US3875141A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Regenerated cellulose filaments
Assignee: Chimiotex SA
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Filing: 1968-08-26
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Granted: 1975-04-01
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Expires: 1988-08-26
Abstract
Abstract Novel alkali resistant cellulose regenerated filament having a new fibrillary arrangement different from that of other alkali resistant cellulose regenerated filaments, characterized by a crossed position of the fibrils constituting the filament, having an orientation angle of about 35* to about 47* and an organization degree of from about 0.42 to about 0.48; in addition this invention related to an alkali resistant regenerated cellulose filament having a conditioned tenacity of about 3.5 to 7 g/den., a conditioned elongation of about 30-14 percent, a wet tenacity of about 2.7-6 g/den. a wet elongation of about 40-16 percent, a work product in the conditioned state of about 70 to about 115 and a work product in the wet state of about 70 to about 115; further, this invention relates to alkali resistant regenerated cellulose filaments having a loop tenacity of about 1.2 to about 2.1 g/den., a water filtration number of about 3 to about 10 and a dyeing index of about 1.15. In addition this invention relates to the corresponding acetylated cellulose filaments.
Inventors
- 👤 Nicolas B Drisch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:44
CPC Classifications
D; D01; D01F; D01F2/00; D01F2/06; D01F2/08
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
104 words
AN ALKALI RESISTANT REGENERATED CELLULOSE FILAMENT, HAVE AN ELONGATION IN THE WET STATE LOWER THAN 8 PERCENT UNDER A LOAD OF 0.5 G/DEN. AFTER TREATMENT WITH A 5% CAUSTIC SODA SOLUTION AT 20*C. FOR 15 MINUTES, SAID FILAMENT HAVING AN ORIENTATION ANGEL OF ABOUT 35* TO ABOUT 47* AND AN ORGANIZATION DEGREE OF ABOUT 35* TO ABOUT 0.48 AND FURTHER HAVING PRIOR TO ANY TREATMENT WITH AN ALKALINE SWELLING AGENT A CONDITIONED TENACITY OF ABOUT 3.5 - 7 G/DEN., A WET TENACITY OF ABOUT 2.7 - 6 G/DEN. AND A WORK PRODUCT BOTH IN THE CONDITIONED AND WET STATE OF ABOUT 70 - 115.
Claim 2
Dependent Claim
104 words
AN ALKALI RESISTANT REGENERATED CELLULOSE FILAMENT, HAVE AN ELONGATION IN THE WET STATE LOWER THAN 8 PERCENT UNDER A LOAD OF 0.5 G/DEN. AFTER TREATMENT WITH A 5% CAUSTIC SODA SOLUTION AT 20*C. FOR 15 MINUTES, SAID FILAMENT HAVING AN ORIENTATION ANGEL OF ABOUT 35* TO ABOUT 47* AND AN ORGANIZATION DEGREE OF ABOUT 35* TO ABOUT 0.48 AND FURTHER HAVING PRIOR TO ANY TREATMENT WITH AN ALKALINE SWELLING AGENT A CONDITIONED TENACITY OF ABOUT 3.5 - 7 G/DEN., A WET TENACITY OF ABOUT 2.7 - 6 G/DEN. AND A WORK PRODUCT BOTH IN THE CONDITIONED AND WET STATE OF ABOUT 70 - 115.
Claim 3
Dependent Claim
10 words
An alkali resistant regenerated cellulose filament having the following characteristics:
Claim 4
Dependent Claim
10 words
An alkali resistant regenerated cellulose filament having the following characteristics:
Claim 5
Dependent Claim
9 words
a conditioned elongation of about 14 - 30 percent;
Claim 6
Dependent Claim
9 words
a conditioned elongation of about 14 - 30 percent;
Claim 7
Dependent Claim
9 words
a wet elongation of about 16 - 40 percent;
Claim 8
Dependent Claim
9 words
a wet elongation of about 16 - 40 percent;
Claim 9
Dependent Claim
27 words
The alkali resistant regenerated cellulose filament of claim 2 further characterized in being substantially non-fibrillatable and having a water filtration number of about 3 to about 10.
Claim 10
Dependent Claim
53 words
The alkali resistant regenerated cellulose filament of claim 2 having prior to any treatment with an alkaline swelling agent a conditioned tenacity of about 3.5 - 7 g/den., a wet tenacity of about 2.7 - 6 g/den. and a work product both in the conditioned and wet state of about 70 - 115.
Claim 11
Dependent Claim
9 words
an orientation angle of about 35* to about 47*;
Claim 12
Dependent Claim
9 words
an orientation angle of about 35* to about 47*;
Claim 13
Dependent Claim
8 words
an organization degree of 0.42 to about 0.48;
Claim 14
Dependent Claim
8 words
an organization degree of 0.42 to about 0.48;
Claim 15
Dependent Claim
27 words
The alkali resistant regenerated cellulose filament of claim 2 further characterized in being substantially non-fibrillatable and having a water filtration number of about 3 to about 10.
Claim 16
Dependent Claim
19 words
a conditioned loop tenacity of about 1.2 - 2.1 g/den. prior to any treatment with an alkaline swelling agent;
Claim 17
Dependent Claim
19 words
a conditioned loop tenacity of about 1.2 - 2.1 g/den. prior to any treatment with an alkaline swelling agent;
Claim 18
Dependent Claim
18 words
a conditioned tenacity of about 3.5 - 7 g/den. prior to any treatment with an alkaline swelling agent;
Claim 19
Dependent Claim
18 words
a conditioned tenacity of about 3.5 - 7 g/den. prior to any treatment with an alkaline swelling agent;
Claim 20
Dependent Claim
10 words
a wet tenacity of about 2.7 - 6 g/den.; and
Claim 21
Dependent Claim
10 words
a wet tenacity of about 2.7 - 6 g/den.; and
Claim 22
Dependent Claim
15 words
a work product both in the conditioned and wet state of about 70 - 115.
Claim 23
Dependent Claim
15 words
a work product both in the conditioned and wet state of about 70 - 115.
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) | 1978-03-31 | 1978-09-30 | 1979-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-31 | 1982-09-30 | 1983-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-31 | 1986-09-30 | 1987-04-01 | $7700.00 | Window Closed / Lapsed |