with a phase-modifying component consisting of fatty acid soaps or mixtures thereof with tallow alkyl sulfates.

Inventors

  • 👤 Alan P. Murphy

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-03 09:15
CPC Classifications
C; C11; C11D; C11D17/00; C11D17/04; C11D17/041; C11D17/047; C11D3/00; C11D3/0005; C11D3/001; D; D06; D06M; D06M13/00; D06M13/10; D06M13/224; D06M13/244; D06M13/248; D06M13/262; D06M23/00; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24273; Y10T428/24298; Y10T428/24314; Y10T428/31504; Y10T428/31971; Y10T428/31993; Y10T428/31996; Y10T442/00; Y10T442/20; Y10T442/2352

Claims Analysis

Total Claims: 11
Claim 1
Independent Claim 203 words
A non-staining fabric softening article, especially adapted for use in an automatic clothes dryer, comprising: a. a fabric conditioning amount of a softener mixture being substantially free of unneutralized fatty acids, said mixture comprising a fabric softener component and a phase-modifying component wherein the presence of said phase-modifying component causes the formation in the dryer of a mesomorphic phase of the softener mixture, wherein: i. the fabric softener component is selected from the group consisting of sorbitan esters characterized by at least one free hydroxyl group and a melting point of at least about 38° C., and mixtures thereof; and ii. the phase-modifying component is selected from the group consisting of water-soluble fatty acid soaps, and mixtures thereof with water-soluble C 10 -C 20 neutralized alkyl sulfates, the weight ratio of said softener component to said phase-modifying component being in the range of from about 100:1 to about 1:1; said softener mixture being characterized by a melting point in the range of from about 38° C. to about 100° C., said mixture being in releasable combination with; b. means for dispensing the softener mixture when said softening article is tumbled with damp fabrics in the dryer under heat sufficient to melt the mixture.
Claim 2
Dependent Claim 203 words
A non-staining fabric softening article, especially adapted for use in an automatic clothes dryer, comprising: a. a fabric conditioning amount of a softener mixture being substantially free of unneutralized fatty acids, said mixture comprising a fabric softener component and a phase-modifying component wherein the presence of said phase-modifying component causes the formation in the dryer of a mesomorphic phase of the softener mixture, wherein: i. the fabric softener component is selected from the group consisting of sorbitan esters characterized by at least one free hydroxyl group and a melting point of at least about 38° C., and mixtures thereof; and ii. the phase-modifying component is selected from the group consisting of water-soluble fatty acid soaps, and mixtures thereof with water-soluble C 10 -C 20 neutralized alkyl sulfates, the weight ratio of said softener component to said phase-modifying component being in the range of from about 100:1 to about 1:1; said softener mixture being characterized by a melting point in the range of from about 38° C. to about 100° C., said mixture being in releasable combination with; b. means for dispensing the softener mixture when said softening article is tumbled with damp fabrics in the dryer under heat sufficient to melt the mixture.
Claim 3
Dependent Claim 30 words
An article according to claim 1 wherein the softener component is selected from the group consisting of C 10 -C 24 alkyl mono-, di-, and tri-sorbitan esters, and mixtures thereof.
Claim 4
Dependent Claim 66 words
An article according to claim 1 wherein the softener component is selected from the group consisting of sorbitan monolaurate, sorbitan monomyristate, sorbitan monopalmitate, sorbitan monostearate, sorbitan dilaurate, sorbitan dimyristate, sorbitan dipalmitate, sorbitan distearate, and mixtures thereof, and wherein the phase-modifying component is a water-soluble fatty acid soap, or mixtures thereof, at a weight ratio of sorbitan ester to soap of from about 100:1 to about 1:1.
Claim 5
Dependent Claim 15 words
An article according to claim 3 wherein the soap is in the sodium salt form.
Claim 6
Dependent Claim 19 words
An article according to claim 4 wherein the soap is sodium tallowalkyl soap, sodium coconutalkyl soap, or mixtures thereof.
Claim 7
Dependent Claim 15 words
An article according to claim 1 wherein the dispensing means is in a sheet conformation.
Claim 8
Dependent Claim 18 words
An article according to claim 6 wherein the article is a woven or non-woven cloth or paper sheet.
Claim 9
Dependent Claim 15 words
An article according to claim 6 wherein the sheet is provided with slits or holes.
Claim 10
Dependent Claim 31 words
An article according to claim 8 wherein the softener component is selected from the group consisting of the C 10 -C 22 alkyl mono- and di-esters of sorbitan, and mixtures thereof.
Claim 11
Dependent Claim 22 words
An article according to claim 9 wherein the phase-modifying component is a sodium coconutalkyl soap, a sodium tallowalkyl soap, or mixtures thereof.

References Cited (Backward Citations)

US2112963A Cited
US2461043A Cited
US2978408A Cited
US3213030A Cited
US3686025A Cited
US3666661A Cited
US3650816A Cited
US3654060A Cited
US3698095A Cited
US3793196A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1980-09-19 1981-03-21 1981-09-20 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1984-09-19 1985-03-21 1985-09-20 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1988-09-19 1989-03-21 1989-09-20 $7700.00 Window Closed / Lapsed

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag