Showing papers on "Liquid paraffin published in 1993"
Patent•
19 Aug 1993
TL;DR: Pancreatin-containing micropellet cores which can be coated with a gastric juice-resistant film are prepared by extruding a mixture containing pancreatin, polyethylene glycol 4000 and a lower alcohol such as propan-2-ol to produce extrudates which break by themselves into fragments, rounding the fragments with the addition of highly liquid paraffin and drying as discussed by the authors.
Abstract: Pancreatin-containing micropellet cores which can be coated with a gastric juice-resistant film are prepared by extruding a mixture containing pancreatin, polyethylene glycol 4000 and a lower alcohol such as propan-2-ol to produce extrudates which break by themselves into fragments, rounding the fragments with the addition of highly liquid paraffin and drying. Propan-2-ol may be present with the paraffin during rounding. The micropellet cores contain 65-85% pancreatin, and have a bulk density of 0.6 g/ml to 0.85 g/ml, a spherical to ellipsoidal shape with a minor axis in the range of 0.7-1.4 mm and a particle size distribution in which at least 80% of the micropellet cores have a minor axis to major axis ratio in the range from 1:1 to 1:2.
98 citations
TL;DR: In this article, the friction and wear properties of N-containing heterocyclic compounds (indole, indazole and benzotriazole), which have the same cyclic structure except for the number of N atoms, added to alkylbenzene and to a mixture of liquid paraffin with 2 % wt succinimide dispersant were evaluated using a fourball machine.
Abstract: The friction and wear properties of N-containing heterocyclic compounds (indole, indazole and benzotriazole), which have the same cyclic structure except for the number of N atoms, added to alkylbenzene and to a mixture of liquid paraffin with 2 % wt succinimide dispersant were evaluated using a four-ball machine. The N-hexadecanoylindazole and N-hexadecanoylbenzotriazole were synthesised, and their friction and wear properties in liquid paraffin were also evaluated. X-ray photoelectron spectroscopy (XPS) was used to examine the binding energy of N1s on the rubbed surface. The effect of the presence of a lone electron pair of nitrogens in the compounds on antiwear property is discussed using the theory of molecular orbits.
51 citations
TL;DR: The viability of freshly harvested conidia of Metarhizium flavoviride stored in mineral, vegetable, or animal oils at 25°C was assessed over a period of 4 months and storage at 5 and 15°C resulted in enhanced conidial viability.
48 citations
TL;DR: In this article, the synthesis and characterization of poly(oxy-2,6-naphthalenediylcarbonyl) (PON) whiskers from 2-acetoxy-6naphthoic acid are described.
42 citations
TL;DR: In this paper, pyrene excimer formation in individual liquid paraffin droplets dispersed in aqueous gelatin matrices was studied by three-dimensional space and time-resolved fluorescence spectroscopy.
Abstract: Pyrene excimer formation in individual liquid paraffin droplets dispersed in aqueous gelatin matrices was studied by three-dimensional space- and time-resolved fluorescence spectroscopy. The pyrene excimer formation efficiency in the droplets was constant irrespective of the droplet size. The parameters of the excimer formation were determined for each droplet and compared with those observed in bulk pyrene/liquid paraffin solution. The results were discussed on the basis of the depth profiles and the dynamics of pyrene fluorescence in individual liquid paraffin droplets
18 citations
Patent•
09 Sep 1993
TL;DR: An antivirally active pharmaceutical oil-in-water emulsion containing 9-[(2-hydroxyethoxy)methyl]guanine (acyclovir) or a salt or ester thereof as an active ingredient in the continuous aqueous phase, said phase in addition to said active ingredient and the dispersed oil phase containing a water miscible organic solvent, wherein a polyhydric alcohol may form a constituent.
Abstract: An antivirally active pharmaceutical oil-in-water emulsion containing 9-[(2-hydroxyethoxy)methyl]guanine (acyclovir) or a salt or ester thereof as an active ingredient in the continuous aqueous phase, said phase in addition to said active ingredient and the dispersed oil phase containing a water miscible organic solvent, wherein a polyhydric alcohol may form a constituent. The emulsion comprises from 1 % to 10 % w/w of acyclovir or a salt or ester thereof, from 20 % to 50 % w/w of organic solvent comprising from 5 % to 50 % w/w glycerol formal and from 0 % to 29 % w/w of a polyhydric alcohol, and from 20 % to 40 % w/w water, said percentages being based on the total weight of the formulation. As a polyhydric alcohol propylene glycol may be used, and the emulsion may be available as a cream, wherein the oil phase comprises white vaseline, liquid paraffin (paraffin oil), glycerol monostearate, and stearic acid.
16 citations
TL;DR: Treatment of Canada Goose eggs with liquid paraffin could, when combined with other control methods, make a valuable contribution to population management programmes aimed at reducing damage.
Abstract: The British population of feral Canada Geese is increasing at about 8.5% per year and is causing concern through conflicts with agriculture, human recreation and other wildlife. This paper addresses a technique of population management involving the coating of eggs with a cheap and readily available chemical, liquid paraffin, to prevent hatching. Laboratory studies with domestic chicken eggs and field studies with Canada Goose eggs showed that the treatment was completely successful in suppressing hatching. Examination of chick embryos and adult geese suggested that the technique was likely to be at least as humane as other techniques in regular use. The birds were shown to incubate eggs treated with liquid paraffin for an average of 37 days, ‘pricked’ eggs for 17 days, whilst controls hatched after 28 days. Treatment of Canada Goose eggs with liquid paraffin could, when combined with other control methods, make a valuable contribution to population management programmes aimed at reducing damage.
16 citations
TL;DR: In this paper, double-chain bis (sulfonate) compounds were investigated in a mixed system of liquid paraffin and water and shown to be easily soluble in water.
Abstract: Double-chain diol compounds and double-chain bis (sulfonate) surfactants, each bearing a sulfur atom as a sulfide, sulfoxide, or sulfone in the middle of the connecting part between two alkyl chains, were prepared. The emulsifying properties of the double-chain diols were studied in a mixed system of liquid paraffin and water. The double-chain bis (sulfonate) compounds bearing two decyl groups as the lipophilic part were easily soluble in water. Some surface-active properties of the surfactants bearing a sulfur atom in the connecting part were examined along with a similar type of double-chain surfactant having an oxygen atom in place of a sulfur atom. Displacement of the ether oxygen in the middle of the connecting group by the sulfide sulfur atom caused a slight decrease in cmc. A bulky group such as sulfinyl or sulfonyl in the middle of the connecting part negatively affected the micelle forming properties and the capacity to lessen surface tension. The double-chain bis (sulfonate) surfactants showed much greater lime-soap dispersing ability than sodium 1-dodecanesulfonate.
16 citations
TL;DR: A mixture of hydrated nitrosylruthenium(III) chloride and 2-methyl-8-quinolinol (H2mqu) (1:4 molar ratio) in acetic acid aqueous solution adjusted to pH 5.5 and warmed at c. 70 °C for 2 h led to preparation of cis- [Ru(OAc)(2mqn)2NO] which has cis(0,0) and trans(N,N) configuration for the ligating atoms of the 2mqsn ligands as discussed by the authors.
13 citations
TL;DR: All patients improved substantially during hospitalization, and this improvement continued until 1 month after discharge, but then diminished, and no significant difference was noted in the rate of deterioration between those patients on Efamol Marine and those on placebo.
Abstract: A total of 51 patients with chronic stable plaque psoriasis extensive enough to warrant hospital admission were entered in a double-blind placebo-controlled trial They were treated with conventional tar and dithranol, and at the same time randomly allocated to receive either 12 × 500 mg capsules of combined fish oil and evening primrose oil (Efamol Marine) or 12 capsules of placebo (liquid paraffin) daily to ascertain whether their remission period could be prolonged They were assessed 1, 4 and 7 months after discharge Of the 51 patients, 37 completed 4 months and 23 completed 7 months All patients improved substantially during hospitalization, and this improvement continued until 1 month after discharge, but then diminished No significant difference was noted in the rate of deterioration between those patients on Efamol Marine and those on placebo
13 citations
Patent•
24 Nov 1993
TL;DR: In this article, a finishing agent composition capable of imparting flexibility and smoothness having high washing resistance to a fiber by providing an oleophilic surfactant containing a component having an HLB lower than a specific level was presented.
Abstract: PURPOSE:To obtain a finishing agent composition capable of imparting flexibility and smoothness having high washing resistance to a fiber by providing an oleophilic surfactant containing a component having an HLB lower than a specific level and dispersing the surfactant as a main component in water. CONSTITUTION:This finishing agent composition can be produced by compounding an oleophilic surfactant having an HLB of >=9 and selected from a polyoxyalkylene alkyl ether, a polyoxyalkylene alkyl ester (e.g. POE monostearate, POE monooleate and ethylene glycol distearate) and a polyhydric alcohol fatty acid ester such as sorbitan monostearate, a sucrose fatty acid ester and lecithin with a substance such as hydrocarbon (e.g. liquid paraffin and petrolatum), a higher alcohol, a higher alcohol fatty acid ester (e.g. beeswax and spermaceti), a triglyceride and a silicone oil and dispersing the mixture in water. Especially 18 pts.wt. of sorbitan monostearate and 2 pts.wt. of lecithin are dispersed in 80 pts.wt. of water. The composition is effective for imparting excellent softness and smoothness to natural and synthetic fibers or hair.
TL;DR: The results indicate that the mutant strain 2PU-18 is superior in both total lipase productivity and permeability of lipase to the parental strain WU-C12 when petroleum products are used as carbon sources.
Abstract: Lipase high-producing mutants with petroleum products as carbon sources were successfully induced from Trichosporon fermentans WU-C12 by ultraviolet (UV) light irradiation. In the first mutation step, one mutant strain, PU-30, derived from strain WU-C12 was selected. The productivity of extracellular lipase of PU-30 reached 58 units (U)/ml in the medium containing kerosene, being approximately twice the productivity of the parental strain WU-C12. In the second mutation step, the mutant strain 2PU-18 was induced from strain PU-30. In medium containing kerosene, gas oil and liquid paraffin, the 2PU-18 produced 70 U/ml, 62 U/ml and 60 U/ml of extracellular lipase, respectively. When various n-alkanes (C8-C18) were used as carbon sources, the parental strain WU-C12 produced more than 20 U/ml of lipase only from C9-C12 alkanes, but 2PU-18 could produce more than 50 U/ml of lipase from C8-C18 alkanes. When cultivated for 3 days in medium containing liquid paraffin, the activity ratios of extracellular lipase to total lipase and the values of extracellular lipase activity per dry-cell weight were 0.44 and 0.65 U/mg for WU-C12, and 0.62 and 1.82 U/mg for 2PU-18, respectively. These results indicate that the mutant strain 2PU-18 is superior in both total lipase productivity and permeability of lipase to the parental strain WU-C12 when petroleum products are used as carbon sources.
Patent•
02 Mar 1993
TL;DR: In this article, a liquid injecting device at the peak part of the raw material mixing tank and injecting liquid paraffin into the mixing tank under heating was used to allow the washing in a raw-material mixing tank to be executed with smaller energy in a short period of time.
Abstract: PURPOSE:To allow the washing in a raw material mixing tank to be executed with smaller energy in a short period of time by using a small amt. of paraffin by providing a liquid injecting device at the peak part of the raw material mixing tank and injecting liquid paraffin into the raw material mixing tank under heating of the raw material mixing tank. CONSTITUTION:A valve 30 in the bottom of the raw material mixing tank 1 is closed and a heat medium which is a heating oil is passed in a hose 2 to heat the inside surface of the tank 1 to a prescribed temp. The liquid paraffin of the same quality as the quality of the raw material liquid paraffin is then force fed from a washing tank 28 via a washing liquid supply pipe 25 by a pump 29 into a hollow spherical body 26 and is injected from a nozzle 27 into the tank. The injected liquid paraffin is then heated to the prescribed temp. while the liquid paraffin flows down on the inside surface of the tank 1 and is stored up to the level at which low-speed stirring vanes 3 and high-speed stirring vanes 4 are submerged. The tank 1 is internally washed by alternately rotating the vanes 3, 4 forward and backward respectively at prescribed rotating speeds, by which the remaining materials of the previous lot are removed.
Patent•
02 Feb 1993
TL;DR: Peroxide-developing disinfectants or antiseptics comprise (a) a solid peroxide-cleaver or peroxide adduct in an anhydrous fat phase; the solid particles have size opt about 50 microns; and (b) they contain water/oil emulsifiers (such as sorbitan monostearate, -monopalmitate, monolaurate or monooleate).
Abstract: Peroxide-developing disinfectants or antiseptics comprise (a) a solid peroxide-cleaver or peroxide adduct in (b) an anhydrous fat phase.The solid particles have size opt about 50 microns. The compsns. contain inorganic peroxides (such as magnesium peroxide or zinc peroxide) or organic peroxides (such as percarbamide or salts of peracetic acid or perphthalic acid). The disinfectants contain water/oil emulsifiers (such as sorbitan monostearate, -monopalmitate, monolaurate or monooleate), and liquid paraffin and/or vaseline as fat phase.
TL;DR: In this paper, the addition of a macro-molecular solute (PVP) facilitated production of thin droplets and reduced crystal size by a very simple method involving slow drying under liquid paraffin oil.
TL;DR: In this article, the fluorescence and excitation spectra and fluorescence lifetimes of 9,10-dimethylanthracene (DMA) were measured in the solvents n-pentane, toluene, cyclohexane, decalin, diisoproylnaphthaline (DIPN), liquid paraffin, and aqueous cetytrimethylammonium chloride (CTAC).
Abstract: Fluorescence and excitation spectra and fluorescence lifetimes of 9,10-dimethylanthracene (DMA) were measured in the solvents n-pentane, toluene, cyclohexane, decalin, diisoproylnaphthaline (DIPN), liquid paraffin, and aqueous cetytrimethylammonium chloride (CTAC). Different viscosities had little influence on the fluorescence properties. The addition of increasing amounts of DIPN to cyclohexane solutions caused a gradual increase of the fluorescence lifetime from 15 to 20 ns, which was not observed in the micellar CTAC solutions. The formation of ground state clusters of DIPN and DMA in cyclohexane was concluded from the concentration dependence of the effects. In solid complexes of DMA and cyclodextrins (CD), lifetimes up to 30 ns were measured. Complexes with γ-CD can be prepared in such a way that either monomer emission or excimer emission is predominantly observed.
Journal Article•
TL;DR: Diets supplemented with fish oil did not prevent multiple organ failure or reduce plasma concentrations of TNF-alpha and Decontamination of the gut did not alter these results.
Abstract: OBJECTIVE To examine the effects of various diets supplemented with fat in an experimental model of multiple organ failure in mice. DESIGN Two randomised laboratory studies. SETTING University hospital. MATERIAL 177 female Swiss mice (weight 20-30 g). INTERVENTIONS Experiment I: 59 mice; 20 received no dietary supplement, 20 received 15% palm oil, and 19 received 14% fish oil plus 1% corn oil, eight weeks before injection of 100 mg zymosan/100 g in 4 ml liquid paraffin; 5 mice in each group killed after 1.5 hours, and the rest on day 12. Experiment II: 118 mice; 29 received no dietary supplement, 30 received 15% palm oil, 30 1% corn oil, and 29 14% fish oil, 12 weeks before injection with zymosan. 20 mice in each group received streptomycin 5 g/l in drinking water starting five days before injection of zymosan and continued until the end of the experiment. All mice killed on day 12. MAIN OUTCOME MEASURES Mortality, body and organ weights, and culture of peritoneal fluid. Detection of tumour necrosis factor-alpha (TNF-alpha) in plasma. RESULTS Experiment I: only 5 control mice, 2 in the fish oil, and 7 in the palm oil, groups survived to day 12. Spleens in mice given fish oil were significantly heavier than those that had had palm oil (p = 0.03). Experiment II: 108/118 mice survived until day 12, and most had macroscopic signs of multiple organ failure. Liver weights in the fish oil group were lower than in the control (p = 0.04) and palm oil (p = 0.03) groups, and kidney weights higher than in the corn oil group (p = 0.007); there were no differences in the amounts of TNF-alpha detected in the blood. One culture in each experiment grew bacteria. CONCLUSION Diets supplemented with fish oil did not prevent multiple organ failure or reduce plasma concentrations of TNF-alpha. Decontamination of the gut did not alter these results.
Patent•
02 Apr 1993
TL;DR: In this paper, a liquid dust proofing agent is applied to the surface or interior of an inorganic fiber material to provide the objective formed body extremely readily handleable in executing, carrying, etc.
Abstract: PURPOSE: To obtain the subject formed body free from shrinkage due to heat treatment, excellent in strength and shape stability and readily handleable by applying a liquid dust proofing agent to an inorganic fiber and its formed body or applying and impregnating the liquid dust proofing agent into the fiber and its formed body CONSTITUTION: A liquid dust proofing agent such as kerosine or liquid paraffin or an adhesive, etc, such as acrylic emulsion or vinyl acetate emulsion is applied to or impregnated into the surface of an inorganic fiber material consisting of mullite fiber or alumina fiber or a formed body composed of a laminated body of its inorganic fiber blanket and the liquid dust proofing agent is applied to the surface or the interior of the fiber to provide the objective formed body extremely readily handleable in executing, carrying, etc, without scattering fine fiber or particles from the inorganic fiber formed body in getting shock COPYRIGHT: (C)1994,JPO
Patent•
19 Feb 1993
TL;DR: The tweezers with electrical heating according to the invention are used to put tissue samples into liquid paraffin, provision being made for two metal tips (2) made of a readily heat-conducting material, e.g. copper, either to be joined to two gripping pieces (1) made poorly heat conductive material, i.e. plastics, or via thermally insulating intermediate pieces (9) to the gripping pieces made of any desired material as discussed by the authors.
Abstract: The tweezers with electrical heating according to the invention are used to put tissue samples into liquid paraffin, provision being made for two metal tips (2) made of a readily heat-conducting material, e.g. copper, either to be joined to two gripping pieces (1) made of poorly heat-conducting material, e.g. plastics, or to be joined via thermally insulating intermediate pieces (9) to the gripping pieces (8) made of any desired material.
Patent•
11 Aug 1993
TL;DR: In this article, carboxyl methyl cellulose is added with hebitane, dicaine hydrochloride, etamsylatum and gentamicin sulphate as well as glycerine and liquid paraffin wax to form the said anaesthetic.
Abstract: The present invention relates to compounding method of anaesthetic, esp colloid anaesthetic compound for mucosa surface anaesthesia in surgical examination and treatment. In the invention carboxyl methyl cellulose is soaked and added with hebitane, dicaine hydrochloride, etamsylatum and gentamicin sulphate as well as glycerine and liquid paraffin wax to form the said anaesthetic. It has long retention period on mucosa surface, which results in not only improved anaesthetic effect but also styptic and lubricant function.
Patent•
[...]
12 Mar 1993
TL;DR: In this paper, the authors presented an oil gel cosmetic capable of improving the feeling of use without impairing the stability of the formula, which comprises (1) 5-40wt% wax, eg microcrystalline wax or ceresin and (2) 20-90wt% liquid fats and oils, eg liquid paraffin or dimethylpolysiloxane.
Abstract: PURPOSE: To obtain an oil gel cosmetic capable of improving the feeling of use without impairing the stability CONSTITUTION: This oil get cosmetic comprises (A) 005-20wt% hydrophobic aerosol silica gel obtained by hydrolyzing silicon tetrachloride in an oxyhydrogen flame and subjecting the resultant hydrophilic aerosol silica gel to the hydrophobizing treatment, (B) 5-40wt% wax, eg microcrystalline wax or ceresin and (C) 20-90wt% liquid fats and oils, eg liquid paraffin or dimethylpolysiloxane The introducing treatment of trimethylsiloxy group with trimethylsilyl chloride or hexamethyldisilazane, methylating treatment with dimethyldichlorodisilane, coating and baking treatment with hydrogenmethylpolysiloxane, coating with a metallic soap, etc, are cited as a method for hydrophobizing treatment in the ingredient (A) COPYRIGHT: (C)1994,JPO&Japio
TL;DR: In this article, the spherulite growth rate in a 40 60 isotactic polypropylene (PP)/liquid paraffin (LP) mixture under a polarized microscope with a TV video recording system was investigated.
Patent•
26 Feb 1993
TL;DR: In this article, the authors proposed a method to decrease fogging by exposing and a change ratio of a line width and to form the image faithful to the image of an original picture by specifying the total clouding degree and the ratio of the internal degree to the total degree of a biaxially stretched polyoxymethylene film.
Abstract: PURPOSE:To decrease fogging by exposing and a change ratio of a line width and to form the image faithful to the image of an original picture by respectively specifying the total clouding degree and the ratio of the internal clouding degree to the total clouding degree of a biaxially stretched polyoxymethylene film. CONSTITUTION:The film for protecting a photomask having <=10% total clouding degree and <=50% ratio of the internal clouding degree to the total clouding degree is formed of the biaxially stretched polyoxymethylene film. The clouding degree is calculated by an equation; clouding degree (%)=Td/TdX100 when the clouding degree is designated as total ray transmittance (Td) = parallel ray transmittance (Tp) + scattered light transmittance (Td) in such a case. The respective values can be obtd. by an ordinary ray transmittance measuring instrument of an integrating sphere type. The internal clouding degree is obtd. by coating the front and rear surfaces of the film with transparent and viscous liquid, such as silicone oil or liquid paraffin and measuring the clouding degree after eliminating the influence of the ruggedness on the surface. The surface clouding degree is the value obtd. after this clouding degree is subtracted from the total clouding degree.
TL;DR: To confirm positivity in routine guinea pig studies, contact allergenicity was investigated by a challenge assay in vitro using a co-culture of autologous lymphocytes passed through a nylon-wool column and antigen-presenting cells (APCs) modified with or without antigen.
TL;DR: In this article, a model to predict the thermal conductivity of liquid hydrocarbons and their mixtures is presented, where three different factors are added to the model as perturbation from the property of the reference fluid.
Abstract: a model to predict the thermal conductivity of liquid hydrocarbons and their mixtures is presented. The reference fluid is a pure liquid paraffin at zero pressure. Three different factors are added to the model as perturbation from the property of the reference fluid. The first correction accounts for the aromatic character of the liquid, and the second takes into account the effect of pressure. The property of the mixture is expressed as a function of the thermal conductivity of the pure fluid, plus a term accounting for mixing. The last correction term was theoretically derived based on a continuous thermodynamic approach. The normal boiling temperature and the Watson parameter are used as characterizing variables. The thermal conductivity of pure substances may be predicted with average deviations below 2% with respect to experimental data. Also the average deviations for data of liquid mixtures were around 3%. Several applications of the model to petroleum fractions and coal-derived liquids show deviations comparable to previous models.
Patent•
16 Nov 1993
TL;DR: In this article, a copolymer rubber with an organic peroxide, a softener, and a mixture of propylene and dicyclopentadiene is presented.
Abstract: PURPOSE: To obtain the subject composition providing a cross-linked material having excellent heat resistance, showing no tackiness even by continuous cross- linking in hot air by blending a specific ethylene-propylene-based copolymer rubber with an organic peroxide, a softener, etc., in a prescribed ratio. CONSTITUTION: This rubber composition comprises (A) 100 pts.wt. of an ethylene-propylene-based copolymer rubber containing 25-45wt.% of a component composed of propylene and 8-26wt.% of a component composed of dicyclopentadiene, (B) 0.05-10 pts.wt. of an organic peroxide [preferably 2,5-di- methyl-2,5-di(tbutylperoxy)hexane], (C) 35-75 pts.wt. of carbon black having 1.2-3 ml/g absorption amount of DBP, (D) 90-120 pts. wt. of a white filler (preferably clay or talc) and (E) 25-55 pts.wt. of a softener (preferably paraffinic process oil or liquid paraffin). COPYRIGHT: (C)1995,JPO
Patent•
09 Feb 1993
TL;DR: In this article, the subject composition is obtained by mixing the obtained dispersion liquid with an isocyanate-containing polyurethane polymer having one or more isoclynate groups (i.e., a polyamine compound having >=2 amino groups and having a melting point of >=50 deg.C).
Abstract: PURPOSE:To obtain the subject composition curable at an extremely high curing speed and having excellent curability without using a blocking agent by adding an isocyanate-containing compound to a dispersion liquid obtained by dispersing a specific polyamine compound in a specific dispersion medium. CONSTITUTION:A polyamine compound having >=2 amino groups and having a melting point of >=50 deg.C (preferably 1, 12-dodecanediamine) is dispersed in a dispersion medium non-reactive to the polyamine compound and capable of dissolving <=5g of the polyamine compound in 100g of the medium at ordinary temperature (preferably liquid paraffin). The objective composition is produced by mixing the obtained dispersion liquid with an isocyanate-containing compound having one or more isocyanate groups (an isocyanate-containing polyurethane polymer produced by reacting polyols with a polyisocyanate compound and containing 1-100wt.% of polydiene-type polyol based on the total polyol) at <=40 deg.C.
Patent•
27 Apr 1993
TL;DR: In this paper, a binder resin with fine spherical ceramic powder having the mean size not greater than a specified value is used to obtain the subject material excellent in kneadability and fluidity, easy to degrease, also high in the mechanical strength of the sintered compacts therefrom.
Abstract: PURPOSE:To obtain the subject material excellent in kneadability and fluidity, easy to degrease, also high in the mechanical strength of the sintered compacts therefrom by incorporating a binder resin with fine spherical ceramic powder having the mean size not greater than a specified value. CONSTITUTION:The objective injection molding material can be obtained by incorporating (A) spherical ceramic powder having <=7mum mean diameter (e.g. spherical alumina powder) with (B) a binder resin (e.g. polybutyl methacrylate resin) and, pref. furthermore, (C) nonspherical ceramic powder having <=2.5mum mean diameter (e.g. mullite powder). This material may further be incorporated with ingredient(s) like solvent, wax, or liquid paraffin. Because of using the above fine ceramic powder as ceramic source, large amount of the binder resin, solvent etc., beyond the necessity may not be added, thus leading to easier degreasing and getting hard to develop such a phenomenon as deformation or cracking in the degreasing.
TL;DR: In this paper, a mixture of β-carotene and phenylalanine was heated at 210°C for 15 min, and HPLC analysis of the TLC bands permitted the detection of further components.