Flame-resistant molded cellulose bodies produced according to a direct dissolving method

US10443153B2 · kind B2 · utility

Assignee

• smartpolymer GmbH · DE

Inventors

• Frank-Günter Niemz · Rudolstadt, DE
• Marcus Krieg · Weimar, DE
• Michael Mooz · Ziegenrück, DE
• Ralf Bauer · Neckarsulm, DE
• Sabine Riede · Orlamünde, DE

Key dates

• Filing date: Mar 5, 2015
• Grant date: Oct 15, 2019
• Expiry date: Mar 5, 2035

Classification

• Technology area (CPC D): Textiles; Paper
• CPC primary: D10B2501/00
• WIPO field: Textile and paper machines
• WIPO sector: Mechanical engineering

Abstract

The invention relates to molded cellulose bodies, in particular fibers, filaments, directly spun nonwovens, films, or foams which have flame-resistant properties. The fibers and filaments can be further processed as textiles into yarns, wovens, knitted fabrics, and nonwovens. The molded bodies are produced from solutions of cellulose and melamine cyanurate or cellulose and crosslinked or partially crosslinked melamine resin particles in an organic solvent. The melamine cyanurate or the melamine resin particles provide the molded cellulose bodies with flame-retardant properties. The molded cellulose bodies made of cellulose and melamine cyanurate or melamine resin particles can further contain flame retardants, in particular flame retardants which act synergistically, in a particulate form. The obtained textile fibers and nonwoven materials have a soft touch and can be processed or finished as filaments or yarns on conventional textile machines.