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Liquid paraffin

About: Liquid paraffin is a research topic. Over the lifetime, 6185 publications have been published within this topic receiving 52956 citations.


Papers
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Journal ArticleDOI
01 Aug 2003-Polymer
TL;DR: In this paper, needle-like poly(azomethine) crystals were successfully prepared by the polycondensation of 1,4-phenylenediamine and 1, 4-terephthalaldehyde in liquid paraffin at 180 °C.

17 citations

Patent
24 Nov 1975
TL;DR: In this article, the specification describes a device for producing aesthetic effects, more particularly light effects, with at least one partly transparent or transluscent and preferably closed vessel, which contains at least two liquids of different density which are not completely and not permanently miscible with each other.
Abstract: The specification describes a device for producing aesthetic effects, more particularly light effects, with at least one partly transparent or transluscent and preferably closed vessel. The vessel contains at least two liquids of different density which are not completely and not permanently miscible with each other. In the order of increasing density at least three liquids A, B, C with the following principal or sole components are employed: A liquid paraffin and/or silicone oil and/or naphthene and/or hexachlorobutadiene; B water or an ether, more particularly propanetrioxyethylether or a polyether; C esters with chemically bound phosphorus and/or chemically bound halogen, preferably chlorine, an ester of phthalic acid, and more particularly dibutoxybutyl phthalate, a carbonic acid ester, more particularly propanediol carbonate, or ethanediolmonophenylether or tetrahydrothiophene-1,1-dioxide with the provision that the selected liquids are not completely and not permanently miscible with each other.

17 citations

Journal ArticleDOI
TL;DR: Using the drift angle stylet to injure the mucous membrane of the urinary bladder can establish a stable bladder transplantable tumor model in mice.
Abstract: Objective The present study aims to find a convenient, rapid, and stable method to establish bladder tumor in mice. Methods Female Balb/C-nu-nu nude mice (or female T739 mice) were narcotized by sodium pentobarbital at a dosage of 60 mg/kg. The stylet of the 24# venous retention needles was bent in a 5° to 7° angle at a distance of 15 mm from the needlepoint to form a circle with 2.61 mm to 3.66 mm radius when the stylet is rotated. The pipe casing was lubricated with liquid paraffin, and inserted into the bladder cavity. The drift angle stylet was inserted into the pipe casing slowly, rotated for five times, and then pulled out. A cell suspension (0.1 mL) of approximately 1×106 T24 cells (or BTT cells) was then injected immediately. Results A total of 60 T739 mice and 60 Balb/C-nu-nu nude mice were inoculated with BTT cells and T24 cells, respectively. The bladder tumor incidence and the average survival time of the tumor-bearing mice were 100% and (26.69±9.24) d and 100% and (34.59±9.8) d for the T739 mice and Balb/C-nu-nu nude mice, respectively. Conclusions Using the drift angle stylet to injure the mucous membrane of the urinary bladder can establish a stable bladder transplantable tumor mode l in mice.

17 citations

Journal ArticleDOI
TL;DR: In this article, the water in oil (W/O) emulsion of corn silk extract and its stability at various storage conditions was evaluated by monitoring these parameters over a period of 12 weeks at 8, 25, 40 and 40 o C, and 75 % RH.
Abstract: Purpose : To formulate the water in oil (W/O) emulsion of corn silk (CS) extract and to evaluate its stability at various storage conditions. Methods : Ethanol CS extract was prepared using maceration (cold) technique. A 4 % CS emulsion was prepared using varying concentrations of liquid paraffin, ABIL EM90 and water. The formulations were kept at 25 o C for 28 days and to screen out the less stable formulations. The remaining formulations were further stressed at 40 o C to choose the most stable formulation. The optimized formulation was evaluated for physical characteristics including phase separation, rheology and mean droplet size. The physical stability of the formulation was evaluated by monitoring these parameters over a period of 12 weeks at 8, 25, 40 and 40 o C, and 75 % RH. Results : The chosen formulation showed good resistance to phase separation on centrifugation under all storage conditions. Rheological behavior followed non-Newtonian pseudoplastic pattern at various storage conditions. Mean droplet size of freshly prepared formulation was 2.98 ± 1.32 μm and did not show significant (p < 0.05) changes at normal storage conditions (8 and 25 o C). Conclusion : The findings indicate that the developed CS extract W/O emulsion is stable and therefore may be suitable for topical use on skin as an antioxidant preparation. Keywords : Corn silk, Emulsion, Nonionic surfactant, Rheology, Flow index, Droplet size, Non-Newtonian pseudoplastic

17 citations

Patent
29 Sep 1994
TL;DR: In this article, the α-tocopheryl retinoate is added to a water-in-oil type emulsion system in an amount of 0.001-10wt.
Abstract: PURPOSE: To obtain a skin external agent remarkably improved in the stability of α-tocopheryl retinoate by adding the α-tocopheryl retinoate to a water-in-oil type emulsion system. CONSTITUTION: This skin external agent improved in the stability of the α- tocopheryl retinoate as an ingredient effective for preventing and treating skin hyperkeratosis, etc., and preventing and recovering skin aging is prepared by adding the α-tocopheryl retinoate to a water-in-oil type emulsion system comprising an oil component such as liquid paraffin or squalane, an aqueous phase component and a surfactant. The α-tocopheryl retinoate is preferably added in an amount of 0.001-10wt.%, especially 0.01-2.0wt.%, and the oil phase component is also preferably added in an amount of 10.0-50wt.%. The surfactant includes diglycerol dioleate and diglycerol diisostearate. Main additives to be added to the aqueous phase component are glycerol, butylene glycol, etc. The skin external agent is stable against heat, etc., and is little in the deterioration of the activity even when stored for a long period of time. COPYRIGHT: (C)1996,JPO

17 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
20239
202216
202168
2020146
2019277
2018417