METHOD OF PREPARING SIZE

• Main Author: KARLSSON; ALF HUGO
• Format: Patent
• Language: English
• Published: 08.06.1976
• Subjects: ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; ADHESIVES; CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; CHEMICAL PAINT OR INK REMOVERS; CHEMISTRY; COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS; COMPOSITIONS BASED THEREON; CORRECTING FLUIDS; DERIVATIVES THEREOF; DYES; FILLING PASTES; IMPREGNATING OR COATING OF PAPER; INKS; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ORGANIC MACROMOLECULAR COMPOUNDS; PAINTS; PAPER NOT OTHERWISE PROVIDED FOR; PAPER-MAKING; PASTES OR SOLIDS FOR COLOURING OR PRINTING; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; POLISHES; POLYSACCHARIDES; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; PRODUCTION OF CELLULOSE; PULP COMPOSITIONS; TEXTILES; THEIR PREPARATION OR CHEMICAL WORKING-UP; THEIR RELEVANT APPARATUS; TRANSPORTING; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS; USE OF MATERIALS AS ADHESIVES; USE OF MATERIALS THEREFOR; WOODSTAINS

1465442 Modified carboxymethyl cellulose SCA DEVELOPMENT AB 15 May 1975 [17 May 1974] 20632/75 Heading C3A A modified carboxymethyl cellulose is prepared by reacting cellulose with a silicate, hydrogen peroxide and sodium monochloroacetate in the presence of ions of a metal which can exist in at least two oxidation states, the ions being in the lowest of them. Preferably the cellulose is alkali cellulose, the silicate sodium meta-silicate (particularly waterglass) and the metal ions supplied by ferrous chloride. The structure of the product is not clear, the nature of the silicon incorporation being uncertain. It is, however, more readily soluble than normal carboxymethyl cellulose and has good adhesive and film-forming properties.