CA2023558A1 - Polyester monofil for the carcass of radial tires - Google Patents
Polyester monofil for the carcass of radial tiresInfo
- Publication number
- CA2023558A1 CA2023558A1 CA 2023558 CA2023558A CA2023558A1 CA 2023558 A1 CA2023558 A1 CA 2023558A1 CA 2023558 CA2023558 CA 2023558 CA 2023558 A CA2023558 A CA 2023558A CA 2023558 A1 CA2023558 A1 CA 2023558A1
- Authority
- CA
- Canada
- Prior art keywords
- monofil
- ing
- preced
- polyester
- tex
- 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.)
- Abandoned
Links
Classifications
-
- 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
-
- 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
- B60C9/0064—Reinforcements comprising monofilaments
-
- 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
- B60C9/02—Carcasses
- B60C9/04—Carcasses the reinforcing cords of each carcass ply arranged in a substantially parallel relationship
- B60C9/08—Carcasses the reinforcing cords of each carcass ply arranged in a substantially parallel relationship the cords extend transversely from bead to bead, i.e. radial ply
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Textile Engineering (AREA)
- Tires In General (AREA)
- Artificial Filaments (AREA)
- Reinforced Plastic Materials (AREA)
- Tyre Moulding (AREA)
- Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
Abstract
Abstract POLYESTER MONOFIL FOR THE CARCASS OF RADIAL TIRES
A monofil is described for the carcass of radial tires.
The monofil consists of a polyester which is more than 90 % polyethylene terephthalate and has a high molecular weight corresponding to an intrinsic viscosity of at least 0.64 and a carboxyl group content of at most 15 meq/kg. The monofil has a diameter of from 0.4 to 0.9 mm, a tenacity of at least 40 cN/tex, a breaking extension of from 12 to 30 %, a reference extension of about 1 % under a load of 45 N, a heat shrinkage of from 0.5 to 5 % in hot air at 160°C and a strength of adhesion to rubber of at least 30 cN/tex/cm.
A monofil is described for the carcass of radial tires.
The monofil consists of a polyester which is more than 90 % polyethylene terephthalate and has a high molecular weight corresponding to an intrinsic viscosity of at least 0.64 and a carboxyl group content of at most 15 meq/kg. The monofil has a diameter of from 0.4 to 0.9 mm, a tenacity of at least 40 cN/tex, a breaking extension of from 12 to 30 %, a reference extension of about 1 % under a load of 45 N, a heat shrinkage of from 0.5 to 5 % in hot air at 160°C and a strength of adhesion to rubber of at least 30 cN/tex/cm.
Description
2~,rp~
HOECHST AKTIENGESELLSCHAFT Dr. VA HOE 89/F 265 De~cription POLYESTER MONOFIL FOR THE CARCASS OF RADIAL TIRES
The invention relates to a monofil for the carcass of radial tires.
EP-A-312,038 discloses producing monofil~ for the tire carca~s from polyamide. Polyester has hitherto only been used as carcass material in the form of multifil tire cord; howeqer, the manufacture of multifil tire cord i8 relatively complicated on account of the repeated twist-ing, doubling and plying.
It is true that polyester monofils for radial tires are known from D~-C-2,161,967; however, they are only used for the belt of the radial tire and, owing to the ~pecial requirements of the carca~s material, are not suitable for use in the carcass.
What is required of the carcass material can be sum-marized as EMLS (high modulus-low shrinkage); the carcass material must exhibit at one and the same time the ba~ically contradictory combination of a high initial modulus, i.e. a steep stress-strain curve, and a low heat shrinkage potential. This requirement presupposes not only a specific manufacturing process but also a high molecular weight on the part of the polyester.
Furthermore, polyester monofils for a tire carcass must be xesistant to hydrolytic and aminolytic degradation;
that is, their carbo~yl group content should be minimal.
However, a high molecular weight and a low level of carbo~yl groups also mean a reduction in the level of reactive groups which govern the adhesion of the monofil to the rubber of the tire. The poor adhesion of polyester to rubber, which i8 always a problem, is still further -- 2~2~3~
reduced to form monofils compared with a multifil~ment yarn from the same count owing to their low speeific surface area.
The invention has for its ob~eet to provide a monofil for the carcass of radial tires which combines ease of manufacture with a high initial modulus and a low heat shrinkage potential but which nonetheless shows good adhesion to the rubber of the tire.
This ob~ect i8 achieved by the present invention when the monofil consists of a polyester which is ore than 90 %
polyethylene terephthalate and has a moleeular weight eorresponding to an intrinsic viscosity of at least 0.64 and a carboxyl group content of at most 15 meq/kg, and when the monofil has a diameter of from 0.4 to 0.9 , a tenaeity of at least 40 eN/tex, a breaking extension of from 12 to 30 %, a referenee elongation of about 1 %
under a load of 45 N, a heat shrinkage of from 0.5 to 5 %
in hot air at 160-C and an adhe~ive attraction to rubber of at least 30 cN/tex/em.
Previou~ly eited DB-C-2,161,967 deseribes a similar polyester monofil for the belt of radial tires. The present invention now surprisingly succeeds in modifying thls polyester monofil in such a way that it can be used ao a carcass material. It differs from the prior nrt polyester monofil in particular in that it has a high elasticity, a greater diameter and excellent adhesion to rubber, the ~trength of the adhesive bond being in pre-ferred cases even higher than the breaking strength.
The low level of carboxyl groups is preferably achieved by a 80~ id state eondensation, i.e. without further chemical modifieation of the polyester. Instead, however, the level of earboxyl groups ean also be redueed by the addition of eapping agents, sueh as earbodiimides~ as deseribed for example in D~-A-1,730,495.
~ 3 ~ ~ ~
The adhesion to rubber i8 preferably obtained by pre-activating the polyester monofil with isocyanates which are applied as an organic solution, for esample in toluene.
S Although the~e techniques are known for multifilament tire cords made of polyester, it is ~urprising that they also produce a high adhesion to rubber in the case of polyester monofils containing an e~tremely low level of carboxyl groups.
The tenacity and heat shrinkage are measured by DIN
methods; the adhesion to rubber i8 conveniently measured by a method which is widely used in the rubber industry.
h one enudn8efrtlhnevem8otniogatiOn i8 vulcanized into a rubber block having an edge length of about 10 mm.
The monofil is clamped at its free end into the ~aws of a tensile tester; at the other end the rubber block is held by méans of a fork-shaped device. The free monofil length between the two points of attachment is 100 and the rate of e~tension is 500 /min. The strength of the adhesion to rubber is calculated from the force required for pulling out the embedded onofil, divided by the original linear density and the length of monof~l vulcanlzed ln~o the rubber block.
Dependinq on the tire construction, it is possible to use monofils having a round cross-section or else monofils having a profiled cross-section to render them still more resistant to bending. Of particular utility are oval cro~s-sections.
~amDle 1 Polyester chips having an intrinsic viscosity of 0.56, measured in dichloroacetic acid at 25-C, and a COOH
content of from 6 to 8 meq/kg are condensed in the solid state by keeping them in a vacuum tumble dryer at froQ
245 to 250-C at 0.3 torr for 18 hours. In the course of 2 ~ 2 ~ r~ ~3i~
this period, the intrinsic viscosity ri~es to 0.76, while the COOH content decrease~ to about 4 meg/kg. After cooling down under reduced pressure, the chips are melt-spun into monofil~ in a dry atmosphere. The temperature of the polyester melt on exit from the extruder is 280~C.
The spinneret has 7 holes each 2.0 mm in diEmeter. The pump rate is 373 g/min.
The monofils are spun into hot water at 70C, then taken up by a first drawing unit at 18.6 m/min, drawn in a water bath at 80C through a drawing die 1.5 i in diameter to a draw ratio of 5.1:1 and thereafter drawn once more in an infrared-heated hot air duct at a radia-tor temperature of 300~C to a draw ratio of 1.2:1. The total draw ratio effected between the first and the third drawing units is thus 6.5:1. The monofils are ~hen ~hrunk by a factor of 0.877 in a hot air oven at a radiated temperature of 260C and wound up onto flanged bobbin~.
The monofils produced in this manner have a diameter of 0.70 mm, a tenacity of 50.0 N/tex, a breaking extension of 23 %, a reference extension of 12.2 % ~at 27 cN/tex), a thermal shrinkage of 2.5 %, measured at 180-C, an intrinsic viscosit~ of 0.74 and a carboxyl group content of 6 meq/kg.
A finish for good adhesion to rubber is applied in a separate operation. To this end the monofils are pulled at a rate of 6 m/min through a bath consisting of poly-methylene-polyphenyl isocyanate ((R)Voranate M 580 from The Dow Ch~mical Company) in 15 % strength in polyol. The monofil~ are then dried in an oven at 220-C for 90 sec-onds without stretching, thereafter dipped into a resorc-inol-formaldehyde latex (RFL), cured in an oven at 220-C
for 90 seconds under a tensile force of 24 N and wound up again.
The monofils finished in this manner have a breaking strength of 266 N, a breaking extension of 14 %, a 2~23~ -3 ~J
reference e~tension of 1 ~ at 45 N, a hot air shrinkaqe of 4.8 % at 160-C and a shrinkage force of 1100 cN at 160-C. The adhesion of the monofils to rubber is greater than 266 Ncm, i.e. greater than the breaking strength.
xample 2 The same polyester raw material as in ~xample 1 is used to produce monofils 0.80 in diameter on a ~onofil production unit having the following parameters: pump rate 418 g/min, 6 ~et holes each 2.6 ; in diameter, speed of first drawing unit 22.8 m/min, draw ratio, temperatures and drawing speeds as in ~xample 1, te per-ature within first drawing zone 72-C, drawing die 1.5 mm in diameter, temperature in second and third drawing zones 320-C.
The re~ultinq monofils have a tenacity of 50 cN/tes, a brenking extension of 21 %, a reference extension of 13.5 ~ at 27 cN/tes, a heat shrinkage of 2.6 ~ at 180-C, an intrin8ic viBCo8ity of 0.74 and a carbosyl group content of 5 meq/kg.
sample 3 A s~m~lar method is used to produce a monofil having an oval cross-section whose long asis is 1.0 mm and whose short asis is 0.35 mm in length.
Before the finish is applied, the nofils have a break-ing strength of 285.7 N combined with a breaking esten-sion of 28 ~, an estensibility of 1.4 % under a load of 4S N and a heat shrinkage of O.S9 % at 160-C.
A different tension during the finishing with (R)Voranate ~ 580 produces finished monofils having the following properties2 Breaking Breaking Reference Shrinkage at strength e~tension estensîon 160^C
at 45 N
t%] t%] t%] t%]
286 23.3 1.2 0.77 287 21.0 1.2 1.15 294 18.8 1.1 1.76 299 15.1 1.0 3.26 300 14.4 1.0 3.53 303 13.2 1.0 4.02 305 12.5 0.9 4.09 The stress-strain characteristics of these finished monofils are displayed in the diagram of the only Figure, in which the dot-dashed curve relates to the monofil before the finish is applied and the solid curves relate to the finished monofils.
HOECHST AKTIENGESELLSCHAFT Dr. VA HOE 89/F 265 De~cription POLYESTER MONOFIL FOR THE CARCASS OF RADIAL TIRES
The invention relates to a monofil for the carcass of radial tires.
EP-A-312,038 discloses producing monofil~ for the tire carca~s from polyamide. Polyester has hitherto only been used as carcass material in the form of multifil tire cord; howeqer, the manufacture of multifil tire cord i8 relatively complicated on account of the repeated twist-ing, doubling and plying.
It is true that polyester monofils for radial tires are known from D~-C-2,161,967; however, they are only used for the belt of the radial tire and, owing to the ~pecial requirements of the carca~s material, are not suitable for use in the carcass.
What is required of the carcass material can be sum-marized as EMLS (high modulus-low shrinkage); the carcass material must exhibit at one and the same time the ba~ically contradictory combination of a high initial modulus, i.e. a steep stress-strain curve, and a low heat shrinkage potential. This requirement presupposes not only a specific manufacturing process but also a high molecular weight on the part of the polyester.
Furthermore, polyester monofils for a tire carcass must be xesistant to hydrolytic and aminolytic degradation;
that is, their carbo~yl group content should be minimal.
However, a high molecular weight and a low level of carbo~yl groups also mean a reduction in the level of reactive groups which govern the adhesion of the monofil to the rubber of the tire. The poor adhesion of polyester to rubber, which i8 always a problem, is still further -- 2~2~3~
reduced to form monofils compared with a multifil~ment yarn from the same count owing to their low speeific surface area.
The invention has for its ob~eet to provide a monofil for the carcass of radial tires which combines ease of manufacture with a high initial modulus and a low heat shrinkage potential but which nonetheless shows good adhesion to the rubber of the tire.
This ob~ect i8 achieved by the present invention when the monofil consists of a polyester which is ore than 90 %
polyethylene terephthalate and has a moleeular weight eorresponding to an intrinsic viscosity of at least 0.64 and a carboxyl group content of at most 15 meq/kg, and when the monofil has a diameter of from 0.4 to 0.9 , a tenaeity of at least 40 eN/tex, a breaking extension of from 12 to 30 %, a referenee elongation of about 1 %
under a load of 45 N, a heat shrinkage of from 0.5 to 5 %
in hot air at 160-C and an adhe~ive attraction to rubber of at least 30 cN/tex/em.
Previou~ly eited DB-C-2,161,967 deseribes a similar polyester monofil for the belt of radial tires. The present invention now surprisingly succeeds in modifying thls polyester monofil in such a way that it can be used ao a carcass material. It differs from the prior nrt polyester monofil in particular in that it has a high elasticity, a greater diameter and excellent adhesion to rubber, the ~trength of the adhesive bond being in pre-ferred cases even higher than the breaking strength.
The low level of carboxyl groups is preferably achieved by a 80~ id state eondensation, i.e. without further chemical modifieation of the polyester. Instead, however, the level of earboxyl groups ean also be redueed by the addition of eapping agents, sueh as earbodiimides~ as deseribed for example in D~-A-1,730,495.
~ 3 ~ ~ ~
The adhesion to rubber i8 preferably obtained by pre-activating the polyester monofil with isocyanates which are applied as an organic solution, for esample in toluene.
S Although the~e techniques are known for multifilament tire cords made of polyester, it is ~urprising that they also produce a high adhesion to rubber in the case of polyester monofils containing an e~tremely low level of carboxyl groups.
The tenacity and heat shrinkage are measured by DIN
methods; the adhesion to rubber i8 conveniently measured by a method which is widely used in the rubber industry.
h one enudn8efrtlhnevem8otniogatiOn i8 vulcanized into a rubber block having an edge length of about 10 mm.
The monofil is clamped at its free end into the ~aws of a tensile tester; at the other end the rubber block is held by méans of a fork-shaped device. The free monofil length between the two points of attachment is 100 and the rate of e~tension is 500 /min. The strength of the adhesion to rubber is calculated from the force required for pulling out the embedded onofil, divided by the original linear density and the length of monof~l vulcanlzed ln~o the rubber block.
Dependinq on the tire construction, it is possible to use monofils having a round cross-section or else monofils having a profiled cross-section to render them still more resistant to bending. Of particular utility are oval cro~s-sections.
~amDle 1 Polyester chips having an intrinsic viscosity of 0.56, measured in dichloroacetic acid at 25-C, and a COOH
content of from 6 to 8 meq/kg are condensed in the solid state by keeping them in a vacuum tumble dryer at froQ
245 to 250-C at 0.3 torr for 18 hours. In the course of 2 ~ 2 ~ r~ ~3i~
this period, the intrinsic viscosity ri~es to 0.76, while the COOH content decrease~ to about 4 meg/kg. After cooling down under reduced pressure, the chips are melt-spun into monofil~ in a dry atmosphere. The temperature of the polyester melt on exit from the extruder is 280~C.
The spinneret has 7 holes each 2.0 mm in diEmeter. The pump rate is 373 g/min.
The monofils are spun into hot water at 70C, then taken up by a first drawing unit at 18.6 m/min, drawn in a water bath at 80C through a drawing die 1.5 i in diameter to a draw ratio of 5.1:1 and thereafter drawn once more in an infrared-heated hot air duct at a radia-tor temperature of 300~C to a draw ratio of 1.2:1. The total draw ratio effected between the first and the third drawing units is thus 6.5:1. The monofils are ~hen ~hrunk by a factor of 0.877 in a hot air oven at a radiated temperature of 260C and wound up onto flanged bobbin~.
The monofils produced in this manner have a diameter of 0.70 mm, a tenacity of 50.0 N/tex, a breaking extension of 23 %, a reference extension of 12.2 % ~at 27 cN/tex), a thermal shrinkage of 2.5 %, measured at 180-C, an intrinsic viscosit~ of 0.74 and a carboxyl group content of 6 meq/kg.
A finish for good adhesion to rubber is applied in a separate operation. To this end the monofils are pulled at a rate of 6 m/min through a bath consisting of poly-methylene-polyphenyl isocyanate ((R)Voranate M 580 from The Dow Ch~mical Company) in 15 % strength in polyol. The monofil~ are then dried in an oven at 220-C for 90 sec-onds without stretching, thereafter dipped into a resorc-inol-formaldehyde latex (RFL), cured in an oven at 220-C
for 90 seconds under a tensile force of 24 N and wound up again.
The monofils finished in this manner have a breaking strength of 266 N, a breaking extension of 14 %, a 2~23~ -3 ~J
reference e~tension of 1 ~ at 45 N, a hot air shrinkaqe of 4.8 % at 160-C and a shrinkage force of 1100 cN at 160-C. The adhesion of the monofils to rubber is greater than 266 Ncm, i.e. greater than the breaking strength.
xample 2 The same polyester raw material as in ~xample 1 is used to produce monofils 0.80 in diameter on a ~onofil production unit having the following parameters: pump rate 418 g/min, 6 ~et holes each 2.6 ; in diameter, speed of first drawing unit 22.8 m/min, draw ratio, temperatures and drawing speeds as in ~xample 1, te per-ature within first drawing zone 72-C, drawing die 1.5 mm in diameter, temperature in second and third drawing zones 320-C.
The re~ultinq monofils have a tenacity of 50 cN/tes, a brenking extension of 21 %, a reference extension of 13.5 ~ at 27 cN/tes, a heat shrinkage of 2.6 ~ at 180-C, an intrin8ic viBCo8ity of 0.74 and a carbosyl group content of 5 meq/kg.
sample 3 A s~m~lar method is used to produce a monofil having an oval cross-section whose long asis is 1.0 mm and whose short asis is 0.35 mm in length.
Before the finish is applied, the nofils have a break-ing strength of 285.7 N combined with a breaking esten-sion of 28 ~, an estensibility of 1.4 % under a load of 4S N and a heat shrinkage of O.S9 % at 160-C.
A different tension during the finishing with (R)Voranate ~ 580 produces finished monofils having the following properties2 Breaking Breaking Reference Shrinkage at strength e~tension estensîon 160^C
at 45 N
t%] t%] t%] t%]
286 23.3 1.2 0.77 287 21.0 1.2 1.15 294 18.8 1.1 1.76 299 15.1 1.0 3.26 300 14.4 1.0 3.53 303 13.2 1.0 4.02 305 12.5 0.9 4.09 The stress-strain characteristics of these finished monofils are displayed in the diagram of the only Figure, in which the dot-dashed curve relates to the monofil before the finish is applied and the solid curves relate to the finished monofils.
Claims (13)
1. A monofil for the carcass of radial tires, comprising a polyester which is more than 90 % polyethylene tereph-thalate and has a molecular weight corresponding to an intrinsic viscosity of at least 0.64 and a carboxyl group content of at most 15 meq/kg and having a diameter of from 0.4 to 0.9 mm, a tenacity of at least 40 cN/tex, a breaking extension of 12 to 30 %, a reference extension of about 1 % under a load of 45 N, a heat shrinkage of from 0.5 to 5 % in hot air at 160°C and a strength of adhesion to rubber of at least 30 cN/tex/cm.
2. The monofil as claimed in claim 1, wherein the car-boxyl group content is at most 10 meq/kg.
3. The monofil as claimed in claim 1 or 2, wherein the carboxyl group content is at most 7 meq/kg.
4. The monofil as claimed in at least one of the preced-ing claims, wherein the tenacity is at least 45 cN/tex.
5. The monofil as claimed in at least one of the preced-ing claims, wherein the tenacity is at least 50 cN/tex.
6. The monofil as claimed in at least one of the preced-ing claims, wherein the polyester has been condensed in the solid state to obtain the low level of carboxyl groups.
7. The monofil as claimed in at least one of the preced-ing claims, wherein capping agents have been added to reduce the level of carboxyl groups.
8. The monofil as claimed in claim 7, wherein the capping agents are carbodiimides.
9. The monofil as claimed in at least one of the preced-ing claims, wherein the strength of adhesion to rubber is greater than the breaking strength.
10. The monofil as claimed in at least one of the preced-ing claims, wherein, to obtain adhesion to rubber, the monofil has been preactivated with isocyanates which have been applied as an organic solution.
11. The monofil as claimed in at least one of the preced-ing claims, having n round cross-section.
12. The monofil as claimed in at least one of claims 1 to 10, having an oval cross-section.
13. The monofil as claimed in claim 1 and substantially as described herein.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEP3927331.8 | 1989-08-18 | ||
| DE19893927331 DE3927331A1 (en) | 1989-08-18 | 1989-08-18 | POLYESTER MONOFIL FOR THE CARCASE OF GOOD TIRES |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2023558A1 true CA2023558A1 (en) | 1991-02-19 |
Family
ID=6387389
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2023558 Abandoned CA2023558A1 (en) | 1989-08-18 | 1990-08-17 | Polyester monofil for the carcass of radial tires |
Country Status (7)
| Country | Link |
|---|---|
| EP (1) | EP0413327A3 (en) |
| JP (1) | JPH03185111A (en) |
| BR (1) | BR9004070A (en) |
| CA (1) | CA2023558A1 (en) |
| DE (1) | DE3927331A1 (en) |
| IE (1) | IE902984A1 (en) |
| PT (1) | PT95019A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0967732A (en) * | 1995-09-01 | 1997-03-11 | Bridgestone Corp | Rubber-reinforcing polyester monofilament and pneumatic radial tire using the same |
| FR2750706B1 (en) * | 1996-07-04 | 1998-11-20 | Rhone Poulenc Fibres & Polymer | FILAMENTS OF SYNTHETIC MATERIAL AND METHOD FOR MANUFACTURING SUCH A FILAMENT |
| WO2015137902A1 (en) * | 2014-03-12 | 2015-09-17 | Kordsa Global Endustriyel Iplik Ve Kord Bezi Sanayi Ve Ticaret Anonim Sirketi | A method for monofilament yarn production |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL253093A (en) * | 1959-06-26 | |||
| DE1770495A1 (en) * | 1968-05-25 | 1971-11-11 | Bayer Ag | Stabilized polyethylene glycol terephthalates |
| DE2161967C3 (en) * | 1971-12-14 | 1984-07-26 | Hoechst Ag, 6230 Frankfurt | Process for the production of a wire from high molecular weight, linear polyesters |
| US3963678A (en) * | 1974-06-17 | 1976-06-15 | E. I. Du Pont De Nemours And Company | Large denier polyethylene terephthalate monofilaments having good transverse properties |
| IL90977A0 (en) * | 1988-07-15 | 1990-02-09 | Du Pont | Monofilament for embedment in rubber |
-
1989
- 1989-08-18 DE DE19893927331 patent/DE3927331A1/en not_active Withdrawn
-
1990
- 1990-08-16 EP EP19900115673 patent/EP0413327A3/en not_active Withdrawn
- 1990-08-17 PT PT9501990A patent/PT95019A/en not_active Application Discontinuation
- 1990-08-17 IE IE298490A patent/IE902984A1/en unknown
- 1990-08-17 CA CA 2023558 patent/CA2023558A1/en not_active Abandoned
- 1990-08-17 BR BR9004070A patent/BR9004070A/en unknown
- 1990-08-18 JP JP2218011A patent/JPH03185111A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| PT95019A (en) | 1991-05-22 |
| DE3927331A1 (en) | 1991-02-21 |
| EP0413327A3 (en) | 1992-01-15 |
| EP0413327A2 (en) | 1991-02-20 |
| JPH03185111A (en) | 1991-08-13 |
| IE902984A1 (en) | 1991-02-27 |
| BR9004070A (en) | 1991-09-03 |
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