GB787068A - Improvements in pneumatic tyres - Google Patents

Improvements in pneumatic tyres

Info

Publication number
GB787068A
GB787068A GB1685156A GB1685156A GB787068A GB 787068 A GB787068 A GB 787068A GB 1685156 A GB1685156 A GB 1685156A GB 1685156 A GB1685156 A GB 1685156A GB 787068 A GB787068 A GB 787068A
Authority
GB
United Kingdom
Prior art keywords
tyre
rubber
liner
parts
natural rubber
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
Application number
GB1685156A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to GB1685156A priority Critical patent/GB787068A/en
Publication of GB787068A publication Critical patent/GB787068A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L23/18—Homopolymers or copolymers of hydrocarbons having four or more carbon atoms
    • C08L23/20—Homopolymers or copolymers of hydrocarbons having four or more carbon atoms having four to nine carbon atoms
    • C08L23/22—Copolymers of isobutene; Butyl rubber ; Homo- or copolymers of other iso-olefins
    • 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
    • C08L9/06—Copolymers with styrene

Abstract

The air-retaining liner of a tubeless tyre is composed of a vulcanized mixture of 50-70 per cent by weight of polyisobutylene, having a molecular weight of at least 80,000 (but usually not exceeding 400,000) with correspondingly 50-30 per cent of either natural rubber or butadiene-styrene copolymer. A typical mix comprises 60 parts of polyisobutylene with 40 parts natural rubber and 45 parts carbon black, together with the usual compounding ingredients of zinc oxide, stearic acid, sulphur, mineral oil, benzothiazyl disulphide and tetramethylthiuram monosulphide. If GR-S rubber is substituted for natural rubber in such a mix, zinc laurate is added. The mixture is sheeted out to provide the liner stock which is built into the tyre to adhere to the natural or GR-S rubber coating of the innermost carcase ply, the tyre then being vulcanized with the liner in situ.
GB1685156A 1956-05-31 1956-05-31 Improvements in pneumatic tyres Expired GB787068A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1685156A GB787068A (en) 1956-05-31 1956-05-31 Improvements in pneumatic tyres

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1685156A GB787068A (en) 1956-05-31 1956-05-31 Improvements in pneumatic tyres

Publications (1)

Publication Number Publication Date
GB787068A true GB787068A (en) 1957-11-27

Family

ID=10084831

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1685156A Expired GB787068A (en) 1956-05-31 1956-05-31 Improvements in pneumatic tyres

Country Status (1)

Country Link
GB (1) GB787068A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4280543A (en) 1976-03-12 1981-07-28 Dunlop Limited Pneumatic tires
US4350621A (en) 1977-09-09 1982-09-21 Dunlop Limited Elastomer compositions for tire tread
WO2007033893A1 (en) 2005-09-21 2007-03-29 Continental Aktiengesellschaft Rubber mixture for inner liner of pneumatic vehicle tyres

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4280543A (en) 1976-03-12 1981-07-28 Dunlop Limited Pneumatic tires
US4350621A (en) 1977-09-09 1982-09-21 Dunlop Limited Elastomer compositions for tire tread
WO2007033893A1 (en) 2005-09-21 2007-03-29 Continental Aktiengesellschaft Rubber mixture for inner liner of pneumatic vehicle tyres

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