GB1150860A - Polyamide Filaments and process for making them - Google Patents
Polyamide Filaments and process for making themInfo
- Publication number
- GB1150860A GB1150860A GB5884767A GB5884767A GB1150860A GB 1150860 A GB1150860 A GB 1150860A GB 5884767 A GB5884767 A GB 5884767A GB 5884767 A GB5884767 A GB 5884767A GB 1150860 A GB1150860 A GB 1150860A
- Authority
- GB
- United Kingdom
- Prior art keywords
- filaments
- polymer
- trans
- temperature
- weight
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G69/00—Macromolecular compounds obtained by reactions forming a carboxylic amide link in the main chain of the macromolecule
- C08G69/02—Polyamides derived from amino-carboxylic acids or from polyamines and polycarboxylic acids
- C08G69/26—Polyamides derived from amino-carboxylic acids or from polyamines and polycarboxylic acids derived from polyamines and polycarboxylic acids
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C9/00—Reinforcements or ply arrangement of pneumatic tyres
- B60C9/0042—Reinforcements made of synthetic materials
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
- D01F6/78—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from copolycondensation products
- D01F6/80—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from copolycondensation products from copolyamides
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Mechanical Engineering (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Textile Engineering (AREA)
- Artificial Filaments (AREA)
Abstract
1,150,860. Polyamide filaments and process for making them. E. I. DU PONT DE NEMOURS & CO. 28 Dec., 1967, No. 58847/67. Heading B5B. Crystalline oriented filaments of a polyamide consisting primarily of the following recurring structural units wherein n is 9-14, preferably 10, at least 70% by weight of the diamino constituent of the repeating units being of a trans-trans stereoisomeric configuration, and the filaments having a transverse crystal spacing of 4À3 to 4À7Š, as determined from the strongest equatorial reflections in a Bragg X-ray diffraction pattern may be produced by drawing melt spun filaments of the polymer while they are at a temperature t (‹C.) exceeding 290+S-15 m+20 (- 1)<SP>m</SP>, where m is the total number of carbon atoms in the aliphatic diacid and S is the trans-trans stereoisomer content of the diamino constituent of the repeating unit in per cent by weight, said temperature being below the softening point of the polymer and preferably not above the viscous flow drawing temperature. The drawing is preferably carried out in two stages, the temperature being higher in the second stage. The second stage drawing is normally part of a drawing process wherein the filaments attain an orientation equivalent to that obtained with at least a 3À5: 1 draw ratio. The melt spinning of the filaments is preferably effected into a heated inert gas such as nitrogen or steam to prevent excessive spinning orientation and render the filaments more highly drawable subsequently. The molecular weight of the polymer is preferably at least 18,000 and more preferably 25,000 to 35,000. The polymer is a polyamide formed by the polycondensation of bis-(4-aminocyclohexyl)- methane and aliphatic diacids of 11 to 16 carbon atoms. Copolymer components, whether the foreign component replaces the amine, the acid or both, should preferably be kept to no more than about 10% by weight (calculated as the weight per 100 grams of polymer of where X refers to the acid entity in the foreign component, Y refers to the amine entity and Z refers to an amino acid component). In an example, a polymer prepared by polycondensation of bis-(4-aminocyclohexyl) methane of 70% trans-trans stereoisomer content and dodecandioic acid, said polymer having a relative viscosity of 115 (measured in 98% formic acid) is melt spun at 295‹ C. and the yarn thereby formed is drawn at a draw ratio of 3À56 over a snubbing pin maintained at 100‹ C. The yarn then travels in a helical wrap around a pipe with a temperature gradient of 150‹ to 190‹ C. (increasing in the direction of yarn travel) to a total draw ratio of 4À0. The yarn is finally further drawn at a draw ratio of 1-49 over a hot pin at 150‹ C. and a 2-zone hot-plate heated to 200‹ and 210‹ C.
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB5884767A GB1150860A (en) | 1967-12-28 | 1967-12-28 | Polyamide Filaments and process for making them |
DE1967P0043729 DE1669518B2 (en) | 1967-12-28 | 1967-12-29 | CRYSTALLINE, ORIENTED THREAD MADE OF A POLYAMIDE OF HIGH MOLECULAR WEIGHT AND A PROCESS FOR MANUFACTURING THE SAME |
FR134313A FR1566214A (en) | 1967-12-28 | 1967-12-29 | |
BE708756A BE708756A (en) | 1967-12-28 | 1967-12-29 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB5884767A GB1150860A (en) | 1967-12-28 | 1967-12-28 | Polyamide Filaments and process for making them |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1150860A true GB1150860A (en) | 1969-05-07 |
Family
ID=10482536
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB5884767A Expired GB1150860A (en) | 1967-12-28 | 1967-12-28 | Polyamide Filaments and process for making them |
Country Status (4)
Country | Link |
---|---|
BE (1) | BE708756A (en) |
DE (1) | DE1669518B2 (en) |
FR (1) | FR1566214A (en) |
GB (1) | GB1150860A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2715860A1 (en) * | 1976-04-15 | 1977-10-20 | Phillips Petroleum Co | METHOD FOR MANUFACTURING POLYAMIDES |
US20210381135A1 (en) * | 2018-10-10 | 2021-12-09 | Evonik Operations Gmbh | Melt-drawn polyamide filaments |
WO2022238344A1 (en) | 2021-05-11 | 2022-11-17 | Solvay Specialty Polymers Usa, Llc | Filament containing polyamide (pa) polymer and its use for additive manufacturing |
WO2023183553A1 (en) * | 2022-03-25 | 2023-09-28 | Solvay Specialty Polymers Usa, Llc | Filament containing a biobased polyamide (pa) polymer and its use for additive manufacturing |
-
1967
- 1967-12-28 GB GB5884767A patent/GB1150860A/en not_active Expired
- 1967-12-29 DE DE1967P0043729 patent/DE1669518B2/en active Pending
- 1967-12-29 FR FR134313A patent/FR1566214A/fr not_active Expired
- 1967-12-29 BE BE708756A patent/BE708756A/xx unknown
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2715860A1 (en) * | 1976-04-15 | 1977-10-20 | Phillips Petroleum Co | METHOD FOR MANUFACTURING POLYAMIDES |
US20210381135A1 (en) * | 2018-10-10 | 2021-12-09 | Evonik Operations Gmbh | Melt-drawn polyamide filaments |
WO2022238344A1 (en) | 2021-05-11 | 2022-11-17 | Solvay Specialty Polymers Usa, Llc | Filament containing polyamide (pa) polymer and its use for additive manufacturing |
WO2023183553A1 (en) * | 2022-03-25 | 2023-09-28 | Solvay Specialty Polymers Usa, Llc | Filament containing a biobased polyamide (pa) polymer and its use for additive manufacturing |
WO2023180534A1 (en) | 2022-03-25 | 2023-09-28 | Solvay Specialty Polymers Usa, Llc | Filament containing polyamide (pa) polymer and its use for additive manufacturing |
Also Published As
Publication number | Publication date |
---|---|
DE1669518B2 (en) | 1973-05-30 |
DE1669518A1 (en) | 1971-12-23 |
BE708756A (en) | 1968-05-02 |
FR1566214A (en) | 1969-05-09 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PLNP | Patent lapsed through nonpayment of renewal fees |