Diamines Having Reduced Color
    1.
    发明申请
    Diamines Having Reduced Color 审中-公开
    减少颜色的二胺

    公开(公告)号:US20080315155A1

    公开(公告)日:2008-12-25

    申请号:US12096133

    申请日:2006-12-21

    IPC分类号: C07C209/26 C09K3/00

    摘要: This invention provides compositions which comprise at least one aromatic secondary diamine having a Gardner color number no more than about 6. The aromatic secondary diamine either is in the form of one benzene ring having two secondary amino groups on the ring, or is in the form of two benzene rings connected by an alkylene bridge and having one secondary amino group on each ring. At least one N,N′-dihydrocarbylhydroxylamine is optionally present in the composition. Processes for producing such compositions are also provided.

    摘要翻译: 本发明提供了包含至少一种具有加德纳色数不超过约6的芳族仲胺的组合物。芳族仲胺或者是环上具有两个仲氨基的一个苯环的形式,或者是其形式 的两个苯环通过亚烷基桥连接并且在每个环上具有一个仲氨基。 至少一种N,N'-二烃基羟胺任选地存在于组合物中。 还提供了用于生产这种组合物的方法。

    Process for stabilizing organophosphorus compounds
    2.
    发明授权
    Process for stabilizing organophosphorus compounds 失效
    稳定有机磷化合物的方法

    公开(公告)号:US5208362A

    公开(公告)日:1993-05-04

    申请号:US842653

    申请日:1992-02-27

    CPC分类号: C07F9/025

    摘要: Organophosphorus compounds are stabilized against decomposition during and after recovery from their synthesis reaction mixtures by the addition to the synthesis reaction mixture of at least 0.5% by weight of an acid scavenger, based on the weight of the organophosphorus compound, before allowing the organophosphorus compound to crystallize. The invention is of particular value in the stabilization of 2,2'-alkylidenebis(dialkylphenyl)fluorophosphonites, such as 2,2'-ethylidenebis(4,6-di-t-butylphenyl)fluorophosphite, which is rendered more suitable for use as a stabilizer for organic polymers, e.g., polycarbonates, by the practice of the invention.

    Blends of Diamines Having Reduced Color
    3.
    发明申请
    Blends of Diamines Having Reduced Color 审中-公开
    减少颜色的二胺的共混物

    公开(公告)号:US20080262187A1

    公开(公告)日:2008-10-23

    申请号:US12096128

    申请日:2006-12-21

    摘要: This invention provides a blend which comprises (i) at least one aromatic primary diamine, with which has been blended a color-minimizing amount of at least one N,N-dmydrocarbylhydroxylamine, wherein the aromatic primary diamine is in the form of one benzene ring having two primary amino groups on the ling, which amino groups are meta or para relative to each other, and in which each position ortho to a primary amino group bears an alkyl group, and (ii) at least one aromatic secondary diamine having a Gardner color number no more than about 7, wherein said aromatic secondary diamine either is in the form of one benzene ring having two secondary amino groups on the ring, or is in the form of two benzene rings connected by an alkylene bridge and having one secondary amino group on each ring. Optionally, at least one N,N-dihydrocarbylhydroxylamine has been blended with the aromatic secondary diamine.

    摘要翻译: 本发明提供了一种共混物,其包含(i)至少一种芳族伯二胺,与其配合着色最小化量的至少一种N,N-二烃基羟胺,其中芳族伯胺为一个苯环形式 在氨基上具有两个伯氨基,这些氨基相对于彼此是间位或对位的,并且其中与伯氨基邻位的每个位置都具有烷基,和(ii)至少一种具有加德纳的芳族仲胺 颜色数不超过约7,其中所述芳族仲胺是环上具有两个仲氨基的一个苯环的形式,或者是由亚烷基桥连接并具有一个仲氨基的两个苯环的形式 组在每个戒指 任选地,将至少一种N,N-二烃基羟胺与芳族仲胺共混。