GB1358209A - Radiation cure of synthetic rubbers - Google Patents

Radiation cure of synthetic rubbers

Info

Publication number
GB1358209A
GB1358209A GB2305972A GB2305972A GB1358209A GB 1358209 A GB1358209 A GB 1358209A GB 2305972 A GB2305972 A GB 2305972A GB 2305972 A GB2305972 A GB 2305972A GB 1358209 A GB1358209 A GB 1358209A
Authority
GB
United Kingdom
Prior art keywords
cross
radiation
rubber
link
average
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
GB2305972A
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.)
Bridgestone Firestone Inc
Original Assignee
Firestone Tire and Rubber Co
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 Firestone Tire and Rubber Co filed Critical Firestone Tire and Rubber Co
Publication of GB1358209A publication Critical patent/GB1358209A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J3/00—Processes of treating or compounding macromolecular substances
    • C08J3/28—Treatment by wave energy or particle radiation
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2321/00—Characterised by the use of unspecified rubbers

Abstract

1358209 Radiation cure of synthetic rubbers FIRESTONE TIRE & RUBBER CO 17 May 1972 [1 June 1971] 23059/72 Heading C3P Synthetic rubber compositions curable by high energy ionizing radiation at an average radiation dose (when the composition is in the pure state) of 0À5-7 megarads, comprise a least one diolefin polymer or copolymer having a weight average molecular weight of at least 50,000 and a molecular weight distribution (defined) or 1À01-30, the distribution of monomer units affecting the total cross-linking rate being such that when the value of the fraction G(cross-link)x i /G(cross-link) (defined) is greater than 1À5, from 50-100% of the monomer whose cross-linking rate contribution is represented by G(cross-link)x i is in molecules having a M.W. less than the weight average M.W. of the rubber; and when the said value is below 0À5, up to 50% of the said monomer is in molecular having a M.W. less than the weight average M.W. of the rubber. The compositions may be blended with conventional additives and cured at average radiation doses of up to 15 megarads, optionally with the aid of radiation promoters, e.g. p-dichlorobenzene, ethylene glycol dimercaptoacetate or a polyhydrosulphide. Suitable rubbers include polybutadiene, SBR and ethylene/propylene/ethylidene norbornene terpolymer.
GB2305972A 1971-06-01 1972-05-17 Radiation cure of synthetic rubbers Expired GB1358209A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US14869671A 1971-06-01 1971-06-01

Publications (1)

Publication Number Publication Date
GB1358209A true GB1358209A (en) 1974-07-03

Family

ID=22526933

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2305972A Expired GB1358209A (en) 1971-06-01 1972-05-17 Radiation cure of synthetic rubbers

Country Status (5)

Country Link
JP (1) JPS5614691B1 (en)
CA (1) CA997100A (en)
DE (1) DE2226106C2 (en)
FR (1) FR2141156A5 (en)
GB (1) GB1358209A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2362015A1 (en) * 1976-08-20 1978-03-17 Firestone Tire & Rubber Co LAMINATE WITH A CLOSING ACTION, ITS OBTAINING AND ITS APPLICATION TO A TIRE
US4140167A (en) * 1976-08-20 1979-02-20 The Firestone Tire & Rubber Company Sealant laminates

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4220512A (en) * 1977-01-24 1980-09-02 The Firestone Tire & Rubber Company Morphology stabilization of heterogeneous polymer blends
DE2931793C2 (en) * 1979-08-04 1982-05-13 Metzeler Kautschuk GmbH, 8000 München Process for the production of rubber articles by crosslinking a rubber mixture
US4559117A (en) * 1982-11-12 1985-12-17 The Firestone Tire & Rubber Company Block copolymers made by radiation crosslinking of miscible mixture of homopolymers

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB901737A (en) * 1958-03-04 1962-07-25 Dunlop Rubber Co Improvements in or relating to oil-extended polymers
GB922531A (en) * 1958-12-30 1963-04-03 Dunlop Rubber Co Improvements in or relating to the curing of rubber
FR1291135A (en) * 1960-05-05 1962-04-20 Dunlop Rubber Co Vulcanization of polymeric materials, in particular of rubber-type elastomers

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2362015A1 (en) * 1976-08-20 1978-03-17 Firestone Tire & Rubber Co LAMINATE WITH A CLOSING ACTION, ITS OBTAINING AND ITS APPLICATION TO A TIRE
US4140167A (en) * 1976-08-20 1979-02-20 The Firestone Tire & Rubber Company Sealant laminates

Also Published As

Publication number Publication date
DE2226106C2 (en) 1982-12-23
CA997100A (en) 1976-09-14
FR2141156A5 (en) 1973-01-19
DE2226106A1 (en) 1972-12-14
JPS5614691B1 (en) 1981-04-06

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee