GB1414652A - Synthetic polymer filaments - Google Patents
Synthetic polymer filamentsInfo
- Publication number
- GB1414652A GB1414652A GB2790675A GB2790675A GB1414652A GB 1414652 A GB1414652 A GB 1414652A GB 2790675 A GB2790675 A GB 2790675A GB 2790675 A GB2790675 A GB 2790675A GB 1414652 A GB1414652 A GB 1414652A
- Authority
- GB
- United Kingdom
- Prior art keywords
- filaments
- filament
- voids
- core
- acrylonitrile
- 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
-
- 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
- D01F6/02—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D01F6/18—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds from polymers of unsaturated nitriles, e.g. polyacrylonitrile, polyvinylidene cyanide
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/05—Filamentary, e.g. strands
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/07—Flat, e.g. panels
- B29C48/08—Flat, e.g. panels flexible, e.g. films
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/92—Measuring, controlling or regulating
-
- 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
- D01F6/28—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from copolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D01F6/38—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from copolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds comprising unsaturated nitriles as the major constituent
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/92514—Pressure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/92704—Temperature
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92819—Location or phase of control
- B29C2948/92857—Extrusion unit
- B29C2948/92876—Feeding, melting, plasticising or pumping zones, e.g. the melt itself
- B29C2948/92895—Barrel or housing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/395—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
- B29C48/40—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders using two or more parallel screws or at least two parallel non-intermeshing screws, e.g. twin screw extruders
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Artificial Filaments (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Multicomponent Fibers (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
- Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
Abstract
1414652 Acrylonitrile polymer filaments E I DU PONT DE NEMOURS & CO 16 Oct 1972 [14 Oct 1971] 27906/75 Divided out of 1414651 Heading B5B [Also in Division C3] Filaments of acrylonitrile polymers containing 80-100% by weight acrylonitrile units and 0-20% by weight of units of one or more comonomers have a sheath extending inward from the surface of the filament with a thickness of from 5 to 50% of the distance from the outer surface of the filament to the central axis of the filament, the sheath having a positive density gradient wherein the highest density is at or near the surface of the filament and having substantially no optical voids. The exemplified comonomer units are derived from one or more of methyl acrylate, sodium styrene sulphonate, styrene, ethylene, 2-methyl-5-vinylpyridine and vinyl acetate. The filaments are produced by extruding a composition containing the acrylonitrile polymer and water, wherein the water is present, completely or partially, in the form of a hydrate with the nitrile groups of the polymer, through an orifice at a temperature of from 25 C. below to 10 C. above the temperature of hydration of the acrylonitrile polymer). (The hydrated polymer compositions are described and claimed in Specification 1,414,651. The extruded filaments comprise a core containing voids having lateral diameters of from 0À05 to 1 micron in a concentration of between 10<SP>5</SP> and 10<SP>7</SP>/mm.<SP>2</SP> of core cross-section. When the filaments are drawn, e.g. to 200% or more of their as-spun length, the sheath develops discrete, longitudinal striations on the outer surface or skin and the voids in the core are elongated and reduced in diameter, the drawn filaments thereby developing a positive form birefringence. If the filaments are heated, the core voids can be reduced to less than 0À05 micron in diameter and the birefringence disappears.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US18920271A | 1971-10-14 | 1971-10-14 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1414652A true GB1414652A (en) | 1975-11-19 |
Family
ID=22696359
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB4764672A Expired GB1414651A (en) | 1971-10-14 | 1972-10-16 | Acrylonitrile polymer compositions |
GB2790675A Expired GB1414652A (en) | 1971-10-14 | 1972-10-16 | Synthetic polymer filaments |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB4764672A Expired GB1414651A (en) | 1971-10-14 | 1972-10-16 | Acrylonitrile polymer compositions |
Country Status (21)
Country | Link |
---|---|
JP (1) | JPS5442023B2 (en) |
AR (1) | AR198797A1 (en) |
AU (1) | AU4775772A (en) |
BE (1) | BE790107A (en) |
BR (1) | BR7207167D0 (en) |
CA (1) | CA1034328A (en) |
CH (1) | CH540306A (en) |
DE (1) | DE2248244B2 (en) |
ES (1) | ES407614A1 (en) |
FR (1) | FR2156337B1 (en) |
GB (2) | GB1414651A (en) |
IE (2) | IE36757B1 (en) |
IL (1) | IL40560A0 (en) |
IN (1) | IN139404B (en) |
LU (1) | LU66301A1 (en) |
NL (1) | NL164910C (en) |
OA (1) | OA04203A (en) |
PL (1) | PL74841B1 (en) |
RO (1) | RO86220B (en) |
TR (1) | TR17873A (en) |
ZA (1) | ZA727281B (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
IL43990A (en) * | 1973-02-05 | 1976-08-31 | American Cyanamid Co | Method of spining fiber using a fusion-melt polymer composition |
US3873508A (en) * | 1973-12-27 | 1975-03-25 | Du Pont | Preparation of acrylonitrile polymer |
US4238442A (en) * | 1978-12-29 | 1980-12-09 | E. I. Du Pont De Nemours And Company | Process for melt spinning acrylonitrile polymer hydrates |
DE19959532C1 (en) * | 1999-12-10 | 2001-10-04 | Seitz Schenk Filtersystems Gmb | Method and device for the production of filtration-active fibers |
GB2370248A (en) * | 1999-12-10 | 2002-06-26 | Seitzschenk Filtersystems Gmbh | Production of filtration-active fibres |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2585499A (en) * | 1948-07-29 | 1952-02-12 | Du Pont | Production of shaped articles from acrylonitrile polymers |
US2585444A (en) * | 1948-07-29 | 1952-02-12 | Du Pont | Preparation of shaped articles from acrylonitrile polymers |
US3402231A (en) * | 1964-05-21 | 1968-09-17 | Monsanto Co | Process for preparing synthetic fibers for paper products |
US3388202A (en) * | 1965-09-27 | 1968-06-11 | Monsanto Co | Method for melting acrylonitrile polymers and copolymers |
US3354856A (en) * | 1966-03-16 | 1967-11-28 | Joseph R Annibale | Submerged object lifting device |
US3896204A (en) * | 1972-10-02 | 1975-07-22 | Du Pont | Melt-extrusion of acrylonitrile polymers into filaments |
US3873508A (en) * | 1973-12-27 | 1975-03-25 | Du Pont | Preparation of acrylonitrile polymer |
-
0
- BE BE790107D patent/BE790107A/en not_active IP Right Cessation
-
1972
- 1972-10-02 DE DE2248244A patent/DE2248244B2/en not_active Ceased
- 1972-10-06 CA CA153,494A patent/CA1034328A/en not_active Expired
- 1972-10-12 IL IL40560A patent/IL40560A0/en unknown
- 1972-10-12 IE IE1387/72A patent/IE36757B1/en unknown
- 1972-10-12 ZA ZA727281A patent/ZA727281B/en unknown
- 1972-10-12 IN IN1649/72A patent/IN139404B/en unknown
- 1972-10-12 IE IE2797/75A patent/IE36758B1/en unknown
- 1972-10-12 PL PL15823472A patent/PL74841B1/en unknown
- 1972-10-13 BR BR007167/72A patent/BR7207167D0/en unknown
- 1972-10-13 FR FR7236336A patent/FR2156337B1/fr not_active Expired
- 1972-10-13 LU LU66301A patent/LU66301A1/xx unknown
- 1972-10-13 CH CH1498072A patent/CH540306A/en not_active IP Right Cessation
- 1972-10-13 NL NL7213907.A patent/NL164910C/en not_active IP Right Cessation
- 1972-10-13 TR TR17873A patent/TR17873A/en unknown
- 1972-10-13 ES ES407614A patent/ES407614A1/en not_active Expired
- 1972-10-13 AR AR244607A patent/AR198797A1/en active
- 1972-10-13 OA OA54724A patent/OA04203A/en unknown
- 1972-10-13 AU AU47757/72A patent/AU4775772A/en not_active Expired
- 1972-10-14 JP JP10238172A patent/JPS5442023B2/ja not_active Expired
- 1972-10-14 RO RO72514A patent/RO86220B/en unknown
- 1972-10-16 GB GB4764672A patent/GB1414651A/en not_active Expired
- 1972-10-16 GB GB2790675A patent/GB1414652A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
AR198797A1 (en) | 1974-07-24 |
NL164910C (en) | 1981-02-16 |
FR2156337B1 (en) | 1977-04-01 |
PL74841B1 (en) | 1974-12-31 |
NL164910B (en) | 1980-09-15 |
JPS4849839A (en) | 1973-07-13 |
CH540306A (en) | 1973-08-15 |
IN139404B (en) | 1976-06-12 |
IE36757L (en) | 1973-04-14 |
DE2248244B2 (en) | 1978-12-14 |
JPS5442023B2 (en) | 1979-12-12 |
TR17873A (en) | 1976-09-01 |
ES407614A1 (en) | 1975-10-01 |
IE36757B1 (en) | 1977-02-16 |
RO86220A (en) | 1985-03-15 |
DE2248244A1 (en) | 1973-04-19 |
OA04203A (en) | 1979-12-31 |
BE790107A (en) | 1973-04-13 |
CA1034328A (en) | 1978-07-11 |
NL7213907A (en) | 1973-04-17 |
IE36758B1 (en) | 1977-02-16 |
IL40560A0 (en) | 1972-12-29 |
ZA727281B (en) | 1973-08-29 |
LU66301A1 (en) | 1973-01-23 |
RO86220B (en) | 1985-03-31 |
BR7207167D0 (en) | 1973-07-26 |
FR2156337A1 (en) | 1973-05-25 |
AU4775772A (en) | 1974-04-26 |
GB1414651A (en) | 1975-11-19 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed [section 19, patents act 1949] | ||
PE20 | Patent expired after termination of 20 years |