LIGNIN-BASED EPOXIDE PREPOLYMERS, POLYMERS, RELATED COMPOSITIONS, AND RELATED METHODS

    公开(公告)号:WO2022140323A1

    公开(公告)日:2022-06-30

    申请号:PCT/US2021/064513

    申请日:2021-12-21

    IPC分类号: B05D1/02 B05D1/18 B05D1/28

    摘要: The disclosure relates to epoxidized lignin prepolymers, related methods of making the prepolymers, cured epoxy resins formed from the prepolymers, articles including a coating of the cured epoxy resins, and related curing methods and compositions. The epoxidized lignin prepolymer has an epoxide functionality in a range of 2 to 8 and a high solubility in various common organic solvents. The high solubility permits incorporation of the epoxidized lignin prepolymer into an epoxy system which cures after addition of curing agents at high enough concentrations to allow replacement of conventional epoxide prepolymers at levels up to 100% replacement. Using other biobased materials in addition to lignin, for example biobased epichlorohydrin to epoxidize the lignin and a biobased hardener to cure the prepolymer, can provide a corresponding cured epoxy resin that is formed from completely biobased materials.

    과산화칼슘을 이용한 카테콜아민 코팅 방법 및 이를 이용한 저-결합 세포 배양 플레이트 제조방법

    公开(公告)号:WO2021015372A1

    公开(公告)日:2021-01-28

    申请号:PCT/KR2019/017320

    申请日:2019-12-09

    摘要: 과산화칼슘을 이용한 카테콜아민 코팅 방법 및 이를 이용한 저-결합 세포 배양 플레이트 제조방법에 관한 것으로, 구체적으로는 과산화칼슘(CaO 2 )이 첨가된 카테콜아민 용액에 코팅하고자 하는 기재를 침지시키는 단계를 포함하는 카테콜아민 코팅 방법 및 상기 방법에 의하여 카테콜아민이 코팅된 기재를 아민-반응성 PEG(mPEG) 용액에 침지시키는 단계를 포함하는 저-결합 세포 배양 플레이트 제조방법에 관한 것이다. 본 발명에서는 산소 공급 시약으로서 과산화칼슘을 이용한 생체 적합 물질의 표면 개질 기술을 개발하였다. 상기 과산화칼슘을 통한 산소 공급은 DA(dopamine hydrochloride) 산화를 촉진하여 신속하게 아민이 풍부한 기질을 생성하였으며, 간단한 침지 공정으로 저-결합 배양 플레이트를 제조할 수 있었으며, 상기 저-결합 배양 플레이트에서 배양된 세포는 다른 배양 플레이트에 비하여 보다 크고 컴팩트한 세포 스페로이드를 형성하였다.

    IMPROVED METHOD FOR APPLYING SILANE-BASED COATINGS ON SOLID SURFACES, IN PARTICULAR ON METAL SURFACES

    公开(公告)号:WO2020165032A1

    公开(公告)日:2020-08-20

    申请号:PCT/EP2020/053084

    申请日:2020-02-07

    申请人: CHEMETALL GMBH

    摘要: The present invention refers to an improved method for applying silane-based coatings to solid surfaces, in particular metal surfaces, wherein a solid surface, in particular an optionally anodized or conversion-coated metal surface, is i) optionally cleaned, etched and/or desmutted, ii) brought into contact with at least one unhydrolyzed silane such that an unhydrolyzed silane layer is formed on the solid surface, iii) brought into contact with water such that the silane layer is at least partially hydrolyzed, iv) at least partially dried such that residues of water and alkanol are at least partially removed from the solid surface, v) optionally heated such that the at least partially hydrolyzed and least partially dried silane layer is cured, and vi) in case that step v) is conducted, optionally painted. The present invention also relates to an according silane-containing composition as well as to a solidsurface, in particular a metal surface, with an according silane-based coating and its use in the field of transportation industry or electrically conductive assembling.

    TRAITEMENT HYDROPHOBE DU BOIS
    10.
    发明申请

    公开(公告)号:WO2018224490A1

    公开(公告)日:2018-12-13

    申请号:PCT/EP2018/064751

    申请日:2018-06-05

    摘要: La présente invention vise un procédé d'estérification de tout ou partie des fonctions hydroxyles d'un matériau de type bois et/ou de l'un de ses produits dérivés caractérisé ce en qu'il met en contact ledit matériau avec un fluide à un état supercritique véhiculant au moins une huile végétale naturelle insaturée dans des conditions propices à la réalisation de ladite estérification, comprenant au moins les étapes consistant à : i) disposer, au sein d'une enceinte, d'un matériau de type bois, possédant de préférence une teneur en eau inférieure à 20% en poids par rapport à son poids total, et d'au moins une huile végétale naturelle insaturée véhiculée, de préférence solubilisée, dans un fluide liquide apte à évoluer sous pression à un état supercritique. ii) imposer à l'ensemble des conditions de pression efficaces à l'imprégnation dudit matériau par ladite huile et iii) exposer ledit matériau imprégné par ladite huile obtenu en étape ii) à des conditions de pression et températures efficaces pour faire évoluer ledit fluide à un état supercritique et réaliser ladite réaction d'estérification.