Abstract:
A novel adhesive for sealing or joining sheets or films of regenerated cellulose or fiber-reinforced regenerated cellulose comprises a fluid, organic solvent solution having a solute comprising a film-forming polymeric polyisocyanate, and a curing agent for the polyisocyanate including a plasticizer ingredient, such as a polyol or a reaction product of a polyol with ethylene oxide or the like, and a surfactant ingredient, such as a fatty acid partial ester of sorbitan. The coating composition may be used to seam sheets of regenerated cellulose or paper-reinforced regenerated cellulose into tubular form or in forming cemented end closures on tubes of regenerated cellulose or paperreinforced regenerated cellulose. The adhesive composition is preferably applied in a very thin film, allowed to penetrate into the regenerated cellulose substrate, and cured by heating at an elevated temperature, e.g. 300*-320* F., for about 20-30 sec., more or less.
Abstract:
TUBULAR REGENERATED CELLULOSE FILMS SUITABLE FOR USE AS SAUSAGE CASINGS ARE PREPARED BY INCORPORATING A SINGLE VEGETABLE OR ANIMAL FATTY OIL OR MINERAL OIL IN VISCOSE AND EXTRUDING THE RESULTING MIXTURE INTO CONVENTIONAL COAGULATION AND REGENERATION AND WASH BATHS. THE OIL IS ADDED IN AN AMOUNT RANGING FROM ABOUT 0.1-12% BASED ON THE WEIGHT OF CELLULOSE AND IS EMULSIFIED INTO THE VISCOSE TO PRODUCE OIL DROPLETS IN THE CELLULOSIC CASING HAVING INDIVIDUAL PARTICLE SIZES LESS THAN 0.1 MM. IN DIAMETER. CELLULOSIC SAUSAGE CASINGS HAVING AN OIL CONTENT AND PARTICLE SIZE IN THE RANGE SPECIFIED ARE SOFT AND FLEXIBLE AND MAY BE SHIRRED AT MOISTURE CONTENTS RANGING FROM ABOUT 5% TO ABOUT 20% WITHOUT THE NECESSITY OF ADDING ADDITIONAL MOISTURE TO THE SHIRRED PRODUCT, OR USING SHIRRING LUBRICANT DURING SHIRRING.
Abstract:
Simple and complex unsaturated compounds are prepared by decomposition of certain xanthate ester - Lewis acid complexes. Xanthate esters of the form: WHERE R is an alkyl function having at least one H in a position alpha to the R - O bond, (C)n is a linear alkyl function either substituted or unsubstituted, with n 1 - 3, X has a basicity greater than the FUNCTION AND COMPRISES A C or S containing functional group having at least one double or triple bond to a hetero atom, the functional group being connected to (C)n through C or S; are reacted with Lewis acids, either neat or in non-protonic nonaqueous solvents, to yield a Lewis acid complex of the esters. The Lewis acid - xanthate ester complex is decomposed by admixture with water or a protonic non-aqueous solvent, e.g. methanol, ethanol, etc., glycol, cellosolve, liquid ammonia, lower alkyl primary or secondary amines, aniline, etc., to yield an unsaturated derivative of R.
Abstract:
A NOVEL FIBROUS CASING FOR PACKAGING SAUSAGES AND SIMILAR PRODUCTS COMPRISES A SATURATING TISSUE IMPREGNATED WITH A MELT-EXTRUDED FILM OF A POLYVINYL ALCOHOL RESIN. THE CASING IS PREFERABLY PREPARED BY MELT EXTRUDING A PLASTICIZED, FILM-FORMING POLYVINYL ALCOHOL RESIN TO FORM A FILM AND, SIMULTANEOUS WITH OR SUBSEQUENT TO THE EXTRUSION STEP, IMPREGNATING AND COATING A SATURATING TISSUE WITH THE EXTRUDED FILM. THE RESIN FILM THEN MAY BE, AND PREFERABLY IS, REACTED WITH A SUITABLE CROSS-LINKING AGENT, VIZ FORMALDEHYDE, TO RENDER IT LESS SENSITIVE TO WATER AND OTHER SOLVENTS. RESIN IMPREGNATED SATURATING TISSUE MAY BE FORMED DIRECTLY INTO A TUBULAR CASING OR INITIALLY MAY BE PRODUCED AS A SHEET WHICH IS SLIT TO APPROPRIATE WIDTH AND THEN FORMED INTO A TUBULAR CASING IN A SEPARATE SEAMING OPEATION. CASINGS ARE PREFERABLY FORMED USING LONG FIBER HEMP PAPERS AS THE SATURATING TISSUES AND USING FILMFORMING POLYVINYL ALCOHOL RESINS HAVING A HYDROXYL GROUP D.S. OF AT LEAST ABOUT 60%, AND MORE PREFERABLY IN THE RANGE OF FROM ABOUT 95% TO ABOUT 99.99%.
Abstract:
Simple and complex unsaturated compounds are prepared by decomposition of certain xanthate esters, Xanthate esters of the form: WHERE R is an alkyl function having at least one H in a position alpha to the R - O bond, (C)n is a linear alkyl function either substituted or unsubstituted, with n 1 - 3, X has a basicity greater than the FUNCTION AND COMPRISES A C or S containing functional group having at least one double or triple bond to a hetero atom, the functional group being connected to (C)n through C or S; will decompose upon heating in water or in a protonated non-aqueous solvent, e.g. methanol, ethanol, etc., glycol, cellosolve, liquid ammonia, pyridine, lower alkyl amines, aniline, etc., to yield an unsaturated derivative of R.
Abstract:
Polymeric alcohol derivatives consisting of polymeric alcohol sulfonic acids containing S-xanthogenate ester substituents of the general formula AND SALTS OF SAID POLYMERIC ALCOHOL SULFONIC ACIDS PREPARED BY REACTION OF A SULTONE, E.G., 1,3-PROPANE SULTONE, WITH THE FREE ACID FORM OR A SALT OF A POLYMERIC ALCOHOL XANTHOGENATE ESTER, E.G., CELLULOSE XANTHATE. The novel omegasulfonated polymeric alcohol derivatives have physical and chemical properties, e.g., solubility, viscosity, reactivity with cross-linking agents, and an anionic character, adapting them for advantageous use in a wide range of applications. The derivatives find particular utility as antistatic and antisoiling agents which are effective when applied to a wide range of soil receptive substrates, e.g., natural and synthetic textiles.