Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – At least one aryl ring which is part of a fused or bridged...
Patent
1988-05-23
1991-04-02
Ivy, C. Warren
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
At least one aryl ring which is part of a fused or bridged...
524487, 524570, 524585, 264126, 264119, C08L 2304, C08K 501
Patent
active
050047787
ABSTRACT:
An ultrastretchable polymer material is prepared starting from polyolefine particles with a low entanglement density and a weight average molecular weight (M.sub.w) higher than 400,000, the particles being densified to a coherent material together with a process auxiliary material at an elevated temperature, but below the melting point of the pure polyolefine.
From this ultrastretchable material, objects with a high tensile strength and a high modulus can be produced by stretching it, for instance, at a temperature which is at most 70.degree. C. below the temperature at which the polyolefine melts under the prevailing conditions, if desired after removal of the process auxiliary agent present in it.
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patent: 4323531 (1982-04-01), Bradley et al.
patent: 4348350 (1982-09-01), Meier et al.
Polymer Communications, 26:258-259 (1985) (Smith et al).
Polymer Communications, Drawing of Virgin Ultrahigh Molecular Weight Polyethylene: An Alternative Route to High Strength Fibres; Paul Smith, Henri D. Chanzy and Bruno P. Rotziner, E. I. Du Pont de Nemours and Company, Inc., Central Research and Development Department, Experimental Station, Wilmington, Del. 19898, U.S.A. (Received Apr. 16, 1985); vol. 20, No. 9, Sep., 1985.
Makromil. Chem. 180, 2983-2986, (1979) "Ultrahigh-Strength Polyethylene Filaments by Solution Spinning/Drawing, 2a, Influence of Solvent on the Drawability" by Paul Smith.
Bastiaansen Cornelis W. M.
Kirschbaum Robert
Waagen Geert N.
Ivy C. Warren
Stamicarbon B.V.
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