MODIFICATION OF CELLULOSIC TEXTILE MATERIALS WITH DIVINYL SULFONE PRECURSORS

• Main Authors: PAUL I. LINDEN, GIULIANA C. TESORO
• Format: Patent
• Language: English
• Published: 13.04.1971
• Subjects: CHEMISTRY; COMPOSITIONS BASED THEREON; DERIVATIVES THEREOF; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR; HETEROCYCLIC COMPOUNDS; LAUNDERING; MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS; METALLURGY; ORGANIC CHEMISTRY; ORGANIC MACROMOLECULAR COMPOUNDS; POLYSACCHARIDES; 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

The water resistance and dimensional stability of polymers containing active hydrogen atoms are improved by crosslinking said polymer with a polyfunctional sulphone of formula <FORM:0985318/C3/1> where R, R1, R11 and R111 are hydrogen or alkyl groups containing 1 to 5 carbon atoms and Y is a polar residue derived from a reagent of weak nucleophilic character (cation of a weak base or anion of a strong acid) by reacting the sulphone with the polymer in the presence of a solvent at a temperature below the boiling point of the solvent and in the presence of an alkaline catalyst for the reaction, the polymer being contacted with the sulphone and catalyst sequentially. The polymer may be contacted with the sulphone before or after contacting with the catalyst. Specified polymeric materials are cellulose, cellulose esters, starch, polyvinyl alcohol and keratin. Specified alkaline catalysts are alkali metal hydroxides, carbonates, alkoxides, phosphates and silicates, and quaternary ammonium hydroxides. Many suitable sulphones are specified and examples describe the treatment of (I) cotton fabric, (V) partially saponified polyvinyl acetate, (VI) polyvinyl alcohol, (VII) corn starch and (VIII) polyvinyl alcohol yarn with SO2(C2H4SSO3Na)2; (II) viscose rayon fabric with SO2(C2H4SSO3Na)2; (III) cotton fabric with SO2(C2H4N+C5H5)22Cl-\h and (IV) cotton fabric with SO2(C2H4OSO3Na)2; and (IX) the treatment of cotton fabric impregnated with corn starch or polyvinyl alcohol with SO2(C2H4N+C5H5)22Cl- or SO2(C2H4SSO3Na)2.ALSO:The water resistance and dimensional stability of textile materials made of or impregnated with polymers containing active hydrogen atoms are improved by crosslinking the polymers with a poly-functional sulphone of formula <FORM:0985318/D1-D2/1> where R, R1, R11 and R111 are hydrogen or alkyl groups containing 1 to 5 carbon atoms and Y is a polar residue derived from a reagent of weak nucleophilic character (cation of a weak bore or anion of a strong acid) by reacting the sulphone with the polymer in the presence of a solvent at a temperature below the boiling point of the solvent and in the presence of an alkaline catalyst for the reaction, the polymer being contacted with the sulphone and catalyst sequentially. The polymer may be contacted with the sulphone before or after contacting with the catalyst. The fabric may be of cotton, viscose rayon, polyester, polyamide, acrylic or polyvinyl alcohol, or may be impregnated with starch or polyvinyl alcohol. Specified alkaline catalysts are alkali metal hydroxides, carbonates, alkoxides, phosphates and silicates, and quaternary ammonium hydroxides. Many suitable sulphones are specified and examples describe the treatment of (I) cotton fabric and (II) viscose rayon fabric with SO2 (C2H4SSO3Na)2, (III) cotton fabric with SO2 (C2H4N+C5H5)2 2C1-and (IV) cotton fabric with SO2 (C2H4OSO3Na)2; and (IX) the treatment of cotton fabric impregnated with polyvinyl alcohol or corn starch with SO2 (C2H4SSO3Na)2 or SO2 (C2H4N+C5H5)2 2C1-.