Methods for Preparing Oxydiphthalic Anhydrides, Oxydiphthalic Anhydrides Prepared Thereby, and Polyetherimides Derived Therefrom
    41.
    发明申请
    Methods for Preparing Oxydiphthalic Anhydrides, Oxydiphthalic Anhydrides Prepared Thereby, and Polyetherimides Derived Therefrom 有权
    制备氧联二邻苯二甲酸酐,由此制备的氧联二邻苯二甲酸酐的方法及其衍生的聚醚酰亚胺

    公开(公告)号:US20090247725A1

    公开(公告)日:2009-10-01

    申请号:US12058331

    申请日:2008-03-28

    CPC classification number: C07D307/88 C07D307/89 C08G73/1046

    Abstract: a method for preparing an oxydiphthalic anhydride comprises contacting, under reactive and substantially anhydrous conditions in a reactor, at least one halophthalic anhydride containing more than 250 ppm chlorophthalide impurity with a carbonate of the formula M2CO3, wherein M is an alkali metal, in the presence of a catalytic proportion of at least one phase transfer catalyst selected from the group consisting of hexaalkylguanidinium halides and alpha,omega-bis(pentaalkylguanidinium)alkane salts, phosphonium salts, phosphazenium salts, pyridinium salts, phosphazenium salts, ammonium salts, and combinations thereof. The phase transfer catalyst is present in a sufficient amount to prepare the oxydiphthalic anhydride when the chlorophthalide is present in an amount that is more than 250 ppm, and the oxydiphthalic anhydride is produced in a yield, based on the carbonate, of at least 70%.

    Abstract translation: 一种制备氧联二邻苯二甲酸酐的方法包括在反应器和反应性基本上无水的条件下,在反应器中使至少一种含有多于250ppm氯酞酸盐杂质的卤代邻苯二甲酸酐与式M2CO3的碳酸盐接触,其中M为碱金属, 选自六烷基卤化镓和α,ω-双(五烷基胍)烷烃盐,鏻盐,磷氮烯基鏻盐,吡啶鎓盐,磷氮烯基鏻盐,铵盐及其组合的至少一种相转移催化剂的催化剂比例。 当氯代苯酞以250ppm以上的量存在时,相转移催化剂的存在量足以制备氧联二邻苯二甲酸酐,并且基于碳酸酯的产率以氧化邻苯二甲酸酐的产率为至少70% 。

    Methods for the preparation poly(etherimide)s
    45.
    发明授权
    Methods for the preparation poly(etherimide)s 有权
    聚(醚酰亚胺)制备方法

    公开(公告)号:US06498224B1

    公开(公告)日:2002-12-24

    申请号:US09683257

    申请日:2001-12-05

    CPC classification number: C08G73/1053 C08G73/1007

    Abstract: A new method for the synthesis of poly(etherimide)s comprises transimidation of bis(imide) (IV) in the presence of a substituted phthalic anhydride or 4-substituted tetrahydrophthalic anhydride to yield dianhydride (V) which may then be reacted with a diamine to produce poly(etherimide)s. By-product substituted N-alkylphthalimide or 4-substituted N-alkyltetrahydrophthalic anhydride may be recycled or converted to 4-substituted N-alkylphthalimide for use in the formation bisimide (IV), obviating the need for a nitration step.

    Abstract translation: 用于合成聚(醚酰亚胺)的新方法包括在取代的邻苯二甲酸酐或4-取代的四氢邻苯二甲酸酐的存在下,双(酰亚胺)(Ⅳ)的转移,得到二酐(Ⅴ),然后可与二胺 以产生聚(醚酰亚胺)。 副产物取代的N-烷基邻苯二甲酰亚胺或4-取代的N-烷基四氢邻苯二甲酸酐可以循环使用或转化为4-取代的N-烷基邻苯二甲酰亚胺,用于形成双酰亚胺(IV),从而避免了硝化步骤的需要。

    Methods to grow, deliver, and plant young trees in a removable tubular container
    46.
    发明授权
    Methods to grow, deliver, and plant young trees in a removable tubular container 有权
    在可移除的管状容器中生长,输送和种植幼树的方法

    公开(公告)号:US09414547B2

    公开(公告)日:2016-08-16

    申请号:US13754847

    申请日:2013-01-30

    CPC classification number: A01G1/001 A01G9/026 A01G9/0299 A01G13/0243 A01G22/00

    Abstract: Methods to grow, provide and plant a young tree using a novel removable tubular container are disclosed. The container promotes the growth of a well formed protected root structure that minimizes transplant shock at the time the young tree is moved and permanently planted. The removable container and methods described provide for a fast growing inexpensive tree that is easily planted by a single person.

    Abstract translation: 公开了使用新型可移除管状容器生长,提供和种植幼树的方法。 该容器促进形成良好形成的保护根结构的生长,使幼树移动和永久种植时的移植冲击最小化。 所描述的可移动容器和方法提供了一种快速增长的便宜的树,其容易由单个人种植。

    Poly(aryl ether sulfone) composition, and method of making
    48.
    发明授权
    Poly(aryl ether sulfone) composition, and method of making 有权
    聚(芳基醚砜)组合物及其制备方法

    公开(公告)号:US09040651B2

    公开(公告)日:2015-05-26

    申请号:US13285043

    申请日:2011-10-31

    CPC classification number: C08G75/23 C08G65/00 C08G65/40 C08G65/4056

    Abstract: A poly(aryl ether sulfone) comprises units of formula (I): wherein Ar1 is a divalent C6-C15 aromatic group, Ar2 is a divalent C6-C15 aromatic group, Ar3 is a divalent C6-C15 aromatic group, and n is greater than 1; and a terminal group of formula (II) derived from a monofunctional phenoxide wherein is X is a hydrogen atom or an organic substituent having from 1 to 20 carbon atoms; wherein the poly(aryl ether sulfone) has a hydroxyl group content greater than 0 and less than 50 parts per million (ppm), based on the poly(aryl ether sulfone) weight, a glass transition temperature of 180 to 290° C., a weight average molecular weight of 20,000 to 100,000, a halogen content of greater than 0 and less than 3000 ppm based on the poly(aryl ether sulfone) weight. The poly(aryl ether sulfone) is free of methoxy groups.

    Abstract translation: 聚(芳基醚砜)包括式(I)的单元:其中Ar1是二价C 6 -C 15芳族基团,Ar 2是二价C 6 -C 15芳族基团,Ar 3是二价C 6 -C 15芳族基团,n大于 比1; 和衍生自单官能酚盐的式(II)的末端基团,其中X为氢原子或具有1至20个碳原子的有机取代基; 其中聚(芳基醚砜)的羟基含量大于0且小于50ppm(ppm),基于聚(芳基醚砜)重量,玻璃化转变温度为180-290℃, 重均分子量为20,000至100,000,卤素含量大于0且小于3000ppm,基于聚(芳基醚砜)重量。 聚(芳基醚砜)不含甲氧基。

    Methods to Grow, Deliver, and Plant Young Trees in a Removable Tubular Container
    49.
    发明申请
    Methods to Grow, Deliver, and Plant Young Trees in a Removable Tubular Container 审中-公开
    在可移动管状容器中种植,输送和种植幼树的方法

    公开(公告)号:US20140208645A1

    公开(公告)日:2014-07-31

    申请号:US13754847

    申请日:2013-01-30

    CPC classification number: A01G1/001 A01G9/026 A01G9/0299 A01G13/0243 A01G22/00

    Abstract: Methods to grow, provide and plant a young tree using a novel removable tubular container are disclosed. The container promotes the growth of a well formed protected root structure that minimizes transplant shock at the time the young tree is moved and permanently planted. The removable container and methods described provide for a fast growing inexpensive tree that is easily planted by a single person.

    Abstract translation: 公开了使用新型可移除管状容器生长,提供和种植幼树的方法。 该容器促进形成良好形成的保护根结构的生长,使幼树移动和永久种植时的移植冲击最小化。 所描述的可移动容器和方法提供了一种快速增长的便宜的树,其容易由单个人种植。

Patent Agency Ranking