GB2213491A - A pneumatic vehicle tyre - Google Patents
A pneumatic vehicle tyre Download PDFInfo
- Publication number
- GB2213491A GB2213491A GB8828509A GB8828509A GB2213491A GB 2213491 A GB2213491 A GB 2213491A GB 8828509 A GB8828509 A GB 8828509A GB 8828509 A GB8828509 A GB 8828509A GB 2213491 A GB2213491 A GB 2213491A
- Authority
- GB
- United Kingdom
- Prior art keywords
- rubber
- parts
- pneumatic vehicle
- vehicle tyre
- elastomer
- 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.)
- Granted
Links
- 229920001971 elastomer Polymers 0.000 claims description 18
- 229920001195 polyisoprene Polymers 0.000 claims description 8
- 239000000806 elastomer Substances 0.000 claims description 7
- 230000003014 reinforcing effect Effects 0.000 claims description 7
- 239000004744 fabric Substances 0.000 claims description 6
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 4
- 229910052751 metal Inorganic materials 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- 244000043261 Hevea brasiliensis Species 0.000 claims description 3
- 229920003052 natural elastomer Polymers 0.000 claims description 3
- 229920001194 natural rubber Polymers 0.000 claims description 3
- 238000010276 construction Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 description 4
- 230000002787 reinforcement Effects 0.000 description 4
- 229920005549 butyl rubber Polymers 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- OWRCNXZUPFZXOS-UHFFFAOYSA-N 1,3-diphenylguanidine Chemical compound C=1C=CC=CC=1NC(=N)NC1=CC=CC=C1 OWRCNXZUPFZXOS-UHFFFAOYSA-N 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- 230000002730 additional effect Effects 0.000 description 1
- 239000010692 aromatic oil Substances 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 229920005556 chlorobutyl Polymers 0.000 description 1
- 238000010073 coating (rubber) Methods 0.000 description 1
- AFZSMODLJJCVPP-UHFFFAOYSA-N dibenzothiazol-2-yl disulfide Chemical compound C1=CC=C2SC(SSC=3SC4=CC=CC=C4N=3)=NC2=C1 AFZSMODLJJCVPP-UHFFFAOYSA-N 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
- ZUBNXRHITOZMOO-UHFFFAOYSA-N zinc;octadecanoic acid;oxygen(2-) Chemical compound [O-2].[Zn+2].CCCCCCCCCCCCCCCCCC(O)=O ZUBNXRHITOZMOO-UHFFFAOYSA-N 0.000 description 1
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
- B60C9/18—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers
-
- 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
- B60C1/00—Tyres characterised by the chemical composition or the physical arrangement or mixture of the composition
- B60C1/0008—Compositions of the inner liner
-
- 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
- B60C13/00—Tyre sidewalls; Protecting, decorating, marking, or the like, thereof
- B60C13/002—Protection against exterior elements
-
- 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
- B60C5/00—Inflatable pneumatic tyres or inner tubes
- B60C5/12—Inflatable pneumatic tyres or inner tubes without separate inflatable inserts, e.g. tubeless tyres with transverse section open to the rim
- B60C5/14—Inflatable pneumatic tyres or inner tubes without separate inflatable inserts, e.g. tubeless tyres with transverse section open to the rim with impervious liner or coating on the inner wall of the tyre
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Description
1 A PNEUMATIC VEHICLE TYRE 2'"' R 1 4. 1. w A 0., 1 The present invention
relates to a pneumaticvehicle tyre having a radial carcase construction with reinforcing inserts in the form of a belt-like reinforcing inlay of, in particular, metal fabric and/or a fabric covering layer, which consists of cord or filamenting members, which can shrink through the action of heat, laid in a circumferential direction and/or a rubber layer laid radially over the carcase, wherein the rubber mixture consists of an elastomer component ensuring high impermeability to gas.
In pneumatic vehicle tyres of this type, the belt-like reinforcing insert formed of layers of metal fabric is covered by a textile fabric consisting of cord or filamenting members which can contract under the effect of heat. Further coatings which prevent the ingress of moisture- laden air into pneumatic tyres may also be provided. This rubberising is able to ensure satisfactory impermeability to gas. Air and moisture penetrate pneumatic tyres from the exterior and migrate to the layers of reinforcement which frequently include metal members. Air and moisture are prevented from penetrating these layers of reinforcement by means of a known rubber coating in order to protect them against the disadvantageous effects of air and moisture.
The object of the invention is to ensure relatively reduced access by air to the reinforcement and its coatings in pneumatic tyres. This is achieved through the use of an elastomer which has improved impermeability to gas for the purpose and can be used with advantage.
k In accordance with the invention, the object is achieved by the use of an elastomer comprising an epoxidised polyisoprene with at least 20 mol % of oxiran.
By using a modified polyisoprene as the rubber mass each layer of reinforcement or other insert between the 'carcase and the tread surface can be mdde satisfactorily impermeable to gas. Polyisoprene containing oxiran is advantageously used as the rubberising mass for the abovementioned inserts on account of its property of high impermeability to gas. They protect the reinforcing inlays against the possible effects of air and moisture.
The rubberising mass for the inlays can only comprise the epoxidised polyisoprene mentioned. It can however also be formed from the components of a blended rubber mass of natural rubber and epoxidised polyisoprene.
The associated advantages are more particularly described with reference to an example.
Rubber mix for the reinforcing Inlay Exam,n.le N4tural rubber Chlorobutyl rubber Natural rubber containing ENR 50 - 50 1101% oxiran GPT N 660 carbon black Aromatic oil Stearic acid zinc oxide MBTS accelerator DPG accelerator MBS accelerator Sulphur A 5tandard mbberniix for an Inner careace layer Qt butyl rubber parts pphr/100 rubber pphr Pphr pphr 6 pphr 1.5 pphr 0 8 pphr 01 pphr m 1.0 pphr pphr pphr pphr pphr 6 pphr 1. 5 Pphr 5. 0 pphr pphr 1. 5 pphr - A- 4 r Gas impermeability values for mixtures A and E WC 149 1.7 ga 2. 10- 17 504C 5.2 5.7 5.P& 70 C 966 10.6 - From a comparison of these figures. it will be seen that the rubberising mass for the inserts is itself highly impermeable to gas in comparison with butyl elastomers, which are very expensive and are unsatisfactory for processing for the inner layers of pneumatic tyres. When rubberised with the use of epoxidised polyisoprene in an appropriate way the inserts have the advantageous additional property of impermeability to gas as a protection against the effects of moisture of air penetrating from the exterior.
Claims (3)
1. A pneumatic vehicle tyre having a radial carcase construction with reinforcing inserts in the form of a belt-like reinforcing inlay of, in particular, metal fabric andlor a fabric covering layer, which consists of cord or filamenting members, which can shrink through the action of heat, laid in a circumferential direction and/or a rubber layer laid radially over the carcase. wherein the rubber mixture consists of an elastomer component ensuring high impermeability to gas,in which an epoxidised polyisoprene containing- at least 20 mol % of oxiran is used as the elastomer.
2. A pneumatic vehicle tyre as claimed in claim 1, in which the elastomer components comprise at least 20 parts of epoxidised polyisoprene with at least 20 mol % of oxiran and at least 20 parts of natural rubber per 100 parts of rubber and other elastomer components make up the remaining 60 parts per 100 parts of rubber.
3. A pneumatic vehicle tyre, substantially as hereinbefore described and exemplified.
Published 1989 atThe?atentOffice,StateHouse,BB171 High HolbornLondonWC1R4TP.FUrther copier, maybe-Obtainedfrom The P&tentOffLee. Sales Branch, St Mazy Cray, Orpington, Xent BR5 3RD. Printed by Multiplex techniques ltd, St MarY Cr&Y, Xsnt- COI:L- 1/87
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19873741723 DE3741723A1 (en) | 1987-12-09 | 1987-12-09 | VEHICLE TIRES |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| GB8828509D0 GB8828509D0 (en) | 1989-01-11 |
| GB2213491A true GB2213491A (en) | 1989-08-16 |
| GB2213491B GB2213491B (en) | 1991-10-23 |
Family
ID=6342212
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB8828509A Expired - Fee Related GB2213491B (en) | 1987-12-09 | 1988-12-07 | A pneumatic vehicle tyre |
Country Status (4)
| Country | Link |
|---|---|
| DE (1) | DE3741723A1 (en) |
| FR (1) | FR2624440B1 (en) |
| GB (1) | GB2213491B (en) |
| IT (1) | IT1227654B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2023190C (en) * | 1990-03-28 | 1998-09-29 | Paul Harry Sandstrom | Pneumatic tire having air retention toeguard |
| GB9020018D0 (en) * | 1990-09-13 | 1990-10-24 | Sumitomo Rubber Ind | Tubeless pneumatic tyres |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1067165A (en) * | 1962-10-04 | 1967-05-03 | Dunlop Rubber Co | Improvements in the bonding of rubber to metal |
| GB2113692A (en) * | 1981-12-18 | 1983-08-10 | Malaysian Rubber Producers | Epoxidized cis 1,4-polyisoprene rubber |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4341672A (en) * | 1977-12-19 | 1982-07-27 | Phillips Petroleum Company | Sulfur or peroxy cured epoxidized diene rubbers |
| JPS582321A (en) * | 1981-06-29 | 1983-01-07 | Nippon Zeon Co Ltd | Cis-1,4-polyisoprene rubber composition giving improved strength by vulcanization |
| JPS585189A (en) * | 1981-07-01 | 1983-01-12 | Sanraku Inc | Novel amidohydrolase |
-
1987
- 1987-12-09 DE DE19873741723 patent/DE3741723A1/en not_active Withdrawn
-
1988
- 1988-11-30 IT IT8822804A patent/IT1227654B/en active
- 1988-12-07 GB GB8828509A patent/GB2213491B/en not_active Expired - Fee Related
- 1988-12-08 FR FR8816135A patent/FR2624440B1/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1067165A (en) * | 1962-10-04 | 1967-05-03 | Dunlop Rubber Co | Improvements in the bonding of rubber to metal |
| GB2113692A (en) * | 1981-12-18 | 1983-08-10 | Malaysian Rubber Producers | Epoxidized cis 1,4-polyisoprene rubber |
Also Published As
| Publication number | Publication date |
|---|---|
| GB8828509D0 (en) | 1989-01-11 |
| GB2213491B (en) | 1991-10-23 |
| DE3741723A1 (en) | 1989-06-22 |
| FR2624440B1 (en) | 1994-04-15 |
| IT8822804A0 (en) | 1988-11-30 |
| IT1227654B (en) | 1991-04-23 |
| FR2624440A1 (en) | 1989-06-16 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 19971207 |