GB2152061A - Melt spinning thermoplastic polymers - Google Patents
Melt spinning thermoplastic polymers Download PDFInfo
- Publication number
- GB2152061A GB2152061A GB08431813A GB8431813A GB2152061A GB 2152061 A GB2152061 A GB 2152061A GB 08431813 A GB08431813 A GB 08431813A GB 8431813 A GB8431813 A GB 8431813A GB 2152061 A GB2152061 A GB 2152061A
- Authority
- GB
- United Kingdom
- Prior art keywords
- additive
- extrusion
- polymer
- stearate
- thermoplastic
- 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.)
- Withdrawn
Links
- 229920001169 thermoplastic Polymers 0.000 title claims abstract description 15
- 238000002074 melt spinning Methods 0.000 title description 3
- 239000000654 additive Substances 0.000 claims abstract description 40
- 230000000996 additive effect Effects 0.000 claims abstract description 33
- 238000000034 method Methods 0.000 claims abstract description 26
- 229920000642 polymer Polymers 0.000 claims abstract description 19
- 238000001125 extrusion Methods 0.000 claims abstract description 14
- 239000000835 fiber Substances 0.000 claims abstract description 12
- 238000009987 spinning Methods 0.000 claims abstract description 10
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims abstract description 7
- 229920002994 synthetic fiber Polymers 0.000 claims abstract description 6
- 239000012209 synthetic fiber Substances 0.000 claims abstract description 6
- 238000001035 drying Methods 0.000 claims description 6
- GWFGDXZQZYMSMJ-UHFFFAOYSA-N Octadecansaeure-heptadecylester Natural products CCCCCCCCCCCCCCCCCOC(=O)CCCCCCCCCCCCCCCCC GWFGDXZQZYMSMJ-UHFFFAOYSA-N 0.000 claims description 5
- NKBWPOSQERPBFI-UHFFFAOYSA-N octadecyl octadecanoate Chemical group CCCCCCCCCCCCCCCCCCOC(=O)CCCCCCCCCCCCCCCCC NKBWPOSQERPBFI-UHFFFAOYSA-N 0.000 claims description 5
- 229920002292 Nylon 6 Polymers 0.000 claims description 4
- CJZGTCYPCWQAJB-UHFFFAOYSA-L calcium stearate Chemical group [Ca+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O CJZGTCYPCWQAJB-UHFFFAOYSA-L 0.000 claims description 3
- 125000003696 stearoyl group Chemical group O=C([*])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 claims description 3
- 125000002877 alkyl aryl group Chemical group 0.000 claims description 2
- 125000000217 alkyl group Chemical group 0.000 claims description 2
- 125000003118 aryl group Chemical group 0.000 claims description 2
- 150000001875 compounds Chemical class 0.000 claims description 2
- 229920000139 polyethylene terephthalate Polymers 0.000 claims description 2
- 239000005020 polyethylene terephthalate Substances 0.000 claims description 2
- 125000004079 stearyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 claims description 2
- 238000011144 upstream manufacturing Methods 0.000 claims 1
- 239000000463 material Substances 0.000 description 16
- 230000006399 behavior Effects 0.000 description 10
- 230000008569 process Effects 0.000 description 7
- 230000001788 irregular Effects 0.000 description 6
- 239000008187 granular material Substances 0.000 description 5
- 238000002844 melting Methods 0.000 description 5
- 230000008018 melting Effects 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 230000008901 benefit Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 229910052757 nitrogen Inorganic materials 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 239000004753 textile Substances 0.000 description 4
- 239000004416 thermosoftening plastic Substances 0.000 description 4
- 239000000155 melt Substances 0.000 description 3
- 239000012815 thermoplastic material Substances 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- DEXFNLNNUZKHNO-UHFFFAOYSA-N 6-[3-[4-[2-(2,3-dihydro-1H-inden-2-ylamino)pyrimidin-5-yl]piperidin-1-yl]-3-oxopropyl]-3H-1,3-benzoxazol-2-one Chemical compound C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)C1CCN(CC1)C(CCC1=CC2=C(NC(O2)=O)C=C1)=O DEXFNLNNUZKHNO-UHFFFAOYSA-N 0.000 description 1
- 206010000117 Abnormal behaviour Diseases 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 238000004455 differential thermal analysis Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000000265 homogenisation Methods 0.000 description 1
- 125000001183 hydrocarbyl group Chemical group 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000012768 molten material Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000000518 rheometry Methods 0.000 description 1
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
- D01F6/58—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products
- D01F6/62—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products from polyesters
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/10—Esters; Ether-esters
- C08K5/101—Esters; Ether-esters of monocarboxylic acids
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/16—Nitrogen-containing compounds
- C08K5/20—Carboxylic acid amides
-
- 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
- D01F1/00—General methods for the manufacture of artificial filaments or the like
- D01F1/02—Addition of substances to the spinning solution or to the melt
- D01F1/10—Other agents for modifying properties
-
- 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
- D01F6/58—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products
- D01F6/60—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products from polyamides
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- General Chemical & Material Sciences (AREA)
- Textile Engineering (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Artificial Filaments (AREA)
Abstract
A method of spinning synthetic fiber by the extrusion of thermoplastic polymers, comprising the step of admixing to these polymers, prior to the extrusion step, a stearate-based additive. Fibers obtained by the disclosed method and containing the stearate-based additive in concentrations ranging from 0.03% to 0.3% by weight.
Description
SPECIFICATION
A method of spinning thermoplastic polymeric materials, by melting synthetic fibers, and related fiber and articles of manufacture
This invention relates to a method of spinning thermoplastic polymeric materials, by melting synthetic fibers, and related fiber and articles of manufacture.
It is known that extrusion processing of thermoplastic polymeric materials (the term referring, for example, to amidic or esteric or hydrocarbon structure polymers) involves the use of dies including an endless screw, or auger, arranged to rotate within a heated drum for melting the thermoplastic material and simultaneously pumping it through the dies or into the molds.
The thermoplastic polymeric material is usually fed in as chips or flakes, and is input with energy both in the form of melting thermal energy and of pumping mechanical energy.
The molten polymer has sometimes an abnormal behaviour during the extrusion process, which may involve, for example, non-constant flow rates while leavig unchanged the die rpm, or varying rates totally unrelated to the die rpm.
The reasons why the molten polymer behaves abnormally in the die are manifold: enhanced intermolecular cohesive forces which result in irregular mass ratios for a given flow rate, molten polymer-metal (forming the apparatus as a whole) adhesive forces which may result in an irregular behavior of flow rate as the screw speed changes.
While the use of additives to assist a smooth outflow of a molten thermoplastic polymer through the extruder and improve the product characteristics has been long known, their application to textile fibers involves considerable difficulties, both on account of the moderate amounts which have to be introduced not to adversely affect the yarn properties and of the problem of homogenizing the additive with the thermoplastic material chips.
It is an object of this invention to provide an additive which can impart improved extrudability characteristics to a thermoplastic material for textile fibers.
A further object of this invention is to arrange for the additive provided to assist in improving the mechanical characteristics of the extruded material, while improving its stretchability.
In fact, a noteworthy feature of a fiber obtained by means of a melt spinning process is stretchability, which controls the amount of material that can be processed on one die.
In fact, during subsequent stretching processes it becomes possible, for a given final count, to process a process having an initial count, as achieved in spinning, which is the higher the higher is the product stretchability.
Thus, spinning machines can, for a given picking speed, produce higher counts, and hence a larger product output per unit time.
The behavior of the thermoplastic polymer during the extrusion process is studied, in this specific case, on small size extruders of the type of those employed with rheometry apparata, capable of monitoring the polymer temperature at various points on the extruder screw, as well as the amount of power absorbed by the electric motor driving the screw and the material flow rate as the rpm change. The ideal behavior of a polymer during extrusion processes requires but low energy inputs and flow rates which grow linearly with the extruder screw determining the overall rate of flow.
It is generally observed that where the polymeric material has an irregular behavior at the rheometer die, that affected by larger size dies, such as used with melt spinning, is likewise irregular.
A smooth rate of flow ensures proper treatment by extrusion and avoids that a part of the material may stay for too long in the die, with the attendant risk of local overheating and thermal degradation of the polymer macromolecular chains and consequent loss of product quality. Furthermore, a smooth flow of the melt through the die allows for the electric motor to operate effortlessly, thus reducing the electric power consumption.
It is a primary object of this invention to provide a method which can overcome such prior drawbacks by providing a synthetic fiber spinning method by the extrusion of thermoplastic polymers, wherein said polymers are admixed prior to extrusion with a stearate-base additive.
It has been unexpectedly found that a particular class of additives can make the behavior of molten materials through the dies a regular one, with considerable benefits also for an application to spinning systems where dies are utilized for mass transportation.
Further, a polymeric material containing the cited additives exhibits particular structural characteristics in terms of stretchability of the thread-like product, enabling, other factors being the same, an increased output of the extruding equipment.
The class of compounds is that of stearates, having an esteric or amidic chemical structure; preferred are the stearates which contain one or more stearoyl and/or stearyl groups: X-NH-Y,
X-O-Y, X-O-R-OX, X-NH-R-NHX, Y-NH-R-NH-Y, Y-O-R-O-Y, where R is the steroyl group CH3(CH2)16-CO; Y is the stearyl group CH3(CH2),7-; R = alkyl, aryl, alkylaryl group.
In particular, this invention contemplates the use of stearyl stearate as the additive, as is brought out by the Examples hereinafter which have been conducted on experimental equip
ment, as indicated.
The amounts to be used vary from 0.005% to 1%, preferably from 0.03% to 0.3%,
depending on the polymer being considered.
Textile fibers are highly responsive to the presence of additives, which may jeopardize their characteristics like dye-assuming ability, or color stability, etc. For this reason, it is extremely
important that the additives be introduced in small percent amounts. The main problem is, therefore, that of ensuring thorough homogenization of a small amount of additive through the
mass of polymeric material, to provide uniform characteristics for the products and avoid highly
undesirable local build-ups.
The subject matter of this invention is the addition of an amount of an additive belonging to the cited classes and in the amounts indicated, to the mass of thermoplastic polymer prior to spinning, and in particular either before or during the drying step.
Contemplated is a drying step for a thermoplastic polymer useful in the production of synthetic fibers which is conducted at temperatures in the range of about 11 0, to 1 30 C, in
rotary driers which mix large amounts of polymeric material granules over a time of some hours.
The addition of an additive from the cited class at this stage brings about undoubted advantages, the melting temperature of the additives in question being lower than that at which drying is conducted. Throughout the drying step, therefore, the additive is present in the fluid state, and can flow over the polymer granules to distribute itself over the latter in a uniform fashion in the form of a film. The good distribution of the additive is aided by the mixing to which the granules are subjected. which exerts a destructive action on any additive agglomerates.
On exiting the drier, the granules of polymeric material have on their surfaces a very thin uniform film.
During the extrusion steps, the additive melts around the auger together with the polymer granules, and appears to be homogeneously distributed throughout the melt, thus facilitating the material extrusion.
Other advantages connected with the use of the above-described substances, additionally to the regular operation of the die, concern the possibility of lowering the temperatures of the heating regions of said dies to provide a molten polymer of appropriate viscosity for the subsequent spinning operation.
The possibility of working at a lower temperature is advantageous with polymers which tend to degrade at the process temperatures.
A further advantage, resulting from the presence of stearate-based additives, concerns the improved mechanical properties of the extruded material.
The finding forming the subject matter of this invention is described in the following Examples of some preferred embodiments thereof.
EXAMPLE 1
5 kg polyethylenetherephthalate containing 0.04% stearyl-stearate were vacuum dried down to a residual water value of 0.006%. The polymer is added under an anhydrous nitrogen stream into the hopper of a Brabender rheometer using a single-screw extruder having a diameter of 20 mm.
Graph 1, where shown respectively on the ordinates are the polymer flow rates and on the abscissae the corresponding die rpm, shows a rectilinear behavior Q/n.g. Compare in that same graph, by contrast, the behavior of polyethyleneterephthalate not containing stearate; there exists a gap of irregular behavior in the 30 to 60 rpm range.
The Example demonstrates, therefore, the importance of the additive in making the relation
Q/n.g. linear.
Graph 2 shows instead the energy input, in Newtons per meter (NM), to the Brabender screw according to rpm.
The presence of the stearate additive makes the behavior linear which would otherwise be irregular with much higher energy values.
EXAMPLE 2
5 kg Nylon 6 containing 0.1% N,N'-ethylenebisdistearamide are dried under a vacuum down to a residual water value of 0.08%. The polymer is fed in under an anhydrous nitrogen stream into the hopper of the Brabender rheometer.
Graphs 3 and 4 show, respectively, the behaviors of Q/n.g and N.m/n.g in the presence and absence of the additive.
Also in that Example it is confirmed that the molten polyamide 6 undergoes a regular mass transport through the die, by varying at will the rpm, when the stearate additive is added in the amounts considered.
Two samples of the polymer extruded at the rate of 70 rpm, respectively containing and not containing distereamidic additive, show a crystallinity of 41% and 36% as determined on a
Mettler instrument for differential thermal analysis, indicating improved crystallinity accompanied by improved mechanical properties of the extrudate.
A further series of analyses and tests have been conducted to demonstrate how the use of sterylstearate as an additive for textile fibers, results in an unexpected improvement of the product stretchability.
The tests are comparatively conducted on a common yarn sample (ST) and a sample containing sterylstearate in the cited percentages.
The cited improved characteristics of the polymer treated with the additive of this invention are described in the following series of-analyses and tests, conducted comparatively on a yarn sample containing the additive and sample yarn of ordinary composition (ST).
It may be noticed that owing to the addition of the additive, improved stretchability can be achieved without prejudice for any of the yarn characteristics. The production output pattern, expressed as percent increase of the processed material through the same extruder per unit time, reaches 6-7%, thanks indeed to the cited stretchability increase.
EXAMPLE 3
The tests are conducted at two different picking speeds: 4,000 and 4,500 m/minute. Data relating to the latter speed are shown in brackets in Table 1.
In Table 1, the additive employed is commercially available stearyl stearate.
REFERENCE ADD11IVE ~lCount7fzl-ments manta- I---------L--1 (dtex/number) 27.2/7 (27/7) 29.3/7 (28:7/7) Tenacity (cN/Tex) 45 . (42.7) 42.7 (41.8) Elongation (%) 72 (78) 77 (79) lnitiel modu3e 36 (20) ]17 (116) v (cN/lex) 136 (320) 117 (Z16) - ~~ Jount filaments Count filament6 (dtex/N) 21.9/7 (21.8/ ) 22.2/7 (22/7) Tenacity (cN/Tex) | 42.2 (43.5) 43.6 (43.8) Elongation | Elongation (",) 28.3 (28.9) 27 (28) Initial | module 202 198) (c}; /lex) 1 189 (190) (1 so) rigidity I (55.5) rigidity (i) shrinkage 62.5 shrinkage 62.5 (64.5)! 62 (64) I sxl (2) I b Crimp module (45.9)1 43 456 ( p (2) 45 4 Crimp stability | 79 (74 I X j (0 (2) 79 (74 8 1 74 (73 8) (2) K stretch .24 (1.24 1 74 (1.30) ( TABLE I: comparison between the characteristics of Nylon 6
fiber containing and not containing 0.3 percent
stearylstearate. The data in brackets relates to
threads extruded at a speed of 4,500 m/sec.
(1) with the Heberlein method
(2) with the Texturmat method
Claims (11)
1. A method of spinning synthetic fibers by the extrusion of thermoplastic polymers, characterized in that said polymers are admixed prior to their extrusion with a stearate-based additive.
2. A method according to Claim 1, characterized in that said additive is selected from stearates having an esteric or amidic kylic structure.
3. A method according to Claim 2, characterized in that said additive contains at least one or more stearoyl or steryl groups.
4. A method according to Claim 3, characterized in that said stearoyl and/or stearyl groups are present in compounds having a general formula selected from X-NH-Y, X-O-Y, X-O-R-OX, X-NH-R-NHX, Y-NH-R-NH-Y, Y-O-R-O-Y, where R is an alkyl, aryl, or alkylaryl group, and X is the stearoyl group CH3(CH2)l6-CO-, and Y is the stearyl group CH3(CH2)17-.
5. A method according to Claim 1, comprising a step of drying said thermoplastic polymer upstream of said extrusion, wherein said admixture is performed concurrently with said drying step.
6. A method according to Claim 5, characterized in that said additive is added in concentrations varying from 0.1% to 0.3%.
7. A method according to Claim 6, characterized in that said additive is stearylstearate.
8. A method according to Claim 6, characterized in that said additive is ethylenebistrisstearamide.
9. A method according to Claim 1, characterized in that said thermoplastic polymer is polyethyleneterephthalate.
1 0. A method according to Claim 1, characterized in that said thermoplastic polymer is polyamide 6.
11. A fiber obtained with the method according to any of the preceding claims, characterized in that it contains said additive.
1 2. A fiber according to Claim 11, characterized in that said additive is provided in concentrations varying from 0.03% to 0.3% by weight.
1 3. A fiber according to Claim 11, characterized in that the concentration of said additive ranges from 0.1% to 0.3% by weight.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT24459/83A IT1170091B (en) | 1983-12-30 | 1983-12-30 | PROCEDURE FOR SPINNING THERMOPLASTIC POLYMERIC MATERIALS BY MELTING SYNTHETIC FIBERS, FIBERS AND RELATED MANUFACTURES |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB8431813D0 GB8431813D0 (en) | 1985-01-30 |
| GB2152061A true GB2152061A (en) | 1985-07-31 |
Family
ID=11213602
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB08431813A Withdrawn GB2152061A (en) | 1983-12-30 | 1984-12-17 | Melt spinning thermoplastic polymers |
Country Status (4)
| Country | Link |
|---|---|
| BE (1) | BE901419A (en) |
| FR (1) | FR2557599A1 (en) |
| GB (1) | GB2152061A (en) |
| IT (1) | IT1170091B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0577091A1 (en) * | 1992-07-02 | 1994-01-05 | Hoechst Celanese Corporation | Fiber, having improved properties, composition for producing such fibers, and process for improving properties of fibers |
| US5732346A (en) * | 1993-06-17 | 1998-03-24 | Research In Motion Limited | Translation and connection device for radio frequency point of sale transaction systems |
| US5998503A (en) * | 1996-08-29 | 1999-12-07 | E. I. Du Pont De Nemours And Company | Polymer flame retardant |
| GB2411656A (en) * | 2004-03-02 | 2005-09-07 | Croda Int Plc | Ester slip agents |
| EP2245077B1 (en) | 2008-01-21 | 2018-06-06 | Imerys Pigments, Inc. | Monofilament fibers comprising ground calcium carbonate |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB751751A (en) * | 1952-12-05 | 1956-07-04 | Du Pont | Melt-extrusion of polyethylene |
| GB985937A (en) * | 1960-11-10 | 1965-03-10 | Nippon Rayon Kabushiki Kaisha | A process for the manufacture of spinnable polypropylene compositions having improved dyeability |
| GB1016953A (en) * | 1961-10-10 | 1966-01-12 | Hoechst Ag | Process for the manufacture of shaped articles of linear polyolefines |
| GB1080139A (en) * | 1963-10-26 | 1967-08-23 | Basf Ag | Molding material based on polypropylene and carboxylic amides |
| GB1138520A (en) * | 1965-12-23 | 1969-01-01 | Kanegafuchi Spinning Co Ltd | A method for preventing stickiness of fibres consisting of or comprising copolyamide |
| GB1156251A (en) * | 1966-07-29 | 1969-06-25 | Allied Chem | Process for Melt-Spinning Fibres and Spinnable Compositions for use therein |
| GB1157343A (en) * | 1965-08-27 | 1969-07-09 | Firestone Tire & Rubber Co | Method for the Production of Nylon Filament, Fibre, Yarn, Cord or Strapping |
| GB1325778A (en) * | 1970-03-05 | 1973-08-08 | Asahi Chemical Ind | Polyamide compositions |
| GB1339813A (en) * | 1971-11-05 | 1973-12-05 | Monsanto Co | Urethane elastomers |
| GB1390324A (en) * | 1972-07-28 | 1975-04-09 | Monsanto Co | Urethane elastomers and process for producing them |
| GB1460596A (en) * | 1973-03-07 | 1977-01-06 | Bayer Ag | Polyamide compositions which have been rendered antistatic by the addition of sulphonatocarboxylic acid amides |
| GB1480298A (en) * | 1974-03-01 | 1977-07-20 | Bayer Ag | Antistatic polyamide compositions their use and processes for their production |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1157344A (en) * | 1965-08-27 | 1969-07-09 | Firestone Tire & Rubber Co | Melt-Blended Polymeric Material |
| US3533994A (en) * | 1968-02-20 | 1970-10-13 | Fmc Corp | Stabilized polyesters |
| US3801530A (en) * | 1973-04-12 | 1974-04-02 | Celanese Corp | Stabilized polyalkylene resin composition and process for making same |
-
1983
- 1983-12-30 IT IT24459/83A patent/IT1170091B/en active
-
1984
- 1984-12-17 GB GB08431813A patent/GB2152061A/en not_active Withdrawn
- 1984-12-27 FR FR8419926A patent/FR2557599A1/en active Pending
- 1984-12-28 BE BE0/214273A patent/BE901419A/en not_active IP Right Cessation
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB751751A (en) * | 1952-12-05 | 1956-07-04 | Du Pont | Melt-extrusion of polyethylene |
| GB985937A (en) * | 1960-11-10 | 1965-03-10 | Nippon Rayon Kabushiki Kaisha | A process for the manufacture of spinnable polypropylene compositions having improved dyeability |
| GB1016953A (en) * | 1961-10-10 | 1966-01-12 | Hoechst Ag | Process for the manufacture of shaped articles of linear polyolefines |
| GB1080139A (en) * | 1963-10-26 | 1967-08-23 | Basf Ag | Molding material based on polypropylene and carboxylic amides |
| GB1157343A (en) * | 1965-08-27 | 1969-07-09 | Firestone Tire & Rubber Co | Method for the Production of Nylon Filament, Fibre, Yarn, Cord or Strapping |
| GB1138520A (en) * | 1965-12-23 | 1969-01-01 | Kanegafuchi Spinning Co Ltd | A method for preventing stickiness of fibres consisting of or comprising copolyamide |
| GB1156251A (en) * | 1966-07-29 | 1969-06-25 | Allied Chem | Process for Melt-Spinning Fibres and Spinnable Compositions for use therein |
| GB1325778A (en) * | 1970-03-05 | 1973-08-08 | Asahi Chemical Ind | Polyamide compositions |
| GB1339813A (en) * | 1971-11-05 | 1973-12-05 | Monsanto Co | Urethane elastomers |
| GB1390324A (en) * | 1972-07-28 | 1975-04-09 | Monsanto Co | Urethane elastomers and process for producing them |
| GB1460596A (en) * | 1973-03-07 | 1977-01-06 | Bayer Ag | Polyamide compositions which have been rendered antistatic by the addition of sulphonatocarboxylic acid amides |
| GB1480298A (en) * | 1974-03-01 | 1977-07-20 | Bayer Ag | Antistatic polyamide compositions their use and processes for their production |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0577091A1 (en) * | 1992-07-02 | 1994-01-05 | Hoechst Celanese Corporation | Fiber, having improved properties, composition for producing such fibers, and process for improving properties of fibers |
| US5714258A (en) * | 1992-07-02 | 1998-02-03 | Hoechest Celanese Corporation | Fiber having improved properties, compositions for producing such fibers, and process for improving properties of fibers |
| US5732346A (en) * | 1993-06-17 | 1998-03-24 | Research In Motion Limited | Translation and connection device for radio frequency point of sale transaction systems |
| US5862183A (en) * | 1993-06-17 | 1999-01-19 | Research In Motion Limited | Transition and connection device for radio frequency point of sale transaction systems |
| US6061557A (en) * | 1993-06-17 | 2000-05-09 | Research In Motion Limited | Translation and connection device for radio frequency point of sale transaction systems |
| US5998503A (en) * | 1996-08-29 | 1999-12-07 | E. I. Du Pont De Nemours And Company | Polymer flame retardant |
| US6015510A (en) * | 1996-08-29 | 2000-01-18 | E. I. Du Pont De Nemours And Company | Polymer flame retardant |
| GB2411656A (en) * | 2004-03-02 | 2005-09-07 | Croda Int Plc | Ester slip agents |
| GB2412375A (en) * | 2004-03-02 | 2005-09-28 | Croda Int Plc | Ester slip agents |
| GB2411656B (en) * | 2004-03-02 | 2008-11-12 | Croda Int Plc | Ester slip agents |
| US7501467B2 (en) | 2004-03-02 | 2009-03-10 | Croda International Plc | Aliphatic ester compounds as slip agents in polyester polymers |
| EP2245077B1 (en) | 2008-01-21 | 2018-06-06 | Imerys Pigments, Inc. | Monofilament fibers comprising ground calcium carbonate |
Also Published As
| Publication number | Publication date |
|---|---|
| GB8431813D0 (en) | 1985-01-30 |
| FR2557599A1 (en) | 1985-07-05 |
| IT8324459A0 (en) | 1983-12-30 |
| BE901419A (en) | 1985-06-28 |
| IT1170091B (en) | 1987-06-03 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |