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Patent Agency Ranking
公开(公告)号：US20160152811A1
公开(公告)日：2016-06-02
申请号：US14905349
申请日：2014-07-17
Applicant: UNIVERSITY OF MAINE SYSTEM BOARD OF TRUSTEES
Inventor： Douglas J. Gardner , Yousoo Han , Yucheng Peng
CPC classification number: C08L23/12 , B29C43/003 , B29C45/0001 , B29C64/165 , B29K2023/08 , B29K2023/14 , B29K2073/00 , B29K2201/00 , B33Y10/00 , B33Y70/00 , C08J3/226 , C08J5/005 , C08J2323/12 , C08J2451/06 , C08L1/00 , C08L1/04 , C08L23/10 , C08L51/06 , C08L2205/16 , C08L2310/00
Abstract: The present invention provides, among other things, compositions comprising nanofibrils, at least one maleic-anhydride (MA) copolymer and at least one matrix polymer, and methods of making such compositions. The provided methods and compositions allow for the production of composites with unexpectedly superior properties including improved impact resistance, tensile modulus of elasticity, tensile strength, and flexural modulus of elasticity as compared to previously known composites. In some embodiments, the present invention provides methods including the steps of providing cellulose nanofibrils, associating the cellulose nanofibrils with a maleic-anhydride (MA) copolymer to form a nanofibril-MA copolymer blend, preparing the nanofibril-MA copolymer blend for addition to a matrix polymer, and forming a composite by associating the nanofibril-MA copolymer blend with the matrix polymer, wherein the amount of cellulose nanofibrils in the composite is between 3% and 50% by weight of the composite.
Abstract translation: 本发明尤其提供包含纳米原纤维，至少一种马来酸酐（MA）共聚物和至少一种基质聚合物的组合物以及制备这种组合物的方法。 所提供的方法和组合物允许与先前已知的复合材料相比，具有意想不到的优异性能的复合材料的生产，包括改进的抗冲击性，拉伸弹性模量，拉伸强度和挠曲弹性模量。 在一些实施方案中，本发明提供了包括以下步骤的方法：提供纤维素纳米原纤维，将纤维素纳米原纤维与马来酸酐（MA）共聚物缔合以形成纳米纤维MA共聚物共混物，制备纳米纤维MA共聚物共混物， 基质聚合物，并通过将纳米纤维-MA共聚物共混物与基质聚合物缔合而形成复合材料，其中复合材料中纤维素纳米原纤维的量为复合材料重量的3％至50％。
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公开(公告)号：US20200239690A1
公开(公告)日：2020-07-30
申请号：US16483149
申请日：2018-02-01
Inventor： Duncan Mayes , Janne Pynnonen , Christopher H. West , Douglas J. Gardner , Yousoo Han
Abstract: The present invention is directed to a composite material comprising a cellulosic material, high impact polystyrene (HIPS) and styrene maleic anhydride (SMA). The cellulosic material may be thermally modified prior to being incorporated into the composite material. The present invention is also directed to a composite product that comprises the composite material according to the invention.
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公开(公告)号：US11034838B2
公开(公告)日：2021-06-15
申请号：US16483149
申请日：2018-02-01
Inventor： Duncan Mayes , Janne Pynnonen , Christopher H. West , Douglas J. Gardner , Yousoo Han
Abstract: The present invention is directed to a composite material comprising a cellulosic material, high impact polystyrene (HIPS) and styrene maleic anhydride (SMA). The cellulosic material may be thermally modified prior to being incorporated into the composite material. The present invention is also directed to a composite product that comprises the composite material according to the invention.
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公开(公告)号：US11873582B2
公开(公告)日：2024-01-16
申请号：US16762082
申请日：2018-11-15
Applicant: University of Maine System Board of Trustees
Inventor： Douglas J. Gardner , Lu Wang , Jordan Elliott Sanders
IPC: D01F6/04 , B33Y10/00 , B33Y30/00 , B29C64/118 , B33Y70/10 , C08K7/02 , C08L23/12 , C08L23/14 , C08L23/10 , B29K1/00 , B29K101/12 , B29K105/12
CPC classification number: D01F6/04 , B29C64/118 , B33Y10/00 , B33Y30/00 , B33Y70/10 , C08K7/02 , C08L23/10 , C08L23/12 , C08L23/14 , B29K2001/00 , B29K2101/12 , B29K2105/124 , C08L2205/16 , C08L23/12 , C08L51/06 , C08L1/02
Abstract: Presented herein are materials, methods, and systems for the improved 3D printing improved 3D printing of materials that include polypropylene. In some embodiments, the present disclosure provides a composite comprising a polymer matrix and a plurality of fibers for improved 3D printing. For example, the polymer matrix may have a composition that includes a polymer blend of polypropylene (PP) and polyethylene (PE) (e.g., high density polyethylene (HDPE), low density polyethylene (LDPE), linear low-density polyethylene (LLDPE)), impact modified polypropylene copolymer and/or polypropylene random copolymer with a plurality of fibers. In some embodiments, the plurality of fibers comprises cellulosic nanofibers (e.g., natural cellulosic nanofibers, e.g., cellulose nanofibrils). In some embodiments, filaments are prepared from the composites by melt compounding the polymer matrix (e.g., PP copolymers and/or PP/PE pellets) with a plurality of fibers and extruding the mixture.
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公开(公告)号：US10280294B2
公开(公告)日：2019-05-07
申请号：US14905349
申请日：2014-07-17
Applicant: University of Maine System Board of Trustees
Inventor： Douglas J. Gardner , Yousoo Han , Yucheng Peng
IPC: C08J3/22 , C08J5/00 , C08L1/00 , C08L1/04 , B29C43/00 , B29C45/00 , B29K23/00 , B29K73/00 , B33Y10/00 , B33Y70/00 , C08L23/10 , C08L23/12 , C08L51/06 , B29C64/165 , B29K201/00
Abstract: The present invention provides, among other things, compositions comprising nanofibrils, at least one maleic-anhydride (MA) copolymer and at least one matrix polymer, and methods of making such compositions. The provided methods and compositions allow for the production of composites with unexpectedly superior properties including improved impact resistance, tensile modulus of elasticity, tensile strength, and flexural modulus of elasticity as compared to previously known composites. In some embodiments, the present invention provides methods including the steps of providing cellulose nanofibrils, associating the cellulose nanofibrils with a maleic-anhydride (MA) copolymer to form a nanofibril-MA copolymer blend, preparing the nanofibril-MA copolymer blend for addition to a matrix polymer, and forming a composite by associating the nanofibril-MA copolymer blend with the matrix polymer, wherein the amount of cellulose nanofibrils in the composite is between 3% and 50% by weight of the composite.
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