WO1998045390A1 - Food grade wax and process for preparing same - Google Patents
Food grade wax and process for preparing same Download PDFInfo
- Publication number
- WO1998045390A1 WO1998045390A1 PCT/AU1998/000234 AU9800234W WO9845390A1 WO 1998045390 A1 WO1998045390 A1 WO 1998045390A1 AU 9800234 W AU9800234 W AU 9800234W WO 9845390 A1 WO9845390 A1 WO 9845390A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- wax
- solvent
- process according
- heating
- iii
- Prior art date
Links
Classifications
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23G—COCOA; COCOA PRODUCTS, e.g. CHOCOLATE; SUBSTITUTES FOR COCOA OR COCOA PRODUCTS; CONFECTIONERY; CHEWING GUM; ICE-CREAM; PREPARATION THEREOF
- A23G4/00—Chewing gum
- A23G4/06—Chewing gum characterised by the composition containing organic or inorganic compounds
- A23G4/066—Chewing gum characterised by the composition containing organic or inorganic compounds characterised by the fat used
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23C—DAIRY PRODUCTS, e.g. MILK, BUTTER OR CHEESE; MILK OR CHEESE SUBSTITUTES; MAKING OR TREATMENT THEREOF
- A23C19/00—Cheese; Cheese preparations; Making thereof
- A23C19/14—Treating cheese after having reached its definite form, e.g. ripening, smoking
- A23C19/16—Covering the cheese surface, e.g. with paraffin wax
- A23C19/163—Covering the cheese surface, e.g. with paraffin wax with a non-edible liquid or semi-liquid coating, e.g. wax, polymer dispersions
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23D—EDIBLE OILS OR FATS, e.g. MARGARINES, SHORTENINGS OR COOKING OILS
- A23D9/00—Other edible oils or fats, e.g. shortenings or cooking oils
- A23D9/007—Other edible oils or fats, e.g. shortenings or cooking oils characterised by ingredients other than fatty acid triglycerides
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23G—COCOA; COCOA PRODUCTS, e.g. CHOCOLATE; SUBSTITUTES FOR COCOA OR COCOA PRODUCTS; CONFECTIONERY; CHEWING GUM; ICE-CREAM; PREPARATION THEREOF
- A23G3/00—Sweetmeats; Confectionery; Marzipan; Coated or filled products
- A23G3/34—Sweetmeats, confectionery or marzipan; Processes for the preparation thereof
- A23G3/346—Finished or semi-finished products in the form of powders, paste or liquids
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23G—COCOA; COCOA PRODUCTS, e.g. CHOCOLATE; SUBSTITUTES FOR COCOA OR COCOA PRODUCTS; CONFECTIONERY; CHEWING GUM; ICE-CREAM; PREPARATION THEREOF
- A23G4/00—Chewing gum
- A23G4/06—Chewing gum characterised by the composition containing organic or inorganic compounds
- A23G4/068—Chewing gum characterised by the composition containing organic or inorganic compounds containing plants or parts thereof, e.g. fruits, seeds, extracts
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23G—COCOA; COCOA PRODUCTS, e.g. CHOCOLATE; SUBSTITUTES FOR COCOA OR COCOA PRODUCTS; CONFECTIONERY; CHEWING GUM; ICE-CREAM; PREPARATION THEREOF
- A23G4/00—Chewing gum
- A23G4/06—Chewing gum characterised by the composition containing organic or inorganic compounds
- A23G4/08—Chewing gum characterised by the composition containing organic or inorganic compounds of the chewing gum base
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23P—SHAPING OR WORKING OF FOODSTUFFS, NOT FULLY COVERED BY A SINGLE OTHER SUBCLASS
- A23P20/00—Coating of foodstuffs; Coatings therefor; Making laminated, multi-layered, stuffed or hollow foodstuffs
- A23P20/10—Coating with edible coatings, e.g. with oils or fats
- A23P20/11—Coating with compositions containing a majority of oils, fats, mono/diglycerides, fatty acids, mineral oils, waxes or paraffins
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11B—PRODUCING, e.g. BY PRESSING RAW MATERIALS OR BY EXTRACTION FROM WASTE MATERIALS, REFINING OR PRESERVING FATS, FATTY SUBSTANCES, e.g. LANOLIN, FATTY OILS OR WAXES; ESSENTIAL OILS; PERFUMES
- C11B11/00—Recovery or refining of other fatty substances, e.g. lanolin or waxes
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23G—COCOA; COCOA PRODUCTS, e.g. CHOCOLATE; SUBSTITUTES FOR COCOA OR COCOA PRODUCTS; CONFECTIONERY; CHEWING GUM; ICE-CREAM; PREPARATION THEREOF
- A23G2200/00—COCOA; COCOA PRODUCTS, e.g. CHOCOLATE; SUBSTITUTES FOR COCOA OR COCOA PRODUCTS; CONFECTIONERY; CHEWING GUM; ICE-CREAM; PREPARATION THEREOF containing organic compounds, e.g. synthetic flavouring agents
- A23G2200/08—COCOA; COCOA PRODUCTS, e.g. CHOCOLATE; SUBSTITUTES FOR COCOA OR COCOA PRODUCTS; CONFECTIONERY; CHEWING GUM; ICE-CREAM; PREPARATION THEREOF containing organic compounds, e.g. synthetic flavouring agents containing cocoa fat if specifically mentioned or containing products of cocoa fat or containing other fats, e.g. fatty acid, fatty alcohol, their esters, lecithin, paraffins
Definitions
- This invention relates to a wax composition suitable for use in comestibles.
- the invention also relates to a process for preparing the composition.
- waxes added during preparation of the comestible.
- wax is a component of chewing gum base.
- Waxes can also be used as protective coatings on comestibles such as cheeses and fruits.
- the waxes used for such purposes are typically mineral waxes such as montan wax extracted from lignites, peat waxes, ceresin wax and petroleum waxes.
- mineral waxes such as montan wax extracted from lignites, peat waxes, ceresin wax and petroleum waxes.
- mineral waxes it appears that only petroleum based waxes are used in food applications: microcrystalline waxes, high melting point waxes and high sulfur microcrystalline waxes in particular.
- mineral waxes are extracted from coal and crude petroleum oil. These raw materials contain organic chemicals which are toxic to humans.
- the food applicability of the waxes depends on the degree of refining or purification achieved and its usage has been regulated according to the specifications provided by authorities such as Ministry of Agriculture, Fisheries and Food, UK (The Mineral Hydrocarbons in Food Regulation, SI 1966 No. 1073. This regulation applies to England and Wales only, though similar regulations apply to Scotland and Northern Ireland).
- the refining achieved has been acceptable to food regulating authorities.
- the palm Copernicia cerifera is a source of the common wax, carnauba. Waxes can also be extracted from sugar cane and rice. Subject to the conditions used for extraction, waxes of plant origin should provide an alternative to mineral waxes for use in comestibles.
- Sugar production results in a number of by-products, one of which is mill mud.
- Mill mud comprises crude wax and fats, fibre, sugar, crude protein and ash (SiO 2 , CaO, P 2 O 5 and MgO).
- a crude cane wax can be extracted from mill mud.
- the crude wax is unsuitable for use in comestibles as it has a foul odour and taste and is dark green to brown in colour due to the presence of contaminants.
- US Patent No. 2,464,189 describes a process for the refining of sugar cane wax. However, wax produced by this process is unsuitable for use in comestibles for the following reasons:
- Bleaching uses reagents such as chromic and sulfuric acid which are not food grade reagents.
- the object of this invention is to provide a sugar cane wax composition, and a process for preparing the composition, which wax is suitable for use in comestibles.
- the invention provides a wax composition comprising on a weight basis: wax esters, 6.2-11%; aldehydes, 2.8-9.5%; triglycerides, 0- 3.0%; alcohols, 1.8-44.5%; and, free fatty acids, sterols and polar lipids, 36.8-87.2%.
- the invention provides a process for preparing a wax composition from crude sugar cane wax, the process comprising the steps of: i) heating a solution of the crude wax with a lower alcohol as solvent at the boiling point of the solvent; ii) allowing phase separation of the solution from (i) and decanting the upper phase while hot; iii) allowing the separated phase from (ii) to cool and separating crystallised wax from the solvent; iv) repeating steps (i) to (iii) using the wax from (iii) until all pitch has been removed from the wax; v) heating the wax to between 90 and 140°C and oxidising molten wax with oxidising material; and vi) continuing the heating under an inert gas on completion of the oxidation step until intermediate peroxide products are removed.
- the invention provides the wax composition product of the process according to the second aspect and comestibles which include a wax composition according to the first aspect or as the product of the process according to the second aspect.
- a wax composition suitable for inclusion in comestibles can be obtained from sugar cane.
- the composition is essentially odourless and colourless, desirable properties for compositions used as a comestible base or for coating comestibles.
- Typical components of the wax composition according to the first aspect of the invention are set out in Table I below.
- the numbers in the table are the numbers of carbon atoms typically found in a member of a functional group. However, it will be appreciated that a member of a group may have a number of carbon atoms falling outside the indicated range.
- Members of groups are mostly straight chain saturated and unsaturated hydrocarbons.
- Tri-Glycerides T48-T54 total number of carbon in the acyl group
- C16-C18 number of carbons in each acyl group
- the polar lipids in the wax are essentially amphipathic molecules, having a hydrophobic fatty acid part and a hydrophilic domain.
- the three which are commonly found are phosphoglycerides, in which fatty acids are esterified with an alcohol (glycerol) which contain a phosphate group, glycosyl diglycerides in which the fatty acids are esterified with an alcohol (glycerol) which contains a carbohydrate (sugars) and sphingolipids in which the fatty acids are esterified with an alcohol (glycerol) which contains amino groups.
- the method of refining the crude sugar cane wax involves heating the crude wax with an organic solvent to allow the pitch and the paler wax fraction to separate. These form two distinct phases, which can be separated by decantation.
- the paler wax fraction is cooled to allow the wax to crystallise and separate from the oil which remains soluble in the organic solvent.
- the wax is filtered until dry.
- the wax is melted over a hot bath and oxidised by blowing fine air bubbles through a sparger. This is continued until oxidation is complete noticeable by lack of any further increase in temperature — arising from the exothermic nature of the reaction — and colour change.
- the solvent used in step (i) of the process is typically ethanol or iso- propanol which have boiling points of 78.5°C and 82.4°C, respectively.
- the crude wax is typically combined with solvent at a ratio of one part (by weight) wax to nine parts solvent although ratios of 1 :8 to 1 :20 can also be used. Heating can be for 5 to 60 minutes although a heating time of about 30 minutes is usually adequate.
- the upper phase formed in step (ii) contains the wax of interest.
- the lower phase is a resinous fraction referred to as "pitch" which contains wax of lower quality.
- step (iii) filtration or centrifugation are advantageously used to separate wax from oil-containing solvent.
- other methods known to those of skill in the art can be used.
- Steps (i) to (iii) are repeated from 2 to typically no more than 5 times.
- the number of times the steps are repeated largely depends on the amount of pitch present in the crude wax, the rate with which the pitch settles and the rate of wax crystallisation. It appears that pitch that does not settle fast enough is occluded within the wax crystals.
- the heating of the wax in step (v) of the process is advantageously carried out under an oxygen-free gas.
- the oxygen-free gas is typically an inert gas such as nitrogen.
- the oxidising material used in step (V) can be chromic acid, potassium permanganate, transition metals such as salts of noble metals such as platinum and palladium, pentavalent vanadium, cobalt (III), cerium (IV) thallium (III), mercury (II), cupric solutions, specific enzymes, and oxygen gas (see R. Stewart, Oxidation Mechanisms, Application to Organic Chemistry", W.A. Benjamin Inc., 1964).
- Preferred oxidising materials are air, oxygen, or mixtures of oxygen, nitrogen and ozone.
- step (vi) one of skill in the art would be able to determine when removal of the intermediate peroxide products is complete. Completion typically takes from 30 minutes to 2 hours.
- the inert gas used in this step is typically nitrogen.
- oxidation can be enhanced by using a catalyst.
- Suitable catalysts include cobalt or manganese borates and resinates (A.J.C. Andersen, Refining of Oils and Fats for Edible Purposes, Second Revised Edition, P.N. Williams, ed., Pergamon Press, 1962), ferrous salts, and Fenton's reagent which consists of ferrous salts and H 2 0 2 (Roger A Sheldon and Jay K. Kochi, Metal Catalyzed Oxidations of Organic Compounds, Academic Press, 1981).
- step (vi) of the process according to the second aspect of the invention can be further decolourised, if desired, with adsorbents or by pitch inducement.
- adsorbents or by pitch inducement.
- Suitable adsorbents include activated carbons, resins, activated alumina and silica. Carbons obtained from commercial sources are satisfactory and with a wax to carbon ratio of 1 :3 white wax can be produced.
- step (v) Wax from step (v) is heated with a lower alcohol as solvent at the boiling point of the solvent for 30 to 60 minutes with wax to activated carbon ratios of between 1 :0.5 and 1 :3.
- step (v) Wax from step (v) is heated with a lower alcohol as solvent at the boiling point of the solvent for 30 to 60 minutes with wax to activated carbon ratios of between 1 :0.5 and 1 :3.
- step (v) Wax from step (v) is heated with a lower alcohol as solvent at the boiling point of the solvent for 30 to 60 minutes with wax to activated carbon ratios of between 1 :0.5 and 1 :3.
- b) The molten slurry is filtered hot.
- c) The wax and solvent recovered is cooled until the wax crystallises and is separated by filtration.
- colour can be removed without the use of adsorbents.
- the method involves heat treatment and fractionation which results in waxes of various intensity of colour from a golden yellow to cream.
- step (a) Wax from step (v) is heated with a lower alcohol as solvent at the boiling point of the solvent for 30 to 60 minutes.
- Wax from (c) is heat treated at 80 to 110°C in the absence of solvent for typically 15 minutes to 3 hours.
- Steps (a) to (d) are repeated until the desired colour grade is achieved.
- the crude sugar cane wax can be prepared by methods known to those of skill in the art. A suitable method is described, for example, in US Patent No. 2,508,002, the entire content of which is incorporated herein by cross-reference. A brief description of a suitable process follows. Crude Wax Extraction Sugar filter cake is steam heated and charged to a continuous reactor where it is mixed with solvent (naphtha) and held at the desired temperature and pressure. Wax is extracted into the solvent, which is subsequently separated from the filter cake. The separated wax-containing solvent is then passed through a flash drum and an evaporator to separate the crude wax from the solvent. The resulting filter cake is then steam stripped to recover residual solvent.
- composition of crude sugar cane wax is typically as presented in Table II.
- Table II Composition of Crude Sugar Cane Wax
- the process produces a potential food grade vegetable wax product, which can be used as a replacement for mineral waxes in a number of food or non-food applications, including (but not limited to) chewing gum base, cheese coating, and fruit coating. 2)
- the process is simple and of low cost and enables economic use of wax for applications indicated in (1).
- the wax product is colourless or has low colour (pale yellow) and little or no odour and taste.
- the wax product has a hardness comparable to carnauba wax.
- the wax product has good temperature stability as compared to other vegetable waxes, such as carnauba and rice wax.
- Example 1 Multiple portions of wax composition were prepared as follows: one hundred grams of crude sugar cane wax was combined with 900 grams of ethanol in a round bottom flask. The mixture was heated in a heating mantle to 78.5°C for 30 minutes under reflux. The solution was removed from the heating mantle and the phases of pitch and the paler wax were allowed to separate. The paler wax was decanted into another round bottom flask while the wax mixture was still in solution or only partially crystallised at 65 to 75°C. The mixture was again heated to 78.5°C for 10 minutes. The paler wax was decanted to separate it from the pitch. The heating and separation processes were repeated about four times or until no visible pitch separated from the paler wax.
- the pitch was reheated with about 100 grams of ethanol to recover additional paler wax. This was combined with the previously collected paler wax.
- the paler wax was then cooled slowly to room temperature and then in an ice bath.
- the cooled wax was filtered and remelted in a hot bath, in the presence of nitrogen, at a temperature between 90 and 140°C.
- Air or ozone was blown into the molten wax by means of a sparger until the temperature of the wax stabilised to a constant value or until there was no further visible change in the colour of the wax.
- the overall process was executed within several hours depending on the temperature and air distribution.
- Wax composition produced by the above process had the following properties: pale yellow in colour with a sweet smell and little or no taste.
- the compositions of waxes are summarised in the following table. Table III
- Component Composition (% w/w)
- Tri-Glyceride 0.5-3.0 0.5-3
- wax composition was again prepared.
- One hundred grams of crude sugar cane wax was combined with 900 grams of isopropanol in a round bottom flask. The mixture was heated in a heating mantle to 82.4°C. The mixture was cooled slowly to room temperature and then in an ice bath. The wax was filtered and transferred into another round bottom flask. To the wax, 450 grams of ethanol was added and the mixture heated to 78.5°C for 30 minutes. Fractionation and oxidation of this wax was carried out as in Example 1.
- Wax composition produced by the above process had the following properties: pale yellow in colour with a sweet smell and little or no taste.
- Compositions obtained are summarised in the following table.
- Component Composition (% w/w)
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Polymers & Plastics (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Botany (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Fats And Perfumes (AREA)
- Steroid Compounds (AREA)
- Edible Oils And Fats (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Description
Claims
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP54214898A JP2001521562A (en) | 1997-04-07 | 1998-04-07 | Food grade wax and method for producing the same |
HK00105909.9A HK1026710B (en) | 1997-04-07 | 1998-04-07 | Food grade wax and process for preparing same |
EP98912160A EP0975716A4 (en) | 1997-04-07 | 1998-04-07 | WAX OF FOOD QUALITY AND METHOD FOR THE PRODUCTION THEREOF |
AU67139/98A AU719777B2 (en) | 1997-04-07 | 1998-04-07 | Food grade wax and process for preparing same |
BR9808103-9A BR9808103A (en) | 1997-04-07 | 1998-04-07 | Food grade wax and process for preparing it |
CA002286121A CA2286121A1 (en) | 1997-04-07 | 1998-04-07 | Food grade wax and process for preparing same |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AUPO6050 | 1997-04-07 | ||
AUPO6050A AUPO605097A0 (en) | 1997-04-07 | 1997-04-07 | Food grade wax and process for preparing same |
Related Child Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US09402362 A-371-Of-International | 1999-10-04 | ||
US10/682,513 Continuation US20040076732A1 (en) | 1997-04-07 | 2003-10-10 | Food grade wax and process for preparing same |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1998045390A1 true WO1998045390A1 (en) | 1998-10-15 |
Family
ID=3800349
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/AU1998/000234 WO1998045390A1 (en) | 1997-04-07 | 1998-04-07 | Food grade wax and process for preparing same |
Country Status (8)
Country | Link |
---|---|
EP (1) | EP0975716A4 (en) |
JP (1) | JP2001521562A (en) |
CN (1) | CN1085244C (en) |
AU (1) | AUPO605097A0 (en) |
BR (1) | BR9808103A (en) |
CA (1) | CA2286121A1 (en) |
CU (1) | CU22832A3 (en) |
WO (1) | WO1998045390A1 (en) |
Cited By (19)
Publication number | Priority date | Publication date | Assignee | Title |
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EP1080643A1 (en) * | 1999-08-31 | 2001-03-07 | Unilever Plc | Blends for barrier layers for food products |
AU732045B2 (en) * | 1997-04-02 | 2001-04-12 | Laboratorios Dalmer Sa | Mixture of primary fatty acids obtained from sugar cane wax |
US6461654B1 (en) | 1999-08-31 | 2002-10-08 | Unilever Patent Holdings Bv | Blends for barrier layers for food products |
US8021443B2 (en) | 2001-09-25 | 2011-09-20 | Elevance Renewable Sciences, Inc. | Triacylglycerol based wax composition |
US8070833B2 (en) | 2001-05-11 | 2011-12-06 | Elevance Renewable Sciences, Inc. | Triacyglycerol based candle wax |
US8157873B2 (en) | 2003-05-08 | 2012-04-17 | Elevance Renewable Sciences, Inc. | Wax and wax-based products |
US8202329B2 (en) | 2000-03-06 | 2012-06-19 | Elevance Renewable Sciences, Inc. | Triacylglycerol-based alternative to paraffin wax |
US8344052B2 (en) | 2006-07-12 | 2013-01-01 | Elevance Renewable Sciences, Inc. | Hot melt adhesive compositions comprising metathesized unsaturated polyol ester wax |
US8500826B2 (en) | 2010-03-10 | 2013-08-06 | Elevance Renewable Sciences, Inc. | Lipid-based wax compositions substantially free of fat bloom and methods of making |
US8551194B2 (en) | 2007-05-30 | 2013-10-08 | Elevance Renewable Sciences, Inc. | Prilled waxes comprising small particles and smooth-sided compression candles made therefrom |
US8603197B2 (en) | 2007-02-16 | 2013-12-10 | Elevance Renewable Sciences, Inc. | Wax compositions and methods of preparing wax compositions |
US8641814B2 (en) | 2010-05-12 | 2014-02-04 | Elevance Renewable Sciences, Inc. | Natural oil based marking compositions and their methods of making |
US8652221B2 (en) | 2007-06-15 | 2014-02-18 | Elevance Renewable Sciences, Inc. | Hybrid wax compositions for use in compression molded wax articles such as candles |
US8685118B2 (en) | 2005-01-10 | 2014-04-01 | Elevance Renewable Sciences, Inc. | Candle and candle wax containing metathesis and metathesis-like products |
US9139801B2 (en) | 2011-07-10 | 2015-09-22 | Elevance Renewable Sciences, Inc. | Metallic soap compositions for various applications |
US9249360B2 (en) | 2010-07-09 | 2016-02-02 | Elevance Renewable Sciences, Inc. | Compositions derived from metathesized natural oils and amines and methods of making |
US9458411B2 (en) | 2010-11-23 | 2016-10-04 | Cargill, Incorporated | Lipid-based wax compositions substantially free of fat bloom and methods of making |
EP3713903A4 (en) * | 2017-11-20 | 2021-08-25 | Praj Industries Limited | HIGH PRESSURE CLEANING OF WAXES |
CN114196440A (en) * | 2020-09-17 | 2022-03-18 | 内蒙古伊泰煤基新材料研究院有限公司 | Production device and production method of Fischer-Tropsch wax product |
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JP4936273B2 (en) * | 2005-03-01 | 2012-05-23 | ボーソー油脂株式会社 | Method for producing refined rice wax |
BR112015006768A2 (en) * | 2012-10-20 | 2017-07-04 | Clariant Finance Bvi Ltd | rice bran oxidation waxy products |
DE102014005404A1 (en) * | 2014-04-14 | 2015-10-15 | Kahl GmbH & Co. KG | Process for the preparation of animal and vegetable waxes |
WO2016142953A2 (en) * | 2015-03-10 | 2016-09-15 | Praj Industries Limited | Method for the purification of waxes |
CN105349182B (en) * | 2015-12-01 | 2017-12-29 | 中国矿业大学 | The catalysis oxidation reagent system and method for a kind of lignite wax oxidative decoloration |
CN109609283A (en) * | 2018-12-27 | 2019-04-12 | 广西仙草堂制药有限责任公司 | A kind of purification sweet wormwood wax and preparation method thereof |
CU24732B1 (en) * | 2021-07-13 | 2025-02-07 | Centro Nac De Investigaciones Cientificas | MIXTURE OF COMPOUNDS WITH HIGH MOLECULAR WEIGHTS, OBTAINED FROM SUGAR CANE WAX (SACCHARUM OFFICINARUM L.) |
CN119614296A (en) * | 2024-12-17 | 2025-03-14 | 浙江大学 | A method for extracting plant wax from lignansterol byproducts |
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GB712048A (en) * | 1951-06-11 | 1954-07-14 | John David Morgan | Sugar cane wax |
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DE2855263C2 (en) * | 1978-12-21 | 1983-11-24 | Hoechst Ag, 6230 Frankfurt | Process for the continuous oxidative bleaching of raw montan wax |
JPH0711285Y2 (en) * | 1986-11-27 | 1995-03-15 | 三菱重工業株式会社 | Gas recirculation boiler |
DE3815179A1 (en) * | 1988-05-04 | 1989-11-16 | Schmidt Geb Ganzenmueller Trau | SILK CYLINDER (SILK FELT), METHOD FOR THE PRODUCTION THEREOF AND THE COMPOSITION FOR IMPLEMENTING THE METHOD |
JP2719158B2 (en) * | 1988-10-25 | 1998-02-25 | 株式会社セラリカ野田 | Sugar Ken Wax Purification Method |
JPH06200287A (en) * | 1992-12-28 | 1994-07-19 | Nippon Petrochem Co Ltd | Purification method of natural crude wax |
-
1997
- 1997-04-07 AU AUPO6050A patent/AUPO605097A0/en not_active Abandoned
-
1998
- 1998-04-07 WO PCT/AU1998/000234 patent/WO1998045390A1/en not_active Application Discontinuation
- 1998-04-07 CN CN98803932A patent/CN1085244C/en not_active Expired - Fee Related
- 1998-04-07 BR BR9808103-9A patent/BR9808103A/en active Search and Examination
- 1998-04-07 JP JP54214898A patent/JP2001521562A/en active Pending
- 1998-04-07 CA CA002286121A patent/CA2286121A1/en not_active Abandoned
- 1998-04-07 EP EP98912160A patent/EP0975716A4/en not_active Withdrawn
-
1999
- 1999-09-17 CU CU1999138A patent/CU22832A3/en unknown
Non-Patent Citations (6)
Cited By (26)
Publication number | Priority date | Publication date | Assignee | Title |
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Also Published As
Publication number | Publication date |
---|---|
CN1252090A (en) | 2000-05-03 |
AUPO605097A0 (en) | 1997-05-01 |
HK1026710A1 (en) | 2000-12-22 |
CA2286121A1 (en) | 1998-10-15 |
CN1085244C (en) | 2002-05-22 |
CU22832A3 (en) | 2003-01-29 |
JP2001521562A (en) | 2001-11-06 |
BR9808103A (en) | 2000-03-08 |
EP0975716A4 (en) | 2002-10-09 |
EP0975716A1 (en) | 2000-02-02 |
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