Cellulose nitrate resins properties

Properties molding resin, molding cellulose nitrate polyether reinforced filled... 

Several other resins can be blended with alkyd resins to introduce desired improvement in properties, e. g. cellulose nitrate, chlorinated rubber, phenolics, amino resins or silicons oils. Vinyl monomers like styrene can be added to alkyd resins along with initiator to get a tougher resin with shorter drying times and lighter colour. 

Since cellophane cannot melt, it is not heat-sealable. The many hydroxyl groups that it contains make it sensitive to water. It will not dissolve, but its properties can change markedly on exposure to moisture. For both these reasons, cellophane used in packaging is generally coated. Common types of coatings include vinylidene chloride-acrylonitrile copolymers, polyolefins, and mixtures of cellulose nitrate, wax, and resin. It may also have plasticizers added to improve its flexibility. 

Propanol [71-23-8] (1-propanol) is a colorless liquid that is soluble in water and miscible with organic solvents. It has better dissolution properties than ethanol for fats and oils, and dissolves polar resins in the same way as ethanol. Cellulose nitrate and poly(vinyl acetate) are, however, almost insoluble. For economic reasons propanol is of only limited use as a solvent, and is a starting material for esters. 

Diisobutyl ketone (DIBK) is a colorless, low-viscosity liquid, consisting of a mixture of two isomeric dimethyl heptanones (2,6-dimethyl-4-heptanone [108-83-8] and 2,4-dimethyl-6-heptanone [19549-80-5]). It is practically immiscible with water, but is miscible in all proportions with all common organic solvents. It is a high boiler with good solvency properties for cellulose nitrate, vinyl resins, waxes, and many natural and synthetic resins. 

Cyclohexyl acetate [622-45-7] is very slightly miscible with water, but completely miscible with common organic solvents. Its solvency properties are comparable to those of amyl acetate. Cyclohexyl acetate dissolves oils, fats, resins, waxes, cellulose nitrate, cellulose tripropionate and acetobutyrate, alkyd resins, unsaturated and saturated polyester resins, phenolic resins and aminoplasts, poIy(vinyI chloride), vinyl chloride copolymers, poly(vinyl acetate), poly(vinyl ethers), epoxy resins, and acrylic resins, basic dyes, blown oils, crude rubber, metallic soaps, shellac, and bitumen. 

Nitropropane [ 79-46-9] is a colorless, nonhygroscopic liquid with a mild odor. It dissolves cellulose nitrate, cellulose ethers, alkyd resins, chlorinated rubber, poly(vinyl acetate), vinyl chloride copolymers. Poly(vinyl chloride), colophony, polyacrylonitrile, waxes, rubber, and shellac are insoluble. It is used as a cosolvent in paints to improve pigment wetting, flow properties, and electrostatic processing it also reduces the paint drying time. 2-Nitropropane is classified as carcinogenic. 

Chem. Descrip. Acetyl tributyl citrate CAS 77-90-7 EINECS/ELINCS 201-067-0 Uses Plasticizer for Indirect and direct food contact applies., PVC toys, cellulose nitrate films, aerosol hair sprays, dairy prod, cartons, drink bottle caps, food Jar caps, sol n. coatings for foil and paper milling lubricant for aluminum foil or sheet steel for use in cans for beverage and food prods. food pkg. adhesives, coatings, paper, cellophane Features Produces resins with exc. heat stability and low toxicity Regulatory FDA 21 CFR 172.515,175.105,175.300,175.320,175.380, 175.390,176.170,176.180,177.1200,177.1210,178.3910,181.27 Properties APHA 30 max. color, essentially odorless insol. in water m, w. 

Properties Solid m.w. 687.07 dens. 1.055 (20 C) m.p. 63 C ref. index 1.513 Uses Tackifier resin used in hot-melt and pressure-sensitive adhesives, specialty nitrocellulose lacquers, printing inks plasticizer for PVC, cellulose nitrate Manuf./Distrib. Hercules http //www.herc.com Trade Name Synonyms Cellolyn 21-E [Eastman http //www.eastman.com]... 

Synonyms Hexadecanoic acid isooctyl ester Empirical C24H48O2 Formula C8H17OOCC15H31 Properties Clear liq. sol. in most org. soivs. m.w. 368.72 dens. 0.863 (20 C) m.p. 6-9 C b.p. 228 C (5 mm) flash pt. (COC) 213 C Toxicology LD50 (IP, mouse) 200 mg/kg Precaution Combustible Uses Secondary plasticizer for synthetic resins, extrusion aid plasticizer for PS, cellulose nitrate, ethyl cellulose Manuf/Distrib. ChemService http //www.chemservice.com, Inolex http //www.inolex. com... 

Dicyclohexyl phthalate (DCHP) n. C6H4 (COOC6Hii)2. a plasticizer for PVC and many other resins. It imparts good electrical properties, low volatility, low water and oil absorption, and resistance to extraction by hexane and gasoline. In vinyls DCHP is usually combined with other plasticizers. In cellulose nitrate, polystyrene, poly-methyl methacrylate, and ethyl cellulose it serves as a primary plasticizer. 

Ethylene glycol monoethyl ether (cellosolve, ethyl cellosolve) n. A solvent for cellulose nitrate, phenolic, alkyd, and epoxy resins. It is colorless, nearly odorless, has a low evaporation rate, and imparts good flow properties to coatings. 

PMMA was not the only type of polymer to be employed as a denture base material. Other synthetic polymers have also been introduced, including bakelite (phenol-formaldehyde) cellulose nitrate, nylon, epoxy resins, vinyl polymers (polyvinyl chloride and polyvinyl acetate) and polystyrene. Polycarbonates infiltrated with glass filler particles have also been used as denture based materials and, due to their filler content, have shown nine times higher impact properties than PMMA. Yet these materials have the disadvantage of more difficult molding than acrylics, since injection molding is required [97, 98]. 

Ethyl lactate is a colorless and olmost odorless liquid, which, upon evaporotion, will sometimes develop a disagreeable odor. This is owing to the iactides, or inner anhydrides, contained in the lactic acid mode by fermentation. It is miscible with water, alcohols, ketones, esters, hydrocarbons and oils. Ethyl lactate will dissolve cellulose acetate ond nitrate ond many of the ethers of Cellulose. It is also a solvent for basic dyes, alkyd resins, kauri, manila, pontionac, rosin, shellac and vinyl resins. Ethyl lactate has high solvent power and equally high tolerance far nonsolvents and diluents. These exceptional properties are accounted for by the existence of both an alcohol and an ester group in its molecule. 

Industrial applications of plastic materials were limited to the use of natural resins until the accidental discovery of nitrocellulose. A semisynthetic resin formed by the nitration of cellulose (from cotton), nitrocellulose exhibited many of the properties of thermoplastic polymers and eventually became the basis of the celluloid industry. In 1884, George Eastman, founder of the Eastman Kodak Company, began to mechanically produce celluloid in thin flexible sheets through a process invented by Belgian chemist Leo Hendrik Baekeland. This celluloid film became the basis for the photography industry. 

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