Cuprammonium Rayon (Cupro)
category
Cuprammonium rayon (Cupro) is produced by dissolving cellulose (cotton linters) in Schweizer's reagent [Cu(NH₃)₄](OH)₂, then regenerating via wet spinning. Known for silk-like luster, fine denier capability, and superior dyeability, though production limited due to complex copper recovery requirements.
Role
A premium regenerated cellulose fibre with unique properties and sustainable credentials, primarily produced by Asahi Kasei (Bemberg brand) for luxury apparel linings and specialty textiles.
Subtopics
- Cupro Manufacturing Process and Chemistry Cupro process: (1) purified cotton linters (99.5% α-cellulose) dissolved in Schweizer's reagent [Cu(…
- Cupro Structure and Properties Cupro properties: cellulose II structure, crystallinity 40-50%, DP 350-450, tenacity 1.7-2.2 g/den (…
- Cupro vs. Viscose and Other Regenerated Fibres Versus viscose: Cupro offers superior luster (close to silk), finer denier capability, smooth circul…
- Cupro Sustainability and Environmental Profile Sustainability aspects: uses cotton linters (waste from cotton ginning—otherwise discarded or low-va…
- Cupro in Garment Linings and Interfacings Lining applications (60% of Cupro use): suit jackets, coats, dresses, skirts, and luxury garment lin…
- Cupro in Apparel and Fashion Textiles Fashion applications: luxury blouses and dresses (silk-like drape at lower cost), knitwear (softness…
- Cupro in Technical and Specialty Textiles Technical applications: medical textiles (surgical gowns, drapes—breathability, comfort, biodegradab…
- Cupro Dyeing and Finishing Processes Cupro dyeing: excellent affinity for reactive dyes (bright, deep shades with 80-90% exhaustion), dir…
- Cupro Blends and Combinations Common blends: Cupro/polyester (60:40 to 40:60 in linings—improves strength, reduces cost while reta…
- Cupro Market and Future Developments Market status: global production ~50,000 tonnes annually (98% Asahi Kasei in Japan, small production…