EP3261828A1 - Pur/rubber tyre and method of its manufacture - Google Patents
Pur/rubber tyre and method of its manufactureInfo
- Publication number
- EP3261828A1 EP3261828A1 EP16706231.4A EP16706231A EP3261828A1 EP 3261828 A1 EP3261828 A1 EP 3261828A1 EP 16706231 A EP16706231 A EP 16706231A EP 3261828 A1 EP3261828 A1 EP 3261828A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- tread portion
- groups
- carcass
- tyre
- 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.)
- Withdrawn
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
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/62—Polymers of compounds having carbon-to-carbon double bonds
- C08G18/6204—Polymers of olefins
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D30/00—Producing pneumatic or solid tyres or parts thereof
- B29D30/06—Pneumatic tyres or parts thereof (e.g. produced by casting, moulding, compression moulding, injection moulding, centrifugal casting)
- B29D30/52—Unvulcanised treads, e.g. on used tyres; Retreading
- B29D30/54—Retreading
- B29D30/56—Retreading with prevulcanised tread
-
- 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
- B60C5/007—Inflatable pneumatic tyres or inner tubes made from other material than rubber
-
- 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
- B60C5/01—Inflatable pneumatic tyres or inner tubes without substantial cord reinforcement, e.g. cordless tyres, cast tyres
-
- 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
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/08—Processes
- C08G18/10—Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step
-
- 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
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/08—Processes
- C08G18/16—Catalysts
- C08G18/18—Catalysts containing secondary or tertiary amines or salts thereof
-
- 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
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/08—Processes
- C08G18/16—Catalysts
- C08G18/22—Catalysts containing metal compounds
- C08G18/24—Catalysts containing metal compounds of tin
-
- 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
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
- C08G18/72—Polyisocyanates or polyisothiocyanates
- C08G18/74—Polyisocyanates or polyisothiocyanates cyclic
- C08G18/76—Polyisocyanates or polyisothiocyanates cyclic aromatic
- C08G18/7657—Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings
- C08G18/7664—Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings containing alkylene polyphenyl groups
- C08G18/7671—Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings containing alkylene polyphenyl groups containing only one alkylene bisphenyl group
-
- 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
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/04—Carbon
-
- 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
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L7/00—Compositions of natural rubber
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L9/00—Compositions of homopolymers or copolymers of conjugated diene hydrocarbons
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D30/00—Producing pneumatic or solid tyres or parts thereof
- B29D30/06—Pneumatic tyres or parts thereof (e.g. produced by casting, moulding, compression moulding, injection moulding, centrifugal casting)
- B29D30/52—Unvulcanised treads, e.g. on used tyres; Retreading
- B29D30/54—Retreading
- B29D2030/544—Applying an intermediate adhesive layer, e.g. cement or cushioning element between carcass and tread
-
- 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
- C08G2380/00—Tyres
Definitions
- NL 2003748 Al discloses a tyre comprising a carcass of a polyurethane polymer and a tread portion of a rubber polymer.
- the tread portion is moulded with the carcass by providing, between the tread portion and the carcass, a first intermediate layer of a rubber polymer comprising a compound containing carboxylic acid anhydride, and a second intermediate layer of a composition comprising at least a polyisocyanate, a polyol and a catalyst, and polymerizing at least the second intermediate layer.
- the publication further relates to a method for manufacturing the tyre.
- the tyre according to the publication has a relatively low rolling resistance and a good grip on the road.
- Suitable compounds with isocyanate groups include unsaturated mono- and polyisocyanates such as ⁇ , ⁇ -dimethyl meta-isopropenyl benzyl isocyanate and furthermore unsaturated NCO terminated urethane prepolymers.
- carboxylic acid anhydride containing compound possibly comprises other reactive groups, although the reactivity of these groups will preferably be lower than the reactivity of the polyurethane of the carcass with the carboxylic acid anhydride group.
- Compounds suitable for application are for instance saturated aliphatic (di)carboxylic acid anhydrides, such as for instance succinic acid anhydride, glutaric acid anhydride, adipinic acid anhydride and so forth.
- cycloaliphatic dicarboxylic acid anhydrides such as for instance cyclohexane- dicarboxylic acid anhydride.
- Application of cycloaliphatic dicarboxylic acid anhydrides has the additional advantage that discoloration as a result of for instance sunlight is prevented.
- dicarboxylic acid anhydride containing compounds which comprise ethylenic unsaturations are preferably suitable.
- An example of such an ethylenic unsaturated compound is maleic acid anhydride (MAA).
- MAA maleic acid anhydride
- compounds comprising an aromatic unsaturation such as for instance phthalic acid anhydride and/or trimellitic acid anhydride.
- step B) is at least partially performed under vacuum conditions.
- the vacuum is preferably maintained until the polyurethane reaction mixture has cured, i.e. step C) is also performed under vacuum conditions.
- the vulcanized tread portion of step Al) is prepared by combining a styrene butadiene copolymer comprising isocyanate groups, hydroxyl groups, amino groups and/or carboxylic anhydride groups with an uncured rubber composition and curing the resulting mixture.
- the respective functional groups may be terminal functional groups or located on side chains of the polybutadiene.
- the bead is the part of the tyre that attaches the tyre to the rim and wraps the end of the tyre's cord fabric.
- the bead is generally designed to be slightly tight around the rim so that in the case of a sudden drop in inflation pressure, the tyre will not fall off the rim.
- the carcass represents the tyre structural framework and acts to support air pressure, vertical load and absorb shocks.
- the breaker is a cord layer placed between the carcass and the tread in order to protect the carcass of a bias tyre.
- the bonding strength between the tread portion and the carcass as determined by a T-peel test is greater than the bonding strength within the material of the tread portion and/or the bonding strength within the material of the carcass. This means that the failure mode during the T-peel test lies for example in the rubber component and/or the polyurethane component, not on the interface between the polyurethane and rubber layer.
- the bonding strength between the tread portion and the carcass as determined by a T-peel test may be > 70 N. This exceeds the fracture strength of certain rubber compositions.
- the tread portion 20 of the tyre shown is provided with longitudinal grooves and transverse grooves (not shown).
- the longitudinal and transverse grooves define profiled elements.
- the rubber composition for the tread portion may be provided with a conductive filler to make it at least partially conductive.
- a core layer 80 of metal and/or polymeric cords is embedded. This divides the carcass into an outer layer 60 and an inner layer 70. If desired, the tyre may be provided with an inner liner to further improve air tightness. However, this is rarely needed.
- the outer layer 60 of the carcass is firmly bonded to the tread part 20 without additional adhesives. This is effected by the presence of a compound with hydroxyl groups and/or amino groups and/or isocyanate groups and/or carboxylic acid anhydride groups in the rubber of the tread part which reacts with the polyurethane reaction mixture during the forming of the carcass.
- a preferred compound is Krasol NN-3A, the composition of which is described in the experimental section. Examples
- the samples were analysed according to a strip test as outlined by ASTM D1876 with a width of 15 mm and measured at 23 °C.
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB201503378A GB201503378D0 (en) | 2015-02-27 | 2015-02-27 | PUR/rubber tyre and method of its manufacture |
PCT/EP2016/054022 WO2016135264A1 (en) | 2015-02-27 | 2016-02-25 | Pur/rubber tyre and method of its manufacture |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3261828A1 true EP3261828A1 (en) | 2018-01-03 |
Family
ID=52876266
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP16706231.4A Withdrawn EP3261828A1 (en) | 2015-02-27 | 2016-02-25 | Pur/rubber tyre and method of its manufacture |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP3261828A1 (en) |
GB (1) | GB201503378D0 (en) |
WO (1) | WO2016135264A1 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102017202709A1 (en) * | 2017-02-20 | 2018-08-23 | Continental Reifen Deutschland Gmbh | motor vehicle wheel |
DE102018203965A1 (en) * | 2018-03-15 | 2019-09-19 | Continental Reifen Deutschland Gmbh | Method for permanently bonding vulcanised rubber components and vehicle tires |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4669517A (en) * | 1984-03-07 | 1987-06-02 | The Goodyear Tire & Rubber Company | Polyurethane bonded to cured rubber containing a diene polyol |
NL2003748C2 (en) * | 2009-11-03 | 2011-05-04 | Apollo Vredestein Bv | Tire and method for manufacturing a tire. |
KR20140085981A (en) * | 2012-12-28 | 2014-07-08 | 현대자동차주식회사 | Adhesives for bonding polyurethane and vucanized rubber |
-
2015
- 2015-02-27 GB GB201503378A patent/GB201503378D0/en not_active Ceased
-
2016
- 2016-02-25 EP EP16706231.4A patent/EP3261828A1/en not_active Withdrawn
- 2016-02-25 WO PCT/EP2016/054022 patent/WO2016135264A1/en active Application Filing
Also Published As
Publication number | Publication date |
---|---|
WO2016135264A1 (en) | 2016-09-01 |
GB201503378D0 (en) | 2015-04-15 |
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Legal Events
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RIC1 | Information provided on ipc code assigned before grant |
Ipc: C08L 9/00 20060101ALI20211029BHEP Ipc: C08K 3/04 20060101ALI20211029BHEP Ipc: B29D 30/54 20060101ALI20211029BHEP Ipc: C08K 3/22 20060101ALI20211029BHEP Ipc: B60C 5/01 20060101ALI20211029BHEP Ipc: B60C 5/00 20060101ALI20211029BHEP Ipc: B29D 30/56 20060101ALI20211029BHEP Ipc: C08L 7/00 20060101ALI20211029BHEP Ipc: C08G 18/24 20060101ALI20211029BHEP Ipc: C08G 18/18 20060101ALI20211029BHEP Ipc: C08G 18/10 20060101ALI20211029BHEP Ipc: C08G 18/76 20060101ALI20211029BHEP Ipc: C08G 18/62 20060101ALI20211029BHEP Ipc: B60C 1/00 20060101ALI20211029BHEP Ipc: B29D 30/08 20060101AFI20211029BHEP |
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STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
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18D | Application deemed to be withdrawn |
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