Showing papers on "Liquid paraffin published in 1981"

Making homogeneous and fine droplet O/W emulsions using nonionic surfactants

Abstract: In many emulsion systems, creaming occurs during the first stage of emulsion breakdown. To reduce the rate of creaming, emulsions having small and uniform droplets are desirable. In this work, types and HLB of nonionic surfactants, emulsification methods, and combinations of oils and nonionic surfactants were investigated in order to make stable and homogeneous emulsions. Emulsification was attained by dissolving the surfactants in the oil phases. The addition speed and volume of water to the oil phases were important factors affecting the emulsion droplet size. The change of the solute state in the process of emulsification was observed stage by stage, and the mechanism of emulsification was elucidated. Homogeneous emulsions were formed in the HLB region, showing liquid crystalline and gel phases in the emulsifying process. The addition speed of water to the oil phase was very important in forming the liquid crystalline and gel phases. Polyoxyethylene(n)sorbitan monostearate could emulsify three kinds of oils (hydrocarbon, fatty acid ester and triglyceride). Polyoxyethylene(n)alkyl ether could emulsify hydrocarbon and fatty acid ester. Polyoxyethylene(n)-monostearate could emulsify only hydrocarbon. Surfactants with proper HLB which were soluble in the oil phase and in the presence of a very small amount of water formed a stable emulsion. The solubility state of oil and surfactant was the key to making a fine emulsion.

Electrical connector including hydrophobic gel composition

Abstract: A hydrophobic gel composition comprises an aluminium stearate, liquid paraffin and polyisobutylene. The gels are prepared by first blending together aluminium stearate and liquid paraffin. The mix is then heated to 180°-200° C. and a quantity of polybutylene preheated to 150° C. is added, after which the composition is allowed to cool slowly to ambient temperature. The compositions are particularly useful in electrical connectors.

Sliding fracture of soda-lime glass in liquid environments

Abstract: The critical load required to form a hertzian fracture in sliding is markedly influenced by the liquid environment in which sliding takes place. The presence of an active environment (water and phosphoric acid) reduces the critical load by 65 to 70%, while the presence of a less-active environment (liquid paraffin) reduces the friction and increases the critical load. It is shown that the critical load in some environments can be predicted in agreement with experimental results provided that the critical load in a certain environment is known.

Coating material for preventing adhesion of marine organism

Abstract: PURPOSE: The titled low-cost coating material, prepared by mixing a petroleum straight-run substance having a low critical surface tension with an oligomeric room temperature curing silicone rubber, and capable of preventing the adhesion of marine organisms to ships, etc. for a long term. CONSTITUTION: A coating material obtained by mixing an oligomeric room temperature curing silicone rubber (moisture curing type) with 5W20wt% either one or at least two of liquid paraffin (having a kinematic viscosity of 9W110cSt at 40°C) or petrolatam having a melting point of 45W80°C, a consistency of 80W210 at 25°C and a kinematic viscosity of 10W30cSt at 100°C which is a petroleum straight-run substance having a low critical surface tension (critical surface tension: 19W23 dynes/cm) and an organic solvent, e.g. toluene or xylene. The resultant coating material is useful for coating ships, marine structures or equipment utilizing seawater. COPYRIGHT: (C)1983,JPO&Japio

Preparation of hydrogel

Abstract: PURPOSE: To obtain a granular or spherical hydrogel of high water absorption having a sufficient gel strength, by the reverse phase water-in-oil type suspension polymerization of an α, β-unsaturated acid (alkali metallic salt) with a specific hydrocarbon oil (fat) as an anti-tack agent. CONSTITUTION: An α, β-unsaturated acid (alkali metallic salt) monomer, e.g. (meth)acrylic acid (Na salt) is subjected to the reverse phase water- in -oil type suspension polymerization in a medium, e.g., n-hexane, with a hydrocarbon oil (fat), e.g. liquid paraffin, cottonseed oil, soybean oil or lard, having a boiling point above the drying temperature of the recovery system of a hydrogel, preferably 50°C or more higher than the drying temperature and a melting point below the separating operation temperature of the hydrogel from the solvent, preferably 20°C or more lower than the separating operation temperature. The anti-tack agent may be added before or during the polymerization or at a suitable time after the completion of the polymerization. EFFECT: Special pulverizing treatment is not required, and the method is simple and economical. COPYRIGHT: (C)1982,JPO&Japio

Quantitative studies of hemidesmosomes during progressive DMBA carcinogenesis in hamster cheek-pouch mucosa.

Abstract: The present study was designed to establish whether there are changes in hemidesmosomal distribution during defined stages of chemical carcinogenesis in hamster cheek-pouch epithelium. 0.5% DMBA in liquid paraffin was applied thrice weekly to hamster pouches and tissue samples were obtained at regular intervals and assigned to hyperplastic, dysplastic and carcinomatous groups on the basis of histological criteria. Untreated pouches served as controls. Following a strict sampling regime, electron micrographs were obtained from the epithelial-connective tissue junction and, using stereological intersection counting, the relative surface area of basal plasma membrane (BPM) occupied by hemidesmosomes was estimated. In normal epithelium 40% of the BPM is occupied by hemidesmosomes. During carcinogenesis, values decrease progressively and significantly to 35% in hyperplasia, 28% in dysplasia and 13% in carcinoma. A decrease in the relative area of hemidesmosomes would therefore appear to contribute to the increased motility of epithelial cells during a connective-tissue invasion and cellular metastasis.

Effect of wettability on static drop formation from a hole in horizontal flat plate

Abstract: Effect of wettability on static drop formation cycle from a hole in a horizontal flat plate into air was studied experimentally and theoretically. Water, glycerin, kerosene and liquid paraffin were used as the liquid in the experiments, and copper, Teflon, acrylic resin and glass were used as the solid. The experimental results are classified into the following three cases. 1) Case 1, where the contact line, defined as the boundary among the three phases, is fixed. 2) Case 2, where the contact line is free to move. 3) Case 3, where the liquid wets the solid perfectly. It is found that the important factor governing the maximum stable drop volume Vmax is Bond number for Case 1, and is advancing contact angle for Case 2. A method of predicting Vmax in each case is proposed. It is revealed that the drop formation cycle for the three cases can be simulated theoretically by solving the variational problem which is derived from analysis of the potential energy of drops, using the finite element method.

Topically administrable pharmaceutical compositions containing anti-inflammatory steroids

Abstract: Pharmaceutical compositions such as ointments and creams are provided by admixture of anti-inflammatory steroids active on topical application with a liquid oily phase containing at least one oil possessing a viscosity less than 10 centistokes and in which the steroid has a solubility of at least 0.5% by weight at 25° C., the degree of unsaturation of the steroid in the liquid oily phase of the composition at 25° C., being at least 3. Examples of steroids which may be used are betamethasone, beclomethasone and clobetasol derivatives. Suitable oils include esters of mono- and dibasic aliphatic acids. The compositions may include further oils such as liquid paraffin and conventional additives used in the preparation of ointments and creams. The local anti-inflammatory effect of the steroids is maintained in such formulations but systemic side effects are decreased.

Rheological properties and applications of mesquite tree (prosopis juliflora) gum. 3. the influence of mesquite gum oh the interfacial tension between oil and water

Abstract: The influence of mesquite gum on the interfacial tension between liquid paraffin and distilled water has been studied as a function of gum concentration, pH, and added NaCl or CaCl2. The time dependence of the reduction in interfacial tension was influenced by all three variables. Diffusion to the oil-water interface was the dominant factor in the initial decrease of interfacial tension when low mesquite gum concentrations were used. Reconformation of molecules adsorbed at the oil-water interface controlled the reduction in interfacial tension at longer times when using more concentrated gum solutions.

Fluorescence Histochemical Methods

Abstract: The methods that have commonly been employed to investigate the morphology of the central nervous system have been directed toward two major goals. The first is to identify groups of neurons with similar morphological features, and the second is to demonstrate the axonal projections of such groups of neurons to define the precise neuronal circuitry of the brain and spinal cord. The massive volume of information currently available on the organization of the central nervous system attests to the effectiveness with which these methods have been applied. More recently, new methods have been developed that enhance our capacity to define specific neuronal groups, and these have added to our further definition of the functional organization of the central nervous system. The purpose of this chapter is to describe one group of these techniques, the fluorescence histochemical methods for intracellular demonstration of biogenic amines, methods that permit the designation of groups of neurons, not on the basis of their cellular morphology, location, or axonal projection, but on the basis of their production of a chemical that is utilized for the process of synaptic transmission. These methods have proven to be extraordinarily useful in the analysis of central nervous system structure (see Fuxe et al., 1970; Bjorklund et al., 1972b; Hokfelt and Ljungdahl, 1972a; Moore and Bloom, 1978, 1979, for reviews) and have led to discoveries of fundamental functional importance.

Spinning lubricant for synthetic fiber

Abstract: PURPOSE: To obtain a spinning lubricant having excellent condensing property, excellent antistatic property, a low scumming property, and a small temperature and humidity dependence from an alkyl phosphate (K salt), a specific slickener, and an emulsifier. CONSTITUTION: A spinning lubricant is prepared by mixing 70W85wt% alkyl phosphate (K salt) (A) having an 8W18C alkyl group, a phosphorization degree of 0.6W1.0, and an acid value 0W50, e.g., potassium lauryl phosphate, with one or more slickeners (B) which are liquid at ordinary temperature, selected from water-insoluble higher fatty acid ester derivative (e.g., methyl laurate), animal or vegetable oils (e.g., sesame oil), and mineral oils (e.g., liquid paraffin) and an emulsifier (C) (e.g., POE-added nonylphenol ether). A preferred mixing ratio of components B to C is 1 or more. The spinning lubricant is applied in an amount of 0.06W0.4wt% to a synthetic fiber. COPYRIGHT: (C)1982,JPO&Japio

Fine sphere expandable when heated

Abstract: PURPOSE:To obtain the titled fine spheres having excellent expandability, dispersion properties and retarded scattering properties, by coating the outer surface of fine spheres expandable when heated which enclose a blowing agent in a thermoplastic high polymer material with a high-boiling hydrocarbon, and then drying the fine spheres to attain a specific moisture content. CONSTITUTION:The outer surface of 1-50mu diameer fine spheres foamable when heated which enclose a blowing agent (e.g. neopentane or dichlorofluoroethane) in a thermoplastic high polymer material (e.g. PVC or vinylidene chloride-acrylo- nitril copolymer) is coated with 0.5-10wt% one or more high-boiling hydrocarbons (e.g. octene or liquid paraffin) which are difficulty volatile or nonvolatile at a room temperature and show flow properties at 40 deg.C or lower. Thereafter, the fine spheres are dried to attain a moisture content of 10wt% or less in a gaseous atmosphere at a temperature 5 deg.C or more lower than the foaming temperature of the fine spheres. EFFECT:A foam having excellent blendability with a resin emulsion or solution, being bulky and rich in a three-dimensional sense, is obtained.

Corticosteroid-containing cream

Abstract: A corticosteroid-containing cream comprising (a) 0.05-0.5 parts fluocortolone (b) 2.5-20 parts fatty acid sorbitan esters and/or a mixture of fatty acid mono- and diglycerides (c) 1-5 parts fatty acid monoglycerides (d) 1-10 parts beeswax (e) 5-25 parts liquid paraffin (f) 25-75 parts petroleum jelly and water ad 100 parts, all parts being by weight. The cream is particularly useful as an anti-inflammatory agent for topical application.

Manufacture of magnetic recording medium

Abstract: PURPOSE:To obtain a magnetic recording medium which excels in the surface lubricating properties and the durability, by coating the magnetic coating material containing a specific amount of paraffin to the solid component such as the magnetic powder, the binder or the like and then decomposing and then evaporating the paraffin at the heating and solidifying time. CONSTITUTION:The magnetic coating material, containing the liquid paraffin having 500-600 average molecular weight with 2.5-15wt% to the solid component such as the magnetic powder, the binder or the like, is coated on the supporter of the Al disk, etc. Then it is cured by heating at about 250 deg.C. In that case, the liquid paraffin is decomposed and evaporated to cause the micropores to the magnetic film. The surface of the magnetic film thus obtained is polished up to a fixed thickness of the film to obtain a magnetic recording medium. Then the ''Freon '' solution of the lubricant such as the perfluoroalkyl polyether or the like is coated on the magnetic film of the recording medium and then undergoes the heat treatment at about 200 deg.C to secure the trapping of the lubricant within the micropores. In this way, a magnetic recording medium having the excellent surface libricating properties and durability is obtained.

Separating method of serum

Abstract: PURPOSE:To separate a serum through rapid and simple procedures, by charging a specific viscous liquid and an excess of thixotropic agent particles in a blood-collecting tube, filling the tube with the whole blood sample, coagulating the blood, and centrifuging the coagulated sample. CONSTITUTION:A blood-collecting tube is charged with a viscous liquid having a specific gravity of 1.03-1.08 at 25 deg.C and no thixotropy, e.g. a liquid having an adjusted specific gravity by chlorinating liquid paraffin or liquid polybutene, and a particulate solid having a specific gravity not lower than that of the viscous liquid at 25 deg.C and 1.03-1.08, and capable of imparting the thixotropy to the viscous liquid, preferably polystyrene or acrylonitrile-styrene copolymer having a particle size of 0.2-0.5mm., in an amount more than necessary to impart the thixotropy. The whole blood sample is then filled into the tube and coagulated and centrifuged to form a thixotropic separated layer between the serum and the blood clot and collect the particulate solid under the separated layer.

Rusttproofing lubricating agent for springgset

Abstract: PURPOSE:To prepare the titled agent which is chemically stable and applicable to rolling stocks, by melting a syneretic component such as petrolatum in a specific mixed wax, and dispersing graphite powders coated with tetrafluoroethylene resin in the above mixture followed by cooling CONSTITUTION:A syneretic component composed of petrolatum or liquid paraffin is molten and mixed with a mixed wax composed of paraffin wax and microcrystalline wax Graphite powders coated with tetrafluoroethylene resin are dispersed in the above mixture and cooled to obtain the objective rust-proofing lubricating agent The agent has a viscosity of <=04 st at 100-105 degC, and penetrates between the leaf plates of a spring-set in several-ten seconds

Production of transparent synthetic resin coated copper plate

Abstract: PURPOSE:To apply resin coating of good durability without causing discoloration of copper surfaces by coating transparent synthetic resin baking paint on the copper surfaces then dipping the same in heated paraffin to bake the paint, thence removing the solidified paraffin. CONSTITUTION:A sheet B of a copper or copper-plated plate is dipped in a coloring tank 1 to be sulfide-colored and is then given scratch patterns by a hairline roll 2. Thence, the transparent synthetic resin baking paint C, such as alkyd, melamine, acrylic, or polyester, discharged from a nozzle 3 is coated thereon. The sheet is then dipped in a baking tank 4 in which the paraffin liquid D having been melted by heating up to >=120 deg.C, whereby the resin paint C is baked in an oxygen-free state. It is drawn out from the baking tank 4, and is repeatedly flexed by being passed through plural rolls 5, whereby the solid paraffin having been stuck on the surfaces by solidifying is stripped off. This method enables the copper surfaces to be protected by the transparent resin of high weather resistance without spoiling the oxidized copper tone of the copper surfaces.

Artificial dirt and production of artificially dirtied cloth

Abstract: PURPOSE:To produce an artificially dirtied cloth whose washability is resemble closely to natural dirt, by a method wherein a cloth is immersed in a dirtying bath contg. a water-soluble protein, a specified org. component, soil and carbon black, and then dried. CONSTITUTION:3-12wt% of a water-soluble protein such as casein is dissolved in warm water, 0.1-1.0wt% of carbon black and 20-40wt% of soil contg. not less than 60wt% of soil particles having a particle diameter of not more than 2mu (said soil particles being dried at a temp. of 80-300 deg.C until constant weight is obtd.); are uniformly dispersed in the above resulting protein solution. Then to the resulting aq. dispersion is added 10-75wt% of an org. component consisting of (a) 25- 65wt% of oleic acid and/or linoleic acid, (b) 10-30wt% of a cholesterol ester of the (a) component, (c) 15-40wt% of a triglyceride of the (a) component, (d) 1-8wt% of squalene, (e) 1-8% of liquid paraffin, and (f) 1-8% of cholesterol, to obtain a dirtying bath having a concentration of 10-100g of dirt component per liter. A cloth is immersed in this bath, and passed between two rubber rollers to deposit uniformly the dirt on the cloth. Then the cloth is dried at a temp. of 95- 150 deg.C for 15min-3hr.

Preparation of particulate polyvinyl alcohol

Abstract: PURPOSE:To make the particle diameter of PVA into a particle diameter with improved water dispersion, by dispersing a polyvinyl ester solution using a mixed solvent obtained by blending specific amounts of an alcohol and a given hydrocarbon as solvents into a liquid of a nonsolvent in particular state, followed by saponification. CONSTITUTION:A polyvinyl ester is dissolved in a mixed solvent consisting of (A) 100pts.wt. alcohol or alcohol and methyl acetate and (B) 10-200pts.wt. 5-10C hydrocarbon (hexene, etc.). The prepared solution of the polyvinyl ester in the mixed solvent is dispersed into a nonsolvent liquid, e.g., liquid paraffin, etc. in a particle state and saponified. The nonsolvent liquid has to be almost immiscible with the solvent A and a liquid having a higher viscosity than that of the solvent B. In spite of the enlarged particle diameter, practically no nonsolvent liquid is contained in the particles.

Different afferent temperature inputs of single dorsal horn neurones in rats

Abstract: Publisher Summary This chapter describes a study to analyze different afferent temperature inputs of single dorsal horn neurons in rats. Laminectomy was performed on male rats between Th10 and L3 in urethan anesthesia. Spinal cold blockade was provided by an insulated metal thermode at Th11; spinal cord temperature was maintained at 37°C by a temperature-controlled pool of liquid paraffin. Periodical temperature stimuli of 0.01 and 0.03 Hz were applied to the ventral and ventrolateral surface of the scrotal skin in the temperature range of about 22–28, 28–34, and 34–40°C by circulating water through a metal thermode. Temperature between the surface of scrotal skin and thermode was measured with two thermocouples. Body temperature was maintained at 37 ± 0.5°C. Experiments were stopped if arterial blood pressure fell short of 80 mmHg. Extracellular recordings of the DHN activity were obtained by capillary microelectrodes filled with Na-acetate and pontamine sky blue for locating the recording position. Conventional electronic equipment was used for data display and storage. Four types of reactions to periodic temperature stimulation of the scrotal skin were observed in different DHN. About two-third of the temperature reactive neurons demonstrated an increase of activity during the warming phase, and about 20% were accelerated by cooling.

Manufacture of nonaqueousselectrolyte battery

Abstract: PURPOSE:To enhance the cold-discharge characteristics and the heavy-load-discharge characteristics of a nonaqueous-electrolyte battery by washing a lithium negative-electrode with either an electrolyte, or an organic solvent which is contained in the electrolyte, and thus removing an oil or the like which is attached to the surface of the negative electrode. CONSTITUTION:A lithium negative-electrode is washed with either an electrolyte, or an organic solvent such as propylene carbonate, 1,2-dimethoxyethane, tetrahydrofuran or gamma-butyrolactone which is contained in the electrolyte, thus a lubricant such as an oil or a paraffin which is attached to the surface being removed. For example, metal lithium which has been stored in a kerosene is taken out of that, and it is rolled into a thin plate of 0.3mm. thickness by using the lubricant of a liquid paraffin, before the thin plate is punched into discs of 20mm.phi. Next, the thus prepared discs are immersed in an electrolyte to remove the lubricant oil and dirt which are attached to them; the electrolyte is prepared by dissolving 1mol/l lithium perchlorate into a mixture solution of equal volumes of propylene carbonate and 1,2- dimethoxyethane. Through the means mentioned above, the voltages of a nonaqueous-electrolyte battery at cold discharge and heavyload discharge can be maintained high.

Determination of Nicarbazin by Gas Liquid_Chromatography

Abstract: Nicarbazin (NCZ) is an equimolar complex of 4, 4-dinitrocarbanilide (DNC) and 2-hydroxy-4, 6-dimethylpyrimidine.Gas chromatographic determination with an electron capture detector (ECD) was carried out for p-nitroaniline (NA) obtained by acid hydrolysis of NCZ in a liquid paraffin bath at 150°C for 15 minutes. NA, a reaction product, was extracted with ethyl acetate in the presence of supersaturated sodium chloride in alkaline solution and the NA was determined by gas liquid chromatography.Gas chromatography: A Shimadzu GC 4CMPFE gas chromatograph with an ECD was used for NA. The column consisted of a glass tube (1mm×3mm ID) packed with 5% Thermon 3000 on Chromosorb W (AW DMCS, 80-100 mesh) and conditioned at 190°C. The temperature of the bath detector and injector was 230°C and the flow rate of nitrogen carrier gas was 20ml/min.A sample was extracted with methanol in an electric blender. The extract was cleaned up by ion exchange column chromatography on Amberlite CG-400 (OH form). The eluent was a mixture of hydrochloric acid and methanol (2:98).The recoveries of NCZ added to chicken tissues and eggs were in the range of 85-97%. The minimum detectable concentration was 0.02ppm as NCZ.

Recovery of volatile organic substance

Abstract: PURPOSE:To recover the volatile organic substance effectively by transferring the volatile organic substance to an organic solvent immiscible with the volatile organic substance or aqueous solution, from the aqueous solution dissolved with water- insoluble and volatile organic substance present in gas. CONSTITUTION:Air containing the volatile organic substance P (e.g., toluene) is supplied to the bottom of an adsorption tower 1 by a blower 2, and the organic substance aqueous solution A (e.g., diethyleneglycolmonobutylether) is supplied to the top of the tower 1, where they are brought into contact with each other in a vapor-liquid contact manner. Then, the substance P-dissolved solution A is sent from the bottom of the tower 1 to a liquid trap 4 from which the substance P- dissolved solution A is introduced into a recovery tower 6, where the said solution A is brought into contact with an extracting liquid B immiscible with the lotion A (e.g., liquid paraffin) in a liquid-liquid contact manner to transfer the substance P to the liquid B. Then, the solution A deprived of the substance P is returned to the tower 1 where the substance P is separated and removed by the usual method from the liquid B which is, in turn, sent to the tower 6 for reuse.

Preparation of molded article of water-containing polymer

Abstract: PURPOSE:To obtain a molded article not being transformed in hot water, not changing bond strength depending upon temperature, having flexibility at a temperature <= ice point, by blending polymer latex, e.g., natural rubber latex, etc. with an oily substance, adding a polyether compound to the blend, followed by molding it. CONSTITUTION:Natural rubber latex or latex of carboxyl group-containing polymer, preferably a copolymer of styrene, (meth)acrylic acid, butadiene, and an unsaturated carboxylic acid, is blended with soybean oil, liquid paraffin, etc. as an oily substance to give a uniform creamy blend, which is blended with a polyether compound, preferably polyoxypropylene having a molecular weight 1,000-6,000, etc. The latex is used in creamy state during processing. A surface active agent, etc. may be added while the oily substance being blended, the pH of the latex is preferably 3-7 when the polyether compound is blended, and the addition of a polyvalent metal compound controls easily and the properties of bulked materials.

External agent for skin

Abstract: PURPOSE: An external agent for the skin, containing pantetheine-S-sulfonic acid and/or a salt thereof, and capable of inhibiting then irritation of a base and an drug active constituent without affecting the pharmaceutical stability. CONSTITUTION: An external agent for the skin obtained by dissolving, dispersing or mixing a drug active constituent in a base, e.g. vaseline, liquid paraffin or fat, and incorporting pantetheine-S-sulfonic acid or a salt thereof in an amount of 0.5% or more, preferably 1W20%, and if necessary adding a penetrant or kerationous softening agent thereto. The dosage form thereof is a solution, ointment or powder. The pantetheine-S-sulfonate which is an active constituent is an easily handleable powder having a high solubility in water at a low cost. The compound is useful as a precursor for coenzyme A playing an important role in the energy metabolism in the living body. COPYRIGHT: (C)1983,JPO&Japio

Prevention of generation of malodorant or harmful gas of liquid substance

Abstract: PURPOSE:To easily seal a generated malodorant and harmful gas by a liquid by flowing a sealing liquid with a low specific gravity into a surface of a liquid substance such as a waste water in an opened condition. CONSTITUTION:In a precipitation separation tank or the like of an ammonia containing waste water treating procedure, NH3 is generated from a charging port 3, a liquid level 1 and a water passage part 4. To a surface of a liquid substance such as said waste water, a nonvolatile liquid such as a liquid paraffin which has a specific gravity lower than that of said liquid substance, low solubility thereagainst and is not reacted chemically therewith is thrown to seal said liquid substance. As a result, the generation of the malodorant and harmful gas such as an ammonia vapor from the liquid surface is eliminated and working enviroment is improved. Moreover, the used fluid paraffin is stable against heat, sunlight or components in the waste liquid and suitable as a sealing liquid because it is harmless and handled easily.

Manufacture of transparent saturated polyester bottle

Abstract: PURPOSE:To prevent accumulation of an olegomer component on the internal wall surface of a die and continuously manufacture the captioned bottle by applying a parting agent on the external wall surface of an intermediate material of a bottomed cylindrical shape beforehand and elongating, expanding and thermosetting the said intermediate material in a biaxial direction. CONSTITUTION:A parting agent is applied on the external wall surface of an intermediate material of a bottomed cylindrical shape beforehand and then is blow- formed, when a transparent polyester bottle is manufactured using the said intermediate material. Edible oil, machine oil, silicon oil, liquid paraffin, vaseline, etc. are recommended as a parting agent. It is applied on the external wall surface of an intermediate material by methods such as immersion, spray, roller coating, etc. As a result, it is possible to prevent troubles such as the difficulty to remove a formed product because of its sticking to the internal wall surface of a die attributed to the accumulation of the oligomer component of saturated polyester resin components constituting an intermediate material on the internal wall surface of a die when a blow-forming is carried out or a dulling generated on the surface of a formed product.