vulcanization of rubber google patents in nigeria
US1538076A - Vulcanization of rubber
Description. Vulcanized rubber products vulcanized with the addition of a small amount of a mixture including di-orthotolyl-guanidine and diparatolylguanidine in which the orthotolylguanidine predominates. 12. Vulcanized rubber products vulcanized with the addition ofa small amount of a mixture including di-orthotolylguanidine,...
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GB1255646A - Vulcanization of rubber
A rubber containing carbon-carbon double bonds is reacted with a compound of formula X-Ar-NO where X is hydroxy or a primary or secondary amino group and Ar is an aromatic group, and the pendant amino or hydroxy groups in the product are reacted with a polyfunctional linking agent to cross-link the rubber.
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US2013117A - Vulcanization of rubber
rubber urea vulcanization temperatures acidic Prior art date 1931-01-05 Legal status (The legal status is an assumption and is not a legal conclusion. Chemical has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Expired - Lifetime Application number US506737A Inventor William F Tuley
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US2131127A - Vulcanization of rubber
Description. 5. A method of accelerating the vulcanization of rubber which comprises vulcanizing in the presence of an organic sulphur accelerator. selected from the class consisting, of 1 the mercaptothiazoles, thiuramsulphides and dithiocarbamates 'and the salt of an aliphatic polybasic organic acid and a guanidine.
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US2308970A - Vulcanization method
A feature of the invention is that in vulcanizing this rubber, the superheated steam may dry it before appreciable vulcanization is-eiected. This is particularly true when atmospheric pressure is used in the vulcanization chamber, and the temperature of the superheated steam within the vulcanization chamber is kept a little above 100 C.
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US1597233A - Vulcanization of rubber
rubber vulcanization substituted compound agent Prior art date 1923-02-27 Legal status (The legal status is an assumption and is not a legal conclusion. Chemical has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Expired - Lifetime Application number US621681A Inventor Ralph V Heuser Original Assignee
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WO2014082172A1 - Vulcanized rubber conversion
Vulcanized rubber, for example from used tires, can be devulcanized to provide a reaction product that has similar rheological properties to the original un-vulcanized rubber. The vulcanized rubber is processed at a temperature that is less than a critical temperature of a solvent, such as water or water and alcohol.
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US26264A
I take a strip or sheet of rubber or guttapercha, or of cloth covered with rubber or gutta-percharthe latter being the stronger and better-and vulcanize it. I prefer during this process of vulcanization to subject this strip to a higher degree of heat than usualsay about 280for reasons which will hereinafter appear.
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rubber vulcanization bicycle tyre accelerator cbs | rubber
1 Vulcanization & Accelerators Vulcanization is a cross linking process in which individual molecules of rubber (polymer) are converted into a three dimensional network of interconnected (polymer) chains through chemical cross links(of sulfur).
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repair - What does vulcanizing solution in patch kits
In the presence of oxygen, the bonds between the sulfur atoms slowly reform and restore the crosslinks. If new rubber, such as a patch, is in contact with the old rubber and has exposed sulfur atoms, new cross-links can be formed between the old and new rubber. The result is a true (covalent) chemical bond between the inner tube and the patch.
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US1538076A - Vulcanization of rubber
Description. Vulcanized rubber products vulcanized with the addition of a small amount of a mixture including di-orthotolyl-guanidine and diparatolylguanidine in which the orthotolylguanidine predominates. 12. Vulcanized rubber products vulcanized with the addition ofa small amount of a mixture including di-orthotolylguanidine,...
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rubber vulcanization resins exchange resin Prior art date 1945-06-01 Legal status (The legal status is an assumption and is not a legal conclusion. Chemical has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Expired - Lifetime Application number US596999A Inventor Stephen T Semegen
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US2013117A - Vulcanization of rubber
rubber urea vulcanization temperatures acidic Prior art date 1931-01-05 Legal status (The legal status is an assumption and is not a legal conclusion. Chemical has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Expired - Lifetime Application number US506737A Inventor William F Tuley
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US2131127A - Vulcanization of rubber
Description. 5. A method of accelerating the vulcanization of rubber which comprises vulcanizing in the presence of an organic sulphur accelerator. selected from the class consisting, of 1 the mercaptothiazoles, thiuramsulphides and dithiocarbamates 'and the salt of an aliphatic polybasic organic acid and a guanidine.
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US1597233A - Vulcanization of rubber
rubber vulcanization substituted compound agent Prior art date 1923-02-27 Legal status (The legal status is an assumption and is not a legal conclusion. Chemical has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Expired - Lifetime Application number US621681A Inventor Ralph V Heuser Original Assignee
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Why is vulcanization called "vulcanization"? - Stack Exchange
Thomas Hancock, a British scientist and inventor: On 21 November 1843, Hancock took out a patent for the vulcanisation of rubber using sulphur, 8 weeks before Charles Goodyear in the US (30 January 1844). He mentioned in his "Personal Narrative" that his friend William Brockendon invented...
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Vulcanization of elastomers. - Free Online Library
Hancock further refined this process and received a British patent in 1843 for sulfur vulcanization and for practical rubber processing techniques such as mastication (ref. 3). Although sulfur alone will vulcanize rubber, it is an inefficient and slow process and the compound typically exhibits inferior properties.
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Charles Goodyear
Charles Goodyear. Charles Goodyear (December 29, 1800 – July 1, 1860) was an American self-taught chemist and manufacturing engineer who developed vulcanized rubber, for which he received patent number 3633 from the United States Patent Office on June 15, 1844.
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