Abstract: A quantum rod sheet includes: a first support layer including a plurality of grooves which extends substantially in a predetermined direction; a plurality of quantum rods arranged substantially in the predetermined direction along the grooves of the first support layer; and a second support layer which covers the first support layer and the quantum rods.
Abstract: Disclosed is a shaped article comprising a composition comprising polyamide and ionomer wherein the ionomer comprises a mixture of Zn and alkali metal (M2) cations wherein the Zn/M2 equivalent ratio is from about 0.6 to about 6. The articles prepared from the compositions with mixed ion ionomers exhibit high stiffness, hardness and toughness, good scratch resistance, desirable low melt viscosity and high processability.
Type:
Grant
Filed:
December 30, 2011
Date of Patent:
December 9, 2014
Assignee:
E I du Pont de Nemours and Company
Inventors:
Richard T. Chou, Herbert Vernon Bendler, Karlheinz Hausmann
Abstract: A polyester amide compound having a polycarboxylic acid unit in an amount of 25 to 50 mol %, the polycarboxylic acid unit containing an aromatic dicarboxylic acid unit represented by the following formula (I) in an amount of 70 mol % or more; a polyhydric alcohol unit in an amount of 25 to 50 mol %, the polyhydric alcohol unit containing an aliphatic diol unit represented by the following formula (II) in an amount of 70 mol % or more; and a structural unit represented by the following formula (III) in an amount of 0.1 to 50 mol %: wherein, in formula (I), Ar represents an arylene group; in formula (II), X represents a C2 to C20 alkylene group; and in formula (III), R represents a substituted or unsubstituted alkyl group or a substituted or unsubstituted aryl group.
Type:
Grant
Filed:
March 9, 2011
Date of Patent:
November 18, 2014
Assignee:
Mitsubishi Gas Chemical Company, Inc.
Inventors:
Ryoji Otaki, Tsuneaki Masuda, Takafumi Oda
Abstract: The invention relates to methods for preparing crosslinked polyelectrolytes, in particular crosslinked polyelectrolytes multilayer films. The invention also relates to a method of coating a surface, and the obtained coated article.
Type:
Application
Filed:
December 30, 2013
Publication date:
November 6, 2014
Inventors:
Catherine Picart, Jean-Claude Voegel, Benoit Frisch, Pierre Schaaf, Gero Decher, Frederic Cuisinier
Abstract: A disclosure provides a resin composition, a prepreg, and a substrate employing the same. According to an embodiment of the disclosure, the resin composition includes a polyphenylene ether compound, and a bismaleimide. The prepreg includes a cured product of the resin composition. The substrate includes a product fabricated by the resin composition or the prepreg.
Type:
Application
Filed:
April 30, 2014
Publication date:
October 30, 2014
Applicant:
INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
Inventors:
Wei-Ta YANG, Li-Chun LIANG, I-Hong LIN, Chung-Cheng LIN
Abstract: Presently described are curable compositions comprising a mixture of at least one (e.g. free-radically) polymerizable ionic liquid and at least one other ethylenically unsaturated monomer, oligomer, or polymer. The polymerizable ionic liquid is characterized as having an air to nitrogen curing exotherm ratio of at least 0.70. Also described are articles and methods of making articles from such curable compositions. A monofunctional polymerizable ionic liquid is also described comprising a non-polymerizable substituted imidazolium cationic group and a polymerizable sulfonate anion.
Type:
Application
Filed:
July 15, 2014
Publication date:
October 30, 2014
Inventors:
YIZHONG WANG, JOEL D. OXMAN, LARRY R. KREPSKI, PEIWANG ZHU, KEVIN M. LEWANDOWSKI, BRIAN M. HOLMES, RICHARD L. SEVERANCE, JOSEPH D. RULE, THOMAS P. KLUN
Abstract: The present invention provides a multilayer film for forming medical solution pouches that help prevent or reduce the presence of bubbles or foam in the solution after heat sterilization. In particular, the present invention provides a multilayer film for forming medical solution pouches that are capable of passing the bubble test as set forth in the Chinese State Drug Package Container Material Standard No. YBB00112005. In particular, the present invention provides a multilayer film in which polyamide 612 or calcium stearate component has been incorporated as an anti-foaming agent. The presence of polyamide 612 or calcium stearate in one or more layers of the film helps prevent the formation of foam in the solution after heat sterilization.
Type:
Application
Filed:
July 1, 2014
Publication date:
October 23, 2014
Inventors:
Robert Babrowicz, Marvin Russell Havens, Jerry Christopher Richardson
Abstract: The present invention relates generally to the field of organic chemistry and particularly to the optical retardation films for liquid crystal displays. The present invention provides an optical film comprising a substrate having front and rear surfaces, and at least one solid retardation layer on the front surface of the substrate.
Abstract: The present invention includes compositions and methods of supplying a corrosion inhibitor including placing a corrosion inhibitor attached to a nanostructure carrier, placing the nanostructure carrier containing the corrosion inhibitor at a location and the nanostructure carrier is capable of releasing the corrosion inhibitor.
Abstract: Disclosed herein is a reinforced composition comprising: 55 to 80 wt % of a compatibilized blend of a polyphthalamide and a poly(phenylene ether) wherein said compatibilized blend is formed from a mixture of polyphthalamide and poly(phenylene ether) in a ratio of between 1.5:1 and 7.0:1, and a functionalizing agent in an amount sufficient to effect compatibilization; and 20 to 45 wt % of a nylon glass fiber, wherein the composition contains less than 0.1 wt % of phosphinates and less than 0.1 wt % of impact modifiers and weight percent is based on the total weight of the composition.
Abstract: A gypsum panel that incorporates a plant fiber other than paper is disclosed. The plant fiber material may be in the form of a facing material adhered to at least one side of the gypsum panel or in the form of loose fibers integrated with the gypsum panel as a matrix or both. Further, the plant fiber may be combined with conventional gypsum panel additives, is fully recyclable and environmentally sustainable. The present invention further relates to a method of making such a gypsum panel.
Type:
Application
Filed:
April 25, 2012
Publication date:
October 9, 2014
Inventors:
Keshav S. Gautam, Samuel C. Baer, Hubert C. Francis, Micheal S. Lerch
Abstract: An injection moldable, thermally conductive polymer composition that has ultra low CTE properties is provided. The composition is suitable both for substrate applications in high precision electronics assemblies as well as over molding applications in conjunction with ceramic substrates. The composition includes a base polymer matrix material loaded with thermally conductive filler, which imparts thermal conductivity to the polymer matrix while also maintaining or enhancing the dielectric properties of the base polymer. The resultant composition exhibits CTE properties in the range of between 9 ppm/° C. and 2 ppm/° C., exhibits an optical anisotropy of below 1.5, and a thermal conductivity of greater than 2 W/m° K. The composition is suitable for use in over molding applications in conjunction with virtually any suitable electronics substrate material without the introduction of mechanical stresses produced by large CTE differentials.
Abstract: An electro-conductive member for electrophotography, including an electro-conductive mandrel and an electro-conductive layer; and a process cartridge and an electrophotographic apparatus using the same. The layer contains a binder resin having a sulfo or a quaternary ammonium group as an ion exchange group, and an ion opposite in polarity to the ion exchange group. The resin has any one of structures represented by formulas (1)-1 and (1)-2, and any one of structures represented by formulas (2)-1 to (2)-3; and the resin has a molecular structure preventing occurrence of a matrix-domain structure. M represents an integer of 2-20, n represents an integer of 5-50, p represents an integer of 1-25, q represents an integer of 1-15, and r represents an integer of 1-12.
Abstract: A method for bonding PEBA plastic composition with dissimilar materials. Also, composite articles made in accordance with the method. The method uses only water-borne adhesive compositions.
Abstract: Coatings for a surface, especially a priming coating, of the present invention have been found to be durable, resistant to oxidative degradation, erosion and depolymerisation, stable to sterilization and low particulating, and are easily applied to the required surface of a substrate in a surface-independent manner. Such coatings, when used as priming coatings to be coated with a subsequent coating, in at least some embodiments, form exterior coatings which are also highly durable and are stable to sterilisation and aging.
Abstract: A carrier belt for fabricating a device or component such as an anisotropic conductive film. The carrier belt includes a substrate having a sacrificial image enhancing layer. Microcavities are formed in the carrier by laser ablation through the image enhancing layer. After the image enhancement layer is removed, a plurality of conductive particles are distributed into an array of microcavities formed by laser ablation on a surface of a carrier belt and transferred to an adhesive layer. The image enhancing layer enables one to form microcavities with a fine pitch and spacing and partitions having a high aspect ratio.
Type:
Application
Filed:
March 12, 2013
Publication date:
September 18, 2014
Applicant:
Trillion Science Inc.
Inventors:
Rong-Chang Liang, Chin-Jen Tseng, Ta-Ching Wu, Jia Yen Leong, Zhiyao AN, An-Yu Ma, Maung Kyaw Aung
Abstract: Provided are multi-layer antithrombic coatings comprising an outermost layer of an antithrombic agent, such as a heparin conjugate, bound to a penultimate polymeric layer comprising cationic polymer species that is bound alternating polymeric layers comprising anionic polymer species and cationic polymer species, and uses thereof.
Abstract: A method for manufacturing a propylene polymer, including: a) fermenting and optionally purifying first renewable materials to produce an alcohol or an alcohol mixture, the alcohol or alcohol mixture including at least isopropanol and/or at least a mixture of ethanol and 1-butanol; b) dehydrating the resulting alcohol or the alcohol mixture to produce an alkene or alkene mixture in a first series of reactors, the alkene or alkene mixture containing at least propylene; c) polymerizing the propylene in a second reactor, optionally in the presence of a comonomer, so as to produce a propylene polymer; d) isolating the propylene polymer obtained in step c); and e) grafting the propylene polymer obtained from step d). A grafted propylene polymer capable of being obtained by the method, to the compositions containing the polymer, as well as to the uses of the polymer.
Type:
Application
Filed:
May 21, 2014
Publication date:
September 11, 2014
Applicant:
ARKEMA FRANCE
Inventors:
Samuel DEVISME, Fabrice CHOPINEZ, Jean-Laurent PRADEL, Guillaume LE, Thomas ROUSSEL, Jean-Luc DUBOIS
Abstract: The invention relates to methods for coating a substrate with at least one monolayer of self-assembling proteins, using stabilized aqueous solutions with self-assembling proteins, and also to substrates obtainable as a result. Methods for stabilizing solutions with self-assembling proteins, and the stabilized solutions obtainable therefrom, are likewise provided by the invention. According to the coating method, at least one monolayer of a self-assembling protein is produced on a substrate by first providing a stabilized aqueous solution which comprises at least one self-assembling protein.
Type:
Application
Filed:
August 24, 2012
Publication date:
September 11, 2014
Applicant:
TECHNISCHE UNIVERSITÄT DRESDEN
Inventors:
Kai Ostermann, Leopold Gruner, Gerhard Rödel
Abstract: The general field of the invention is that of airbags. The invention relates to a process for improving the tear strength and the combing strength of coated fabrics intended for uses in the field of inflatable bags, using a silicone composition comprising an additive consisting of a polyorganosiloxane resin (V) and a calcium carbonate. After coating the composition onto the fabric supports and curing, the coated supports not only have optimum adhesion and crease resistance properties, but also have good properties in terms of combing strength and tear strength.
Abstract: Disclosed are a polyamic acid solution, a polyimide resin prepared by imidization of the polyamic acid solution, a flexible metal clad laminate using the polyimide resin, and a printed circuit board including the flexible metal clad laminate, wherein the polyamic acid solution includes (a) 3,3?,4,4?-biphenyltetracarboxylic acid dianhydride (BPDA), and pyromellitic dianhydride (PMDA) as aromatic tetracarboxylic acid dianhydride; (b) at least one aromatic diamine; (c) an organic solvent; and (d) an inorganic filler.
Type:
Grant
Filed:
April 2, 2010
Date of Patent:
August 19, 2014
Assignee:
Doosan Corporation
Inventors:
Yang Seob Kim, Won Kyum Kim, Hyung Wan Kim, Dong Bo Yang
Abstract: Disclosed is a transparent multilayer sheet that is excellent in antistatic properties, as well as transparency. The transparent multilayer sheet includes a surface layer comprising a conductive thermoplastic polyurethane or polyurea resin containing ethylene oxide; and a back layer attached to the surface layer and comprising a transparent non-conductive polymer resin. Preferably, the polyurethane or polyurea resin is a polymerization product of (a) a polyether-based polymer containing ethylene oxide and reacting with an isocyanate group; (b) an aromatic or aliphatic diisocyanate compound; and (c) a chain extender C2 to C10 containing a primary hydroxyl group or an amine group, and the transparent non-conductive polymer resin is selected from the group consisting of polyethylene terephthalate, glycol modified polyethylene tereph-thalate, glycol modified polycyclohexaneterephthalate, polymethylmethacrylate, polycarbonate, transparent acrylonitrile-butadiene-styrene (ABS), and mixtures thereof.
Type:
Grant
Filed:
December 22, 2008
Date of Patent:
August 19, 2014
Assignee:
Lubrizol Advanced Materials, Inc.
Inventors:
Hwa Yong Lee, Tae Woong Lee, Dong Sik Kim, Nam Jung Kim, Young Woo Kim
Abstract: The present invention relates to a methods and composition in which a D-form or retro-inverso Pseudomonas pilin peptide, optionally having a polyethylene glycol moiety covalently attached to the peptide, is bound to a substrate. The disclosed methods and composition are useful for reducing the frictional coefficient, inhibiting biofilm formation by non-Pseudomonas bacteria, for reducing the inflammatory response to a material, for reducing corrosion of metals, and in biosensor applications.
Type:
Application
Filed:
April 13, 2012
Publication date:
August 7, 2014
Applicant:
ARCH BIOPHYSICS, INC.
Inventors:
Randall Thomas Irvin, Elisabeth Melika Davis, Gongyang Li, Daniel Abraham Muruve
Abstract: A conductive fiber reinforced polymer composition may include a composite structure having a longitudinal axis, a lateral axis, and a through axis, the composite structure including a polymer matrix, a conductive filler incorporated into the polymer matrix, and a reinforcing material incorporated into the polymer matrix.
Abstract: Exemplary embodiments provide materials and methods for a nanocomposite material and a fuser member containing the nanocomposite material in a fusing system, wherein the nanocomposite material can contain a plurality of carbon nanotubes (CNTs) and a plurality of inorganic nano-fillers (INFs) disposed in a polymer matrix to provide the nanocomposite material with desirable properties.
Type:
Grant
Filed:
December 27, 2010
Date of Patent:
July 29, 2014
Assignee:
Xerox Corporation
Inventors:
Qi Zhang, Yu Qi, Nan-Xing Hu, Gordon Sisler
Abstract: It is an object of the present invention to provide a resin composition whose flowability is secured when the resin composition is injection-molded into injection-molded articles such as a resin-made crown-shaped cage and a resin-made seal both for a rolling bearing and a resin-made sliding bearing and which is capable of enhancing the mechanical strengths and toughnesses of these injection-molded articles to such an extent that these injection-molded articles can be used as bearing members. The resin composition is formed into a molded article and used as a bearing member. The resin composition is composed of polyamide resin or polyester resin to which polycarbodiimide is added. The polyamide resin is at least one resin selected from among polyamide 66 resin and polyamide 11 resin. The polyester resin is polytrimethylene terephthalate resin. 0.5 to 6 wt % of the polycarbodiimide is contained in an entirety of the resin composition.
Abstract: An organic compound has the general structural formula I. In the formula I, Core is a conjugated organic unit capable of forming a rod-like macromolecule, n is a number of the conjugated organic units in the rod-like macromolecule, Gk is a set of ionogenic side-groups, and k is a number of the side-groups in the set Gk. The set of the ionogenic side-groups provide solubility of the organic compound or its salts and give rigidity to the rod-like macromolecule. The number n provides molecule anisotropy that promotes self-assembling of macromolecules in a solution of the organic compound or its salts, forming lyotropic liquid crystal. The solution is capable of forming a solid optical retardation layer of positive A-type substantially transparent to electromagnetic radiation in the visible spectral range. An optical film based on an organic compound of the general formula I and a method of making same are also disclosed.
Abstract: The invention relates to an article comprising a coating, which coating comprises at least two layers, of which the inner layer is a primer layer, comprising a supporting network comprising a supporting polymer, and the outer layer is a functional layer comprising a multifunctional polymerizable compound.
Type:
Application
Filed:
December 13, 2013
Publication date:
June 26, 2014
Applicant:
DSM IP ASSETS B.V.
Inventors:
Aylvin Jorge Angelo Athanasius DIAS, Edith Elisabeth M. VAN DEN BOSCH, Peter BRUIN, Marnix ROOIJMANS, Rudolfus Antonius Theodorus Maria VAN BENTHEM
Abstract: A coating which provides corrosion resistance, wear resistance, and, optionally, lubrication, for deposition on a threaded article is disclosed. The coating comprises a polymer matrix, such as a polyimide, which is modified with small amounts of a fluorine containing polymer modifier, as well as other compounds or additives to improve performance of the coating. Additionally, the coating can further comprise a solid lubricant or an anticorrosion compound dispersed within the polymer matrix.
Abstract: Multiple bonding layer schemes that temporarily join semiconductor substrates are provided. In the inventive bonding scheme, at least one of the layers is directly in contact with the semiconductor substrate and at least two layers within the scheme are in direct contact with one another. The present invention provides several processing options as the different layers within the multilayer structure perform specific functions. More importantly, it will improve performance of the thin-wafer handling solution by providing higher thermal stability, greater compatibility with harsh backside processing steps, protection of bumps on the front side of the wafer by encapsulation, lower stress in the debonding step, and fewer defects on the front side.
Type:
Application
Filed:
August 4, 2011
Publication date:
June 12, 2014
Applicant:
Brewer Science Inc.
Inventors:
Rama Puligadda, Xing-Fu Zhong, Tony D. Flaim, Jeremy McCutcheon
Abstract: The invention relates to a copolyamide comprising at least two different units corresponding to the following general formulation: A/X.T A is chosen from a unit obtained from an amino acid, a unit obtained from a lactam and a unit corresponding to the formula (Ca diamine).(Cb diacid), with a representing the number of carbon atoms of the diamine and b representing the number of carbon atoms of the diacid, a and b each being between 4 and 36, advantageously between 9 and 18, X.
Abstract: A color sampling display product is provided that includes a radiation-curable water-based coating composition applied to a substrate, and shows mechanical integrity and aesthetic appeal.
Abstract: Compositions and packaging films are provided having a blend of an amorphous nylon copolymer, a low temperature polyamide, and a high temperature polyamide. The compositions can be used in making heat shrinkable films and food packages having desirable levels of free shrink.
Abstract: Coatings for an implantable medical device and a method of fabricating thereof are disclosed, and the coatings comprise biologically absorbable poly(ester amides).
Abstract: Coatings for an implantable medical device and a method of fabricating thereof are disclosed, and the coatings comprise biologically absorbable poly(ester amides).
Abstract: The present invention relates generally to the field of organic chemistry and particularly to the optical retardation films for liquid crystal displays. The present invention provides an optical film comprising a substrate having front and rear surfaces, and at least one solid retardation layer on the front surface of the substrate.
Abstract: The invention relates to a thermally reversible hot melt adhesive that is isocyanate-free, moisture independent, crosslinkable and thermally reversible. The thermally reversible hot melt adhesive may be repeatedly heated and cooled without negatively affecting the performance of the adhesive. The thermally reversible composition may also be used as a primer layer. The thermally reversible hot melt adhesive and primer are particularly well suited for end use applications such as packaging, graphic arts, construction, footwear, textiles, general assembly, automotive and consumer goods.
Type:
Grant
Filed:
December 12, 2011
Date of Patent:
May 27, 2014
Assignee:
Henkel US IP LLC
Inventors:
Donald Herr, Laxmisha M. Sridhar, Andrew Slark
Abstract: Co-extruded multilayer packaging films suitable for packaging fluid products, showing a very good balance of mechanical, chemical and, optionally, barrier properties, good sealability, heat resistance and unexpectedly improved optical properties, a process for their manufacturing, pouches and packages obtained from them, are disclosed. These films comprise a core layer (D) comprising a polyamide; two tie layers (C), directly adhered to the opposite surfaces of the core layer; at least one intermediate layer (B), directly adhered to the opposite surface of a tie layer (C), comprising high density polyethylene; and two outer layers (A) comprising an ethylene/alpha olefin copolymer.
Abstract: Forming and depositing a high temperature inorganic coating on a polymeric composite substrate surfaces having deposited thereon an interlayer, and articles produce therefrom. Methods of providing functional properties to said composites are also disclosed.
Abstract: A material that is capable of stopping high-speed projectiles but yet is sufficiently flexible for use in various applications, such as to be used in footwear to protect a person's feet, especially the bottoms thereof is achieved by an enhanced ballistic material formed from interleaving layers of a ballistic material and layers of a gel matrix material that remains relatively soft and flexible. The ballistic material layer may be high tensile strength synthetic or polymeric fibers that are arranged in a mesh weave. Preferably the gel matrix material is capable of investing the ballistic material, e.g., by having the gel matrix material fill the interstices of the fibers, which may be achieved through the use of heat and/or pressure. Furthermore, the combined material, i.e., the enhanced ballistic material, may be shaped, e.g., by molding.
Abstract: The present disclosure relates to the preparation and application of conducting polymers nanoparticle composites. Specifically, the disclosure relates to the preparation of polyaniline, or similar conducting polymers, as polymer nanoparticles on substrates prepared by chemical polymerization of aniline on the surface or inside the pores of the substrate. Isolated polymerization, e.g. inside the pores, avoids the formation of aggregate polyaniline nanoparticles. The process of the present disclosure may be used for both inorganic and organic porous solids that are water insoluble, acid resistant, and resistant to oxidants such as ammonium persulfate. The conducting polymer nanoparticle composites may be used in a variety of applications, including as anticorrosion coatings.
Abstract: A multilayer injection molded article containing a layer (A) containing a polyamide resin (A), and a layer (B) containing a resin (B) as a major component, wherein the polyamide resin (A) contains from 25 to 50% by mol of a diamine unit, which contains a particular diamine unit in an amount of 50% by mol or more; from 25 to 50% by mol of a dicarboxylic acid unit, which contains a particular dicarboxylic acid unit in an amount of 50% by mol or more; and from 0.1 to 50% by mol of a particular constitutional unit.
Abstract: The presently disclosed subject matter is directed to a multilayer coextruded sterilizable film that can be used for aseptic packaging applications. The film comprises an outer layer comprising a blend of a cyclic olefin copolymer with a glass transition temperature of at least 80° C. and an olefinic copolymer with a melting point of at least 125° C. The film has a storage modulus of at least 109 dynes/cm2 at temperatures of up to 140° C. An aseptic package and a method of making an aseptic package are also disclosed.
Abstract: A multi layer laminate sheet suitable to form a battery pouch is described. The laminate sheet includes a core metal layer, a sealant layer, and an insulating layer. The sealant layer is bonded to one surface of the core metal layer, and the insulating layer is bonded to the other surface of the core metal layer. The insulating layer has a width that is greater than the width of the core metal layer, such that the insulating layer extends past two edges of the core metal layer. When the pouch is formed by folding the laminate sheet, the insulating layer protects the edges of the core metal layer of the laminate sheet from being exposed around the edges or sides of the pouch. Other embodiments are also described and claimed.
Abstract: Disclosed is a multilayer film. The multilayer film has the general structure of A/B/A/C or B/A/B/C, wherein A is a nucleated high density polyethylene (HDPE) layer, B is a single or multilayer structure, and C is a seal layer. Adding a nucleating agent to HDPE improves the water vapor barrier property of the HDPE layer and the multilayer film, but it also causes the multilayer film to curl in the conventional multilayer film structures. The invention provides a multilayer film, which includes at least one layer of nucleated HDPE, with reduced or eliminated curling while retaining high water vapor barrier.
Abstract: A functioning optical lens includes a molded polyamide layer, and an optical sheet including a polyamide sheet layer and an optical film layer. Such a functioning optical lens may be prepared by bending an optical sheet including an optical film layer and a polyamide sheet layer, and injection molding a polyamide composition onto the bent polyamide sheet layer so as to thermally fuse the polyamide composition and the polyamide sheet layer with each other.
Abstract: A multilayer injection molded article containing a layer (X) formed of a resin composition containing a polyamide compound (A) and a resin (B), and a layer (Y) containing a resin (C) as a major component, wherein the polyamide compound (A) contains from 25 to 50% by mol of a diamine unit, which contains a particular diamine unit in an amount of 50% by mol or more; from 25 to 50% by mol of a dicarboxylic acid unit, which contains a particular dicarboxylic acid unit in an amount of 50% by mol or more; and from 0.1 to 50% by mol of a particular constitutional unit.
Abstract: The invention relates to processes for the production of a composite component via multicomponent injection molding, where the composite component comprises a main body composed of a thermoplastic and an external layer composed of a foamed thermoplastic. The main body is produced via injection molding and subsequent hardening of the thermoplastic. A mixture of the foamed thermoplastic and a chemical blowing agent is injected onto the main body, subsequently hardened in the same injection mold, and foamed by heating. The composite component is solidified via cooling. The foamed thermoplastic is at least one polyamide whose modulus of elasticity is from 1 MPa to 250 MPa in the entire temperature range from 70° C. to 180° C. The chemical blowing agent is in non-polymerized form.
Type:
Grant
Filed:
December 7, 2009
Date of Patent:
April 8, 2014
Assignee:
BASF SE
Inventors:
Reinhard Jakobi, Jürgen Bartl, Kamil Fischer-Jerdonek, Cecile Gibon, Harald Kröger, Susanne Zeiher