Improvements in or relating to the production of regenerated celluose staple fibres

摘要

Staple fibres of regenerated cellulose are made by spinning viscose into an acid regenerating bath containing zinc salts, stretching the filaments obtained in a bath of hot, acid, aqueous liquor containing a dispersing agent and cutting the filaments into staple fibres; presence of the dispersing agent prolongs the life of the cutters. Suitable dispersing agents are amine/ethylene oxide condensates having average molecular weights of between 500 and 1,000 and corresponding to the general formula:- where R is hydrogen or an alkyl radical and x and y are integers, and the monolauryl ether of polyethylene glycol. The viscose or the regenerating bath may contain a modifier such as polyethylene glycol.