HYDROPHOBIC CELLULOSIC FIBER

• Main Authors: JANGAM, Kundan Sambhaji, WAGHMARE, Nilesh Guruling, JUIKAR, Vishvajit Chandrakant
• Format: Patent
• Language: English; French; German
• Published: 12.06.2024
• Subjects: ANIMAL AND VEGETABLE OILS, FATS, FATTY SUBSTANCES AND WAXES; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBONFILAMENTS; CANDLES; CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS,THREADS, FIBRES, BRISTLES OR RIBBONS; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; DERIVATIVES THEREOF; DETERGENT COMPOSITIONS; DETERGENTS; FATTY ACIDS THEREFROM; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR; LAUNDERING; METALLURGY; NATURAL OR ARTIFICIAL THREADS OR FIBRES; ORGANIC MACROMOLECULAR COMPOUNDS; POLYSACCHARIDES; RECOVERY OF GLYCEROL; RESIN SOAPS; SOAP OR SOAP-MAKING; SPINNING; TEXTILES; THEIR PREPARATION OR CHEMICAL WORKING-UP; TREATMENT OF TEXTILES OR THE LIKE; TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS,FABRICS, FEATHERS, OR FIBROUS GOODS MADE FROM SUCH MATERIALS; USE OF SINGLE SUBSTANCES AS DETERGENTS

The present disclosure relates to a continuous process for preparing hydrophobic regenerated cellulosic fiber. Said process comprises treating never-dried cellulosic fiber with a hydrophobic composition comprising 0.05-2.5 weight % of an alkyl ketene dimer based on weight of cellulose. The alkyl ketene dimer has a formula I: wherein both R1 and R2 are hydrocarbon groups having 8-40 carbon atoms and which can be both, saturated or unsaturated, straight-chained or branched. The hydrophobic composition further comprises 0.02-1 weight % of a cationic polymer based on weight of cellulose. After treatment with the hydrophobic composition, the treated fiber is subjected to a drying step to form hydrophobic regenerated cellulose fiber.