Tham khảo tài liệu 'materials handbook 15th ed - g. brady_ h. clauser_ j. vaccari (mcgraw-hill_ 2002) episode 12', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | 880 SORBITOL mixture which consists of a suspension of solid grains of the resin or gum in the liquid plasticizer. The plasticizer is in that sense a solvent but unlike an ordinary solvent the plasticizer remains with the cured resin to give added properties to the materials such as flexibility. Dibutyl phthalate a water-white oily liquid of specific gravity boiling point 644 F 340 C and composition C16H22O4 is a plasticizer for Buna N rubber and polyvinyl chloride plastics. Monoplex DOA of Rohm Haas Co. used to give flexibility to vinyl resins at low temperatures is diisooctyl adipate. It has a flash point of 400 F 204 C and freezing point of 131 F 55 C . Diiso-nonyl phthalate and diisodecyl phthalate are high-molecular-weight plasticizers for flexible polyvinyl chloride. An aprotic solvent is a solvent that contains no hydrogen such as selenium oxychloride a liquid of composition SeOCl2. Such solvents are used in electronic applications where the energy deflection of free protons would be undesirable. Phosphorus oxychloride POCl3 is an aprotic solvent used with neodymium in liquid lasers to give high light-beam efficiency. SORBITOL. A hexahydric alcohol CH2OH 5CHOH which occurs naturally in many fruits but is now made on a large scale by the direct hydrogenation of corn sugar or dextroglucose. It is a white odorless crystalline powder of faint sweet taste. It melts at 208 F C and is easily dissolved in water. It is used as a humectant softener and blending agent for the production of synthetic resins plasticizers and drying oils and as an emulsifier in cosmetics and pharmaceuticals. It is digestible and nutritive and is used in confectionery to improve texture and storage life by inhibiting crystal growth of the sugar and in dietary foods as a substitute for sugar. Sorbo and Arlex of ICI Americas Inc. are water solutions of sorbitol. Neosorb is a granular form from Roquette Corp. that is used for tabletting drugs. Mannitol is an isomer form of the .
