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11 条记录 (耗时 0.023 秒)

    Process for improving biodegradability of PVC
    1.
    发明授权
    Process for improving biodegradability of PVC 失效
    提高PVC生物降解性的工艺

    公开(公告)号：US5324817A

    公开(公告)日：1994-06-28

    申请号：US63396

    申请日：1993-05-18

    申请人： Ramzi Y. Saleh ,  Michael Siskin ,  George A. Knudsen

    发明人： Ramzi Y. Saleh ,  Michael Siskin ,  George A. Knudsen

    IPC分类号： C08F8/26 ,  C08F6/26

    CPC分类号： C08F8/26

    摘要： The present invention relates to a process for dehydrochlorinating polyvinylchloride polymers to remove about 30 wt % chlorine therefrom by heating the starting materials PVC and deoxygenated liquid water, preferably neutral liquid water at temperatures from about 200.degree. C. up to the critical temperature of water at autogenous pressure to maintain the water as a liquid phase. The process has utility in recycling by enabling PVC to be dechlorinated specifically by a means that does not release chlorine gas.

    摘要翻译： 本发明涉及通过将起始材料PVC和脱氧液体水（优选中性液体水）在约200℃至约临界温度的温度下加热来除去约30重量％氯的氯乙烯聚合物脱氯化氢的方法 自发压力保持水为液相。 该方法可以通过使PVC不特别地通过不释放氯气的方式脱氯来实现再循环。

    Process for depolymerization of polyacrylonitrile using hot water
    2.
    发明授权
    Process for depolymerization of polyacrylonitrile using hot water 失效
    使用热水解聚聚丙烯腈的方法

    公开(公告)号：US5312898A

    公开(公告)日：1994-05-17

    申请号：US812250

    申请日：1991-12-20

    申请人： Michael Siskin ,  Ramzi Y. Saleh ,  George A. Knudsen

    发明人： Michael Siskin ,  Ramzi Y. Saleh ,  George A. Knudsen

    IPC分类号： C08F8/12 ,  C08F8/50 ,  C08F6/00

    CPC分类号： C08F8/50

    摘要： The present invention relates to a process for depolymerizing polyacrylonitrile into water soluble by-products, including ammonia and lower molecular weight carbonaceous materials by contacting the starting materials, polyacrylonitrile, and neutral, hot liquid water at a temperature from about 200.degree. C. up to the critical temperature of water at autogenous pressure. The present invention has utility as a means for degrading polyacrylonitrile without producing toxic hydrogen cyanide as a by-product.

    摘要翻译： 本发明涉及通过使原料，聚丙烯腈和中性热液体水在约200℃至约200℃的温度下接触将聚丙烯腈解聚为水溶性副产物，包括氨和低分子量碳质材料的方法， 自生压力下水的临界温度。 本发明作为用于降解聚丙烯腈而不产生有毒的氰化氢作为副产物的方法是有用的。

    Trialkyl acetic acid (neo acid) esters and esterification process
    3.
    发明授权
    Trialkyl acetic acid (neo acid) esters and esterification process 失效
    三烷基乙酸（新酸）酯和酯化方法

    公开(公告)号：US06881859B2

    公开(公告)日：2005-04-19

    申请号：US10215104

    申请日：2002-08-08

    申请人： Edmund John Mozeleski ,  Richard Henry Schlosberg ,  George A. Knudsen

    发明人： Edmund John Mozeleski ,  Richard Henry Schlosberg ,  George A. Knudsen

    IPC分类号： C07C67/08 ,  C07C67/62 ,  C07C67/02 ,  C07C67/00

    CPC分类号： C07C67/08 ,  C07C67/62 ,  C07C69/24

    摘要： Disclosed is a method of making trialkyl acetic acid (“neo acid”) esters and a neo acid ester composition. Neo acid esters are made by contacting a neo acid stream, comprising a mixture of neo acids, with alcohol in the presence of a catalyst. The invention has the benefit of providing a desired neo acid ester composition, while eliminating, or at least limiting, the need for separation and/or purification of the reactants prior to the synthesis of the desired neo acid esters.

    摘要翻译： 公开了制备三烷基乙酸（“新酸”）酯和新酸酯组合物的方法。 新酸酯通过在催化剂存在下使包含新酸的混合物的新酸流与醇接触来制备。 本发明具有提供所需新酸酯组合物的优点，同时消除或至少限制了在合成所需新酸酯之前分离和/或纯化反应物的需要。

    Phenol terminated diester compositions derived from discarboxylic acids, polyester polymers or alkyd polymers, and curable compositions containing same
    5.
    发明授权
    Phenol terminated diester compositions derived from discarboxylic acids, polyester polymers or alkyd polymers, and curable compositions containing same 失效
    由酚羧酸，聚酯聚合物或醇酸聚合物衍生的苯酚封端的二酯组合物和含有它们的可固化组合物

    公开(公告)号：US5326831A

    公开(公告)日：1994-07-05

    申请号：US6229

    申请日：1993-01-19

    申请人： Albert I. Yezrielev ,  William E. Wellman ,  Ralph M. Kowalik ,  George A. Knudsen ,  Michael G. Romanelli

    发明人： Albert I. Yezrielev ,  William E. Wellman ,  Ralph M. Kowalik ,  George A. Knudsen ,  Michael G. Romanelli

    IPC分类号： C08G63/02 ,  C07C69/017 ,  C08G63/06 ,  C08G63/123 ,  C08G63/16 ,  C08G63/19 ,  C08G63/688 ,  C08K5/13 ,  C08K5/17 ,  C08L67/00 ,  C08L67/02 ,  C09D167/00 ,  C09D167/02 ,  C08G63/12 ,  C08G63/133

    CPC分类号： C08L67/02 ,  C07C69/017 ,  C08G63/16 ,  C08G63/19 ,  C09D167/02

    摘要： The present invention is directed towards a process for preparing non-liquid crystalline phenol-terminated diester compositions characterized by the structure of formula 1: ##STR1## wherein R is an aliphatic divalent hydrocarbon radical containing 2 to 40 carbon atoms or a mixture of such radicals, provided however that R contains at least about 8 carbon atoms when n is 0 and p is 0, R.sub.1 is an aliphatic or cycloaliphatic hydrocarbon radical containing 2 to 40 carbon atoms or a mixture of such radicals, R.sub.2 is an aliphatic, aromatic or a mixture of aliphatic and aromatic hydrocarbon radicals having from 2 to 40 carbon atoms, A is divalent aromatic radical selected from the group consisting of phenylene, naphthylene or his phenylene, p is 0 or 1, n is 0 or an integer ranging from 1 to about 40, provided however, that p is 0 when n is 0 and p is 1 when n is an integer.The invention is also directed to a single stage direct esterification or multi stage esterification processes for producing the aforementioned diesters of formula 1 either with or without the use of esterification catalysts, and is particularly directed to such processes for preparing diesters of reduced color using a low temperature process in combination with catalyst systems containing a phosphorous acid or derivative thereof.

    摘要翻译： 本发明涉及一种制备非液晶苯酚封端的二酯组合物的方法，其特征在于式1的结构：其中R是含有2至40个碳原子的脂族二价烃基或 但是，当n为0且p为0时，R包含至少约8个碳原子，R 1为含有2至40个碳原子的脂族或脂环族烃基或这些基团的混合物，R 2为 脂族，芳族或具有2至40个碳原子的脂族和芳族烃基的混合物，A是选自亚苯基，亚萘基或其亚苯基的二价芳族基团，p为0或1，n为0或整数 但是，如果n是0，p是0，当n是整数时，p是1。 本发明还涉及使用或不使用酯化催化剂制备上述式1的二酯的单阶段直接酯化或多阶段酯化方法，特别涉及这样的使用低 与含有亚磷酸或其衍生物的催化剂体系结合使用。

    Electrolytic process for treating sulfuric acid streams
    7.
    发明授权
    Electrolytic process for treating sulfuric acid streams 失效
    用于处理硫酸流的电解过程

    公开(公告)号：US4406760A

    公开(公告)日：1983-09-27

    申请号：US325002

    申请日：1981-11-25

    申请人： George A. Knudsen ,  Charles Savini

    发明人： George A. Knudsen ,  Charles Savini

    IPC分类号： C25B3/02 ,  C01B17/90 ,  C07C27/00 ,  C07C29/06 ,  C07C31/02 ,  C07C67/00

    CPC分类号： C01B17/90

    摘要： An improved process is provided for treating spent sulfuric acid streams formed in the catalytic hydration of olefins to prepare alcohols, wherein the spent acid stream containing organo-sulfonic acid impurities is treated in an electrolysis zone under conditions sufficient to electrolytically oxidize at least a portion of said organo-sulfonic acid impurities to form partially oxidized organic compounds therefrom and thereby provide a treated sulfuric acid stream of increased thermal stability. The improved process permits continuous operation at levels of total organic carbon in the treated acid which would otherwise be unacceptable and minimizes the substantial operating problems associated with formation of heavy carbon deposits in the process equipment.

    摘要翻译： 提供了一种改进的方法，用于处理在烯烃的催化水合中形成的废硫酸流以制备醇，其中含有机磺酸杂质的废酸流在电解区中在足以电解氧化至少一部分 所述有机磺酸杂质从其形成部分氧化的有机化合物，从而提供具有增加的热稳定性的经处理的硫酸流。 改进的方法允许在经处理的酸中的总有机碳的水平下连续操作，否则将是不可接受的，并且使与工艺设备中的重碳沉积物形成相关的实质操作问题最小化。

    Process for the preparation of dialkyltin dialkoxide
    8.
    发明授权
    Process for the preparation of dialkyltin dialkoxide 失效
    制备二烷基锡二醇盐的方法

    公开(公告)号：US5545600A

    公开(公告)日：1996-08-13

    申请号：US361269

    申请日：1994-12-21

    申请人： George A. Knudsen ,  Elena N. Suciu ,  Robert C. Michaelson

    发明人： George A. Knudsen ,  Elena N. Suciu ,  Robert C. Michaelson

    IPC分类号： B01J31/12 ,  B01J31/40 ,  B01J31/22

    CPC分类号： B01J31/4015 ,  B01J31/0212 ,  B01J31/122 ,  B01J2231/40

    摘要： A process for making a catalyst product which comprises reacting dialkyltin oxide with an alcohol and the corresponding dialkyl carbonate at a temperature in the range between about 50.degree. to 200.degree. C. and at a pressure in the range between about 75 to 600 psi (0.52 to 4.14 MPa), wherein the catalyst product comprises dialkyltin dialkoxide in the range between about 90 to 100 mole % based on the tin species of the catalyst product. This process also forms effective catalyst product when the methanol is replaced with either a primary or secondary alcohol.

    摘要翻译： 一种制备催化剂产物的方法，其包括使二氧化锡氧化物与醇和相应的碳酸二烷基酯在约50至200℃的温度和约75至600psi（0.52）之间的压力下反应 至4.14MPa），其中催化剂产物包含基于催化剂产物的锡种类的约90至100摩尔％的二烷基锡二烷氧基化物。 当用伯醇或仲醇代替甲醇时，该方法也形成有效的催化剂产物。