Enzymatic synthesis of polyesters
    11.
    发明授权
    Enzymatic synthesis of polyesters 失效
    聚酯的酶合成

    公开(公告)号:US5962624A

    公开(公告)日:1999-10-05

    申请号:US38994

    申请日:1998-03-10

    CPC分类号: C12P7/62 C08G63/81 C08G63/87

    摘要: A linear polyester is made by a process reacting polyols comprising at least two primary alcohol groups and at least one secondary alcohol or amino group and a dicarboxylic acid or a dicarboxylic acid ester in the presence of an effective amount of a lipase derived from Candida cylindracea, Candida lipolytica, Candida rugosa, Candida antarctica, Candida utilis, Chromobacterium viscosum, Geotrichum viscosum, Geotrichum candidum, Mucor javanicus, Mucor miehei, Porcine pancreas, Pseudomonas species, specifically Pseudomonas fluorescens, Pseudomonas cepacia, Pseudomonas pseudoalkaligenes, Pseudomonas alkaligenes, Thermomyces species, Rhizopus arrhizus, Rhizopus delemar, Rhizopus niveus, Rhizopus oryzae, Rhizopus javanicus, Aspergillus niger, Penicillium roquefortii, Penicillium camembertii or an esterase derived from Bacillus species, specifically Bacillus thermoglucosidasius; Mucor miehei, Horse liver, Saccharomyces cerevisiae, Pigs liver or combinations thereof. The secondary OH or amino group of the polyol moiety is unreacted.

    摘要翻译: 线性聚酯通过在有效量的源自念珠菌(Candida cylindracea)的脂肪酶的存在下,使包含至少两个伯醇基团和至少一种仲醇或氨基的多元醇和二羧酸或二羧酸酯反应的方法制备, 假丝酵母,解脂假丝酵母(Candida rugosa),南极假丝酵母(Candida rugus),产油假丝酵母(Candida rugis),粘菌色杆菌(Candida utilis),粘虫(Geotrichum viscosum),白色念珠菌(Geotrichum candidum),爪哇木霉(Mucor javanicus),Mucor miehei,猪胰腺,假单胞菌属,荧光假单胞菌,洋葱假单胞菌,假产碱假单胞菌,嗜碱性杆菌 us草,根霉,根霉,米他氏根霉,爪哇根霉,黑曲霉,青霉青霉或衍生自芽孢杆菌属的酯酶,特别是芽孢杆菌热霉菌; Mucor miehei,马肝,酿酒酵母,猪肝或其组合。 多元醇部分的仲OH或氨基未反应。

    Process for the production of alkyl and/or alkenyl oligoglycosides
    12.
    发明授权
    Process for the production of alkyl and/or alkenyl oligoglycosides 失效
    制备烷基和/或烯基低聚糖苷的方法

    公开(公告)号:US5480979A

    公开(公告)日:1996-01-02

    申请号:US244053

    申请日:1994-05-13

    IPC分类号: C07H15/04 C07H1/00 C07H15/08

    CPC分类号: C07H15/04

    摘要: Alkyl and/or alkenyl oligoglycosides can be obtained in short reaction times and high yields by a process in which glycose is reacted with fatty alcohols at elevated temperature in the presence of sulfomonocarboxylic acids containing 2 to 8 carbon atoms, carboxylic anhydrides thereof and/or mixed cyclic sulfonic/carboxylic anhydrides thereof as acidic catalysts, the water of reaction is removed and the reaction products are worked up.

    摘要翻译: PCT No.PCT / EP92 / 02552 Sec。 371日期1994年5月13日 102(e)日期1994年5月13日PCT提交1992年11月6日PCT公布。 公开号WO93 / 10132 日期:1993年5月27日。烷基和/或烯基寡糖苷可以在短的反应时间和高产率下通过一种方法获得,其中糖在高温下在含有2-8个碳原子的磺基单羧酸的存在下与脂肪醇反应, 其酸酐和/或其作为酸性催化剂的混合的环状磺酸/羧酸酐,除去反应水并使反应产物被处理。

    Nitrogen-free corrosion inhibitors having a good buffering effect
    15.
    发明授权
    Nitrogen-free corrosion inhibitors having a good buffering effect 失效
    具有良好缓冲作用的无氮腐蚀抑制剂

    公开(公告)号:US5795372A

    公开(公告)日:1998-08-18

    申请号:US860109

    申请日:1997-06-16

    IPC分类号: C23F11/10 C23F11/12

    摘要: Nitrogen-free aqueous anticorrosion composition containing a) a carboxylic acid having 6 to 44 carbon atoms; and b) aromatic hydroxy compounds having a pK.sub.a value in the range of 7.0 to 11 for the hydroxy group, in a weight ratio of 1:2 to 20:1, in the form of a concentrate to be diluted with water by a factor of between 20 and 200 and in the form of a ready-to-use aqueous preparation that preferably contains 0.2 to 2 wt % component a) and 0.1 to 0.6 wt % component b) and has a pH value in the range of 7 to 11.

    摘要翻译: PCT No.PCT / EP95 / 04844 Sec。 371日期:1997年6月16日 102(e)日期1997年6月16日PCT提交1995年12月8日PCT公布。 公开号WO96 / 18757 日期1996年6月20日无氮水性防腐蚀组合物,其含有a)碳原子数为6〜44的羧酸; 和b)对于羟基,pKa值为7.0-11的芳族羟基化合物,其重量比为1:2至20:1,以用水稀释的浓缩物的形式为因子 优选含有0.2〜2重量%成分a)和0.1〜0.6重量%成分b)的现成的水性制剂,pH值在7〜11的范围内。

    Process for the production of alkyl glycosides
    16.
    发明授权
    Process for the production of alkyl glycosides 失效
    制备烷基糖苷的方法

    公开(公告)号:US5698684A

    公开(公告)日:1997-12-16

    申请号:US835447

    申请日:1992-02-24

    CPC分类号: C07H15/04

    摘要: In the acid-catalyzed production of alkyl glycosides, the molar quantity of catalyst used can be clearly reduced in all processes of industrial interest by using sulfosuccinic acid as catalyst as opposed to conventional catalysts, such as sulfuric acid or p-toluene sulfonic acid. The end reaction products are lighter in color and less clouded than alkyl glycosides obtained with conventional catalysts. Sulfosuccinic acid is readily biodegradable.

    摘要翻译: PCT No.PCT / EP90 / 01349 Sec。 一九九二年二月二十四日 102(e)日期1992年2月24日PCT提交1990年8月16日PCT公布。 出版物WO91 / 02742 1991年3月7日在烷基糖苷的酸催化生产中,通过使用磺基琥珀酸作为催化剂,与常规催化剂相比,所有催化剂的使用摩尔数都可以明显降低,如硫酸或对 - 甲苯磺酸。 最终反应产物的颜色较浅,并且比用常规催化剂获得的烷基糖苷少得多。 磺基琥珀酸容易生物降解。

    Mixture of alkyl glucosides and alcohols as foam inhibitors
    17.
    发明授权
    Mixture of alkyl glucosides and alcohols as foam inhibitors 失效
    烷基葡糖苷和醇作为泡沫抑制剂的混合物

    公开(公告)号:US5306442A

    公开(公告)日:1994-04-26

    申请号:US777224

    申请日:1992-01-03

    IPC分类号: B01D19/04 C11D3/00

    摘要: A mixture of C.sub.16 -C.sub.28 alkyl glucosides (A) and C.sub.16 -C.sub.28 fatty alcohols (B) in a weight ratio (A):(B) of between 20:1 and 1:9 possesses foam inhibiting properties even when highly diluted. The mixture is suitable for use in the food industry, and is preferably employed in a chemically inert liquid carrier oil that is immiscible with water.

    摘要翻译: PCT No.PCT / EP90 / 00680 Sec。 371日期:1992年1月3日 102(e)日期1992年1月3日PCT 1990年4月27日PCT PCT。 公开号WO90 / 13345 日期:1990年11月15日。重量比(A):(B)为20:1至1:9之间的C16-C28烷基葡糖苷(A)和C16-C28脂肪醇(B)的混合物具有抑泡作用 性能即使高度稀释。 该混合物适用于食品工业,优选用于与水不混溶的化学惰性液体载体油。