Plastic and nonmetallic article shaping or treating: processes – With printing or coating of workpiece
Patent
1992-10-23
1993-10-12
Tentoni, Leo B.
Plastic and nonmetallic article shaping or treating: processes
With printing or coating of workpiece
264202, 264203, 264204, 2642108, 264233, 4273855, D01F 400, D01F 402
Patent
active
052522776
ABSTRACT:
This invention relates to novel processes for preparing polypeptide solutions and spinning them into fibers. The process involves dissolving a polypeptide in a solvent system comprising lithium thiocyanate (LiSCN) and a liquefied phenol selected from the group consisting of phenol, m-chlorophenol, m-fluorophenol, and m-bromophenol or mixtures thereof. The solutions may be spun using certain wet spinning and dry-jet wet spinning methods. The process is especially useful for making silk fibroin fibers.
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E. I. Du Pont de Nemours and Company
Tentoni Leo B.
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