Methods of ring opening polymerization and catalysts therefor
    3.
    发明授权
    Methods of ring opening polymerization and catalysts therefor 有权
    开环聚合方法及其催化剂

    公开(公告)号:US08507640B2

    公开(公告)日:2013-08-13

    申请号:US12859336

    申请日:2010-08-19

    IPC分类号: C07D245/00 C08G63/00

    摘要: A salt catalyst comprises an ionic complex of i) a nitrogen base comprising one or more guanidine and/or amidine functional groups, and ii) an oxoacid comprising one or more active acid groups, the active acid groups independently comprising a carbonyl group (C═O), sulfoxide group (S═O), and/or a phosphonyl group (P═O) bonded to one or more active hydroxy groups; wherein a ratio of moles of the active hydroxy groups to moles of the guanidine and/or amidine functional groups is greater than 0 and less than 2.0. The salt catalysts are capable of catalyzing ring opening polymerization of cyclic carbonyl compounds.

    摘要翻译: 盐催化剂包括i)包含一个或多个胍和/或脒官能团的氮碱的离子络合物,和ii)包含一个或多个活性酸基团的含氧酸,所述活性酸基团独立地包含羰基(C = O),亚砜基(S = O)和/或与一个或多个活性羟基键合的膦酰基(P = O); 其中所述活性羟基的摩尔数与所述胍和/或脒官能团的摩尔数之比大于0且小于2.0。 盐催化剂能够催化环羰基化合物的开环聚合。

    METHODS OF RING OPENING POLYMERIZATION AND CATALYSTS THEREFOR
    4.
    发明申请
    METHODS OF RING OPENING POLYMERIZATION AND CATALYSTS THEREFOR 有权
    环形聚合方法及其催化剂

    公开(公告)号:US20120046437A1

    公开(公告)日:2012-02-23

    申请号:US12859336

    申请日:2010-08-19

    IPC分类号: C07D245/00 C08G63/08

    摘要: A salt catalyst comprises an ionic complex of i) a nitrogen base comprising one or more guanidine and/or amidine functional groups, and ii) an oxoacid comprising one or more active acid groups, the active acid groups independently comprising a carbonyl group (C═O), sulfoxide group (S═O), and/or a phosphonyl group (P═O) bonded to one or more active hydroxy groups; wherein a ratio of moles of the active hydroxy groups to moles of the guanidine and/or amidine functional groups is greater than 0 and less than 2.0. The salt catalysts are capable of catalyzing ring opening polymerization of cyclic carbonyl compounds.

    摘要翻译: 盐催化剂包含i)包含一个或多个胍和/或脒官能团的氮碱的离子络合物,和ii)包含一个或多个活性酸基团的含氧酸,所述活性酸基团独立地包含羰基(C = O),亚砜基(S = O)和/或与一个或多个活性羟基键合的膦酰基(P = O); 其中所述活性羟基的摩尔数与所述胍和/或脒官能团的摩尔数之比大于0且小于2.0。 盐催化剂能够催化环羰基化合物的开环聚合。

    ANTIMICROBIAL HYDROGELS, METHODS OF PREPARATION THEREOF, AND ARTICLES THEREFROM
    10.
    发明申请
    ANTIMICROBIAL HYDROGELS, METHODS OF PREPARATION THEREOF, AND ARTICLES THEREFROM 有权
    抗微生物水凝胶,其制备方法及其制品

    公开(公告)号:US20120231060A1

    公开(公告)日:2012-09-13

    申请号:US13213555

    申请日:2011-08-19

    摘要: A covalently crosslinked hydrogel comprises a) three or more divalent poly(alkylene oxide) chains P′ covalently linked at respective first end units to a branched first core group C′, b) three or more divalent poly(alkylene oxide) chains P″ covalently linked at respective first end units to a branched second core group C″, the chains P″ comprising respective second end units which are covalently linked to between 0% and 100% of respective second end units of chains P′ by divalent linking groups L″, and c) at least one pendant cationic block copolymer chain A′-B′. A′-B′ comprises i) a divalent block A′ comprising a poly(alkylene oxide) backbone chain having an end unit covalently linked to a second end unit of one of the chains P′ by a divalent linking group L′, and ii) a monovalent block B′ comprising a first repeat unit, the first repeat unit comprising a backbone carbonate group and a cationic side chain group.

    摘要翻译: 共价交联的水凝胶包含a)在相应的第一端单元共价连接到支化的第一核心基团C'上的三个或更多个二价聚(环氧烷)链P',b)共价地三个或更多个二价聚(环氧烷)链P' 在相应的第一末端单元连接到支化的第二核心基团C“,链P”包括各自的第二末端单元,其通过二价连接基团L“共价连接到链P'的相应的第二末端单元的0%和100%之间 ,和c)至少一个阳离子嵌段共聚物链A'-B'。 A'-B'包括:i)包含聚(环氧烷)主链的二价嵌段A',其具有通过二价连接基团L'与链P'之一共价连接的末端单元,ii )包含第一重复单元的单价嵌段B',所述​​第一重复单元包含骨架碳酸酯基团和阳离子侧链基团。