Process to polymerize AB-PBO monomer phosphate salts
    3.
    发明授权
    Process to polymerize AB-PBO monomer phosphate salts 失效
    聚合AB-PBO单体磷酸盐的方法

    公开(公告)号:US5210171A

    公开(公告)日:1993-05-11

    申请号:US546597

    申请日:1990-06-29

    IPC分类号: C07C227/06 C08G73/22

    CPC分类号: C08G73/22 C07C227/06

    摘要: AB-polybenzoxazole monomer, such as 3-amino-4-hydroxybenzoic acid, can be synthesized in high yields from a hydroxy-benzoic acid or related compound in a three-step process of (1) nitration, (2) hydrolysis of the ester, and (3) reduction of the nitro moiety. The monomer is conveniently recovered as a phosphate salt in high purity by precipitating and recrystallizing from a phosphoric acid solution. The monomer may be polymerized in high concentrations in polyphosphoric acid containing high levels of P.sub.2 O.sub.5 to yield a high molecular weight polymer without dehydrohalogenation.

    摘要翻译: 可以在(1)硝化的三步法中,从羟基 - 苯甲酸或相关化合物以高产率合成AB-聚苯并恶唑单体,例如3-氨基-4-羟基苯甲酸,(2)酯的水解 ,和(3)还原硝基部分。 通过从磷酸溶液中沉淀和重结晶,可以方便地将单体作为高纯度的磷酸盐回收。 单体可以在含有高含量的P 2 O 5的多磷酸中以高浓度聚合,得到高分子量聚合物,而无需脱卤化氢。

    Phosphate salts of AB-polybenzoxazole monomer
    5.
    发明授权
    Phosphate salts of AB-polybenzoxazole monomer 失效
    AB-聚苯并恶唑单体的磷酸盐

    公开(公告)号:US5068384A

    公开(公告)日:1991-11-26

    申请号:US546596

    申请日:1990-06-29

    IPC分类号: C07C227/06 C08G73/22

    CPC分类号: C07C227/06 C08G73/22

    摘要: AB-polybenzoxazole monomer, such as 3-amino-4-hydroxybenzoic acid, can be synthesized in high yields from a hydroxy-benzoic acid or related compound in a three-step process of (1) nitration, (2) hydrolysis of the ester, and (3) reduction of the nitro moiety. The monomer is conveniently recovered as a phosphate salt in high purity by precipitating and recrystallizing from a phosphoric acid solution.

    摘要翻译: 可以在(1)硝化的三步法中,从羟基 - 苯甲酸或相关化合物以高产率合成AB-聚苯并恶唑单体,例如3-氨基-4-羟基苯甲酸,(2)酯的水解 ,和(3)还原硝基部分。 通过从磷酸溶液中沉淀和重结晶,可以方便地将单体作为高纯度的磷酸盐回收。

    Process to synthesize AB-PBO monomer and phosphate salts thereof
    7.
    发明授权
    Process to synthesize AB-PBO monomer and phosphate salts thereof 失效
    合成AB-PBO单体及其磷酸盐的方法

    公开(公告)号:US4959492A

    公开(公告)日:1990-09-25

    申请号:US380567

    申请日:1989-07-14

    CPC分类号: C07C227/06 C08G73/22

    摘要: AB-polybenzoxazole monomer, such as 3-amino-4-hydroxybenzoic acid, can be synthesized in high yields from a hydroxy-benzoic acid or related compound in a three-step process of (1) nitration, (2) hydrolysis of the ester, and (3) reduction of the nitro moiety. The monomer is conveniently recovered as a phosphate salt in high purity by precipitating and recrystallizing from a phosphoric acid solution.

    摘要翻译: 可以在(1)硝化的三步法中,从羟基 - 苯甲酸或相关化合物以高产率合成AB-聚苯并恶唑单体,例如3-氨基-4-羟基苯甲酸,(2)酯的水解 ,和(3)还原硝基部分。 通过从磷酸溶液中沉淀和重结晶,可以方便地将单体作为高纯度的磷酸盐回收。

    Caddy assembly
    10.
    发明授权
    Caddy assembly 有权
    球童装配

    公开(公告)号:US09320268B1

    公开(公告)日:2016-04-26

    申请号:US14096266

    申请日:2013-12-04

    申请人: William J. Harris

    发明人: William J. Harris

    IPC分类号: A01K97/10

    CPC分类号: A01K97/10

    摘要: A caddy assembly for carrying a fishing rod includes a tripod that may be positioned on a support surface. A head is movably coupled to the tripod. The head is positionable at a selected angle with respect to the tripod. A handle is coupled to the head. The handle may be gripped. A carrier is coupled to the head. The carrier may carry a fishing rod.

    摘要翻译: 用于承载钓鱼竿的球笼组件包括可以定位在支撑表面上的三脚架。 头部可移动地联接到三脚架。 头可相对于三脚架定位在选定的角度。 把手与头部相连。 手柄可能被夹紧。 载体连接到头部。 承运人可携带钓竿。