Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From reactant having at least one -n=c=x group as well as...
Patent
1996-09-27
1998-05-26
Truong, Duc
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From reactant having at least one -n=c=x group as well as...
528 49, 528 52, 528310, 524589, 524590, 524871, 524873, 2642893, 264184, C08G 1808
Patent
active
057566356
ABSTRACT:
The present invention relates to a process for obtaining PAI fibres by spinning PAI in solution and to the fibres thus obtained. They are obtained by dry or wet spinning into dimethylalkyleneurea followed by removal of the solvent and overdrawing at high temperature. The yarns and fibres obtained are produced from PAI based on tolylene or meta-phenylene diisocyanate, and on an aromatic acid anhydride and/or an aromatic dianhydride, and optionally on one or a number of diacid compounds. They exhibit an outstanding thermomechanical behavior and make it possible to gain access to very low linear densities.
REFERENCES:
patent: 3673160 (1972-06-01), Buisson et al.
patent: 5095070 (1992-03-01), Barthelemy
Michaud Philippe
Perier Marie-Eve
Russo Jean
Cole Watson
Rhone-Poulenc Fibres
Truong Duc
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