Preparation of polyurethane foams
    1.
    发明授权
    Preparation of polyurethane foams 失效
    制备聚氨酯泡沫

    公开(公告)号:US06191179B1

    公开(公告)日:2001-02-20

    申请号:US09271233

    申请日:1999-03-17

    IPC分类号: C08G1820

    摘要: A process for the preparation of foamed plastics materials based on polyisocyanate polyaddition products by the reaction of isocyanates with isocyanate-reactive compounds in the presence of catalysts and, optionally, auxiliaries and/or additives, wherein i) isocyanates having isocyanurate and/or biuret structures are used, the isocyanate-reactive compounds used are ii) at least one diol and/or polyol having a molecular weight of from 400 to 8000 and containing at least 50% of primary hydroxyl groups based on all of the hydroxyl groups present in the compound, iii) at least one compound having at least one primary amine group, and diols and/or triols having molecular weights of less than 400 are optionally used as chain-extending and/or crosslinking agents, the reaction being carried out in the presence of iv) at least one tertiary amine acting as catalyst and/or v) at least one metal salt acting as catalyst and vi) water.

    摘要翻译: 在催化剂和任选的助剂和/或添加剂的存在下通过异氰酸酯与异氰酸酯反应性化合物的反应制备基于多异氰酸酯加聚产物的泡沫塑料材料的方法,其中具有异氰脲酸酯和/或缩二脲结构的异氰酸酯是 使用的异氰酸酯反应性化合物是ii)分子量为400-8000的至少一种二醇和/或多元醇,并且含有至少50%的基于化合物中存在的所有羟基的伯羟基,iii )至少一种具有至少一个伯胺基的化合物和分子量小于400的二醇和/或三醇任选用作延伸链和/或交联剂,该反应在 作为催化剂的至少一种叔胺和/或v)至少一种作为催化剂的金属盐,和vi)水。

    Production of flexible polyurethane foams
    5.
    发明授权
    Production of flexible polyurethane foams 失效
    生产柔性聚氨酯泡沫

    公开(公告)号:US06770684B2

    公开(公告)日:2004-08-03

    申请号:US10095734

    申请日:2002-03-12

    IPC分类号: C08G1828

    摘要: The present invention relates to a process for the production of flexible polyurethane foams by reaction of a) at least one compound having at least two isocyanate-reactive hydrogen atoms, with b) polyisocyanates, wherein the compund used as said compound having at least two isocyanate-reactive hydrogen atoms a) comprises at least one block polyoxypropylene/polyoxyethylene/polyol having a hydroxyl value of from 25 to 45 mg KOH/g and a content of terminally bound ethylene oxide units of from 15 to 17 wt %, based on the total amount of the alkylene oxide, obtained by attachment of ethylene oxide and propylene oxide to an initiator having an average functionality of 3.

    摘要翻译: 本发明涉及通过以下方法生产柔性聚氨酯泡沫的方法:a)至少一种具有至少两个异氰酸酯反应性氢原子的化合物与b)多异氰酸酯反应,其中所述化合物用作具有至少两个异氰酸酯反应性 氢原子a)包含至少一种羟基值为25至45mg KOH / g的嵌段聚氧丙烯/聚氧乙烯/多元醇,并且末端结合的环氧乙烷单元的含量为15至17重量%,基于 通过将环氧乙烷和环氧丙烷连接到平均官能度为3的引发剂获得的环氧烷烃。

    Process for the production of a silver halide emulsion
    6.
    发明授权
    Process for the production of a silver halide emulsion 失效
    制备卤化银乳剂的方法

    公开(公告)号:US5472838A

    公开(公告)日:1995-12-05

    申请号:US272669

    申请日:1994-07-11

    IPC分类号: G03C7/392 G03C7/396 G03C1/005

    CPC分类号: G03C7/396 G03C7/39236

    摘要: Silver halide emulsions with tabular grains showing increased aspect ratio are produced by adding to the precipitiation vessel a compound of the formula I: ##STR1## in which R.sub.1 means H or optionally substituted alkyl, aralkyl or cycloalkylR.sub.2 means H or optionally substituted alkyl, aryl or aralkyl or a polymer chainR.sub.3 means H, OH, alkyl, aryl, aralkyl, halogen, NHR.sub.4, O--CO--R.sub.4, O--CO--NHR.sub.4 or an optionally substituted oxazoline ringR.sub.4 means optionally substituted or alkyl, aralkyl or arylm means 2 or 3,n means 2 to 10,000,or a compound of the formula II ##STR2## in which R.sub.1, R.sub.3, n and m have the meaning stated above and may be identical or different andR.sub.5 means optionally substituted alkene, arylene, aralkene or a polyaddition, polycondensation or polymerisation chain.

    摘要翻译: 通过向沉淀容器中加入式I化合物(其中R 1表示H或任选取代的烷基,芳烷基或环烷基R 2表示H或任选取代的),产生具有增加的纵横比的片状颗粒的卤化银乳剂 烷基,芳基或芳烷基或聚合物链R3表示H,OH,烷基,芳基,芳烷基,卤素,NHR4,O-CO-R4,O-CO-NHR4或任选取代的恶唑啉环R4表示任选取代的或烷基, 或芳基m表示2或3,n表示2至10,000,或式II(II)化合物,其中R 1,R 3,n和m具有上述含义并且可以相同或不同,R 5表示 任选取代的烯烃,亚芳基,芳烯或加聚,缩聚或聚合链。

    New herbicidal fluorobenzothiazolyloxyacetamides
    8.
    发明授权
    New herbicidal fluorobenzothiazolyloxyacetamides 失效
    新除草氟代苯并噻唑氧基乙酰胺

    公开(公告)号:US5356864A

    公开(公告)日:1994-10-18

    申请号:US119462

    申请日:1993-09-09

    摘要: Novel herbicidal fluorobenzothiazolyloxyacetamides of the formula ##STR1## in which R.sup.1 represents hydrogen or an optionally substituted radical from the group consisting of alkyl, alkenyl, alkinyl and aralkyl,R.sup.2 represents an optionally substituted radical from the group consisting of alkyl, alkenyl, alkinyl, cycloalkyl, cycloalkenyl, aralkyl, aryl, alkoxy, alkenyloxy or alkinyloxy, orR.sup.1 and R.sup.2, together with the nitrogen atom to which they are bonded, form an optionally substituted, saturated or unsaturated nitrogen heterocycle which can contain further heteroatoms and to which a benzo group can be fused.

    摘要翻译: 式(I)的新型除草氟代苯并噻唑氧基乙酰胺,其中R 1表示氢或任选取代的由烷基,烯基,炔基和芳烷基组成的组中的基团,R 2表示任选取代的由烷基,烯基, 炔基,环烷基,环烯基,芳烷基,芳基,烷氧基,烯氧基或烷氧基,或R 1和R 2与它们所键合的氮原子一起形成任选取代的饱和或不饱和的氮杂环,其可含有其它杂原子, 苯并基团可以融合。