US3717575A
Expired / Lapsed
US
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Spandex lubricant
Assignee: BP Corp North America Inc
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Filing: 1971-05-25
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Granted: 1973-02-20
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Expires: 1991-05-25
Abstract
Abstract This invention relates to lubricating finishes for Spandex fibers, which finishes contain a mineral oil, a silicone oil, and an aminoalkyl-modified polyorganosiloxane to which may be added oleic acid or iso-stearic acid and/or butyl stearate. The finishes of this invention prevent blocking of the Spandex fibers, inhibit build-up of the finish on processing rolls, and result in treated Spandex fibers having desirable ''''hand.
Inventors
- 👤 W Rankin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:33
CPC Classifications
D; D06; D06M; D06M15/00; D06M15/19; D06M15/37; D06M15/643; D06M15/6436; D06M7/00; D06M2200/00; D06M2200/40; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/2962; Y10T428/2964; Y10T428/31504; Y10T428/31652; Y10T428/31667
Claims Analysis
Total Claims: 30
Claim 1
Independent Claim
85 words
A lubricating finish for spandex fibers consisting essentially of from 20 to 50 percent by weight of mineral oil, from 20 to 50 percent by weight of a mineral oil-soluble silicone oil of the formula: wherein R may be the same or different monovalent hydrocarbon groups and x is a number such that the silicone oil has a viscosity of from 10 through 350 centistokes at a temperature of 25*C., from 5 to 40 percent by weight of an aminoalkyl-modified polyorganosiloxane of the general formula:
Claim 2
Dependent Claim
85 words
A lubricating finish for spandex fibers consisting essentially of from 20 to 50 percent by weight of mineral oil, from 20 to 50 percent by weight of a mineral oil-soluble silicone oil of the formula: wherein R may be the same or different monovalent hydrocarbon groups and x is a number such that the silicone oil has a viscosity of from 10 through 350 centistokes at a temperature of 25*C., from 5 to 40 percent by weight of an aminoalkyl-modified polyorganosiloxane of the general formula:
Claim 3
Dependent Claim
43 words
A lubricating finish according to claim 1 wherein the silicone oil is of the average formula: (CH3)3Si- O-Si(CH3)2 x-O-Si(CH3)3 wherein x is a number such that the silicone oil has a viscosity of from 10 through 50 centistokes at a temperature of 25*C.
Claim 4
Dependent Claim
15 words
A lubricating finish according to claim 2 wherein x has an average value of 12.5.
Claim 5
Dependent Claim
16 words
A lubricating finish according to claim 1 wherein the aminoalkyl-modified polyorganosiloxane is of the general formula:
Claim 6
Dependent Claim
22 words
A lubricating finish according to claim 4 wherein the average value of a is about 20 and of b is about 180.
Claim 7
Dependent Claim
18 words
A lubricating finish according to claim 1 having a viscosity at 25*C. of from 25 through 75 centistokes.
Claim 8
Dependent Claim
18 words
A lubricating finish according to claim 1 having a viscosity at 25*C. of from 35 through 50 centistokes.
Claim 9
Dependent Claim
86 words
A lubricating finish for spandex fibers consisting essentially of from 30 to 50 percent by weight of mineral oil from 30 to 50 percent by weight of a mineral oil-soluble silicone oil of the formula: wherein R may be the same or different monovalent hydrocarbon groups and x is a number such that the silicone oil has a viscosity of from 10 through 350 centistokes at a temperature of 25*C., and from 5 to 40 percent by weight of an aminoalkyl-modified polyorganosiloxane of the general formula:
Claim 10
Dependent Claim
86 words
A lubricating finish for spandex fibers consisting essentially of from 30 to 50 percent by weight of mineral oil from 30 to 50 percent by weight of a mineral oil-soluble silicone oil of the formula: wherein R may be the same or different monovalent hydrocarbon groups and x is a number such that the silicone oil has a viscosity of from 10 through 350 centistokes at a temperature of 25*C., and from 5 to 40 percent by weight of an aminoalkyl-modified polyorganosiloxane of the general formula:
Claim 11
Dependent Claim
16 words
A lubricating finish according to claim 8 wherein the aminoalkyl-modified polyorganosiloxane is of the general formula:
Claim 12
Dependent Claim
22 words
A lubricating finish according to claim 9 wherein the average value of c is about 20 and of d is about 180.
Claim 13
Dependent Claim
32 words
A lubricating finish according to claim 9 which additionally contains up to 35 percent by weight of at least one acid selected from the group consisting of oleic acid and iso-stearic acid.
Claim 14
Dependent Claim
19 words
A lubricating finish according to claim 9 which additionally contains up to 35 percent by weight of oleic acid.
Claim 15
Dependent Claim
19 words
A lubricating finish according to claim 9 which additionally contains up to 35 percent by weight of butyl stearate.
Claim 16
Dependent Claim
92 words
Spandex fiber coated with at least 3 weight percent of a lubricating finish consisting essentially of from 20 to 50 percent by weight of mineral oil, from 20 to 50 percent by weight of a mineral oil-soluble silicone oil of the formula: wherein R may be the same or different monovalent hydrocarbon groups and x is a number such That the silicone oil has a viscosity of from 10 through 350 centistokes at a temperature of 25*C., from 5 to 40 percent by weight of an aminoalkyl-modified polyorganosiloxane of the general formula:
Claim 17
Dependent Claim
92 words
Spandex fiber coated with at least 3 weight percent of a lubricating finish consisting essentially of from 20 to 50 percent by weight of mineral oil, from 20 to 50 percent by weight of a mineral oil-soluble silicone oil of the formula: wherein R may be the same or different monovalent hydrocarbon groups and x is a number such That the silicone oil has a viscosity of from 10 through 350 centistokes at a temperature of 25*C., from 5 to 40 percent by weight of an aminoalkyl-modified polyorganosiloxane of the general formula:
Claim 18
Dependent Claim
21 words
Spandex fiber coated according to claim 14 with a finish having a viscosity at 25*C. of from 25 through 75 centistokes.
Claim 19
Dependent Claim
21 words
Spandex fiber coated according to claim 14 with a finish having a viscosity at 25*C. of from 35 through 50 centistokes.
Claim 20
Dependent Claim
18 words
Spandex fiber coated according to claim 14 with from 3 through 5 weight percent of said lubricating finish.
Claim 21
Dependent Claim
46 words
Spandex fiber coated according to claim 14 with a finish wherein the silicone oil is of the average formula: (CH3)3Si- O-Si(CH3)2 x-O-Si(CH3)3 wherein x is a number such that the silicone oil has a viscosity of from 10 through 50 centistokes at a temperature of 25*C.
Claim 22
Dependent Claim
18 words
Spandex fiber coated according to claim 18 with a finish wherein x has an average value of 12.5.
Claim 23
Dependent Claim
19 words
Spandex fiber coated according to claim 14 with a finish wherein the aminoalkyl-modified polyorganosiloxane is of the general formula:
Claim 24
Dependent Claim
25 words
Spandex fiber coated according to claim 20 with a finish wherein the average value of a is about 20 and of b is about 180.
Claim 25
Dependent Claim
93 words
Spandex fiber coated with at least 3 weight percent of a lubricating finish consisting essentially of: from 30 to 50 percent by weight of mineral oil, from 30 to 50 percent by weight of a mineral oil-soluble silicone oil of the formula: wherein R may be the same or different monovalent hydrocarbon groups and x is a number such that the silicone oil has a viscosity of from 10 through 350 centistokes at a temperature of 25*C., and from 5 to 40 percent by weight of an aminoalkyl-modified polyorganosiloxane of the general formula:
Claim 26
Dependent Claim
93 words
Spandex fiber coated with at least 3 weight percent of a lubricating finish consisting essentially of: from 30 to 50 percent by weight of mineral oil, from 30 to 50 percent by weight of a mineral oil-soluble silicone oil of the formula: wherein R may be the same or different monovalent hydrocarbon groups and x is a number such that the silicone oil has a viscosity of from 10 through 350 centistokes at a temperature of 25*C., and from 5 to 40 percent by weight of an aminoalkyl-modified polyorganosiloxane of the general formula:
Claim 27
Dependent Claim
19 words
Spandex fiber coated according to claim 22 with a finish wherein the aminoalkyl-modified polyorganosiloxane is of the general formula:
Claim 28
Dependent Claim
25 words
Spandex fiber coated according to claim 23 with a finish wherein the average value of c is about 20 and of d is about 180.
Claim 29
Dependent Claim
35 words
Spandex fiber coated according to claim 23 with a finish which additionally contains up to 35 percent by weight of at least one acid selected from the group consisting of oleic acid and iso-stearic acid.
Claim 30
Dependent Claim
22 words
Spandex fiber coated according to claim 23 with a finish which additionally contains up to 35 percent by weight of oleic acid.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-02-20 | 1976-08-21 | 1977-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-02-20 | 1980-08-21 | 1981-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-02-20 | 1984-08-21 | 1985-02-20 | $7700.00 | Window Closed / Lapsed |