US3975351A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plasticizers as adhesion promoters in polyester/polyamide heterofilaments
Assignee: Imperial Chemical Industries Ltd
•
Filing: 1972-01-27
•
Granted: 1976-08-17
•
Expires: 1992-01-27
Abstract
Abstract The present invention relates to a process for improving the adhesion between normally non-adhesive components in a multi-component polymeric fiber by the addition of one or more defined plasticizers to one or more of the components.
Inventors
- 👤 Sylvia Etchells
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:18
CPC Classifications
D; D01; D01F; D01F8/00; D01F8/04; D01F8/12; D01F8/14; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2929; Y10T428/2931
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
61 words
A process for improving adhesion between heterofilament components of polyester and polyamide, which components are normally nonadhesive to the other component of said heterofilament comprising modifying at least one component of said heterofilament by adding a plasticizer to said component in an amount up to 15 percent by weight of said component prior to extruding said component into said heterofilament configuration.
Claim 2
Dependent Claim
61 words
A process for improving adhesion between heterofilament components of polyester and polyamide, which components are normally nonadhesive to the other component of said heterofilament comprising modifying at least one component of said heterofilament by adding a plasticizer to said component in an amount up to 15 percent by weight of said component prior to extruding said component into said heterofilament configuration.
Claim 3
Dependent Claim
26 words
A process as claimed in claim 1 in which not more than 10% by weight of one or more plasticizers is added to any one component.
Claim 4
Dependent Claim
15 words
A process as claimed in claim 1 wherein the heterofilament is a polyester-polyamide side-by-side filament.
Claim 5
Dependent Claim
20 words
A process as claimed in claim 3 in which di-phenyl ether is added to at least one of the components.
Claim 6
Dependent Claim
21 words
A process as claimed in claim 3 in which m-phenylene N,N'-dibenzene sulphonamide is added to at least one of the components.
Claim 7
Dependent Claim
21 words
A process as claimed in claim 3 in which N-phenyl benzene sulphonamide is added to at least one of the components.
Claim 8
Dependent Claim
23 words
A process as claimed in claim 3 in which o- and p-N-ethyl toluene sulphonamide are added to at least one of the components.
Claim 9
Dependent Claim
21 words
A process as claimed in claim 3 in which p-N-cyclohexyl benzene sulphonamide is added to at least one of the components.
Claim 10
Dependent Claim
21 words
A process as claimed in claim 3 in which N-cyclohexyl p-toluene sulphonamide is added to at least one of the components.
Claim 11
Dependent Claim
17 words
A process as claimed in claim 3 in which p-nonyl phenol is added to the polyamide component.
Claim 12
Dependent Claim
16 words
A process as claimed in claim 3 in which melamine is added to the polyamide component.
Claim 13
Dependent Claim
17 words
A process as claimed in claim 3 in which dimethyl phthalate is added to the polyester component.
Claim 14
Dependent Claim
15 words
The process as claimed in claim 1 wherein the heterofilament is a polyester-polyamide sheath-core filament.
Claim 15
Dependent Claim
53 words
A heterofilament of at least two polymer components comprising one component of polyester or polyamide and a second component of a fiber-forming polymer normally nonadhesive to said polyester or polyamide at least one of said components having a plasticizer incorporated therein in an amount up to 15 percent by weight of said component.
Claim 16
Dependent Claim
53 words
A heterofilament of at least two polymer components comprising one component of polyester or polyamide and a second component of a fiber-forming polymer normally nonadhesive to said polyester or polyamide at least one of said components having a plasticizer incorporated therein in an amount up to 15 percent by weight of said component.
Claim 17
Dependent Claim
12 words
The heterofilament of claim 14 wherein the components are polyester and polyamide.
Claim 18
Dependent Claim
12 words
The heterofilament of claim 15 wherein the heterofilament is a side-by-side configuration.
Claim 19
Dependent Claim
12 words
The heterofilament of claim 15 wherein the heterofilament is a sheath-core configuration.
Claim 20
Dependent Claim
17 words
The heterofilament of claim 15 wherein diphenyl ether is the plasticizer added to one of the components.
References Cited (Backward Citations)
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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) | 1979-08-17 | 1980-02-16 | 1980-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-08-17 | 1984-02-16 | 1984-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-08-17 | 1988-02-16 | 1988-08-17 | $7700.00 | Window Closed / Lapsed |