ELASTOMERIC FIBRES, STRUCTURES FASHIONED THEREFROM AND ELASTOMERIC FILMS

摘要

A B S T R A C TELASTOMERIC FIBERS, STRUCTURES FASHIONED THEREFROMAND ELASTOMERIC FILMSAn elastomeric fibre or film prepared from acomposition comprising at least one block copolymercontaining at least two polymeric blocks containingpredominantly monoalkenyl aromatic hydrocarbon monomerunits having a weight-average molecular weight withinthe range from 4,000 to 50,000 and at least one poly-meric block containing predominantly hydrogenatedconjugated diolefin monomer units having a weight-average molecular weight within the range from 10,000to 200,000, a relatively low molecular weight polymerselected from the Group consisting of anionic styrenehomopolymers, alpha-methylstyrene homopolymers,hydrogenated styrene, copolymers of alpha-methylstyreneand styrene and mixtures thereof and may contain a wax.In particularly preferred embodiments, the elasto-meric fibre or film will contain at least one A-B-Atriblock copolymer and an A-B' diblock copolymer. Ineven more preferred embodiments, the elastomeric fibresor films will contain at least two A-B-A triblockcopolymers and at least one A-B' diblock copolymer.