A polyamide (preferably nylon 66) partially oriented feed yarn contains a small amount of branching agent and has an elongation between 45 and 150%. The feed yarn can be textured by the friction twist process to yield a textured yarn having crimp development similar to yarn textured by the much more...http://www.google.es/patents/US4721650?utm_source=gb-gplus-sharePatente US4721650 - Partially oriented nylon yarn and process
