WO2011011590A1 - Composite bois/plastique réticulé - Google Patents

Composite bois/plastique réticulé Download PDF

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Publication number
WO2011011590A1
WO2011011590A1 PCT/US2010/042883 US2010042883W WO2011011590A1 WO 2011011590 A1 WO2011011590 A1 WO 2011011590A1 US 2010042883 W US2010042883 W US 2010042883W WO 2011011590 A1 WO2011011590 A1 WO 2011011590A1
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WO
WIPO (PCT)
Prior art keywords
cross
weight percent
linking agent
composite
thermoplastic
Prior art date
Application number
PCT/US2010/042883
Other languages
English (en)
Inventor
Peter R. Dluzneski
Original Assignee
Arkema 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 Arkema Inc. filed Critical Arkema Inc.
Publication of WO2011011590A1 publication Critical patent/WO2011011590A1/fr

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    • 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
    • C04B28/02—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 hydraulic cements other than calcium sulfates
    • C04B28/04—Portland cements
    • 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
    • C04B28/14—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 calcium sulfate cements
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08H—DERIVATIVES OF NATURAL MACROMOLECULAR COMPOUNDS
    • C08H8/00—Macromolecular compounds derived from lignocellulosic materials
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/01—Use of inorganic substances as compounding ingredients characterized by their specific function
    • C08K3/011—Crosslinking or vulcanising agents, e.g. accelerators
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/01—Use of inorganic substances as compounding ingredients characterized by their specific function
    • C08K3/013—Fillers, pigments or reinforcing additives
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00—Use of organic ingredients
    • C08K5/0008—Organic ingredients according to more than one of the "one dot" groups of C08K5/01 - C08K5/59
    • C08K5/0025—Crosslinking or vulcanising agents; including accelerators
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L1/00—Compositions of cellulose, modified cellulose or cellulose derivatives
    • C08L1/02—Cellulose; Modified cellulose
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L23/04—Homopolymers or copolymers of ethene
    • C08L23/06—Polyethene
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L23/04—Homopolymers or copolymers of ethene
    • C08L23/08—Copolymers of ethene
    • C08L23/0846—Copolymers of ethene with unsaturated hydrocarbons containing other atoms than carbon or hydrogen atoms
    • C08L23/0853—Vinylacetate
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L23/10—Homopolymers or copolymers of propene
    • C08L23/12—Polypropene
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L25/00—Compositions of, homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring; Compositions of derivatives of such polymers
    • C08L25/02—Homopolymers or copolymers of hydrocarbons
    • C08L25/04—Homopolymers or copolymers of styrene
    • C08L25/06—Polystyrene
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L25/00—Compositions of, homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring; Compositions of derivatives of such polymers
    • C08L25/02—Homopolymers or copolymers of hydrocarbons
    • C08L25/04—Homopolymers or copolymers of styrene
    • C08L25/08—Copolymers of styrene
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L27/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers
    • C08L27/02—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L27/04—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
    • C08L27/06—Homopolymers or copolymers of vinyl chloride
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L33/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides or nitriles thereof; Compositions of derivatives of such polymers
    • C08L33/04—Homopolymers or copolymers of esters
    • C08L33/06—Homopolymers or copolymers of esters of esters containing only carbon, hydrogen and oxygen, which oxygen atoms are present only as part of the carboxyl radical
    • C08L33/10—Homopolymers or copolymers of methacrylic acid esters
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L33/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides or nitriles thereof; Compositions of derivatives of such polymers
    • C08L33/18—Homopolymers or copolymers of nitriles
    • C08L33/20—Homopolymers or copolymers of acrylonitrile
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L97/00—Compositions of lignin-containing materials
    • C08L97/02—Lignocellulosic material, e.g. wood, straw or bagasse
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/14—Polymer mixtures characterised by other features containing polymeric additives characterised by shape
    • C08L2205/16—Fibres; Fibrils
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/91—Use of waste materials as fillers for mortars or concrete

Definitions

  • the present invention relates to a cross-linked plastic/natural cellulosic fiber composite, and more specifically to a composite wherein the plastic is cross-linked via a peroxide cross-linking initiator and having gypsum and/or Portland cement incorporated therein resulting in a composite which exhibits a significant reduction in water absorption.
  • Wood plastic composites are blends of cellulosic fibers such as wood flour, plastic (e.g. polyethylene, polypropylene or polyvinyl chloride), and other ingredients that are gaining prominence in the construction industry as a material for siding, decking, fencing, and other structural forms.
  • wood flour is dry mixed with pulverized plastic along with other ingredients and then extruded at high temperatures (300° F to 400° F) during which time the wood mixes with the molten plastic.
  • high temperatures 300° F to 400° F
  • the boards Upon exiting the extruder, the boards are then cooled quickly, usually with a water spray so that they retain their physical shape.
  • High density polyethylene (HDPE) is typically used as the plastic in this application due to its high degree of crystallinity which provides good flexural properties.
  • gypsum and/or Portland cement results in dramatically decreased water absorption by these materials. It is believed that this is due to the physical constraints imposed by the cross-links formed by the cross-linking agent. These cross-links create a tighter matrix around the wood fibers and greatly restrict their ability to absorb water and swell and growth. It is believed that the gypsum and/or Portland cement works synergistically with the peroxide cross-linker by the growth of gypsum crystals and/or cement in the constrained matrix. It was discovered that the inclusion of small amounts of a resin cross-linking agent such as a peroxide in combination with a gypsum and/or Portland cement additive would significantly reduce the water absorption of the resulting composite.
  • a resin cross-linking agent such as a peroxide in combination with a gypsum and/or Portland cement additive would significantly reduce the water absorption of the resulting composite.
  • the invention relates to a composite material comprising a homogeneous distribution comprising:
  • thermoplastics a) 20 - 60 weight percent of one or more thermoplastics; b) 40 - 80 weight percent of natural cellulosic libers;
  • the invention further relates to a process for reducing the water absorption of a thermoplastic/cellulosic fiber composite comprising adding to said
  • thermoplastic/cellulosic fiber composite prior to or during processing, a cross-linking agent comprising a peroxide and an additive gypsum and/or Portland cement.
  • Figure 1 is a graph of Weight Percent Water Absorption versus Weight Percent Gypsum Content
  • Figure 2 is a graph of Weight % water absorption versus Percent Gypsum.
  • Figure 3 is a graph of Density versus Weight % of Gypsum.
  • Figure 4 is a graph of MOR versus Weight % Gypsum.
  • Figure 5 is a graph of MOE versus Weight % Gypsum.
  • the invention relates to composite of a thermoplastic and natural cellulosic fibers with a polymeric cross-linking agent and an additive.
  • the cross- linking agent is a peroxide such as dialkyl peroxides, peroxyketals, peroxyesters, hydroperoxides, peroxycarbonates, diacyl peroxides and mixtures thereof.
  • the peroxide cross-linking agent of the present invention is selected to provide efficient cross-linking for the thermoplastic component of the combination.
  • preferred cross-linking agents include peroxides such as VUL-CUP ® (a, ⁇ '-bis (tert-butylperoxy)- diisopropylbenzene), DI-CUP® (dicumyl peroxide), LUPEROX® 801 (t-butyl cumyl peroxide), LUPEROX 101 (2,5-dimethyl -2,5-di(t-butylperoxy) hexane), and
  • LUPEROX 130 (2,5-dimethyl -2,5-di(t-butylperoxy) hexyne), all available from Arkema Inc.
  • peroxides may require the use of a coagent in order to provide cross-linking in accordance with the present invention.
  • the additive of the present invention is gypsum and/or Portland cement.
  • the gypsum and/or portland cement is believed to act synergistically with the peroxide cross-linking agent through the growth of gypsum crystals and/or cement in the constrained matrix which significantly reduces water absorption of the resultant WPC.
  • Gypsum consists of calcium sulfate dehydrate hydrate (CaSO 4 • 2 H 2 O).
  • the material that was added to the wood-plastic composites was the hemi- hydrate form of calcium sulfate and is referred to as gypsum.
  • Portland cement is a blend consisting mainly of calcium silicates along with various iron and aluminum salts. When hydrated it forms an extensive crystalline network which also makes it useful as a building material.
  • the thermoplastic matrix can be any thermoplastic including, but not limited to high density polyethylene, low density polyethylene, polypropylene, other olefin resins, polystyrene, acrylonitrile/styrene copolymers, acrylonitrile/butadiene/styrene copoloymers, ethylene/vinyl acetate copolymers, polymethyl methacrylate, vinyl chloride copolymers, polyvinyl chloride, chlorinated polyvinyl chloride, chlorinated polyethylene and mixtures thereof.
  • the thermoplastic matrix is made up of high density polyethylene, low density polyethylene, or other olefin resins. Most preferably the thermoplastic is high density polyethylene or low density polyethylene.
  • the thermoplastic matrix comprises from 20 to 60 percent by weight and preferably less than 50 percent by weight of the WPC. Percentages herein are in weight percent unless otherwise specified. While a WPC is generally referred to as a wood-polymer composite, it is envisioned that any cellulosic material, either natural or regenerated, may be used as the fibrous filler of the present WPCs.
  • the cellulosic material may be a mixture of one or more materials including, but not limited to wood flour, wood fiber, and agricultural fibers such as wheat straw, flax, hemp, kenaf, nut shells, rice hulls and mixtures thereof.
  • the cellulosic material may also be a pulped cellulosic fiber.
  • the pulped cellulosic fiber may be made of fully or partially recycled materials. Typical cellulosic fibers contain 8%-12% moisture, therefore reducing the moisture content may be needed either by pre-drying the fibers or other methods known in the art.
  • the cellulosic fiber is present in the composite at from 40 to 80 percent by weight, preferably from 45 to 80 percent by weight, more preferably greater than 50 percent by weight, and most preferably from 55 to 70 percent by weight of the composite.
  • Wood polymer composites containing pulped cellulosic fiber may contain 10 to 90 weight percent of the thermoplastic and 10-90 weight percent of pulped cellulosic fiber.
  • the polymeric cross-linking agent is preferably added to the WPC at from 0.15 - 0.75, preferably 0.30 - 0.60 weight percent based on the weight of the total WPC formulation.
  • the reduction in water absorption was found to occur with the addition of even small amounts of cross-linking agent. It is believed that with different cellulosic material and/or different cross-linking agent, the preferred amount of cross-linking agent may vary and could be easily determined.
  • Wood polymer composites are formed by blending the thermoplastic, cellulosic fiber and polymeric cross-linking agent, gypsum and/or Portland cement, and other additives in any order and by any method, and then either directly forming the mixture into a final article, or else forming the mixture into a form useful for further processing, such as pellets or a powder.
  • the wood polymer composite is formed by blending the thermoplastic matrix and any additives, including the polymeric cross-linking agent and gypsum and/or Portland cement and typical additives such as compatibilizers, lubricants, antioxidants, UV and heat stabilizers, colorants, impact modifiers, and process aids.
  • the WPC may then be extruded directly into a final shaped article, or may be pelletized or ground to a powder prior to final use.
  • a WPC made of the composition of the invention can be formed into a final article by means known in the art, such as by extrusion, injection molding, casting or combination thereof.
  • the WPC with cross-linking agent and gypsum and/or Portland cement described in the invention provides excellent flexural strength and modulus, and results in a decrease in moisture absorption compared to the WPC control without cross-linking agents.
  • the WPC is useful in many applications, including, but not limited to outdoor decks, siding, fencing, roofing, industrial flooring, landscape timbers, railing, moldings, window and door profile, and automobile applications.
  • the WPC may be foamed to produce a lighter and less expensive composite material.
  • compositional information and water absorption results were obtained from mixtures with and without a cross-linking agent and with and without gypsum and/or cement.
  • the compositions that were mill-mixed and press-cured are shown in Table 1. From this data it can be seen that the simple blend of wood flour and high density polyethylene (HDPE) showed a weight gain of over 12% after four weeks of immersion in the water bath.
  • Addition of Vul-Cup® 40KE, a peroxide cross-linking agent, to the formulation reduced the water absorption by nearly a half while formulations with gypsum alone (Formulations 4 and 5) or cement alone (Formulations 12 and 13) showed no improvement in the water absorption at the concentrations of those tests.
  • Table 2 summarizes the formulations that were included in a study of extruded boards.
  • the boards of wood plastic composites were made using a 35 mm extruder.
  • the components were dry mixed prior to adding to the extruder inlet arid then heated to 375° F during the extrusion process to decompose the peroxide and effect the cross- linking of the high density polyethylene.
  • the first run is a control to give a baseline formulation without peroxide or gypsum.
  • Run 2 contains only Vul-Cup® 40KE, a peroxide cross-linker, while the subsequent six runs have increasing amounts of gypsum along with the Vul-Cup 40KE.
  • Table 3 contains the water absorption data for these samples as measured periodically over the course of 28 days (672 hours).
  • Figure 3 shows the effect of increasing gypsum content on density. Since gypsum has a density of 2.3 g/cm3 it was expected that the density of the overall composite would increase with the gypsum content.
  • Figure 4 shows the effect of gypsum on the MOR. This indicates that increasing the gypsum content can have a beneficial impact on the rupture strength of these composites. It was observed that the MOR of the formulations gave a similar profile to the density plot. It is believed that the reason that MOR is lower for formulations that contain peroxide alone and peroxide plus low concentrations of gypsum is due to the porosity caused by the volatile peroxide decomposition products. Lowering the peroxide concentration is expected to minimize this effect.
  • Figure 5 contains a plot of the MOE which is a measure of the stiffness of the extruded boards. It can be observed in this plot that the formulations that contain peroxide have a decreased MOE. It is known that peroxide cross-linking of HDPE reduces the stiffness because it interferes with reformation of crystalline domains within the polymer after curing at high temperatures. Adding gypsum to the composite appears to compensate for much of this loss in stiffness caused by the peroxide.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Chemistry (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Ceramic Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Structural Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Biochemistry (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

La présente invention concerne des matériaux de construction d’un composite bois/plastique contenant des matériaux de remplissage cellulosiques, de la résine, un agent de réticulation de résine et du gypse et/ou un ciment Portland. L'utilisation d'un agent de réticulation de résine permettant de réticuler la résine permet d'obtenir un composite bois/polymère présentant une absorption d'eau réduite.
PCT/US2010/042883 2009-07-24 2010-07-22 Composite bois/plastique réticulé WO2011011590A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US22822609P 2009-07-24 2009-07-24
US61/228,226 2009-07-24

Publications (1)

Publication Number Publication Date
WO2011011590A1 true WO2011011590A1 (fr) 2011-01-27

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040229978A1 (en) * 2003-05-15 2004-11-18 Bowe Michael Damian Polymer-modified fiber-cement composition
US20060287435A1 (en) * 2005-06-17 2006-12-21 Delphi Technologies Inc. Thermoplastic compounds with flexible processing options for multi-applications
US20080261019A1 (en) * 2005-10-24 2008-10-23 Arkema Inc. Pvc/Wood Composite

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040229978A1 (en) * 2003-05-15 2004-11-18 Bowe Michael Damian Polymer-modified fiber-cement composition
US20060287435A1 (en) * 2005-06-17 2006-12-21 Delphi Technologies Inc. Thermoplastic compounds with flexible processing options for multi-applications
US20080261019A1 (en) * 2005-10-24 2008-10-23 Arkema Inc. Pvc/Wood Composite

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