Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Patent
1995-03-30
1997-03-11
Cain, Edward J.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
5253327, 525375, C08F 834
Patent
active
056102402
ABSTRACT:
A rubber composition which is the vulcanization reaction product of a rubber, sulfur or a sulfur donor and particular anti-reversion coagents, is disclosed. The anti-reversion coagents only partially react under sulfur-vulcanization reaction conditions up to optimum cure, and, after optimum cure, form cross-links bonded to the sulfur cross-linked rubbers by carbon-carbon linkages. Also disclosed are a vulcanization process carried out in the presence of the anti-reversion coagents and the use of these anti-reversion coagents in the sulfur-vulcanization of rubbers. The anti-reversion coagents of the disclosure provide sulfur-vulcanized rubbers having significantly improved physical properties.
REFERENCES:
patent: 3297713 (1967-01-01), Lado
patent: 3974163 (1976-08-01), Coran et al.
patent: 4323662 (1982-04-01), Oba et al.
patent: 5426155 (1995-06-01), Hogt et al.
"Rubber Microstructure and Reversion". Nordsiek, Dr. K. H., Rubber World, 197, pp. 30-38, 1987.
"Vulcanization with Maleimides," Tawney, P.O. Journ of Applied Poly. Sci., vol. 8, pp. 2281-2297, 1964.
"Vulcanization of cis-1,4-isopropene rubber by deryicates of maleimide under the action of high temperature and radiation" Praschinka, A. S. et al., Kauchuk i Rezina, No. 3, pp. 10-12, Mar. 1974.
"High-temperature vulcanisation of unsaturated rubbers by thio derivatives of maleimide," Prashchikina, A. S. et al, Kauchuk i Rezina, No. 3, pp. 16-20, 1975.
"The Synthesis of biscitraconimides and polybiscitraconimides" Galanti, A. V. and Scola, D. A., Journ of Polym Sci. Polymer Chemistry Edition, vo. 19, pp. 451-475 (1981).
"The Synthesis of biscitraconimides," Galanti, A. V. and Scola, D. A., Journ. of Polym. Sci. Polymer Chemistry Edition, vol. 20 pp. 233-239 (1982).
Physikalische und Chemische Aspeckte der Reversion, Kautschuk + Gummi-Kunststoffe, 34, No. 9, 1981.
"Influence of the type and concentration of crosslinking agent on the effectiveness of a combined system of bismaeimide and sulfur," Kauchuk i Rezina, No. 10, pp. 15-19, 1985.
"High Temperature curing of general-purpose rubbers with a curing system comprising a bismaleimide and sulphur," Prashehinkina, A. S. et al., Kauchuk i Rezina, No. 4, 1977, p. 21.
"Determination of Degree of Crosslinking in Natural Rubber Vulcanizates." Part III, L. Mullins, Journ. of Appl. Poly. Sci., vol. II, issue No. 4, pp. 1-7, 1959.
"A Theory of Large Elastic Deformation," M. Mooney, Journ. of Applied Physics, vol. 2, Sep. 1940, pp. 582-592.
"Structural Characterization of Sulfur-Vulcanized Rubber Networks," B. Saville and A. A. Watson, Rubber Chemistry & Technology, 40, 100 (1967).
"Structural Characterization of Vulcanizates Part X. Thiol-Disul-fide Interchange for Cleaving Disulfide Crosslinks in Natural Rubberwr Vulcanizates," D. S. Campbell, Journal of Appl. Poly, Sci. vol. 13, pp. 1201-1214, 1969.
"Determination of Degree of Crosslinking in Natural Rubber Vulcanizates." Part II. C. G. Moore and W. F. Watson, Journ. of Polymer Sci., vol. XIX, pp. 237-254, 1956.
"Reaction of Methyl Iodide with Vulcanizates," Industrial and Engineering Chemistry, vol. 36, No. 1, pp. 20-28 (1944).
"Advances in natural rubber for tires:compounding for improved car", Baker, C. S. L. et al., Elastometrics, Jul., 1989.
"Relation between the friction and Visco-Properties of Rubber," Grosch, K. A., Nature, Mar. 2, 1963, pp. 858-859.
"Relevence of Elastic and Loss Moduli of Tyre Components to Tyre Energy Losses," Collins. J. M. et al., Transactions of the Icstitution of the Rubber Industry, vol. 40, No. 6, Dec., 1964 pp. 239-256.
"Esters of Boric Acid Offering a Greater Flexibility for Cobalt Bonding Systems," Pieroth, M. and Schubart; L., Kautschuk Gummi, May 1990, pp. 385-387.
"Latest Developments in the Urethane Crosslinking of Natural Rubber," Baker, C. S. L., Kautschuk, Gummi, Aug. 1983, pp. 677-684.
"Vulcanisation of Highly Unsaturated Rubbers with N. N. B. I. S.--maleimide and Derivatives in Absence of Sulphur," Dominoin Rubber Co. Ltd., Can. 738,500, clg. 7. 5.59 (USA) as 811, 517, Pub. Dec. 7, 1966.
"Rubber Technology Handbook," Hofmann, Werner, Hanser Publishers, distrib. in U. S. by Oxford U. Press, pp. 424-429 (1989).
"Synthesis of N-Subsituted Bisitaconimide Monomers for Use as Thermosetting Polyimide Resins," Hartford, S. L. et al., Journ. of Poly. Sci., vol. 16, pp. 137-153 (1982).
Patent Abstracts of Japan, vol. 12, No. 462 (1988).
Patent Abstracts of Japan, vol. 13, No. 111 (1989).
International Search Report.
Datta Rabindra N.
de Block Rudolf F.
Hogt Andreas H.
Talma Auke G.
Akzo Nobel nv
Cain Edward J.
Mancini Ralph J.
Morris Louis A.
LandOfFree
Anti-reversion coagents for rubber vulcanization does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Anti-reversion coagents for rubber vulcanization, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Anti-reversion coagents for rubber vulcanization will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-444320