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WO2015112490A1 - Soufre résistant aux chocs - Google Patents

Soufre résistant aux chocs Download PDF

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Publication number
WO2015112490A1
WO2015112490A1 PCT/US2015/012023 US2015012023W WO2015112490A1 WO 2015112490 A1 WO2015112490 A1 WO 2015112490A1 US 2015012023 W US2015012023 W US 2015012023W WO 2015112490 A1 WO2015112490 A1 WO 2015112490A1
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WIPO (PCT)
Prior art keywords
oil
sulfur
carbon black
lampblack
derivative
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/US2015/012023
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English (en)
Inventor
Garrard Lee Hargrove
Robert Scott Wilson
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Nutrien US LLC
Original Assignee
Agrium Advanced Technologies US Inc
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Filing date
Publication date
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Publication of WO2015112490A1 publication Critical patent/WO2015112490A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B17/00—Sulfur; Compounds thereof
    • C01B17/02—Preparation of sulfur; Purification
    • C01B17/0243—Other after-treatment of sulfur
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/36—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing sulfur, sulfides or selenium
    • C—CHEMISTRY; METALLURGY
    • C05—FERTILISERS; MANUFACTURE THEREOF
    • C05D—INORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C; FERTILISERS PRODUCING CARBON DIOXIDE
    • C05D9/00—Other inorganic fertilisers
    • C—CHEMISTRY; METALLURGY
    • C05—FERTILISERS; MANUFACTURE THEREOF
    • C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
    • C05G5/00—Fertilisers characterised by their form
    • C05G5/30—Layered or coated, e.g. dust-preventing coatings
    • C05G5/36—Layered or coated, e.g. dust-preventing coatings layered or coated with sulfur
    • C—CHEMISTRY; METALLURGY
    • C05—FERTILISERS; MANUFACTURE THEREOF
    • C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
    • C05G5/00—Fertilisers characterised by their form
    • C05G5/45—Form not covered by groups C05G5/10 - C05G5/18, C05G5/20 - C05G5/27, C05G5/30 - C05G5/38 or C05G5/40, e.g. soluble or permeable packaging
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2006/00—Physical properties of inorganic compounds
    • C01P2006/21—Attrition-index or crushing strength of granulates

Definitions

  • This invention relates to modified sulfur, particularly, with increased impact
  • Sulfur is a by-product of petroleum oil refining and, being a by-product, is relatively inexpensive. Because of this, sulfur is used in many applications where a relatively low melting material (melting point of approximately 110°C - 119°C) can be sprayed or molded. Some common applications for sulfur include: as a component in marking paint for roads and other high wear applications, as a protective coating for concrete block walls and tank walls, as a component in encapsulates for toxic contaminants, as an additive in asphalt or bituminous binders, and as a major constituent in the coating of many urea controlled release products (e.g., fertilizers).
  • urea controlled release products e.g., fertilizers
  • the present disclosure provides sulfur formulations having a carbon black material (e.g., lampblack) and a naturally derived oil, such as vegetable oil, or its derivative.
  • the modified sulfur has an impact resistance greatly improved over other sulfur formulations.
  • the modified sulfur can be used, for example, in sulfur coating controlled release fertilizer products.
  • the sulfur can additionally or alternately be used in any application that would benefit from an increased impact resistance.
  • the present invention relates to modification of sulfur by the addition of lampblack or other carbon black and a naturally derived oil, such as vegetable oil, or its derivatives.
  • a naturally derived oil such as vegetable oil, or its derivatives.
  • the addition of these two ingredients to sulfur substantially increases the resistance of the modified sulfur to impact damage.
  • the combination of carbon black plus inexpensive oils, like vegetable oil, constitutes a much more effective, less dangerous and less expensive system for sulfur modification than the prior art.
  • the sulfur prior to being modified, may be elemental sulfur, which can be
  • Sources that provide sulfur including primary sulfur sources and recovered (recycled) sulfur sources.
  • the modified sulfur includes at least 0.1 wt % of carbon black.
  • Carbon black is a generic term for a family of products that is used principally for the reinforcement of rubber, as a black pigment and because of its electrically conductive properties. It has Chemical Abstracts Service (CAS) Registry # 1333-86-4. It is an extremely fluffy fine powder with a large surface area and is composed essentially of elemental carbon. Carbon black is one of the most stable chemical products. In general, it is the most widely used nano-material and its aggregate dimension ranges from tens to a few hundred nanometers (nm).
  • the carbon black materials is often referred to by different names, including lampblack, furnace black or oil furnace black, acetylene black, channel black, and thermal black.
  • Furnace black, or oil furnace black represents the major volume of carbon black production.
  • lampblack is the preferred carbon black for the modified sulfur formulations of this disclosure, the other examples of carbon blacks (e.g., furnace black or oil furnace black, acetylene black, channel black, and thermal black) are also suitable.
  • Lampblack typically, has an average primary particle size of 50-100 nm, a BET surface area of 20-95 m 2 /g, a dibutyl phthalate absorption value of 105-165 ml/ 100 g, a pH of about 3-7, solvent extractables (benzene) of 0.00-1.4, and a volatile content at 950°C of 0.4-9%.
  • Lampblack 101 One particular lampblack, available from Degussa under the designation "Flamruss 101,” has an average primary particle size of 95 nm, a BET surface area of20 m 2 /g, a dibutyl phthalate absorption value of 117 ml/100 g, a pH of about 7.5, solvent extractables (toluene) of 0.10 maximum, and a volatile content at 950°C of 1%.
  • the modified sulfur includes at least 0.1 wt % of carbon black (e.g., lampblack), and no more than 10 wt %.
  • the modified sulfur includes 0.25 to 7 wt % carbon black, 0.5 to 5 wt % carbon black, or 0.5 to 2 wt % carbon black.
  • the amount of carbon black include 0.5, 0.6, 0.7, 0.8, 0.9, 1, 1.0, 1.1, 1.2, 1.3, 1.4, 1.5, 2, 2.0, 3, 3.0, 4, 4.0, 5 and 5.0 wt %.
  • the modified sulfur includes at least 0.5 wt % of a naturally derived oil or its
  • a naturally derived oil broadly, is a triglyceride extracted from a plant or seed of a plant. Bi general, the oil is at least partially unsaturated and in some embodiments may be fully unsaturated.
  • Naturally derived oils that are suitable for the modified sulfur formulation include vegetable oil (e.g., soybean oil, canola oil, corn oil), sunflower oil, safflower oil, rapeseed oil, castor oil, cottonseed oil, peanut oil, castor oil, linseed oil, and nut oil (e.g., tung oil, walnut oil).
  • Epoxidized oils such as castor oil, epoxidized sunflower oil, epoxidized linseed oil, etc. may also be suitable.
  • Oil derivatives include mono- and di-glycerides, and can be obtained from generally any oil, including soybean oil.
  • the glycerides may be used as pure mono-glycerides or pure di-glycerides, or may be used as a blend, such as a 55/45 blend of mono-/di-glycerides.
  • Oil in general, is not soluble in molten sulfur, and thus floats on the sulfur surface when no agitation is present (e.g., when the stirrer is turned off).
  • no agitation e.g., when the stirrer is turned off.
  • the modified sulfur includes at least 0.5 wt % of a naturally derived oil or its derivative(s), and no more than 25 wt %.
  • the modified sulfur includes 1 to 10 wt % oil or derivative(s), or 1 to 5 wt %.
  • Non-limiting specific examples of the amount of naturally derived oil or its derivative(s) include 0.5, 1, 1.0, 1.5, 2, 2.0, 3, 3.0, 4, 4.0, 5, 5.0, 6, 7, 8, and 10 wt %.
  • a catalyst or catalyst system may be added to the modified sulfur formulation, separate from or together with the oil or its derivative(s).
  • the presence of the catalyst increases the rate of sulfur modification through reaction with the oil, in some embodiments by about a factor of four.
  • the presence of the catalyst system does not yield much, if any, additional resistance to impact over a sulfur formulation having the same amount of oil and no catalyst.
  • the level of catalyst or catalyst system is no more than 1.8 wt % of the modified sulfur formulation, typically no more than 0.5 wt %.
  • Suitable catalysts or catalyst systems include components that will catalyze the vulcanization of rubber with sulfur.
  • a non-limiting example of a suitable catalyst system comprises steric acid, zinc oxide, tetramethyl thiuram disulfide (TMTD, or THI AM), and mercaptobenzthiazole disulfide (MBTS).
  • the impact resistance is increased at least three times (3x) over the impact resistance of sulfur without carbon black and oil or oil derivative(s), and in other embodiments at least four times (4x).
  • This impact resistance increase remains constant over time, for example, months and years, after formation of the modified sulfur.
  • the resistance to impact may be quantified by various tests that measure the samples resistance to cracking or breaking due to an impact (force) on the sample; ASTM D 2444 is one suitable test.
  • Examples of the modified sulfur formulation can be made by the following general procedure: Lampblack (e.g., FLAMRUSS 101 from DEGUSSA) or other carbon black is stirred into molten sulfur (140°C-150°C), for example with a magnetic stirring bar set at a stirring speed that develops a vortex in the sulfur. After 60 minutes, a naturally derived oil, such as vegetable oil, derivatives of the oil, or oil and catalyst(s), is slowly added to the stirring sulfur/lampblack mixture. After the addition of the oil component is complete, the modified sulfur mixture is stirred for an additional 2 hours at 140°C-150°C with the stirrer still set at a speed that develops a vortex. The resulting sulfur/lampblack/oil blend is preferably homogeneous with no lumps.
  • Lampblack e.g., FLAMRUSS 101 from DEGUSSA
  • molten sulfur 140°C-150°C
  • a naturally derived oil such as vegetable oil, derivatives of the oil, or oil and catalyst(s
  • a sulfur test coupon for the test below, is produced by pouring molten sulfiir, or modified sulfur, into a mold and allowing the molten material to solidify before removing the test coupon.
  • a metal sphere (4.47 mm in diameter, weighing 0.34 grams) is dropped through a 6.35 mm (1/4 inch) inside diameter polyethylene tube of varying lengths held directly and vertically over a 17 mm x 25 mm x 2 mm thick sulfur test coupon placed on 4 layers of paper towels.
  • the height that a test coupon survives after one impact, but not a second impact, is defined as the "impact distance survived" for the test coupon.
  • Example 1 SULFUR ONLY f COMPARATIVE EXAMPLE : 250.00 grams of sulfur were melted in a 250 ml beaker suspended in an oil bath maintained at 145°C + 5°C by a hot plate/magnetic stirrer. A Teflon-coated magnetic stirring bar was added to the beaker, and the molten sulfur was stirred with the stirring bar at sufficient rpms to generate a deep vortex. The beaker containing the molten sulfur was removed from the oil bath and the molten sulfur was poured into a silicone mold and allowed to solidify to form 17 mm x 25 mm x 2 mm test specimens.
  • Example 2 SULFUR + 2.0% LAMPBLACK (COMPARATIVE EXAMPLE):
  • Example 3 SULFUR + 4.0% LAMPBLACK fCOMPARATIVE EXAMPLE
  • Example 4 SULFUR + 2.0% MICA fCOMPARATIVE EXAMPLE: This example is similar to that taught in U.S. Patent No. 4,026,719. 150.0 grams of sulfur were melted and stirred as in Example 1, and 3.06 grams of Alsibronz 06 (mica) were slowly added to the well-stirred sulfur. The sulfur/Alsibronz 06 mixture was stirred for a total of 60 minutes while maintained at 145°C + 5°C. . The beaker containing the sulfur/Alsibronz 06 dispersion was then removed from the oil bath and the dispersion was poured into a silicone mold and allowed to solidify to form 17 mm x 25 mm x 2 mm test specimens.
  • Example 5 SULFUR + 2.0% LAMPBLACK + 2.0% MICA
  • the beaker containing the sulfur/Alsibronz 06 Flamruss 101 dispersion was then removed from the oil bath and the dispersion was poured into a silicone mold and allowed to solidify to form 17 mm x 25 mm x 2 mm test specimens.
  • Example 6 SULFUR + 2.0% LAMPBLACK + 2.0%
  • DICYCLOPENTADIENE COMPONENT EXAMPLE: This example is similar to that taught in U.S. Patent Nos.4,190,460 and US 4,311,826. 150.0 grams of sulfur were melted and stirred as in Example 1, except the initial temperature was held at 130°C + 5°C and 3.13 grams of Flamruss 101 lampblack and 3.13 grams of DCPD were slowly added and stirred for 105 minutes. The temperature was then increased to 164°C + 5°C and the reaction mixture was stirred for an additional 40 minutes. The reaction mixture was then poured into a silicone mold and allowed to solidify to form 17 mm x 25 mm x 2 mm test specimens.
  • Example 7 SULFUR + 1.0% LAMPBLACK + 1.89% SOYBEAN OIL: 150.00 grams of sulfur were melted and stirred as in Example 1, and 1.54 grams of Flamruss 101 lampblack were added. Stirring was continued for 60 minutes while the dispersion of lampblack in sulfur was maintained at 145°C + 5°C. 2.92 grams of soybean oil were then slowly added to the stirred dispersion of lampblack in sulfur and stirring was continued for 120 minutes with the sulfur/lampblack/soybean oil dispersion being maintained at temperature. At the end of 120 minutes, the stirrer was turned off and no soybean oil, or solids, was visible on the surface of the static, hot liquid. The reaction mixture was then poured into a silicone mold and allowed to solidify to form 17 mm x 25 mm x 2 mm test specimens.
  • Example 8 SULFUR + 1.0% LAMPBLACK + 2.82% SOYBEAN OIL: 150.00 grams of sulfur were melted and stirred as in Example 1, and 1.56 grams of Flamruss 101 lampblack were added. Stirring was continued for 60 minutes while the dispersion of lampblack in sulfur was maintained at 145°C + 5°C. 4.40 grams of soybean oil were then slowly added to stirred dispersion of lampblack in sulfur and stirring was continued for 120 minutes with the sulfur/lampblack/soybean oil dispersion being maintained at temperature. At the end of 120 minutes, the stirrer was turned off and no soybean oil, or solids, was visible on the surface of the static, hot liquid. The reaction mixture was then poured into a silicone mold and allowed to solidify to form 17 mm x 25 mm x 2 mm test specimens.
  • Example 9 SULFUR + 1.0% LAMPBLACK + 4.66% SOYBEAN OIL: 150.00 grams of sulfur were melted and stirred as in Example 1, and 1.59 grams of Flamruss 101 lampblack were added. Stirring was continued for 60 minutes while the dispersion of lampblack in sulfur was maintained at 145°C + 5°C. 7.41 grams of soybean oil were then slowly added to stirred dispersion of lampblack in sulfur and stirring was continued for 120 minutes with the sulfur/lampblack/soybean oil dispersion being maintained at temperature. The stirrer was turned off briefly at 10 minutes, 20 minutes, 30 minutes, and 60 minutes to check for the presence of soybean oil on the surface of the sulfur/lampblack dispersion.
  • Soybean oil was visible until the full 120 minute reaction period had been reached. At the end of 120 minutes, the stirrer was turned off and no soybean oil, or solids, was visible on the surface of the static, hot liquid. The reaction mixture was then poured into a silicone mold and allowed to solidify to form 7 mm x 25 mm x 2 mm test specimens.
  • Example 10 SULFUR + 1.0% LAMPBLACK + 9.31% SOYBEAN OIL:
  • Example 11 SULFUR + 1.0% LAMPBLACK + 4.66% CASTOR OIL: 300.00 grams of sulfur were melted and stirred as in Example 1, and 3.18 grams of Flamruss 101 lampblack were added. Stirring was continued for 60 minutes while the dispersion of lampblack in sulfur was maintained at 145°C + 5°C. 14.82 grams of castor oil were then slowly added to stirred dispersion of lampblack in sulfur and stirring was continued for 120 minutes with the sulfur/lampblack/castor oil dispersion being maintained at temperature. At the end of 120 minutes, the stirrer was turned off and no castor oil, or solids, was visible on the surface of the static, hot liquid. The reaction mixture was then poured into a silicone mold and allowed to solidify to form 17 mm x 25 mm x 2 mm test specimens.
  • Example 12 SULFUR + 1.0% LAMPBLACK + 4.66% LINSEED OIL:
  • Example 2 250.00 grams of sulfur were melted and stirred as in Example 1, and 2.65 grams of Flamruss 101 lampblack were added. Stirring was continued for 60 minutes while the dispersion of lampblack in sulfur was maintained at 145°C + 5°C. 12.35 grams of linseed oil were then slowly added to stirred dispersion of lampblack in sulfur and stirring was continued for 120 minutes with the sulfur/lampblack/linseed oil dispersion being maintained at temperature. At the end of 120 minutes, the stirrer was turned off and no linseed oil, or solids, was visible on the surface of the static, hot liquid. The reaction mixture was then poured into a silicone mold and allowed to solidify to form 17 mm x 25 mm x 2 mm test specimens.
  • SOYBEAN OIL GLYCERTOES 250.00 grams of sulfur were melted and stirred as in Example 1, and 2.65 grams of Flamruss 101 lampblack were added. Stirring was continued for 60 minutes while the dispersion of lampblack in sulfur was maintained at 145°C + 5°C. 12.35 grams of 55/45 mono/di soybean oil glycerides were then slowly added to stirred dispersion of lampblack in sulfur and stirring was continued for 120 minutes with the sulfur/lampblack/55/45 mono/di soybean oil glycerides dispersion being maintained at temperature. At the end of 120 minutes, the stirrer was turned off and no 55/45 mono/di soybean oil glycerides, or solids, were visible on the surface of the static, hot liquid. The reaction mixture was then poured into a silicone mold and allowed to solidify to form 17 mm x 25 mm x 2 mm test specimens.
  • Example 14 SULFUR + 1.0% LAMPBLACK + 2.0% SOYBEAN
  • OIL/CATALYST SYSTEM The following components were combined and mixed and heated at 100°C for 60 minutes to form an oil/catalyst system (SBOCAT) blend.
  • SBOCAT oil/catalyst system
  • Example 2 150 grams of sulfur was then melted and stirred as in Example 1, and 1.55 grams of Flamruss 101 lampblack were added and stirring was continued at temperature for 60 minutes. 3.09 grams of the above SBOCAT blend (i.e., blend of soybean oil and catalyst system) were then slowly added to the sulfur/lampblack dispersion and stirring was continued at temperature for 120 minutes. At the end of 120 minutes, the stirrer was turned off, and no soybean oil, or solids, was visible on the surface of the static, hot liquid. The reaction mixture was then poured into a silicone mold and allowed to solidify to form 17 mm x 25 mm x 2 mm test specimens.
  • SBOCAT blend i.e., blend of soybean oil and catalyst system
  • Example 15 SULFUR + 1.0% LAMPBLACK + 3.0% SOYBEAN
  • OIL/CATALYST SYSTEM 150 grams of sulfur was melted and stirred as in Example 1, and 1.56 grams of Flamruss 101 lampblack were added and stirring was continued at temperature for 60 minutes. 4.69 grams of the SBOCAT blend as prepared in Example 14 were then slowly added to the sulfur/lampblack dispersion and stirring was continued at temperature for 120 minutes. At the end of 120 minutes, the stirrer was turned off, and no soybean oil, or solids, was visible on the surface of the static, hot liquid. The reaction mixture was then poured into a silicone mold and allowed to solidify to form 17 mm x 25 mm x 2 mm test specimens.
  • Example 16 SULFUR + 1.0% LAMPBLACK + 4.0% SOYBEAN
  • OIL/CATALYST SYSTEM 150 grams of sulfur was melted and stirred as in Example 1, and 1.57 grams of Flamruss 101 lampblack were added and stirring was continued at temperature for 60 minutes. 6.32 grams of the SBOCAT blend as prepared in Example 14 were then slowly added to the sulfur/lampblack dispersion and stirring was continued at temperature for 120 minutes. At the end of 120 minutes, the stirrer was turned off, and no soybean oil, or solids, was visible on the surface of the static, hot liquid. The reaction mixture was then poured into a silicone mold and allowed to solidify to form 17 mm x 25 mm x 2 mm test specimens.
  • Example 17 SULFUR + 1.0% LAMPBLACK + 5.0% SOYBEAN
  • OIL/CATALYST SYSTEM 150 grams of sulfur was melted and stirred as in Example 1, and 1.60 grams of Flamruss 101 lampblack were added and stirring was continued at temperature for 60 minutes. 7.98 grams of the SBOCAT blend as prepared in Example 14 were then slowly added to the sulfur/lampblack dispersion and stirring was continued at temperature for 30 minutes, with the stirrer being turned off briefly at 10 minutes and 20 minutes. At the end of 30 minutes, the stirrer was turned off, and no soybean oil, or solids, was visible on the surface of the static, hot liquid. The reaction mixture was then poured into a silicone mold and allowed to solidify to form 17 mm x 25 mm x 2 mm test specimens.
  • Example 18 SULFUR + 2.0% LAMPBLACK + 5.0% SOYBEAN
  • OIL/CATALYST SYSTEM 150 grams of sulfur was melted and stirred as in Example 1, and 3.23 grams of Flamruss 101 lampblack were added and stirring was continued at temperature for 60 minutes. 8.06 grams of the SBOCAT blend as prepared in Example 14 were then slowly added to the sulfur/lampblack dispersion and stirring was continued at temperature for 120 minutes. At the end of 120 minutes, the stirrer was turned off, and no soybean oil, or solids, was visible on the surface of the static, hot liquid. The reaction mixture was then poured into a silicone mold and allowed to solidify to form 17 mm x 25 mm x 2 mm test specimens. [0043] Example 19: SULFUR + Q.5% LAMPBLACK + 5.0% SOYBEAN
  • OIL/CATALYST SYSTEM A sample was made by the process generally described above, resulting in a modified sulfur having 0.5% lampblack
  • Example 20 SULFUR + 2% LAMPBLACK + 12% SOYBEAN
  • OIL/CATALYST SYSTEM A sample was made by the process generally described above, resulting in a modified sulfur having 2% lampblack (FLAMRUSS 101) and 12% SBOCAT blend. The formulation yielded large amounts of solids floating on the surface of the molten modified sulfur.
  • Examples 1-18 were subject to the following Impact Test: 6.35 mm (1/4 inch) inside diameter polyethylene pipes of varying length were attached to 15.9 mm by 15.9 mm (5/8 inch by 5/8 inch) wooden back supports, and held vertically by a heavy duty ring stand. The bottom of the pipe was positioned 2 centimeters directly above the test specimen, which was placed on 4 sheets of paper towels inside a

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Abstract

L'invention concerne des formulations modifiées de soufre présentant un matériau de type noir de carbone (par exemple du noir de lampe) et une huile d'origine naturelle, telle qu'une huile végétale, ou son dérivé. Le soufre modifié présente une résistance aux chocs grandement améliorée par rapport à d'autres formulations de soufre. Le soufre modifié peut par exemple être utilisé dans des produits d'engrais à libération contrôlée revêtus de soufre. Le soufre peut en plus ou en variante être utilisé dans une quelconque application qui profiterait d'une résistance augmentée aux chocs.
PCT/US2015/012023 2014-01-21 2015-01-20 Soufre résistant aux chocs Ceased WO2015112490A1 (fr)

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US201461929664P 2014-01-21 2014-01-21
US61/929,664 2014-01-21

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021149839A1 (fr) * 2020-01-20 2021-07-29 안필호 Soufre modifié et sa méthode de préparation
WO2022239882A1 (fr) * 2021-05-11 2022-11-17 안필호 Composition de mortier de soufre modifié et composition de béton de soufre modifié comprenant ladite composition de mortier de soufre modifié

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US3674525A (en) * 1970-02-25 1972-07-04 Phillips Petroleum Co Plasticized sulfur compositions
US4026719A (en) 1974-12-03 1977-05-31 Chevron Research Company Sulfur composition with mica
US4190460A (en) 1978-04-03 1980-02-26 Suntech, Inc. Sulfur plasticization with olefins
US4311826A (en) 1979-10-16 1982-01-19 The United States Of America As Represented By The United States Department Of Commerce Modified sulfur cement
US6824600B2 (en) 2000-05-23 2004-11-30 Shell Canada Limited Paving binders and manufacturing methods
US6863724B2 (en) 2001-08-09 2005-03-08 Shell Canada Limited Sulfur additives for paving binders and manufacturing methods
US20130164625A1 (en) * 2011-12-22 2013-06-27 Arumugam Manthiram Sulfur-carbon composite cathodes for rechargeable lithium-sulfur batteries and methods of making the same

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1667697A1 (de) * 1968-01-26 1971-07-22 Claus Dr Rathjen Verfahren zur Herstellung von Schwefelpulver mit verminderter Neigung zu elektrostatischer Aufladung
US3674525A (en) * 1970-02-25 1972-07-04 Phillips Petroleum Co Plasticized sulfur compositions
US4026719A (en) 1974-12-03 1977-05-31 Chevron Research Company Sulfur composition with mica
US4190460A (en) 1978-04-03 1980-02-26 Suntech, Inc. Sulfur plasticization with olefins
US4311826A (en) 1979-10-16 1982-01-19 The United States Of America As Represented By The United States Department Of Commerce Modified sulfur cement
US6824600B2 (en) 2000-05-23 2004-11-30 Shell Canada Limited Paving binders and manufacturing methods
US6863724B2 (en) 2001-08-09 2005-03-08 Shell Canada Limited Sulfur additives for paving binders and manufacturing methods
US20130164625A1 (en) * 2011-12-22 2013-06-27 Arumugam Manthiram Sulfur-carbon composite cathodes for rechargeable lithium-sulfur batteries and methods of making the same

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021149839A1 (fr) * 2020-01-20 2021-07-29 안필호 Soufre modifié et sa méthode de préparation
GB2599888A (en) * 2020-01-20 2022-04-20 Ho Ahn Phi Modified sulfur and production method thereof
CN115210178A (zh) * 2020-01-20 2022-10-18 安必浩 改性硫及其生产方法
US11975966B2 (en) 2020-01-20 2024-05-07 Phil Ho Ahn Modified sulfur and production method thereof
GB2599888B (en) * 2020-01-20 2025-04-23 Ho Ahn Phil Modified sulfur and production method thereof
WO2022239882A1 (fr) * 2021-05-11 2022-11-17 안필호 Composition de mortier de soufre modifié et composition de béton de soufre modifié comprenant ladite composition de mortier de soufre modifié

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