Antistatic fiber containing chain-extended tetrols based on diamines

Abstract

Abstract It has been suggested that antistatic properties of fibers of polyamide could be improved by dispersing in the polyamide a small proportion of a reaction product of a tetrol compound represented by the formula: WHERE A'' is a difunctional radical from a hydrocarbon containing 1 to 30 carbon atoms. However, with incorporation of this antistatic additive in the polyamide, serious problems have been encountered in meltspinning due to the frequent occurrence of ''''nubs'''' or enlarged places in the extruded polyamide filament. It has now been found that the occurrence of said nubs in the antistatic polyamide fiber can be greatly reduced by dispersing in the polymer an additional small proportion of a hindered phenol represented by the formulae: IN WHICH X HAS A VALUE OF FROM 1 TO 6 AND Y HAS A VALUE OF FROM 6 TO 30; AND IN WHICH R is WHEREIN X'' HAS A VALUE FROM 1 TO 6 AND Y'' HAS A VALUE OF 1 TO 6. When the term ''''alkyl'''' is qualified by the designation ''''(lower)'''', there is intended a branched or straight chain hydrocarbon of from 1 to about 6 carbon atoms. Preferably, the phenol complound is used with at least 0.1% by weight, based on the weight of the antistatic additive, of a sulfur compound of the formula: WHEREIN R'''' is an alkyl radical containing 8 to 18 carbon atoms and n is 1 to 3. WHERE A, B, C, D, E, F, G, AND H ARE EACH A WHOLE NUMBER AND A is a difunctional radical from a hydrocarbon containing 1 to 13 carbon atoms, said tetrol compound having a molecular weight between about 4,000 and about 50,000, and at least one compound selected from the group consisting of diepoxides and compounds which yield the following divalent radicals:

Inventors

• 👤 Lamberto Crescentini
• 👤 Rodney Lee Wells

Bibliographic Details