Boots – shoes – and leggings
Patent
1997-08-01
1998-07-21
Gordon, Paul P.
Boots, shoes, and leggings
36447504, 425170, 264 401, G06F 1900, B29C 4576
Patent
active
057842833
ABSTRACT:
A database of reversion cure constants is provided by measuring a physical property of a rubber formulation at two different temperatures as a function of time, calculating a set of cure constants for the rubber formulation which account for reversion, and storing the constants for later use either to optimize cure for a given process or of a given compound, or to assure quality of a raw compound. The invention also provides a curing press for optimizing cure including a mold, a heater, a temperature transducer, a computer and the database.
REFERENCES:
patent: 3397583 (1968-08-01), Sperberg
patent: 3819915 (1974-06-01), Smith
patent: 4344142 (1982-08-01), Diehr, II et al.
patent: 4371483 (1983-02-01), Mattson
patent: 4551807 (1985-11-01), Hsich et al.
patent: 4810438 (1989-03-01), Webster et al.
patent: 4819177 (1989-04-01), Jurgensen
patent: 5055245 (1991-10-01), Hisatomi et al.
patent: 5125821 (1992-06-01), Saeki et al.
patent: 5207956 (1993-05-01), Kline et al.
patent: 5219498 (1993-06-01), Keller et al.
patent: 5345397 (1994-09-01), Handel et al.
patent: 5453226 (1995-09-01), Kline et al.
M.R. Kamal, et al. "Integrated Thermo-Rheological Analysis Of The Cure Of Thermosets", 31st Annual Technology Conference, SPE, 187, Montreal, Canada, May 1973.
Malkin, A.Y., "The Macrokinetics and Rheokinetics of the Hardening of Oligimers," Russian Chemical Reviews, vol. 54, No. 3, 1985, p. 293.
Kamal, M.R. "Thermoset Characterization for Moldability Analysis," Polymer Engineering and Science, vol. 14, No. 3, 1974, p. 231.
Gehman, S.D., Maxey, F.S., and Ogilby, S.R., "Vulcameter Determination of Best Cure," Rubber Chemistry and Technology, vol. 38, No. 4, 1965, pp. 757-768.
Toth, W.J., Chang, J.P., Zanichelli, C., "Finite Element Evaluation of the State of Cure in a Tire," Tire Science and Technology, TSTCA, vol. 19, No. 4, Oct.-Dec., 1991, pp. 178-212.
Isayev, A.I. and Deng, J.S., "Nonisothermal Vulcanization of Rubber Compounds," Rubber Chemistry and Technology, vol. 61, No. 2, 1988, pp. 340-361.
Deng, J.S. and Isayev, A.I., "Injection Molding of Rubber Compounds: Experimentation and Simulation," Rubber Chemistry and Technology, vol. 64, No. 2, 1991, pp. 296-324.
Deng, J.S., "Taking a Closer Look at the Modeling on Nonisothermal Curing Kinetics," presented at a meeting of the Rubber Division, American Chemical Society, Detroit, Michigan, Oct. 8-11, 1991 (Paper No. 55).
Burger, J., Burger, N., and Pogu, M., "Influence of Some Parameters on the Solution of a Thermal Model of Vulcanization," Rubber Chemistry and Technology, vol. 66, No. 1, 1992, pp. 19-22.
Chan, T.W., Shyu, G.D., and Isayev, A.I., "Reduced Time Approach to Curing Kinetics, Part I: Dynamic Rate and Master Curve from Isothermal Data," Rubber Chemistry and Technology, vol. 66, 1993, pp. 849-864.
Chan, T.W., Shyu, G.D., and Isayev, A.I., "Reduced Time Approach to During Kinetics, Part II: Master Curve from Nonisothermal Data," Rubber Chemistry and Technology, vol. 67, 1994, pp. 314-328.
Nordsiek, K.H., "Rubber microstructure and reversion," Rubbercon 87, Harrogate.
Dogadkin, B., Karmin, B., and Goldberg, I., "Kinetics and Optimum Phenomenon of Vulcanization," Rubber Chemistry and Technology, vol. 20, 1947, pp. 933-937.
Peter, J. and Heidemann, W., "A New Method for Determining the Vulcanization Characteristics of Rubber Compounds," Rubber Chemistry and Technology, vol. 31, 1958, pp. 105-116.
Chen, C.H., Collins, E.A., Shelton, J.R., and Koenig, J.L., "Compounding Variables Influencing the Reversion Process in Accelerated Curing of Natural Rubber," Rubber Chemistry and Technology, vol. 55, No. 4, 1982, pp. 1221-1232.
Bhowmick, A.K. and DE, S.K., "Dithiodimorpholine-Based Accelerator System in Tire Tread Compound for High-Temperature Vulcanization," Rubber Chemistry and Technology, vol. 52, No. 5, 1979, pp. 985-994.
Lyubchanskaya, L.I. and Kuzminskii, A.S., "The Degradation of Main Chains and Crosslinks in the Aging of Vulcanizates," Rubber Chemistry and Technology, vol. 34, 1961, pp. 922-924.
Blackman, E.J. and McCall, E.B., "Relationships Between the Structures of Natural Rubber Vulcanizates and Their Thermal and Oxidative Aging," Rubber Chemistry and Technology, vol. 43, No. 3, 1970, pp. 651-663.
Studebaker, Merton L., "Effect of Curing Systems on Selected Physical Properties of Natural Rubber Vulcanizates," Rubber Chemistry and Technology, vol. 39, No. 5, 1966, pp. 1359-1381.
Parks, C.R., Parker, D.K., Chapman, D.A., and Cox, W.L., "Pendent Accelerator Groups in Rubber Vulcanizates," Rubber Chemistry and Technology, vol. 43, No. 3, 1970, pp. 572-587.
Shankar, Uma, "Investigations of the Reversion of Vulcanized Rubber Under Heat," Rubber Chemistry and Technology, vol. 25, 1952, pp. 241-250.
Beilstein, G., "Some Aspects of High Temperature Vulcanization," Rubber Chemistry and Technology, vol. 34, 1961, pp. 319-333.
Russell, R., Smith, D.A., and Welding, G.N., "Kinetics of Thiazole-Accelerated Sulfur Vulcanization of Natural Rubber," Rubber Chemistry and Technology, vol. 44, 1971, pp. 1316-1325.
Redding, R.B. and Smith, D.A., "Oberall Kinetics of Natural Rubber Vulcanization at High Temperatures," I. Review of Investigation TEchniques, Methods, and Previous Results of Kinetic Analysis, Rubber Chemistry and Technology, vol. 44, 1971, pp. 1316-1325.
Scott, K.W., Lorenz, O., and Parks, Carl L., "Network Degradation Accompanying the Vulcanization of Natural Rubber with a Sulfur-Diphenylguanidine System," J. Applied Poly. Sci., vol. 8, 1968, pp. 2909-2922.
Dinges, U., Westenberger, H., and J. Schnetger, "Computer-Aided Optimization of the Vulcanization Process," Bayer AG, Bayerwerk, 5090 Leverkusen, Germany.
Elandt-Johnson, R.C. and Johnson, N.L., "Survival Models and Data Analysis," J. Wiley and Sons, Inc., N.Y., 1980.
Gnedenko, B., Beliaev, Y., Soloviev, A., "Methodes mathematiques en theorie du fiailite," Mir Moscow, 1972.
Mathcad PLUS 5.0, MathSoft Inc., Cambridge, Mass.
Seber, G.A.F., Wild, C.J., "Nonlinear Regression," J. Wiley and Sons, Inc., N.Y., 1989.
Kende, I., Pickering, T.L., and Tobolsky, A.V., "The Dissociation Energy of the Tetrasulfide Linkage," J. Amer. Chem. Soc., vol. 87, 1965, p. 5582.
Conant, F.S. and Claxton, W.E., "Cepar Measurements of curing Constants, Continuous Measurements of the Cure Rate of Rubber," ASTM Special Technical Publication, No. 383, 1965, p. 36.
Communication dated Aug. 27, 1996 transmitting the European Patent Application Search Report.
Dinges, et al, "Computer-unterstutzte Optimierung des Vulkanisationsprozesses", 993 Kautschuk+Gummi Kunststoffe 46(1993)Oktober, No. 10, Heidelberg, DE, pp. 805-811.
Deak, L., et al, "Testing and optimsing the vulcanisation process of rubber tyres", Interntl.Poly.Science Tech., 18:No.3: 26-31.
Rimondi Giovanni
Toth William James
Gordon Paul P.
Pirelli Coordinamento Pneumatici S.p.A.
Rao Sheela S.
LandOfFree
System for optimizing cure assuring quality of reversion suscept does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with System for optimizing cure assuring quality of reversion suscept, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and System for optimizing cure assuring quality of reversion suscept will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1652965