Purification of alkylene carbonates
    1.
    发明申请
    Purification of alkylene carbonates 有权
    碳酸亚烷基酯的纯化

    公开(公告)号:US20020082430A1

    公开(公告)日:2002-06-27

    申请号:US10083230

    申请日:2002-02-26

    CPC classification number: C07D317/38 C07D317/36

    Abstract: Provided herein is a process for producing alkylene carbonates of ultra-high purity. According to the present invention, certain stages of traditional distillation of alkylene carbonate distillation are replaced by carbon treatment. Alkylene carbonates produced according to the invention have a color of less than 25 (PtnullCo), and are suitable for uses requiring ultra-pure alkylene carbonates.

    Abstract translation: 本文提供了一种生产超高纯度碳酸亚烷基酯的方法。 根据本发明,碳酸亚烷基酯蒸馏的传统蒸馏的某些阶段被碳处理代替。 根据本发明生产的碳酸亚烷基酯具有小于25(Pt-Co)的颜色,并且适用于需要超纯碳酸亚烷基酯的用途。

    Methods for stabilizing aqueous alkylene carbonate solutions
    2.
    发明申请
    Methods for stabilizing aqueous alkylene carbonate solutions 审中-公开
    稳定碳酸亚烷基酯水溶液的方法

    公开(公告)号:US20030060383A1

    公开(公告)日:2003-03-27

    申请号:US10243717

    申请日:2002-09-13

    CPC classification number: C11D7/267 C11D7/08 C11D7/265 C11D7/266 C11D7/5022

    Abstract: Provided herein are compositions containing aqueous solutions of alkylene carbonates which have been stabilized by the presence of an effective hydrolysis-inhibiting amount of an added chemical substance. By the present invention, aqueous solutions of alkylene carbonates previously unsuitable for long-term transportation and storage are rendered stable.

    Abstract translation: 本文提供了含有通过存在有效的水解抑制量的添加的化学物质来稳定的碳酸亚烷基酯水溶液的组合物。 通过本发明,以前不适于长期运输和储存的碳酸亚烷基酯水溶液变得稳定。

    Alternative photoresist stripping solutions
    3.
    发明申请
    Alternative photoresist stripping solutions 失效
    替代光刻胶剥离溶液

    公开(公告)号:US20020155393A1

    公开(公告)日:2002-10-24

    申请号:US10164793

    申请日:2002-06-06

    CPC classification number: G03F7/423 G03F7/422

    Abstract: The present invention is directed toward effective photoresist stripping compositions that are less corrosive and do not cause skin irritation. One form of the present invention is a composition useful as a photoresist remover that includes an alkylene carbonate, and one or more additional components chosen from the group that includes alkyl hydrogen peroxides, hydroxyalkyl ureas, urea-hydrogen peroxides, N-substituted morpholines and alcohols. Another form of the present invention is a composition for removing photoresist from a surface that includes an N-substituted morpholine.

    Abstract translation: 本发明涉及腐蚀性较小且不引起皮肤刺激的有效的光致抗蚀剂剥离组合物。 本发明的一种形式是可用作光致抗蚀剂去除剂的组合物,其包括碳酸亚烷基酯,以及选自包括烷基过氧化氢,羟基烷基脲,脲 - 过氧化氢,N-取代的吗啉和醇的一种或多种另外的组分 。 本发明的另一种形式是从包含N-取代的吗啉的表面除去光致抗蚀剂的组合物。

    Degreasing compositions
    4.
    发明申请
    Degreasing compositions 失效
    脱脂成分

    公开(公告)号:US20020111284A1

    公开(公告)日:2002-08-15

    申请号:US10061536

    申请日:2002-02-01

    Abstract: A composition useful as a paint remover which may include a carbonate, a dibasic ester and a mono-ester. The paint stripping composition may also contain an organic sulfur-containing compound such as dimethyl sulfoxide (DMSO), a glycol ether, a ketone, or combination thereof. The composition may be used in a process for removing paint by applying it to a painted surface. A degreasing composition is also disclosed which may comprise a carbonate and a alkyl-substituted cyclo-alkane such as naphthene. The compositions have several important attributes, including low toxicity and high efficacy in removing paint and coatings.

    Abstract translation: 可用作除漆剂的组合物,其可以包括碳酸酯,二元酯和单酯。 涂料剥离组合物还可以含有有机含硫化合物如二甲基亚砜(DMSO),二醇醚,酮或其组合。 该组合物可以用于通过将其施涂到涂漆表面上去除涂料的方法中。 还公开了可以包含碳酸酯和烷基取代的环烷烃如环烷烃的脱脂组合物。 该组合物具有几个重要的特性,包括低毒性和高效去除油漆和涂料。

    Absorbent polymeer modification
    5.
    发明申请
    Absorbent polymeer modification 有权
    吸收聚合物改性

    公开(公告)号:US20020151432A1

    公开(公告)日:2002-10-17

    申请号:US09950147

    申请日:2001-09-10

    CPC classification number: C08F8/14 C08F2810/20

    Abstract: Provided herein are cross-linked super absorbing polymers made by reacting a copolymer having an esterifiable acid group with a cyclic alkylene carbonate. The resulting cross-linked materials have an increased ability to retain absorbed liquids even under the influence of applied stress. Catalysts are also disclosed which are useful in promoting the reaction between the alkylene carbonate and copolymer.

    Abstract translation: 本文提供了通过使具有可酯化酸基的共聚物与环状碳酸亚烷基酯反应制备的交联超吸收聚合物。 所产生的交联材料即使在施加的应力的影响下也具有增加保留吸收液体的能力。 还公开了可用于促进碳酸亚烷基酯和共聚物之间的反应的催化剂。

    Advances in towelettes
    7.
    发明申请
    Advances in towelettes 失效
    毛巾进度

    公开(公告)号:US20020192267A1

    公开(公告)日:2002-12-19

    申请号:US09842451

    申请日:2001-04-26

    Abstract: Provided herein are moist towelettes useful for cleansing, among other things, hard surfaces and human skin. The moist towelettes of the invention comprise a towelette portion which is moistened with a liquid composition of matter wherein the liquid composition includes an alkylene carbonate as one of its components. According to one preferred form of the invention, the liquid composition from which the towelettes are made moist are alcohol-free. In another embodiment, a substantial portion of the alcohol in a given formulation is replaced with an alkylene carbonate component. Preferred alkylene carbonate components include propylene carbonate, butylene carbonate, and glycerine carbonate.

    Abstract translation: 本文提供了用于清洁(尤其是)硬表面和人体皮肤的湿润湿巾。 本发明的湿润毛巾包括用液体组合物润湿的毛巾部分,其中液体组合物包含碳酸亚烷基酯作为其组分之一。 根据本发明的一个优选形式,将湿巾制成湿巾的液体组合物不含醇。 在另一个实施方案中,给定制剂中的大部分醇被碳酸亚烃酯组分代替。 优选的碳酸亚烃酯组分包括碳酸亚丙酯,碳酸亚丁酯和碳酸甘油酯。

    Polymerization-inhibited distillation
    8.
    发明申请
    Polymerization-inhibited distillation 失效
    聚合抑制蒸馏

    公开(公告)号:US20020179426A1

    公开(公告)日:2002-12-05

    申请号:US10127286

    申请日:2002-04-22

    CPC classification number: C07D317/36 B01D3/34 C07D317/38 Y10S203/11

    Abstract: Identified herein are inhibitors which may be added to the boiling pot portion of a distillation apparatus prior to or during the distillation of an alkylene carbonate. The inhibitors retard the occurrence of undesirable reactions of the alkylene carbonate with itself and impurities present in the pot, and hence greatly reduce or minimize the formation of undesirable by-products which otherwise tend to reduce overall yields of alkylene carbonate recovered by the distillation process. Higher distillation temperatures at higher pressures over the prior art are possible without attendant losses of significant amounts of recovered alkylene carbonate, which confers heretofore unseen flexibility in alkylene carbonate distillation.

    Abstract translation: 本文所述的是在碳酸亚烷基酯蒸馏之前或期间可以加入到蒸馏装置的沸腾锅部分的抑制剂。 抑制剂阻碍碳酸亚烃酯本身和存在于罐中的杂质的不期望的反应的发生,因此大大减少或最小化不期望的副产物的形成,否则倾向于降低由蒸馏过程回收的碳酸亚烃酯的总产率。 与现有技术相比,在较高压力下的较高蒸馏温度是可能的,而不需要大量回收的碳酸亚烃酯的损失,这在碳酸亚烷基酯蒸馏中赋予迄今未见的灵活性。

    PROCESS FOR THE PURIFICATION OF ALKYLENE CARBONATE
    9.
    发明申请
    PROCESS FOR THE PURIFICATION OF ALKYLENE CARBONATE 有权
    亚烷基碳酸盐的纯化方法

    公开(公告)号:US20020147349A1

    公开(公告)日:2002-10-10

    申请号:US10071169

    申请日:2002-03-29

    CPC classification number: C07D317/38 C07D317/36

    Abstract: This invention concerns a process to provide high purity alkylene carbonate though use of multiple distillations wherein the unused fractions are recycled to the reactor. The high purity alkylene carbonate may be further purified by use of carbon to produce electrochromic or photochromic grade alkylene carbonate by reducing its UV absorbance.

    Abstract translation: 本发明涉及通过使用多个蒸馏提供高纯度碳酸亚烷基酯的方法,其中将未使用的馏分再循环到反应器中。 可以通过使用碳来进一步纯化高纯度碳酸亚烃,以通过降低其UV吸光度来产生电致变色或光致变色级碳酸亚烃酯。

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