Patent US3772069A successfully refreshed from Google Patents.
US3772069A
Expired / Lapsed
US
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Bonded nonwoven sheet bearing a lubricating composition of a liquid polysiloxane and a liquid polyoxypropylene compound
Assignee: Van Dorn Co
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Filing: 1971-03-17
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Granted: 1973-11-13
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Expires: 1991-03-17
Abstract
Abstract A bonded nonwoven sheet of synthetic organic fibers having applied thereon a lubricating composition comprising 3-50 percent by weight of liquid polysiloxane and 50-97 percent by weight of defined liquid polyoxypropylene compound, in an amount such that the quantity of polysiloxane present on the sheet is in the range of about 0.06 to 0.8 percent by weight. This lubricated nonwoven fabric is suitable as a primary carpet backing which has high strength after tufting and performs acceptably in continuous dyeing operations.
Inventors
- 👤 J Daniel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 20:27
CPC Classifications
D; D06; D06M; D06M15/00; D06M15/19; D06M15/37; D06M15/643; D06M15/647; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31652; Y10T428/31667; Y10T428/31855; Y10T428/31938; Y10T442/00; Y10T442/20; Y10T442/2311; Y10T442/2328; Y10T442/2861; Y10T442/291; Y10T442/2918
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
14 words
The sheet of claim 1 wherein the synthetic organic fibers are continuous pOlypropylene filaments.
Claim 2
Dependent Claim
10 words
The sheet of claim 2 wherein the polysiloxane is polymethylhydrogensiloxane.
Claim 3
Dependent Claim
24 words
The sheet of claim 3 wherein the lubricating composition comprises 5-20 percent by weight of polysiloxane and 80-95 percent by weight of polyoxypropylene compound.
References Cited (Backward Citations)
US2757094A
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US2955047A
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GB828735A
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US3140198A
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US3322607A
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US3620823A
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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) | 1976-11-12 | 1977-05-14 | 1977-11-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-12 | 1981-05-14 | 1981-11-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-12 | 1985-05-14 | 1985-11-13 | $7700.00 | Window Closed / Lapsed |