Patents by Inventor Anton Peter De Weijer
Anton Peter De Weijer has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 9744714Abstract: An UHMWPE film having a tensile strength of at least 2.0 GPa, a tensile energy to break of at least 30 J/g, an Mw of at least 500 000 gram/mole, and a Mw/Mn ratio of at most 6, and a film width of at least 5 mm. The film may be manufactured via a process which comprises subjecting a starting UHMWPE with a weight average molecular weight of at least 500 000 gram/mole, an elastic shear modulus determined directly after melting at 160° C. of at most 1.4 MPa, and a Mw/Mn ratio of at most 6 to a compacting step and a stretching step under such conditions that at no point during the processing of the polymer its temperature is raised to a value above its melting point. The film may be used as starting material in any applications where high tensile strength and high energy to break are important. Suitable applications include ballistic applications, ropes, cables, nets, fabrics, and protective applications.Type: GrantFiled: January 6, 2010Date of Patent: August 29, 2017Assignee: TEIJIN ARAMID B.V.Inventors: Joris Eem Van Der, Anton Peter De Weijer, Sanjay Rastogi
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Patent number: 9393734Abstract: The present invention pertains to a UHMWPE film having a tensile strength of at least 2.0 GPa, a tensile energy to break of at least 30 J/g, an Mw of at least 500 000 gram/mole, and a Mw/Mn ratio of at most 6. The film may be manufactured via a process which comprises subjecting a starting UHMWPE with a weight average molecular weight of at least 500 000 gram/mole, an elastic shear modulus determined directly after melting at 160° C. of at most 0.9 MPa, and a Mw/Mn ratio of at most 6 to a compacting step and a stretching step under such conditions that at no point during the processing of the polymer its temperature is raised to a value above its melting point. The film may be used as starting material in any applications where high tensile strength and high energy to break are important. Suitable applications include ballistic applications, ropes, cables, nets, fabrics, and protective applications.Type: GrantFiled: July 2, 2008Date of Patent: July 19, 2016Assignee: THIJIN ARAMID B.V.Inventors: Anton Peter De Weijer, Hendrik Van De Hee, Martinus Wilhelmus Maria Gemma Peters, Sanjay Rastogi, Bing Wang
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Publication number: 20140302272Abstract: A ballistic-resistant moulded article containing a compressed stack of sheets that contain high molecular weight polyethylene tapes. The direction of the polyethylene tapes within the compressed stack is not unidirectional. At least part of the tapes have a width of at least 2 mm, a thickness to width ratio of at least 10:1, and a density of at most 99% of the theoretical tape density. The moulded article is made of tapes that have a density below the theoretical density of the tapes.Type: ApplicationFiled: November 6, 2012Publication date: October 9, 2014Inventors: Anton Peter De Weijer, Sanjay Rastogi, Soon Joo Bovenschen, Joris Van De Eem, Johannes Adrianus Roos
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Patent number: 8821774Abstract: A process for manufacturing high molecular weight polyethylene fibers, including subjecting a polyethylene tape with a weight average molecular weight of at least 500,000 grams/mole, a Mw/Mn ratio of at most 6, and a 200/110 uniplanar orientation parameter of at least 3 to a force in the direction of the thickness of the tape over the entire width of the tape. A polyethylene fiber having a Mw of at least 500 000 gram/mole, a Mw/Mn ratio of at most 6, and a 020 uniplanar orientation value of at most 55°.Type: GrantFiled: July 8, 2009Date of Patent: September 2, 2014Assignee: Teijin Aramid B.V.Inventors: Anton Peter De Weijer, Martinus Wilhelmus Maria Gemma Peters, Joris Eem Van Der, Hendrik Van De Hee
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Patent number: 8771569Abstract: The present invention pertains to a polyethylene film and a process for manufacturing such film. The polyethylene film may have a ratio between the strength in a first direction in the film plane and the strength in a second direction in the film plane perpendicular to the first direction in the range of 0.1-10:1, the strength in at least one direction being at least 0.2 Gpa. The process for manufacturing a polyethylene film may have a starting UHMWPE polymer with an average molecular weight of at least 500,000 grams/mole, an elastic shear modulus determined directly after melting at 160° C. of at most 1.4 MPa, and a Mw/Mn ratio of at most 6 to a solvent-free compacting process and a stretching process under such conditions that at no point during the process the temperature of the intermediate polymer film is raised to a value above its melting point.Type: GrantFiled: January 6, 2010Date of Patent: July 8, 2014Assignee: Teijin Aramid B.V.Inventors: Joris Eem Van Der, Johannes Bos, Anton Peter De Weijer, Sanjay Rastogi, Gerwin Elderman
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Publication number: 20110268952Abstract: An UHMWPE film having a tensile strength of at least 2.0 GPa, a tensile energy to break of at least 30 J/g, an Mw of at least 500 000 gram/mole, and a Mw/Mn ratio of at most 6, and a film width of at least 5 mm. The film may be manufactured via a process which comprises subjecting a starting UHMWPE with a weight average molecular weight of at least 500 000 gram/mole, an elastic shear modulus determined directly after melting at 160° C. of at most 1.4 MPa, and a Mw/Mn ratio of at most 6 to a compacting step and a stretching step under such conditions that at no point during the processing of the polymer its temperature is raised to a value above its melting point. The film may be used as starting material in any applications where high tensile strength and high energy to break are important. Suitable applications include ballistic applications, ropes, cables, nets, fabrics, and protective applications.Type: ApplicationFiled: January 6, 2010Publication date: November 3, 2011Applicant: TEIJIN ARAMID B.V.Inventors: Joris Eem Van Der, Anton Peter De Weijer, Sanjay Rastogi
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Publication number: 20110268951Abstract: The present invention pertains to a polyethylene film and a process for manufacturing such film. The polyethylene film may have a ratio between the strength in a first direction in the film plane and the strength in a second direction in the film plane perpendicular to the first direction in the range of 0.1-10:1, the strength in at least one direction being at least 0.2 Gpa. The process for manufacturing a polyethylene film may have a starting UHMWPE polymer with an average molecular weight of at least 500,000 grams/mole, an elastic shear modulus determined directly after melting at 160° C. of at most 1.4 MPa, and a Mw/Mn ratio of at most 6 to a solvent-free compacting process and a stretching process under such conditions that at no point during the process the temperature of the intermediate polymer film is raised to a value above its melting point.Type: ApplicationFiled: January 6, 2010Publication date: November 3, 2011Applicant: TEIJIN ARAMID B.V.Inventors: Joris Eem Van Der, Johannes Bos, Anton Peter De Weijer, Sanjay Rastogi, Gerwin Elderman
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Publication number: 20110124835Abstract: A process for manufacturing high molecular weight polyethylene fibers, including subjecting a polyethylene tape with a weight average molecular weight of at least 500,000 grams/mole, a Mw/Mn ratio of at most 6, and a 200/110 uniplanar orientation parameter of at least 3 to a force in the direction of the thickness of the tape over the entire width of the tape. A polyethylene fiber having a Mw of at least 500 000 gram/mole, a Mw/Mn ratio of at most 6, and a 020 uniplanar orientation value of at most 55°.Type: ApplicationFiled: July 8, 2009Publication date: May 26, 2011Applicant: TEIJIN ARAMID B.V.Inventors: Anton Peter De Weijer, Martinus Wilhelmus Maria Gemma Peters, Joris Eem Van Der, Hendrik Van De Hee
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Publication number: 20110083820Abstract: The invention relates to a paper comprising at least one of a fiber, pulp, fibril, floc, and fibrid having a polybenzazole structure with a repeating unit of formula (I) and/or (II) or its precursor structure with a repeating unit of formula (III): wherein Ar1 and Ar2 are independently a para or meta aromatic group having 4 to 12 carbon atoms, X and Y are the same or different and selected from O, S, and NH; and n is 0 or 1, and wherein the paper is free or essentially free of non-extractable phosphorus compound. The paper is particularly suitable for making an electrical insulation material, a honeycomb structure, or a constructive material.Type: ApplicationFiled: September 2, 2008Publication date: April 14, 2011Applicant: TEIJIN ARAMID B.V.Inventors: Monica Lopez Lorenzo, Anton Peter De Weijer, Richard Visser
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Publication number: 20110041677Abstract: Ballistic-resistant moulded article comprising a compressed stack of sheets comprising tapes of a reinforcing material, characterised in that at least one sheet comprises woven tapes as weft and as warp, at least some of the tapes having a width of at least 10 mm. A method for manufacturing the ballistic-resistant moulded article is also claimed.Type: ApplicationFiled: April 27, 2009Publication date: February 24, 2011Applicant: TEIJIN ARAMID B.V.Inventors: Anton Peter De Weijer, Marinus Johannes Gerardus Journee, Martinus Wilhelmus Maria Gemma Peters, Ernst Michael Winkler
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Patent number: 7838622Abstract: This invention is to provide a dope that has excellent formability and can be formed into a fiber, a film, pulp-shaped particles and the like by a wet method. This invention is also to provide a process for the production of a fiber excellent in heat resistance, strength and elastic modulus. This invention provides a dope and a process for the production of a fiber from the dope, the dope including a polyamide and a basic solvent, the polyamide containing a recurring unit of the following formula (I), wherein Ar1 represents at least one substituent selected from the group consisting of and having an inherent viscosity of 1.0 or more, the dope has a polyamide concentration of over 10% by weight but not more than 25% by weight and exhibits optical anisotropy at 50° C.Type: GrantFiled: November 1, 2006Date of Patent: November 23, 2010Assignees: Teijin Limited, Teijin Techno Products LimitedInventors: Masayuki Chokai, Anton Peter De Weijer, Hiroaki Kuwahara, Dennis Wilbers
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Publication number: 20100234538Abstract: There are provided fibers having excellent mechanical strength such as tensile strength and elastic modulus and a polyamide that is a raw material of the fibers. The polyamide is a polyamide (X) which mainly comprises recurring units represented by the following formulae (A) and (B): has an inherent viscosity measured at 30° C. in 0.5 g/100 ml of concentrated sulfuric acid solution of 0.05 to 20 dl/g and has a substituent represented by the following formula (C): wherein Ar3 is a trivalent aromatic hydrocarbon group having 6 to 20 carbon atoms, and Ar4 is a monovalent aromatic hydrocarbon group having 6 to 20 carbon atoms, at at least some of terminals, and the fibers are fibers formed from the polyamide (X).Type: ApplicationFiled: February 14, 2007Publication date: September 16, 2010Applicant: Teijin LimitedInventors: Masayuki Chokai, Anton Peter De Weijer, Hiroaki Kuwahara, Theo Dingemans
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Publication number: 20100222544Abstract: This invention seeks to provide a fiber formed of an aromatic polyazole that has a high molecular weight and is excellent in mechanical properties such as elastic modulus, strength, etc., and a process for the production thereof. This invention provides a fiber formed of a polyazole containing a recurring unit of the following formula (1), wherein Ar1 is a divalent aromatic group having 4 to 20 carbon atoms, Ar2 is a tetravalent aromatic group having 4 to 20 carbon atoms and each X is O, S or NH, and having a phosphorus atom content of 30 ppm or less, and a process for the production thereof.Type: ApplicationFiled: November 2, 2006Publication date: September 2, 2010Applicant: Teijin LimitedInventors: Masayuki Chokai, Anton Peter De Weijer, Susumu Honda, Hiroaki Kuwahara, Dennis Wilbers
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Publication number: 20100144224Abstract: The present invention pertains to a UHMWPE film having a tensile strength of at least 2.0 GPa, a tensile energy to break of at least 30 J/g, an Mw of at least 500 000 gram/mole, and a Mw/Mn ratio of at most 6. The film may be manufactured via a process which comprises subjecting a starting UHMWPE with a weight average molecular weight of at least 500 000 gram/mole, an elastic shear modulus determined directly after melting at 160° C. of at most 0.9 MPa, and a Mw/Mn ratio of at most 6 to a compacting step and a stretching step under such conditions that at no point during the processing of the polymer its temperature is raised to a value above its melting point. The film may be used as starting material in any applications where high tensile strength and high energy to break are important. Suitable applications include ballistic applications, ropes, cables, nets, fabrics, and protective applications.Type: ApplicationFiled: July 2, 2008Publication date: June 10, 2010Applicant: TEIJIN ARAMID B.V.Inventors: Anton Peter De Weijer, Hendrik Van De Hee, Martinus Wilhelmis Maria Gemma Peters, Sanjay Rastogi, Bing Wang
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Publication number: 20100121017Abstract: The invention relates to a fiber, pulp, fibril, or fibrid comprising polybenzazole having a repeating unit of formula (I) or (II) wherein Ar1 and Ar2 are independently an aromatic group having 4 to 12 carbon atoms, Ar1 has the para configuration and 40-100% of the repeating units are repeating unit I and/or repeating unit II and wherein the polybenzazole contains less than 1500 ppm of non-extractable phosphorus compound if 100% of the repeating units are repeating unit I and/or repeating unit II and X and Y are the same. The method allows the manufacture of phosphorous element free a fiber, pulp, fibril, or fibrid containing said polybenzazole precursor or polybenzazole and a spinning method for obtaining said fiber, pulp, fibril, or fibrid.Type: ApplicationFiled: April 24, 2008Publication date: May 13, 2010Applicant: TIEJIN ARAMID B.V.Inventors: Anton Peter De Weijer, Masayuki Chokai, Hiroaki Kuwahara, Dennis Wilbers
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Patent number: 7652124Abstract: There are provided a rigid heterocyclic polymer comprising rigid recurring units such as units represented by the following formulae (a) and (b): wherein X is O, S or NH, a production process thereof, and fibers comprising the polymer.Type: GrantFiled: April 12, 2005Date of Patent: January 26, 2010Assignees: Teijin Limited, Teijin Techno Products LimitedInventors: Masayuki Chokai, Anton Peter De Weijer, Hiroaki Kuwahara, Shunichi Matsumura
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Publication number: 20090127735Abstract: The object of this invention is to provide a dope that has excellent formability and can be formed into a fiber, a film, pulp-shaped particles and the like by a wet method. The object of this invention is also to provide a process for the production of a fiber excellent in heat resistance, strength and elastic modulus. This invention provides a dope and a process for the production of a fiber from the dope, the dope comprising a polyamide and a basic solvent, the polyamide containing a recurring unit of the following formula (I), wherein Ar1 represents at least one substituent selected from the group consisting of and having an inherent viscosity of 1.0 or more, the dope has a polyamide concentration of over 10% by weight but not more than 25% by weight and exhibits optical anisotropy at 50° C.Type: ApplicationFiled: November 1, 2006Publication date: May 21, 2009Applicants: TEIJIN LIMITED, TEIJIN TECHNO PRODUCTS LIMITEDInventors: Masayuki Chokai, Anton Peter De Weijer, Hiroaki Kuwahara, Dennis Wilbers
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Publication number: 20090088505Abstract: The object of this invention is to provide a dope containing a polyamide having a hydroxyl-group-possessing aromatic ring, which exhibits optical anisotropy and has excellent formability, and the dope contains a polymer having a recurring unit of the following formula (I), wherein Ar1 is and having an inherent viscosity of 1.0 or more and a strong-acidity solvent, has a polymer concentration of 5 to 30% by weight and exhibits optical anisotropy at 50° C.Type: ApplicationFiled: May 22, 2006Publication date: April 2, 2009Applicants: Teijin Limited, Teijin Techno Products LimitedInventors: Masayuki Chokai, Anton Peter De Weijer, Susumu Honda, Hiroaki Kuwahara
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Publication number: 20080214772Abstract: There are provided a rigid heterocyclic polymer comprising rigid recurring units such as units represented by the following formulae (a) and (b): wherein X is O, S or NH, a production process thereof, and fibers comprising the polymer.Type: ApplicationFiled: April 12, 2005Publication date: September 4, 2008Inventors: Masayuki Chokai, Anton Peter De Weijer, Hiroaki Kuwahara, Shunichi Matsumura
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Patent number: 6423262Abstract: The invention pertains to a technique for determining the dye uptake or measuring one or more structural parameters or mechanical properties of polymeric fibres. This technique entails measuring the Raman spectrum of the fibres during or after a spinning process. After the Raman spectrum has been treated, a model is applied to it which is derived from the Raman spectra of fibres having the same chemical composition as the fibres to be examined.Type: GrantFiled: May 1, 2000Date of Patent: July 23, 2002Assignee: Akzo Nobel N.V.Inventors: Robert Jan Van Wijk, Anton Peter De Weijer, Dirk Albert Klarenberg, Roel De Jonge, Gert Jan Jongerden