Patent US3191257A successfully refreshed from Google Patents.
US4146674A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fibre filling of polyester fibres
Assignee: Bayer AG
•
Filing: 1977-02-14
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Granted: 1979-03-27
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Expires: 1997-02-14
Abstract
Abstract A fiber filling of polyester fibres with greatly improved serviceability properties comprising a combination of fiber properties, namely denier range, staple length and number of crimp arcs, a specific polysiloxane brightening and an antistatic agent.
Inventors
- 👤 Manfred Salamon
- 👤 Hans J. Hagebaum
- 👤 Herbert Pelousek
- 👤 Klaus-Jurgen Schreiber
- 👤 Robert Boeck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:40
CPC Classifications
D; D06; D06M; D06M15/00; D06M15/19; D06M15/37; D06M15/643; D06M15/65; D06M13/00; D06M13/10; D06M13/11; C; C10; C10M; C10M2201/00; C10M2201/02; C10M2217/00; C10M2217/04; C10M2217/042; C10M2217/043; C10M2229/00; C10M2229/04; C10M2229/041; C10N; C10N2040/00; C10N2040/46; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2904; Y10T428/2907; Y10T428/2909; Y10T428/2913; Y10T428/2922; Y10T428/2933; Y10T428/294; Y10T428/2958; Y10T428/2962; Y10T428/2964; Y10T428/2967; Y10T428/2969
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
129 words
A fibre filling of crimped polyester fibres, comprising the polyester fibres having a denier of from 3 to 20 dtex, a staple length of from 30 to 70 mm and a crimp arc count of from 22 to 30 per 100 mm and containing from 0.2 to 2% by weight, based on the weight of the fibres, of a preparation comprising the following components (A) to (C): (a) a mixture of (a) polydimethyl siloxane terminally blocked by OH groups, and (b) polymethyl hydrogen siloxane in a ratio by weight of a:b of about 26:17, (B) a reaction mixture of the epoxide: ##STR4## and hexamethylene diamine, and (C) a hardener of dioctyl tin maleate and butyl tin laurate in a ratio by weight of about 1:1, and an antistatic agent.
Claim 2
Dependent Claim
129 words
A fibre filling of crimped polyester fibres, comprising the polyester fibres having a denier of from 3 to 20 dtex, a staple length of from 30 to 70 mm and a crimp arc count of from 22 to 30 per 100 mm and containing from 0.2 to 2% by weight, based on the weight of the fibres, of a preparation comprising the following components (A) to (C): (a) a mixture of (a) polydimethyl siloxane terminally blocked by OH groups, and (b) polymethyl hydrogen siloxane in a ratio by weight of a:b of about 26:17, (B) a reaction mixture of the epoxide: ##STR4## and hexamethylene diamine, and (C) a hardener of dioctyl tin maleate and butyl tin laurate in a ratio by weight of about 1:1, and an antistatic agent.
Claim 3
Dependent Claim
34 words
The fibre filling as claimed in claim 1, wherein said polyester fibres contain from 0.1 to 0.6% by weight, based on the weight of the fibres, of ethoxylated 1,12-dodecane diol as the antistatic agent.
Claim 4
Dependent Claim
20 words
The fibre filling as claimed in claim 1, wherein said polyester fibres are fibres of a terephthalic acid cyclohexane-1,4-dimethanol polyester.
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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) | 1982-03-26 | 1982-09-25 | 1983-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-03-26 | 1986-09-25 | 1987-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-03-26 | 1990-09-25 | 1991-03-27 | $7700.00 | Window Closed / Lapsed |