Stock material or miscellaneous articles – Impregnated naturally solid product
Patent
1996-11-20
1998-10-06
Wilson, Donald R.
Stock material or miscellaneous articles
Impregnated naturally solid product
428413, 428473, 8 941R, 8 9419C, C14C 900
Patent
active
058174281
ABSTRACT:
A process for the formation of epoxy resin/hide composite materials is provided in which the components of epoxy resin systems (epoxy resin and hardener) are mixed at a temperature lower than that at which significant reaction between these reagents occurs. The epoxy resin system components are mixed into solution in an aprotic solvent, which prepares the epoxy resin system for impregnation into the hide. The hide, presoaked in an aprotic solvent for a period of time, is next placed in the epoxy resin system/aprotic solvent solution for a period of time, during which the hide is impregnated with the epoxy resin reactants. Once impregnated, the hide is removed from the solution, and the excess epoxy resin material is removed from the hide surface. Thereafter, the solvent may be evaporated from the system, although this step is optional. The impregnated hide is further processed at an elevated temperature (but at a temperature lower than that at which hide decomposes significantly--105.degree.-160.degree. C.) and at an elevated pressure, by such means as a hot press or autoclave, to ensure complete impregnation of the hide and to effect an in situ reaction or cure of the epoxy resin impregnated in the hide. Resultant resin/hide products are tough, impact-resistant and have very low moisture vapor transmission properties.
REFERENCES:
patent: 3066997 (1962-12-01), Neher et al.
patent: 3103447 (1963-09-01), Lowell et al.
patent: 3231420 (1966-01-01), Lowell et al.
patent: 3441365 (1969-04-01), Lowell et al.
patent: 3486925 (1969-12-01), Hoffman
patent: 3795533 (1974-03-01), Gauri
patent: 5183845 (1993-02-01), Parkinson
Friese, H.H. et al., "Waterproofing of Fashion Leathers", Leder-Haeutemarkt 38 (32), 5-6, 8-10 (1986).
Harris, E.H., "Graft Polymerization. III. Some Properties of teh Leather Obtained . . . Onto Chrome-Taned Nigerian Hairsheep", J. Am. Leather Chem. Assoc., 69, 182 (1974).
Jordan, E.F. et al., "Polymer-Leather Composites. I. Process and Location Study . . . by Polymerization into Chrome-Tanned Cattlehide", J. Appl. Polym. Sci. 25, 2621-2647 (1980).
Jordan, E.F., Jr. et al., "Polymer-Leather Composites. II. Kinetics of the Deposition . . . into Chrome-Tanned Cattlehide", J. Appl. Polym. Sci. 25, 2775-2776 (1980).
Jordan, E.F., Jr. et al., "Polymer-Leather Composites v. Preparative Methods . . . Polymer-Leather Composite Materials", Polymer Applications of Renewable-Resource Materials (Polymer Science and Technology, vol. 17) (C.E. Carraher, Jr. and L.H. Sperling, Eds.) (Plenum Press, New York, 1983) pp. 407-452.
Korn, A.H. et al., "Graft Polymerization. I. Preliminary Results with Acrylate Esters", J. Am. Leather Chem. Assoc. 67, 111 (1974).
Kronick, P.L. et al., "Viscoelasticity of Calf Hide Impregnated with Radiation-Polymerized Polyhydroyethyl Methacrylate", Renewable Resource Materials (C.E. Carraher, Jr. and L.H. Sperling, Eds.) (Plenum Press, New York, 1986) pp. 235-250.
Kronick, P.L. et al., "Dynamic Mechanical Properties of Polymer-Leather Composites", J. Appl. Phys. 30, 3095-3106 (1985).
Rao, K.P. et al., "Characterization of the Collagen-Vinyl . . . II. Infrared Spectra and electron Microscopy", J. Appl. Polymer Sci., 16, 975-0986 (1972).
Rao, K.P. et al., "Characterization of the Collagen-Vinyl . . . I. Solution Properties", J. Appl. Polymer Sci., a-1, 9, 3199-3212 (1971).
Fan L. T.
Schlup John R.
Kansas State University Research Foundation
Wilson Donald R.
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