Patent US3844825A successfully refreshed from Google Patents.
US3844825A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing an acrylic fiber having an improved touch like animal hair
Assignee: Wyeth Holdings LLC
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Filing: 1972-11-30
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Granted: 1974-10-29
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Expires: 1992-11-30
Abstract
Abstract There is disclosed a process for improving the tactile qualities of acrylic fibers comprising treatment thereof with effective quantities of a mixture of suitable proportions of an acrylonitrile copolymer containing certain amounts of a comonomer containing a long-chain alkyl group and suitable proportions of a silicone polymer. Tactile qualities resemble those of animal hair fibers.
Inventors
- 👤 K Tanahashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 16:58
CPC Classifications
D; D06; D06M; D06M15/00; D06M15/19; D06M15/37; D06M15/643; D06M15/21; D06M15/31; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/2962; Y10T428/2964; Y10T428/2967; Y10T428/31504; Y10T428/31652; Y10T428/31663; Y10T428/31855
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
111 words
A PROCESS FOR IMPROVING THE TACTILE QUALITIES OF ACRYLIC FIBERS WHICH COMPRISES TREATING SAID FIBERS WITH A LIQUID MEDIUM INERT WITH RESPECT TO SAID FIBERS CONTAINING THEREIN A MIXTURE OF (A) FROM ABOUT 10 TO 60 WEIGHT PERCENT OF A COPOLYMER OF (1) 70-92 MOLE PERCENT OF ACRYLONITRILE, (2) 30-8 MOLE PERCENT OF A MONOMER OF A FORMULA SELECTED FROM CH2=CR1COOR2 AND CH2=CHOCOR3, WHEREIN R1 IS SELECTED FROM HYDROGEN AND METHYL AND R2 AND R3 ARE INDIVIDUALLY SELECTED FROM ALKYL OF 10 TO 18 CARBON ATOMS, AND (3) FROM 0-22 MOLE PERCENT OF ANOTHER COPOLYMERIZABLE MONOMER, AND (B) FROM 90 TO 40 WEIGHT PERCENT OF A SILICONE POLYMER OF THE FORMULA:
Claim 2
Dependent Claim
111 words
A PROCESS FOR IMPROVING THE TACTILE QUALITIES OF ACRYLIC FIBERS WHICH COMPRISES TREATING SAID FIBERS WITH A LIQUID MEDIUM INERT WITH RESPECT TO SAID FIBERS CONTAINING THEREIN A MIXTURE OF (A) FROM ABOUT 10 TO 60 WEIGHT PERCENT OF A COPOLYMER OF (1) 70-92 MOLE PERCENT OF ACRYLONITRILE, (2) 30-8 MOLE PERCENT OF A MONOMER OF A FORMULA SELECTED FROM CH2=CR1COOR2 AND CH2=CHOCOR3, WHEREIN R1 IS SELECTED FROM HYDROGEN AND METHYL AND R2 AND R3 ARE INDIVIDUALLY SELECTED FROM ALKYL OF 10 TO 18 CARBON ATOMS, AND (3) FROM 0-22 MOLE PERCENT OF ANOTHER COPOLYMERIZABLE MONOMER, AND (B) FROM 90 TO 40 WEIGHT PERCENT OF A SILICONE POLYMER OF THE FORMULA:
Claim 3
Dependent Claim
22 words
The process of claim 1 wherein said copolymer consists of 27 mole percent of octadecyl acrylate and 73 mole percent of acrylonitrile.
Claim 4
Dependent Claim
22 words
The process of claim 1 wherein said copolymer consists of 14 mole percent of octadecyl acrylate and 86 mole percent of acrylonitrile.
Claim 5
Dependent Claim
12 words
The process of claim 1 wherein said silicone polymer is dimethyl polysiloxane.
Claim 6
Dependent Claim
25 words
The process of claim 3 wherein said silicone polymer is dimethyl polysiloxane and is present in said mixture in the amount of 60 weight percent.
Claim 7
Dependent Claim
14 words
The process of claim 1 wherein said acrylic fiber is treated in wet-gel form.
Claim 8
Dependent Claim
11 words
The process of claim 1 wherein said liquid medium is water.
Claim 9
Dependent Claim
23 words
The process of claim 1 wherein said treating is carried out so as to deposit upon said fibers 1 percent of said mixture.
Claim 10
Dependent Claim
19 words
The process of claim 6 wherein said medium is removed from said fibers by dry heat treatment at 105*C.
Claim 11
Dependent Claim
21 words
The process of claim 9 wherein said fibers after removal of said medium are subjected to relaxation in steam at 127*C.
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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) | 1977-10-28 | 1978-04-29 | 1978-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-28 | 1982-04-29 | 1982-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-28 | 1986-04-29 | 1986-10-29 | $7700.00 | Window Closed / Lapsed |