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Production of Cupro fibres

Production of Cupro fibres Cellulose is dissolved in a spinning solvent containing ammonia and copper salts (sulphate i.e. chloride), while cooling. The finished spinning solution contains 4-11 % cellulose, 4-6 % copper and 6-10 % ammonia. In a typical cuprammonium process, a freshly made aqueous solution of copper hydroxide (formed from copper sulphate and caustic
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This page has been updated 23.04.2021