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    Additive manufacturing support material
    3.
    发明授权
    Additive manufacturing support material 有权

    公开(公告)号：US11692070B2

    公开(公告)日：2023-07-04

    申请号：US16603158

    申请日：2018-04-05

    Applicant: Carnegie Mellon University

    Inventor： Andrew Hudson ,  Thomas Hinton ,  Adam Feinberg ,  Andrew Lee

    IPC: C08L1/00 ,  C08L89/00 ,  C08G61/04 ,  C08J3/075 ,  B33Y70/00 ,  C09D11/04 ,  B29C64/40

    CPC classification number: C08J3/075 ,  B33Y70/00 ,  C09D11/04 ,  B29C64/40 ,  C08J2389/00 ,  C08J2389/04

    Abstract: This document describes a process of producing gel microparticles, which are consistent in size and morphology. Through the process of coacervation, large volumes of gel microparticle slurry can be produced by scaling up reactor vessel size. Particles can be repeatedly dehydrated and rehydrated in accordance to their environment, allowing for the storage of particles in a non-solvent such as ethanol. Gel slurries exhibit a Bingham plastic behavior in which the slurry behaves as a solid at shear stresses that are below a critical value. Upon reaching the critical shear stress, the slurry undergoes a rapid decrease in viscosity and behaves as a liquid. The rheological behavior of these slurries can be adjusted by changing the compaction processes such as centrifugation force to alter the yield-stress. The narrower distribution and reduced size of these particles allows for an increase in FRESH printing fidelity.

    Compositions and films comprised of avian feather keratin
    5.
    发明授权
    Compositions and films comprised of avian feather keratin 失效
    组成和电影由鸟类羽毛角蛋白组成

    公开(公告)号：US07066995B1

    公开(公告)日：2006-06-27

    申请号：US10805558

    申请日：2004-03-19

    Applicant: Justin R. Barone ,  Walter F. Schmidt

    Inventor： Justin R. Barone ,  Walter F. Schmidt

    IPC: C08L89/04 ,  C09D189/04

    CPC classification number: A01G13/0275 ,  A01G9/1438 ,  C05F1/005 ,  C08J5/18 ,  C08J2389/04 ,  C08L89/06 ,  C09K17/52 ,  Y02A40/203 ,  Y02A40/252 ,  Y02P20/145 ,  Y10S47/902 ,  C05G3/0052

    Abstract: A composition suitable for making films, wherein the composition contains keratin obtained from avian feathers and at least one OH containing plasticizer. Protein-based films containing at least one protein and at least one OH containing plasticizer, wherein the protein is a protein whose PE value is ≧2.5 where PE=(S+T+Y)/C where PE is plasticizer efficiency and where S, T, Y, and C are the amino acids serine, threonine, tyrosine, and cysteine, respectively, in the protein. Preferably the protein is keratin obtained from avian feathers.

    Abstract translation: 适用于制造薄膜的组合物，其中组合物含有从鸟类羽毛获得的角蛋白和至少一种含有OH的增塑剂。 含有至少一种蛋白质和至少一种含有OH的增塑剂的蛋白质基膜，其中所述蛋白质是PE值> = 2.5的蛋白质​​，其中PE =（S + T + Y）/ C，其中PE是增塑剂效率，并且其中S ，T，Y和C分别是蛋白质中的氨基酸丝氨酸，苏氨酸，酪氨酸和半胱氨酸。 优选地，蛋白质是从鸟类羽毛获得的角蛋白。

    Modified collagen fiber, and preparation method and application
    7.
    发明授权
    Modified collagen fiber, and preparation method and application 有权

    公开(公告)号：US11674007B2

    公开(公告)日：2023-06-13

    申请号：US17739080

    申请日：2022-05-07

    Applicant: SICHUAN UNIVERSITY

    Inventor： Shuangyang Li ,  Bi Shi ,  Jianfei Zhou ,  Weixing Xu

    IPC: C08J5/04 ,  C08J5/12 ,  B29C71/02 ,  C08L75/04

    CPC classification number: C08J5/045 ,  C08J5/121 ,  C08J7/08 ,  C08L75/04 ,  C08J2375/04 ,  C08J2389/04 ,  C08L2205/16

    Abstract: A modified collagen fiber preparation method and application are provided. The modified collagen fiber is prepared by modifying a collagen fiber with a plant tannin; and a method of the preparation includes: mixing the plant tannin with the collagen fiber in a liquid environment with a pH of 5 to 8 to allow a reaction, and washing and drying a product. In the present disclosure, a plant tannin rich in phenolic hydroxyl can be combined with a collagen fiber in various ways such as multi-point hydrogen bonding and hydrophobic bonding, such that the plant tannin structure is introduced into a natural multi-layer micro/nano-structure of the collagen fiber; and due to a large number of phenolic hydroxyl structures in the plant tannin, the collagen fiber introduced with the plant tannin structure shows improved compatibility with a waterborne resin, and can produce strong hydrogen bonding with polar groups in the waterborne resin.

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