WO2000053381A1 - Procedes pour la preparation d'un materiau composite moule, et agents de decollement a base de cire - Google Patents

Procedes pour la preparation d'un materiau composite moule, et agents de decollement a base de cire Download PDF

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Publication number
WO2000053381A1
WO2000053381A1 PCT/US2000/006099 US0006099W WO0053381A1 WO 2000053381 A1 WO2000053381 A1 WO 2000053381A1 US 0006099 W US0006099 W US 0006099W WO 0053381 A1 WO0053381 A1 WO 0053381A1
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WO
WIPO (PCT)
Prior art keywords
wax
oxidized wax
waxes
hardness
press plate
Prior art date
Application number
PCT/US2000/006099
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English (en)
Inventor
Marc Dekerf
Erich Erenrich
Original Assignee
Alliedsignal Inc.
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Alliedsignal Inc. filed Critical Alliedsignal Inc.
Priority to AU38724/00A priority Critical patent/AU3872400A/en
Priority to EP00917811A priority patent/EP1161331A1/fr
Priority to CA002362750A priority patent/CA2362750A1/fr
Priority to JP2000603849A priority patent/JP2003525767A/ja
Publication of WO2000053381A1 publication Critical patent/WO2000053381A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C33/00—Moulds or cores; Details thereof or accessories therefor
    • B29C33/56—Coatings, e.g. enameled or galvanised; Releasing, lubricating or separating agents
    • B29C33/60—Releasing, lubricating or separating agents
    • B29C33/62—Releasing, lubricating or separating agents based on polymers or oligomers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
    • B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
    • B27N3/08—Moulding or pressing
    • B27N3/083—Agents for facilitating separation of moulds from articles

Definitions

  • the present invention relates to improvements in processes for preparing molded articles such as oriented strand board, waferboard or plywood.
  • the invention relates to o processes which include select wax-based release agents which demonstrate enhanced utility in continuous molding processes for preparing molded articles.
  • molded lignocellulosic or wood-based products can be prepared using standard batch procedures or, more recently, using continuous techniques.
  • the s preparation of wood composites typically includes introducing an aqueous composite mixture of wood chips or the like between two heated metal plates which press and shape the composite mixture under pressure.
  • wax release agents in processes for the binding of lignocellulosic materials with polyisocyanates has also been previously described. See, for example, WO 98/00464, the contents of which are incorporated herein by reference. o WO 98/00464, however, discloses a broad range of waxes which are allegedly useful in emulsions as either internal or external release agents.
  • release agent emulsions can contain a wide spectrum of oxidized polyethylene waxes having a melting temperature of from 5 80 to 120°C, a viscosity of from 25 to 200 cps at 149°C , a hardness of from 0.5 to 98 dmm.
  • a wide range of polypropylene waxes are also disclosed as being useful.
  • an organic isocyanate binder such as a polyisocyanate, which is usually in the form of a solution or an aqueous emulsion, is applied to a lignocellulosic material which is then subjected to heat and pressure.
  • a polyisocyanate which is usually in the form of a solution or an aqueous emulsion
  • the quality of the resulting articles e.g. sheets or molded bodies such as chipboard or plywood, is largely due the adhesive properties of the organic polyisocyanates.
  • these adhesive polyisocyanates are the cause of significant problems during the molding process. For example, isocyanates often cause severe sticking of the lignocellulosic material to the hot metal press plate surfaces it is in contact with during the hot-pressing operation.
  • release agents are combined with the polyisocyanates as part of the binding emulsion. Such agents are typically referred to as internal release agents.
  • external release agents which are usually applied to the press surfaces which come into contact with the lignocellulosic composite mixture have been suggested.
  • conventional release agents such as oils, wax polishes, metallic soaps, silicones and polytetrafluoroethylene have been applied externally on the metal surfaces but have proved unsatisfactory.
  • release agents which have a desirable combination of several physical attributes, such as viscosity and hardness, to overcome the shortcomings associated with isocyanate-based binding systems.
  • some external release agents such as emulsions containing A-C ® 6702 wax, a product of AlliedSignal, Morristown, NJ having a viscosity of about 35 mPas, a droppoint of about 86.5°C and a hardness of about 83 dmm at 25°C, have good release properties and do not cause a build up on the forming belts.
  • the dried emulsion is deposited as small, white particles that are easily removed with compressed air.
  • release agent emulsions a problem often referred to as a plate-out.
  • release agents have some desirable properties and some undesirable properties. Some have sufficient hardness to form depositions around the spinning disk equipment which are easily removable, but the viscosity of these agents is too high to be absorbed by the wood. 5 Conversely, if the release agent has a viscosity which is low enough to be absorbed by the wood, and thereby solve the problem of plating-out, it is so soft that it leaves sticky deposits in the areas surrounding the spinning disks.
  • the process includes using a wax or wax-like release agent, preferably in emulsion form, having physical characteristics which fall within carefully defined specific ranges within those broad ranges described in the aforementioned '464 PCT publication.
  • the selected waxes unexpectedly provide release agent 15 emulsions which solve not only the overspray problems associated some release agent systems but also the plating out associated with other release agent systems.
  • the wax-based release agents of the present invention are thus especially well-suited for use in continuous molding processes.
  • the invention provides methods of preparing molded composite materials in a press plate- containing molding apparatus.
  • the methods include a) treating the surfaces of the press plates which contact a composite mixture with an effective amount of an oxidized wax which has a 5 Brookfield viscosity which is less than about 80 mPas at 1 9 °C, a droppoint of from about 80 to about 120°C and a hardness of less than about 18 decimillimeters (dmm) at 25 °C, prior to the composite mixture contacting the press plate surface, and b) applying the wax treated press plate surfaces to the composite mixture under conditions sufficient to mold the composite.
  • the waxes used in the process of the present invention have a Brookfield viscosity which is in the range of from about 5 mPas to about 50 mPas at 149°C and, in more preferred embodiments, the wax has a Brookfield viscosity which is in the range of from about 20mPas to about 40mPas at 149°C.
  • the droppoint of the wax is preferably from about 104 to about 115°C and more preferably is from about 110 to about 113°C.
  • the inventive process uses oxidized wax- based release agents having specific and controlled viscosity, hardness, crystallinity and melting point ranges as well as easy emulsifiability.
  • the combination of these properties substantially reduce and/or overcome the problems associated with prior art single wax-release agents used in combination with polyisocyanate binders, especially in continuous and semi- continuous molding processes.
  • the inventive emulsions can include one or more additional waxes in order to obtain additional release properties.
  • the supplemental wax(es) can be included in amounts which do not substantially detract from the advantageous release properties described herein. Depending upon the ingredient selected, the amount can range from less than 1% to up to about 50% or more by weight, if desired.
  • the waxes used in the inventive process preferably have a hardness of from about 0.1 to about 18 dmm. at 25°C. In alternative embodiments, the wax hardness ranges from about 2 to about 8 and preferably from about 4 to about 8 dmm at 25°C.
  • the oxidized waxes of the invention may have acid numbers of from about 14 to about 45 mg KOH/g. The preferred range is from about 16 to about 25. In general, although lower acid number products may be used, e.g. less than about 5, they often require higher amounts of surfactant for satisfactory emulsifiability. Oxidation of waxes is known in the art as a suitable way to render waxes dispersible in an aqueous medium to form an aqueous emulsion. In a typical process, the wax is placed in a suitable reactor vessel such as a pressure autoclave and subjected to sufficient heat and pressure while being sparged with air or oxygen. In the case of the release agents of the present invention, the oxidizing is carried out under relatively mild temperatures of from about 120 to about 160° C.
  • Preferred waxes include low viscosity, by-product waxes produced by the production of high density polyethylenes. Such waxes have a Brookfield viscosity of from about 20 to about 40 mPas at 149°C, a droppoint of from about 1 10 to about 1 14°C, and preferably about 110°C, and a hardness of from about 3 to about 6 dmm at 25°C, and preferably from about 4 to about 5 dmm. Furthermore, the preferred waxes have an acid number which is preferably from about 16 to about 24 mg KOH/g .
  • low viscosity shall be understood to mean oxidized waxes having a viscosity lower than about 80 mPas at 149°C and "high density” shall be understood to mean polyethylene waxes having a density ranging from about 0.96 to about 1.0.
  • waxes from among other known waxes, provided the above mentioned viscosity limitations are met.
  • suitable waxes include polyolefin-based waxes, low density and high density polyethylene waxes, preferably of low viscosity, polypropylene-based waxes both mildly oxidized and grafted with unsaturated acids as well as their metal base derivatives, Fischer-Troph waxes such as Sasol waxes.
  • Hydrocarbon waxes such as paraffins and microcrystalline waxes, fatty acid derivatives of waxy consistency such as free long chain fatty acids, metallic soaps, amides and esters falling with the viscosity, droppoint and hardness ranges described herein are also useful.
  • the release agent may also include other ingredients, including for example, natural waxes such as fatty acid derivatives of waxy consistency such as free long chain fatty acids, metallic soaps, amides and esters.
  • natural waxes such as fatty acid derivatives of waxy consistency such as free long chain fatty acids, metallic soaps, amides and esters.
  • Such products can be combined by emulsification or by high shear dispersion to form suitable agents for the processing of wood fiber chipboard. Additional dispersing agents or surfactants may be used to optimize the emulsification or dispersion processes as well as enhance processability.
  • process includes using an aqueous emulsion of the specific wax release agent.
  • Suitable aqueous emulsions according to the present invention can be made by any method known to those skilled in the art, such as by high shear mixing.
  • the emulsion is made using a direct pressure method which can include the steps of: charging all ingredients into a stirred pressure vessel; closing the vessel, agitating and heating the ingredients to about 120-125°C; maintaining the temperature for a time sufficient to allow an emulsion to form, e.g. about 15 minutes for usual-sized batches; and cooling the batch as quickly as possible to about room temperature (25-30°C) which will result in a clear emulsion forming.
  • the emulsions can be diluted with distilled or demineralized water from about 40% solids down to about 1% solids, if desired.
  • the emulsion will preferably further comprise an emulsifier or surfactant.
  • Suitable emulsifiers used can either be anionic, non-ionic or cationic. See, for example, the emulsifiers found in the aforementioned WO 98/00464 which was previous incorporated herein by reference.
  • the emulsifiers are generally used in an amount of about 1 to about 10 and preferably about 4 to about 7 wt % of the total emulsion.
  • One preferred emulsifier is Marlipal 013.90, an ethoxylated fatty alcohol with 9 moles ofethoxylation.
  • anionic emulsifiers or surfactants include carboxylates, sulphates, sulphonates and phosphates, such as alkylbenzene derivatives; alkyl ether carboxylic acids and salts, e.g., sodium alkyl ether carboxylates; alkyl sulphosuccinates, e.g., all-sodium monoalkylsulphosuccinate, sodium di-alkyl sulphosuccinates and disodium monoalkyl ethoxy sulphosuccinates; alpha olefin sulphonates; aromatic hydrocarbon sulphonic acids, e.g., benzene sulphonic acid blends, cumene sulphonic acid, phenol sulphonic acid, toluene sulphonic acid and xylene sulphonic acid; aromatic hydrocarbon sulfonate salts, e.g., ammonium xylene sulfon
  • the aqueous emulsion of the polyolefin wax useful in the present process should contain a sufficient amount of the wax release agent to provide a coverage of about 0.1 to about 0.9 and preferably about 0.2 to about 0.5 milligrams of the oxidized wax release agent per square cm of the lignocellulosic material.
  • the aqueous emulsions used in the present invention will contain about 1 to about 40%, and preferably about 1 to about 25% by weight of total solids.
  • emulsions containing the wax-based release agents of the present invention can be applied to the lignocellulosic material and/or press plate surfaces as a spray or liquid coating in an amount of from about 2 to about 35 and preferably about 8 to about 16 and most preferably about 10 milligram/square cm.
  • the amount of application can be varied as needed for a particular purpose.
  • aqueous emulsions of the present invention may also contain other additives known to those of ordinary skill, such as anti-foam agents such as Leasol 472 in amounts ranging from about 0.2 to about 1% by weight of the total emulsion, biocides such as Mergal K14, ranging from about 0.2 to about 0.4% by weight of the total emulsion, flame retardants, lignocellulosic preserving agents, fungicides, waxes, sizing agents, fillers, surfactant, other binders and catalysts in amounts which are standard in the industry when so included.
  • anti-foam agents such as Leasol 472 in amounts ranging from about 0.2 to about 1% by weight of the total emulsion
  • biocides such as Mergal K14, ranging from about 0.2 to about 0.4% by weight of the total emulsion
  • flame retardants lignocellulosic preserving agents
  • fungicides fungicides
  • waxes waxes
  • wax based release agent emulsion as described above in a process for binding lignocellulosic material with polyisocyanates provides improved release and shortened downtime for cleaning when compared to the conventional processes. Board properties are not detrimentally influenced. These wax-based release agents in emulsions are effective over a wide temperature range. Thus, higher press temperatures can be used (up to 235°C) which speed up the cure process.
  • Suitable lignocellulosic-containing raw materials which may be used in the processes of the present invention include all types known in the industry, such as wood strands, wood chips, wood fibers, shavings, veneers, wood wool, cork, tree bark, sawdust and similar waste products of the woodworking industry as well as other materials having a lignocellulosic basis such as paper, bagasse, straw, flax, sisal fibers and coconut fibers, hemp, rushes, reeds, rice hulls, husks, grass, nutshells, bamboo, alfalfa grass and the like.
  • the lignocellulosic material may be mixed with other paniculate or fibrous materials such as mineral fillers, glass fiber, mica, rubber, textile waste such as plastic fibers and fabrics.
  • These raw materials may be in the form of granules, chips, fibers or powders and may have a water content of from 0 to 35 wt. % (preferably from 5 to 25 wt. %).
  • the composite mixture will also contain a binder such as a polyisocyanate, described in more detail below, and molded generally with the application of heat and pressure to form boards or shaped products. Molded products may, of course, also be produced in accordance with the present invention from other organic (e.g. plastic waste of all kinds) and/or inorganic raw materials (e.g. expanded mica or silicate pellets).
  • the organic polyisocyanates which are useful as lignocellulosic binders in the present invention include any organic polyisocyanate compound or mixture of organic polyisocyanate compounds which are known to those of ordinary skill.
  • a non-limiting representative list of polyisocyanates includes diisocyanates, particularly aromatic diisocyanates, and isocyanates of higher functionality; aliphatic isocyanates such as hexamethylene diisocyanate; aromatic isocyanates, such as m and p-phenylene diisocyanate, tolylene-2,4- and -2,6-diisocyanate, diphenylmethane-4,4'-diisocyanate, chlorophenylene-2,4-diisocyanate, naphthylene- 1 ,5-diisocyanateldiphenylene 4,4- diisocyanate, 4,4'-diisocyanate-3,3'-dimethyldiphenyl, 3-methyldiphenylmethane
  • Modified polyisocyanates containing isocyanurate, carbodiimide or uretonimine groups may also be used according to the present invention.
  • blocked polyisocyanates such as the reaction product of a phenol or an oxide and a polyisocyanate, having a deblocking temperature below the temperature applied when using the polyisocyanate composition may be utilized as the organic polyisocyanate binder. Mixtures of the foregoing are also contemplated.
  • the organic polyisocyanate binder is generally applied to the lignocellulosic material in an amount of about 0.1 to about 25% weight, preferably about 1 to about 10 and most preferably about 2 to about 6 % by weight based upon the dry weight of the lignocellulosic material.
  • the boards or molded articles based on lignocellulose-containing other organic and/or inorganic raw materials produced in accordance with the present invention are particularly suitable for use in the building industry because of their excellent mechanical properties.
  • the usual commercial additives such as organic or inorganic protective agents
  • These additives are generally used in a quantity of about 0.05 to 30 wt. %, preferably 0.5 to 20 wt. %, based on the entire quantity of composite.
  • Solvents which may be used in the present invention include water and organic solvents such as residual oils from the petroleum industry, chlorinated hydrocarbons, etc. These solvents generally do not impair adhesive quality.
  • the materials produced in accordance with the present invention have the advantage that neither efflorescence of salt nor "bleeding" occurs.
  • the lignocellulosic material is brought into contact with the organic polyisocyanate binder material by means of mixing, blending, spraying and/or spreading the polyisocyanate composition with or onto the lignocellulosic material.
  • Such application may generally take place in a conventional blender.
  • the treated lignocellulosic material is formed into a mat, preferably upon a screen.
  • the treated lignocellulosic material is then conveyed to a press where pressure is applied thereto at elevated temperatures.
  • the pressing operation generally consists of pressing at 120°C to 260°C at pressures of about 2 to 6 MPa.
  • Such binding processes are commonly known in the art.
  • the emulsion containing the selected wax is used as an external release agent.
  • the emulsion is then preferably applied to the surface of the mat of polyisocyanate treated lignocellulosic material. It will be understood by those of ordinary skill that it may be helpful, but not essential, to condition or "prime" the caul plates of the pressing equipment at the start of a manufacturing run by spraying their surfaces with the emulsion of the present invention or any other conventional external release agent. A preconditioned press may then be used many times without further treatment. Alternatively, boards can be pressed continuously between endless steel belts which are coated with the inventive emulsion prior to starting and periodically as needed in presses having the temperature and pressure requirements discussed above.
  • the selected waxes of the present invention can also be used in processes for molding articles as internal release agents, if desired without undue experimentation using standard techniques.
  • the polyolefin wax emulsion can be pre-mixed with a suitable polyisocyanate binder and applied to a lignocellulosic material as one stream. This route is advisable when the polyisocyanate is used as an aqueous emulsion or suspension.
  • the oxidized wax emulsion and the polyisocyanate binder are applied, preferably simultaneously, to the lignocellulosic material as two separate streams.
  • the weight ratio of the oxidized wax emulsion/polyisocyanate composition is in the range of from about 1 : 10 to about 3 : 1 and preferably about 1 : 1. See also, for example, the aforementioned WO 98/00464.
  • OSB oriented strand board
  • processes of the present invention and waxes included therewith are particularly suitable for the manufacture of oriented strand board (OSB), they are not limited in this regard.
  • the processes can also be used in the manufacture of various types of composite structures, such as medium density fiberboard, particle board (also known as chipboard) and plywood.
  • emulsions were prepared using the waxes and the formulations provided below. Both of the emulsion formulations are suitable for external application to the metal plates of a oriented strand board molding press. Several different emulsions were prepared, each with a different wax but otherwise according to the formulations set forth below.
  • the waxes used in the emulsions were either low viscosity, by-product waxes prepared by the production of high density polyethylenes having a Brookfield viscosity of from about 20 to about 40 mPas at 149°C, a droppoint of from about 1 10 to about 1 14°C and a hardness of from about 3 to about 6 dmm at 25°C or other waxes meeting the physical characteristics for hardness, viscosity and droppoint set forth above.
  • Emulsion formulation 1
  • the wax was charged into a pressure vessel equipped with an agitator along with the surfactant, potassium hydroxide, sodium meta-bisulfite and water.
  • the pressure vessel was sealed and then heated to an internal temperature of 125°C at which point the mixture was rapidly agitated for 15 minutes while the temperature was maintained at 125°C.
  • the pressure vessel was then rapidly cooled to room temperature to form the emulsion.
  • EXAMPLE 2 In this example, the emulsions made in Example 1 are compared against each other and a reference standard to observe the differences in the various physical characteristics and differences in release performance.
  • woodchips 5 mesh are sprayed with a 50/50 emulsion of a polyisocyanate composition (SUPRASEC 1042, available from Imperial Chemical Industries) and one of the release wax emulsions of Example lat 6% loading based on dry wood.
  • Wood moisture content before blending was estimated to be about 2% ; Press platen temperature: 195°C; Press factor: 15 sec/mm; Board size: 200 mm x 400 MM X 4 mm; caul plates: sandblasted mild steel; density: 650 kg/m 3 .
  • the release performance was assessed using the release test procedure described below. Release test procedure
  • the test included the following steps:
  • the board is firmly attached to the caul plate and needs a lot more force to be released. 10-50% wood failure. 2 The board is stuck to the caul plate but still-can be removed from it in one piece.
  • Example 1 several of the emulsions made in Example 1 are tested as external release agents on a Conti-roll OSB apparatus.
  • the emulsions are tested against A-C 6702 and A-C 659.
  • the results unexpectedly show that the emulsions made with waxes having a Brookfield viscosity of less than about 80 mPas at 149°C, a droppoint of between 80-120 °C and a hardness of less than about 18 dmm at 25 °C have superior release performance in comparison to the reference standard.
  • the molding processes carried out with the emulsions containing the waxes having the inventive viscosity, droppoint and hardness do not demonstrate the overspray problems or plating out problems associated with emulsions using waxes having physical characteristics outside the ranges described herein.

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Dry Formation Of Fiberboard And The Like (AREA)

Abstract

La présente invention concerne des procédés permettant la préparation de matériaux composites moulés tels que des panneaux de particules orientées, des panneaux de grandes particules, ou du contre-plaqué dans un appareil à plateaux de compression, avec utilisation de cires et d'émulsions contenant cette cire présentant des caractéristiques physiques respectant des plages de définition spécifiques. Ce procédé consiste a) en un traitement des surfaces des plateaux de presse de l'appareil à mouler en contact avec une quantité suffisante d'une cire oxydée d'une viscosité de Brookfield inférieure à 80 mPas à 149°C, d'un point de goutte d'environ 80°C à environ 120°C, et d'une dureté inférieure à environ 18 décimillimètres (dmm) à 25°C, préalablement au contact du matériau composite avec les surfaces des plateaux de presse. Ce procédé consiste ensuite b) en l'application des surfaces des plateaux de presse traitées à la cire sur le mélange composite dans des conditions convenant au moulage du composite.
PCT/US2000/006099 1999-03-12 2000-03-09 Procedes pour la preparation d'un materiau composite moule, et agents de decollement a base de cire WO2000053381A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
AU38724/00A AU3872400A (en) 1999-03-12 2000-03-09 Processes for preparing molded composite material and wax-based release agents
EP00917811A EP1161331A1 (fr) 1999-03-12 2000-03-09 Procedes pour la preparation d'un materiau composite moule, et agents de decollement a base de cire
CA002362750A CA2362750A1 (fr) 1999-03-12 2000-03-09 Procedes pour la preparation d'un materiau composite moule, et agents de decollement a base de cire
JP2000603849A JP2003525767A (ja) 1999-03-12 2000-03-09 成形複合材を製造する方法及びワックスベースの剥離剤

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US12430799P 1999-03-12 1999-03-12
US60/124,307 1999-03-12

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WO2000053381A1 true WO2000053381A1 (fr) 2000-09-14

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EP (1) EP1161331A1 (fr)
JP (1) JP2003525767A (fr)
AU (1) AU3872400A (fr)
CA (1) CA2362750A1 (fr)
PL (1) PL350544A1 (fr)
WO (1) WO2000053381A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
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EP2332946A1 (fr) 2009-12-10 2011-06-15 Evonik Goldschmidt GmbH Agent de séparation et utilisation pour la fabrication de corps moulés composites
WO2012007242A1 (fr) 2010-07-15 2012-01-19 Evonik Goldschmidt Gmbh Procédé de fabrication de corps moulés à partir de matériaux contenant de la cellulose
US8377359B2 (en) 2005-05-06 2013-02-19 Evonik Goldschmidt Gmbh Process for the production of moldings from cellulose-containing materials
EP2424961A4 (fr) * 2009-04-30 2015-07-22 Honeywell Int Inc Sels métalliques d'un sous-produit constitué de polyéthylène de faible masse moléculaire oxydé, en tant que lubrifiants pour pvc

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JP7010744B2 (ja) * 2017-04-03 2022-02-10 ユシロ化学工業株式会社 木質系材料流動成形加工用潤滑剤組成物

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US4766166A (en) * 1987-02-13 1988-08-23 Moore And Munger Marketing And Refining, Inc. Compositions having the properties of low viscosity polyethylenes
WO1989011502A1 (fr) * 1988-05-24 1989-11-30 Eastman Kodak Company Systemes d'additifs aqueux, procedes et particules polymeres
WO1998000464A1 (fr) * 1996-07-01 1998-01-08 Imperial Chemical Industries Plc Procede pour lier une matiere lignocellulosique

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Publication number Priority date Publication date Assignee Title
US4608407A (en) * 1983-08-09 1986-08-26 Bayer Aktiengesellschaft Process for the production of compression-molded materials containing polyisocyanate binders using latent, heat activatable catalysts
US4766166A (en) * 1987-02-13 1988-08-23 Moore And Munger Marketing And Refining, Inc. Compositions having the properties of low viscosity polyethylenes
WO1989011502A1 (fr) * 1988-05-24 1989-11-30 Eastman Kodak Company Systemes d'additifs aqueux, procedes et particules polymeres
WO1998000464A1 (fr) * 1996-07-01 1998-01-08 Imperial Chemical Industries Plc Procede pour lier une matiere lignocellulosique

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8377359B2 (en) 2005-05-06 2013-02-19 Evonik Goldschmidt Gmbh Process for the production of moldings from cellulose-containing materials
EP2424961A4 (fr) * 2009-04-30 2015-07-22 Honeywell Int Inc Sels métalliques d'un sous-produit constitué de polyéthylène de faible masse moléculaire oxydé, en tant que lubrifiants pour pvc
EP2332946A1 (fr) 2009-12-10 2011-06-15 Evonik Goldschmidt GmbH Agent de séparation et utilisation pour la fabrication de corps moulés composites
DE102009047764A1 (de) 2009-12-10 2011-06-16 Evonik Goldschmidt Gmbh Trennmittel und Verwendung zur Herstellung von Kompositformkörpern
US9120827B2 (en) 2009-12-10 2015-09-01 Evonik Degussa Gmbh Release agent and use for the production of composite mouldings
WO2012007242A1 (fr) 2010-07-15 2012-01-19 Evonik Goldschmidt Gmbh Procédé de fabrication de corps moulés à partir de matériaux contenant de la cellulose
DE102010031376A1 (de) 2010-07-15 2012-01-19 Evonik Goldschmidt Gmbh Verfahren zur Herstellung von Formkörpern aus Cellulose enthaltenden Materialien

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AU3872400A (en) 2000-09-28
JP2003525767A (ja) 2003-09-02
EP1161331A1 (fr) 2001-12-12
CA2362750A1 (fr) 2000-09-14
PL350544A1 (en) 2002-12-16

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