US4130602A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Block copolymer of poly(dioxa-amide) and polyamide
Assignee: Sun Ventures Inc
•
Filing: 1977-02-16
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Granted: 1978-12-19
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Expires: 1997-02-16
Abstract
Abstract Novel block copolymer formed by melt blending a melt spinnable polyamide such as nylon-6 and a poly(dioxa-amide) such as poly(4,7-dioxadecamethylene adipamide) which is also known as N-30203-6 is disclosed. Said copolymer has utility as a fiber. The fiber of disclosed copolymer, for example, of nylon-6 and said poly(dioxa-amide) has moisture absorption characteristics similar to that of cotton. Resulting copolymer is also known as N-30203-6//6. Furthermore, the resulting fiber still maintains the other desirable properties of the major constituent, for example, nylon-6.
Inventors
- 👤 Robert M. Thompson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-10 02:28
CPC Classifications
C; C08; C08G; C08G69/00
Claims Analysis
Total Claims: 48
Claim 1
Independent Claim
96 words
A block copolymer of poly(dioxa-amide) and polyamide having a molecular weight of about 5000-100,000 and the following repeating structural formula: ##STR11## wherein R 1 , R 2 and R 3 are selected from the group consisting of H, C 1 -C 10 alkyls and C 3 -C 10 isoalkyls; R 4 is selected from the group consisting of C 1 -C 10 alkylenes and C 3 -C 10 isoalkylenes; R 5 is selected from the group consisting of C 0 -C 10 alkylenes and C 3 -C 10 isoalkylenes; and y = 4-200, z = 4-200.
Claim 2
Dependent Claim
96 words
A block copolymer of poly(dioxa-amide) and polyamide having a molecular weight of about 5000-100,000 and the following repeating structural formula: ##STR11## wherein R 1 , R 2 and R 3 are selected from the group consisting of H, C 1 -C 10 alkyls and C 3 -C 10 isoalkyls; R 4 is selected from the group consisting of C 1 -C 10 alkylenes and C 3 -C 10 isoalkylenes; R 5 is selected from the group consisting of C 0 -C 10 alkylenes and C 3 -C 10 isoalkylenes; and y = 4-200, z = 4-200.
Claim 3
Dependent Claim
11 words
A copolymer according to claim 1 wherein the copolymer is hydrophilic.
Claim 4
Dependent Claim
24 words
A copolymer according to claim 2 wherein the copolymer has a percent moisture regain of at least 4% at a relative humidity of 65%.
Claim 5
Dependent Claim
21 words
A copolymer according to claim 1 wherein the bivalent radical polyamide is selected from the group consisting of nylon-6 and PACM-12.
Claim 6
Dependent Claim
11 words
A copolymer according to claim 4 wherein the copolymer is hydrophilic.
Claim 7
Dependent Claim
24 words
A copolymer according to claim 5 wherein the copolymer has a percent moisture regain of at least 4% at a relative humidity of 65%.
Claim 8
Dependent Claim
29 words
A copolymer according to claim 6 wherein R 1 , R 2 and R 3 are H, and R 4 and R 5 are C 1 -C 10 alkylenes.
Claim 9
Dependent Claim
22 words
A copolymer according to claim 7 wherein R 4 is a C 2 alkylene and R 5 is a C 4 alkylene.
Claim 10
Dependent Claim
10 words
A fiber obtained by spinning the copolymer of claim 1.
Claim 11
Dependent Claim
10 words
A fiber obtained by spinning the copolymer of claim 7.
Claim 12
Dependent Claim
10 words
A fiber obtained by spinning the copolymer of claim 8.
Claim 13
Dependent Claim
11 words
A fiber obtained by melt spinning the copolymer of claim 1.
Claim 14
Dependent Claim
11 words
A fiber obtained by melt spinning the copolymer of claim 7.
Claim 15
Dependent Claim
11 words
A fiber obtained by melt spinning the copolymer of claim 8.
Claim 16
Dependent Claim
11 words
A monofilament obtained by extrusion of the copolymer of claim 1.
Claim 17
Dependent Claim
11 words
A monofilament obtained by extrusion of the copolymer of claim 7.
Claim 18
Dependent Claim
11 words
A monofilament obtained by extrusion of the copolymer of claim 8.
Claim 19
Dependent Claim
12 words
A yarn obtained by twisting fibers of the copolymer of claim 1.
Claim 20
Dependent Claim
12 words
A yarn obtained by twisting fibers of the copolymer of claim 7.
Claim 21
Dependent Claim
12 words
A yarn obtained by twisting fibers of the copolymer of claim 8.
Claim 22
Dependent Claim
12 words
A fabric obtained by weaving yarn of the copolymer of claim 1.
Claim 23
Dependent Claim
12 words
A fabric obtained by weaving yarn of the copolymer of claim 7.
Claim 24
Dependent Claim
12 words
A fabric obtained by weaving yarn of the copolymer of claim 8.
Claim 25
Dependent Claim
12 words
A fabric obtained by knitting yarn of the copolymer of claim 1.
Claim 26
Dependent Claim
12 words
A fabric obtained by knitting yarn of the copolymer of claim 7.
Claim 27
Dependent Claim
12 words
A fabric obtained by knitting yarn of the copolymer of claim 8.
Claim 28
Dependent Claim
12 words
A fabric obtained by knitting monofilament of the copolymer of claim 1.
Claim 29
Dependent Claim
12 words
A fabric obtained by knitting monofilament of the copolymer of claim 7.
Claim 30
Dependent Claim
12 words
A fabric obtained by knitting monofilament of the copolymer of claim 8.
Claim 31
Dependent Claim
11 words
A nonwoven fabric obtained by laminating the copolymer of claim 1.
Claim 32
Dependent Claim
11 words
A nonwoven fabric obtained by laminating the copolymer of claim 7.
Claim 33
Dependent Claim
11 words
A nonwoven fabric obtained by laminating the copolymer of claim 8.
Claim 34
Dependent Claim
8 words
A fiber comprising the copolymer of claim 1.
Claim 35
Dependent Claim
8 words
A fiber comprising the copolymer of claim 7.
Claim 36
Dependent Claim
8 words
A fiber comprising the copolymer of claim 8.
Claim 37
Dependent Claim
8 words
A monofilament comprising the copolymer of claim 1.
Claim 38
Dependent Claim
8 words
A monofilament comprising the copolymer of claim 7.
Claim 39
Dependent Claim
8 words
A monofilament comprising the copolymer of claim 8.
Claim 40
Dependent Claim
8 words
A yarn comprising the copolymer of claim 1.
Claim 41
Dependent Claim
8 words
A yarn comprising the copolymer of claim 7.
Claim 42
Dependent Claim
8 words
A yarn comprising the copolymer of claim 8.
Claim 43
Dependent Claim
8 words
A fabric comprising the copolymer of claim 1.
Claim 44
Dependent Claim
8 words
A fabric comprising the copolymer of claim 7.
Claim 45
Dependent Claim
8 words
A fabric comprising the copolymer of claim 8.
Claim 46
Dependent Claim
9 words
A nonwoven fabric comprising the copolymer of claim 1.
Claim 47
Dependent Claim
9 words
A nonwoven fabric comprising the copolymer of claim 7.
Claim 48
Dependent Claim
9 words
A nonwoven fabric comprising the copolymer of claim 8.
References Cited (Backward Citations)
US2339237A
Cited
GB562370A
Cited
GB574713A
Cited
GB615954A
Cited
GB1030344A
Cited
US3397107A
Cited
US3683047A
Cited
GB1304865A
Cited
BE822164A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-12-18 | 1982-06-19 | 1982-12-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-12-18 | 1986-06-19 | 1986-12-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-12-18 | 1990-06-19 | 1990-12-19 | $7700.00 | Window Closed / Lapsed |