Process for preparing dibenzylidene sorbitols and dibenzylidene xylitols
    1.
    发明授权
    Process for preparing dibenzylidene sorbitols and dibenzylidene xylitols 失效
    制备二亚苄基山梨糖醇和二亚苄基二甲基二醇的方法

    公开(公告)号:US4429140A

    公开(公告)日:1984-01-31

    申请号:US336376

    申请日:1981-12-29

    IPC分类号: C07D493/04 C07D407/00

    CPC分类号: C07D493/04

    摘要: A process for preparing dibenzylidene sorbitols or dibenzylidene xylitols by reacting sorbitol or xylitol with a substituted or unsubstituted benzaldehyde or alkyl acetal derivative thereof in the presence of an acid catalyst, a hydrophobic organic solvent and a water-soluble organic polar solvent, the process being characterized by using the hydrophobic organic solvent in an amount sufficient to permit the resulting dibenzylidene sorbitols or dibenzylidene xylitols to separate out as crystals and capable of maintaining the reaction system in the form of a gel to solid phase and by conducting the reaction with forced agitation.

    摘要翻译: PCT No.PCT / JP81 / 00105 Sec。 371日期:1981年12月29日 102(e)1981年12月29日PCT PCT。 公开号WO81 / 03331 日本1981年11月26日。一种通过山梨糖醇或木糖醇与取代或未取代的苯甲醛或其烷基乙缩醛衍生物在酸催化剂,疏水性有机溶剂和水溶性有机物的存在下反应制备二亚苄基山梨醇或二亚苄基二甲基二醇的方法 极性溶剂,该方法的特征在于使用足够的量的疏水性有机溶剂,使得所得到的二亚苄基山梨糖醇或二亚苄基二甲基硅烷作为晶体分离出来,并且能够将反应体系保持为凝胶形式至固相,并通过导电 反应强烈搅动。

    Process for preparing polycarboxylic acid
    3.
    发明授权
    Process for preparing polycarboxylic acid 失效
    制备多元羧酸的方法

    公开(公告)号:US4833272A

    公开(公告)日:1989-05-23

    申请号:US849105

    申请日:1986-04-07

    IPC分类号: C07C51/285 C07C51/31

    CPC分类号: C07C51/285 C07C51/31

    摘要: Disclosed is a process for preparing a polycarboxylic acid, the process comprising subjecting a Diels-Alder reaction product of maleic anhydride and a diene and/or the corresponding acid to oxidative cleavage using hydrogen peroxide in the presence of at least one catalyst selected from the group consisting of tungstic acid, molybdic acid and heteropoly acids thereof.

    摘要翻译: 公开了一种制备多元羧酸的方法,该方法包括使用过氧化氢使马来酸酐和二烯和/或相应的酸的Diels-Alder反应产物在至少一种选自以下的催化剂存在下进行氧化裂解: 由钨酸,钼酸及其杂多酸组成。

    Formaldehyde-untreated cellulose fiber articles and process for
producing same
    4.
    发明授权
    Formaldehyde-untreated cellulose fiber articles and process for producing same 失效
    甲醛未处理的纤维素纤维制品及其生产方法

    公开(公告)号:US5536276A

    公开(公告)日:1996-07-16

    申请号:US457578

    申请日:1995-06-01

    CPC分类号: D06M13/192

    摘要: In treating a cellulose fiber article with 1,2,3,4-butanetetracarboxylic acid to improve properties, 1,2,3,4-butanetetracarboxylic acid containing up to 200 ppm of nitro radical is used, whereby the cellulose fiber article can be prevented from coloring to the utmost extent. The intended results of the invention can be achieved to a remarkable extent when using 1,2,3,4-butanetetracarboxylic acid containing up to 200 ppm of nitro radical and prepared by oxidizing tetrahydrophthalc acid and/or tetrahydrophthalic anhydride with hydrogen peroxide.

    摘要翻译: 在用1,2,3,4-丁烷四羧酸处理纤维素纤维制品以提高性能时,可以使用含有高达200ppm硝基的1,2,3,4-丁烷四羧酸,从而可以防止纤维素纤维制品 从着色到最大程度。 当使用含有高达200ppm的硝基并通过用过氧化氢氧化四氢邻苯二甲酸和/或四氢邻苯二甲酸酐制备的1,2,3,4-丁烷四羧酸时,本发明的预期结果可以达到显着的程度。

    Thermoplastic resin composition and a method of molding the same
    5.
    发明授权
    Thermoplastic resin composition and a method of molding the same 失效
    热塑性树脂组合物及其成型方法

    公开(公告)号:US5504128A

    公开(公告)日:1996-04-02

    申请号:US387806

    申请日:1995-02-21

    摘要: This invention provides a thermoplastic resin composition comprising a thermoplastic resin and 0.1 to 100 parts by weight, per 100 parts by weight of the thermoplastic resin, of an imide compound prepared, e.g., by dehydration condensation of 1,2,3,4-butanetetracarboxylic acid or a monoanhydride or a dianhydride thereof with a primary amine, and a method of molding the resin composition.

    摘要翻译: PCT No.PCT / JP94 / 01035 Sec。 371日期1995年2月21日 102(e)1995年2月21日PCT PCT 1994年6月28日PCT公布。 公开号WO95 / 01393 日本1995年1月12日。本发明提供一种热塑性树脂组合物,其包含热塑性树脂,每100重量份热塑性树脂为0.1至100重量份的制备的酰亚胺化合物,例如通过脱水缩合1, 2,3,4-丁烷四羧酸或其单胺或其二酐与伯胺的混合物,以及树脂组合物的成型方法。

    Process for preparing carboxylic acid
    6.
    发明授权
    Process for preparing carboxylic acid 失效
    羧酸的制备方法

    公开(公告)号:US4606863A

    公开(公告)日:1986-08-19

    申请号:US616049

    申请日:1984-06-01

    CPC分类号: C07C51/235 C07C51/285

    摘要: This invention provides a process for preparing carboxylic acid, the process comprising subjecting an oxidation product produced by reacting a peroxide with (a) unsaturated aliphatic monocarboxylic acid having at least one unsaturated bond in the carbon chain and containing 6 to 24 carbon atoms or its ester or (b) cyclic and/or acyclic aliphatic olefin having at least one unsaturated bond in the carbon chain to oxidation by oxygen or oxygen-containing gas in the presence of a catalyst comprising (i) at least one heavy metal compound and (ii) at least one member selected from the group consisting of a bromine compound and a chlorine compound.

    摘要翻译: 本发明提供一种制备羧酸的方法,该方法包括使过氧化物与(a)在碳链中具有至少一个不饱和键的不饱和脂族单羧酸反应并含有6至24个碳原子或其酯 或(b)在包含(i)至少一种重金属化合物和(ii)至少一种重金属化合物的催化剂存在下,在碳链中具有至少一个不饱和键的环状和/或非环状脂族烯烃被氧或含氧气体氧化, 选自溴化合物和氯化合物中的至少一种。

    Process for producing an alicyclic unsaturated alcohol
    7.
    发明授权
    Process for producing an alicyclic unsaturated alcohol 失效
    脂环族不饱和醇的制造方法

    公开(公告)号:US06482995B1

    公开(公告)日:2002-11-19

    申请号:US10160356

    申请日:2002-05-30

    IPC分类号: C07C3518

    CPC分类号: C07C29/141 C07C33/22

    摘要: An alicyclic unsaturated alcohol (for example, tetrahydrobenzyl alcohol) having the purity of 99% by weight or more, the water content of 0.1% by weight or less and the acid value of 0.1 mg KOH/g or less can be produced, with high selectivity, by hydrogenating using an unsaturated cyclic aldehyde having the acid value of 10 mg KOH/g or less as a raw material; terminating the hydrogenation in the conversion of 70 to 99.8%; and rectifying the reaction product containing the unreacted unsaturated cyclic aldehyde. The high purity alicyclic unsaturated alcohol is useful as raw material chemicals for synthesizing drugs, agricultural chemicals, perfumes, and dyes etc.

    摘要翻译: 可以制造纯度为99重量%以上,水分为0.1重量%以下,酸值为0.1mgKOH / g以下的脂环族不饱和醇(例如四氢苄醇),高 选择性,通过使用酸值为10mg KOH / g以下的不饱和环醛作为原料进行氢化; 终止氢化转化率为70〜99.8%; 并对含有未反应的不饱和环醛的反应产物进行精馏。 高纯度脂环族不饱和醇可用作合成药物,农药,香水和染料等的原料化学品。