Patent US3915912A successfully refreshed from Google Patents.
US3915912A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Modified polyamide compositions containing a polyethylene glycol derivative and a fatty acid or fatty acid salt
Assignee: Asahi Kasei Corp
•
Filing: 1973-05-01
•
Granted: 1975-10-28
•
Expires: 1993-05-01
Abstract
Abstract Modified polyamide fibers containing a polyethylene glycol or its derivative can be produced without accompaniment of inter-filamentary or inter-yarn adhesion which has been a drawback at the time of spinning of said type of polyamide fibers, by using as a raw material of melt spinning a polyamide which is obtained by incorporating in said polyamide one or more of long chain fatty acids having carbon atoms of 11 or more or salts formed between said fatty acids and metals of Ist, IInd or IIIrd group of the Periodical Table, long chain alcohols having carbon atoms of 11 or more, esters of said long chain alcohols, higher alkyl amines having carbon atoms of 11 or more, or higher alkanoyl amides having carbon atoms of 11 or more.
Inventors
- 👤 Tatsuo Ishicawa
- 👤 Teruomi Wakabayashi
- 👤 Mutsuo Matsuki
- 👤 Tetsuhiro Kusunose
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 00:41
CPC Classifications
C; C08; C08L; C08L77/00; C08K; C08K5/00; C08K5/0008; C08K5/0075; C08K5/04; C08K5/05; C08K5/09; C08K5/10; C08K5/11; C08K5/16; C08K5/17; C08K5/20; C08L71/00; Y; Y10; Y10S; Y10S525/00; Y10S525/926; Y10S525/927
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
127 words
A MODIFIED HOMOPOLYAMIDE COMPOSITION SUITABLE FOR MELT SPINNING FIBERS WITHOUT CAUSING INTER-FILAMENTARY ADHESION, SAID COMPOSITION CONSISTING ESSENTIALLY OF A HOMOPOLYAMIDE INTIMATELY COMBINED WITH (A) 0.5 - 10% BY WEIGHT BASED UPON THE WEIGHT OF SAID HOMOPOLYAMIDE OF A MEMBER SELECTED FROM THE GROUP CONSISTING OF (1) A POLYETHYLENE GLYCOL,(2) A POLYETHYLENE GLYCOL CHEMICALLY BONDED TO A POLYAMIDE THROUGH ESTER LINKAGES, AMIDE LINKAGES OR URETHANE LINKAGES, AND (3) A POLYMER OBTAINED BY ADDITION OF (1) OR (2) TO A COMPOUND HAVING AN ACTIVE HYDROGEN, AND (B) 0.01 - 2% BY WEIGHT BASED UPON THE WEIGHT OF SAID HOMOPOLYAMIDE OF A SECOND COMPONENT, SAID COMPONENT HAVING A BOILING POINT OF AT LEAST 200*C AND BEING A LONG CHAIN FATTY ACID OR SALT THEREOF HAVING 11 CARBON ATOMS OR MORE.
Claim 2
Dependent Claim
127 words
A MODIFIED HOMOPOLYAMIDE COMPOSITION SUITABLE FOR MELT SPINNING FIBERS WITHOUT CAUSING INTER-FILAMENTARY ADHESION, SAID COMPOSITION CONSISTING ESSENTIALLY OF A HOMOPOLYAMIDE INTIMATELY COMBINED WITH (A) 0.5 - 10% BY WEIGHT BASED UPON THE WEIGHT OF SAID HOMOPOLYAMIDE OF A MEMBER SELECTED FROM THE GROUP CONSISTING OF (1) A POLYETHYLENE GLYCOL,(2) A POLYETHYLENE GLYCOL CHEMICALLY BONDED TO A POLYAMIDE THROUGH ESTER LINKAGES, AMIDE LINKAGES OR URETHANE LINKAGES, AND (3) A POLYMER OBTAINED BY ADDITION OF (1) OR (2) TO A COMPOUND HAVING AN ACTIVE HYDROGEN, AND (B) 0.01 - 2% BY WEIGHT BASED UPON THE WEIGHT OF SAID HOMOPOLYAMIDE OF A SECOND COMPONENT, SAID COMPONENT HAVING A BOILING POINT OF AT LEAST 200*C AND BEING A LONG CHAIN FATTY ACID OR SALT THEREOF HAVING 11 CARBON ATOMS OR MORE.
Claim 3
Dependent Claim
54 words
The composition of claim 1 wherein the long chain fatty acid is selected from the group consisting of lauric acid, myristic acid, palmitic acid, stearic acid, arachic acid, behenic acid, palmitolic acid, oleic acid, linoleic acid, linolenic acid and salts thereof formed with metals of Groups I, II and III of the Periodic Table.
Claim 4
Dependent Claim
34 words
In the method of producing a modified homopolyamide by subjecting a polyamide blend to melt spinning, the improvement comprising melt spinning the said modified homopolyamide composition of claim 1, whereby inter-filamentary adhesion is obviated.
References Cited (Backward Citations)
US3156750A
Cited
US3342762A
Cited
US3329633A
Cited
US3470139A
Cited
US3554980A
Cited
US3516956A
Cited
US3632666A
Cited
US3669917A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-10-27 | 1979-04-28 | 1979-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-10-27 | 1983-04-28 | 1983-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-10-27 | 1987-04-28 | 1987-10-28 | $7700.00 | Window Closed / Lapsed |