Patent US4767548A successfully refreshed from Google Patents.
US4767548A
Expired / Lapsed
US
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Articles for conditioning fabrics in a laundry dryer
Assignee: Dow Silicones Corp
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Filing: 1986-08-06
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Granted: 1988-08-30
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Expires: 2006-08-06
Abstract
Abstract Antistatic fabric softening articles comprising cationic fabric softening agents in combination with a polydiorganosiloxane component on a flexible substrate are described. The polydiorganosiloxane component may be a polydimethylsiloxane, a polyphenylmethylsiloxane, or a dimethylsiloxane-glycol copolymer. The fabric conditioning composition is releasably affixed or incorporated into a substrate from which it is transferred to fabrics in an automatic laundry dryer.
Inventors
- 👤 Kenneth A. Kasprzak
- 👤 Terence J. Swihart
- 👤 Andrew H. Ward
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 07:11
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/16; C11D3/37; C11D3/3703; C11D3/373; C11D3/3738; C11D1/00; C11D1/38; C11D1/62; C11D17/00; C11D17/04; C11D17/041; C11D17/047
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
126 words
An article of manufacture adapted for providing fabric conditioning within an automatic laundry dryer, the article consisting essentially of a flexible substrate having affixed thereto a fabric conditioning amount of a conditioning composition having a melting point above about 38° C. and being flowable at dryer operating temperatures, the composition comprising (A) a cationic, fabric-softening agent and (B) from about 0.2 to 11 percent by weight based on the fabric softening agent of a polydiorganosiloxane component having a viscosity from 80 to 2,000 cSt at 25° C. and selected from the group consisting of unsubstituted polydimethylsiloxane and unsubstituted polyphenylmethylsiloxanes, said composition being affixed to the substrate in a manner which provides for release of the conditioning composition within an automatic laundry dryer at dryer operating temperatures.
Claim 2
Dependent Claim
126 words
An article of manufacture adapted for providing fabric conditioning within an automatic laundry dryer, the article consisting essentially of a flexible substrate having affixed thereto a fabric conditioning amount of a conditioning composition having a melting point above about 38° C. and being flowable at dryer operating temperatures, the composition comprising (A) a cationic, fabric-softening agent and (B) from about 0.2 to 11 percent by weight based on the fabric softening agent of a polydiorganosiloxane component having a viscosity from 80 to 2,000 cSt at 25° C. and selected from the group consisting of unsubstituted polydimethylsiloxane and unsubstituted polyphenylmethylsiloxanes, said composition being affixed to the substrate in a manner which provides for release of the conditioning composition within an automatic laundry dryer at dryer operating temperatures.
Claim 3
Dependent Claim
30 words
An article according to claim 1 wherein the cationic, fabric softening agent is as a quaternary ammonium salt having at least one alkyl substituent containing 10 to 22 carbon atoms.
Claim 4
Dependent Claim
29 words
An article according to claim 2 wherein the article is further characterized by having a weight ratio of conditioning composition to flexible substrate which ranges from 0.2:1 to 5:1.
Claim 5
Dependent Claim
27 words
An article according to claim 3 wherein the conditioning composition contains 0.2 to 2 percent by weight based on the fabric softening agent of the polydiorganosiloxane component.
Claim 6
Dependent Claim
21 words
An article according to claim 4 wherein the polydiorganosiloxane component has a viscosity of 100 to 2000 cSt at 25° C.
Claim 7
Dependent Claim
16 words
An article according to claim 5 wherein the polydiorganosiloxane component is a trimethylsiloxy terminated linear polydimethylsiloxane.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-08-30 | 1992-02-29 | 1992-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-08-30 | 1996-02-29 | 1996-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-08-30 | 2000-02-29 | 2000-08-30 | $7700.00 | Window Closed / Lapsed |