GB817039A - New benzthiazolylsulphenimides and their use as vulcanisation accelerators - Google Patents

New benzthiazolylsulphenimides and their use as vulcanisation accelerators

Info

Publication number
GB817039A
GB817039A GB1461957A GB1461957A GB817039A GB 817039 A GB817039 A GB 817039A GB 1461957 A GB1461957 A GB 1461957A GB 1461957 A GB1461957 A GB 1461957A GB 817039 A GB817039 A GB 817039A
Authority
GB
United Kingdom
Prior art keywords
tertiary
benzthiazolyl
group
prepared
compound
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
GB1461957A
Inventor
Vincent Kerrigan
Walter Reading
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.)
Imperial Chemical Industries Ltd
Original Assignee
Imperial Chemical Industries Ltd
Filing date
Publication date
Application filed by Imperial Chemical Industries Ltd filed Critical Imperial Chemical Industries Ltd
Priority to US731127A priority Critical patent/US2962481A/en
Priority to DEI14803A priority patent/DE1090665B/en
Priority to FR1206095D priority patent/FR1206095A/en
Publication of GB817039A publication Critical patent/GB817039A/en
Expired legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D277/00Heterocyclic compounds containing 1,3-thiazole or hydrogenated 1,3-thiazole rings
    • C07D277/60Heterocyclic compounds containing 1,3-thiazole or hydrogenated 1,3-thiazole rings condensed with carbocyclic rings or ring systems
    • C07D277/62Benzothiazoles
    • C07D277/68Benzothiazoles with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached in position 2
    • C07D277/70Sulfur atoms
    • C07D277/76Sulfur atoms attached to a second hetero atom
    • C07D277/80Sulfur atoms attached to a second hetero atom to a nitrogen atom
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00Use of organic ingredients
    • C08K5/0008Organic ingredients according to more than one of the "one dot" groups of C08K5/01 - C08K5/59
    • C08K5/0025Crosslinking or vulcanising agents; including accelerators

Abstract

Natural or synthetic rubbers are vulcanized after the incorporation of a N-tertiary-octyl-bis-(benzthiazolyl-2-sulphen)-imide, e.g. the 1,1,3,3-tetramethylbutyl compound, a delayed-action accelerator of vulcanization, useful particularly in preventing scorching of the vulcanizate. The sulphenimide may be incorporated in amounts of up to 10 per cent of the rubber, preferably 0.2-3.0 per cent. The vulcanization may be effected by known methods, e.g. by heating with sulphur at 140 DEG C. for 20-30 minutes. Specified synthetic rubbers are polymers of butadiene-1,3, iso-butene and 2-chlorobutadiene-1,3 and copolymers of these with acrylonitrile, styrene, and methyl methacrylate. The rubbers may also contain fillers, channel and furnace blacks, antioxidants and pigments. An example is of a natural rubber (smoked sheet) mix containing N-1,1,3,3-tetramethylbutyl-bis-(benzthiazolyl-2-sulphen)-imide, and the properties of the vulcanizate. According to the Provisional Specification, any N-tertiary-alkyl-bis-(benzthiazolyl-2-sulphen)-imide may be used, tertiary alkyl groups specified being the tertiary butyl, amyl and hexyl radicals, and tertiary cycloalkyl groups such as 1-methyl-cyclohexyl. The N-tertiary butyl compound is used in an additional example. This material does not appear in the accepted Complete Specification.ALSO:The invention comprises benzthiazolylsulphenimides of the formula <FORM:0817039/IV (b)/1> where R is a tertiary octyl radical, e.g. the 1,1,3,3-tetramethylbutyl group. The compounds may be prepared by reacting a benzthiazolyl-2-sulphenhalide, e.g. the chloride, with a tertiary octylamine in an inert substantially anhydrous organic solvent, e.g. carbon tetrachloride, chloroform, benzene, chlorobenzene, dichlorobenzene and dibutyl ether, preferably one boiling below about 100 DEG C. Suitable temperatures are from 0-75 DEG C., preferably 20-40 DEG C. An acid acceptor is preferably present e.g. pyridine, an alkyl pyridine, or triethylamine. The compounds of the invention may also be prepared by reading benzthiazolyl-2-sulphenchloride (which may be obtained by chlorination of the benzthiazolyl disulphide) with an N-tertiary-octyl-benzthiazolyl-2-sulphenamide in an inert substantially anhydrous solvent, preferably in the presence of an acid acceptor. In examples, the compound is prepared in which R is the 1,1,3,3-tetramethylbutyl group. The compounds are useful in vulcanizing rubber (see Group IV (a)). According to the Provisional Specification, the group R may be any tertiary alkyl group, including cycloalkyl radicals, such as the tertiary butyl, amyl and hexyl groups, and 1-methyl-cyclohexyl radicals. In an example the compound in which R is tertiary butyl is prepared. This material does not appear in the accepted Complete Specification.
GB1461957A 1957-05-08 1957-05-08 New benzthiazolylsulphenimides and their use as vulcanisation accelerators Expired GB817039A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US731127A US2962481A (en) 1957-05-08 1958-04-28 Vulcanization of natural and synthetic rubber
DEI14803A DE1090665B (en) 1957-05-08 1958-05-07 Process for the preparation of N-alkyl-bis (benzthiazolyl-2-sulfen) -imides
FR1206095D FR1206095A (en) 1957-05-08 1958-05-07 New organic nitrogen compounds of the benzothiazylsulfenimide type

Publications (1)

Publication Number Publication Date
GB817039A true GB817039A (en) 1959-07-22

Family

ID=1730882

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1461957A Expired GB817039A (en) 1957-05-08 1957-05-08 New benzthiazolylsulphenimides and their use as vulcanisation accelerators

Country Status (1)

Country Link
GB (1) GB817039A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7291741B2 (en) 2001-08-10 2007-11-06 Duslo A.S. Process of production of n-alkyl-2-benzthiazolysulfeneimides, device for their production and method of their purification

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7291741B2 (en) 2001-08-10 2007-11-06 Duslo A.S. Process of production of n-alkyl-2-benzthiazolysulfeneimides, device for their production and method of their purification

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