Snia Viscosa Societa Nazionale Industria Applicazioni Viscosa S.p.a.

Snia Fibre Spa

Antonio Salan

Aldemaro Ciaperoni

Giorgio Cazzaro

Antonino Cavallaro

Giancarlo Matera

Francesco D'Andolfo

Alberto Cappelli

A linear block copolymer of regular structure, comprising polyamide and polyethylene glycol blocks. Two polyamide blocks (A) are bound through an intermediate polyethylene glycol block (B) according to a structural scheme (A-B-A). Fibers exhibiting a high moisture absorption strong mechanical properties and a high dyeability. Textile manufactured goods comprising said fibers. A process to obtain said block copolymer, through the preparation of a polyamide (A) and a polyethylene glycol (B), and condensation of polyamide (A) and polyethylene glycol (B) so as to obtain a (A-B-A) structure.

Polyamide polyethylene glycolpolyamide block copolymer

A method for preparing flame-resisting modacrylic fibers containing pentaent antimony oxide is described wherein the antimony oxide is suspended in a mixture of water and an organic solvent selected from dimethylformamide and dimethylacetamide and the suspension is then mixed with the viscose solution of the modacrylic polymeric material to be spun. The process yield high luster, flame-resisting modacrylic fibre of the 'L.O.I. uprated' type.

Process for manufacturing modacrylic fibers having high luster, thermal

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Saronno, Italy

Antonio Salan