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1.发明授权公开(公告)号：US06364925B1
公开(公告)日：2002-04-02
申请号：US09458818
申请日：1999-12-10
IPC分类号： C05G500
CPC分类号： C09D175/04 , C08G18/4891 , C08G18/6696
摘要： The present invention relates to polyurethane encapsulated fertilizer particles which exhibit slow-release properties and to a process for their production. The process comprises applying an isocyanate-reactive component to fertilizer particles, to form fertilizer particles coated with an isocyanate-reactive component, applying a polyisocyanate component onto the coated fertilizer particles to form polyurethane encapsulated fertilizer particles, and, optionally, repeating these steps as many times as necessary to form the polyurethane encapsulated fertilizer particles that contain about 2 to 20% by weight of polyurethane, based on the total weight of the encapsulated fertilizer particles. Suitable isocyanate-reactive components include polyesterether polyols that comprise either a blend of or the reaction product of (i) castor oil having an OH number of about 160 to about 170, a viscosity of about 500 to about 900 mPa.s at 25° C., and a water content of less than 0.5% by weight; and (ii) a polyether polyol having an OH number of from 28 to 700, a functionality of from 3 to 8, and a molecular weight of about 240 to about 6,000, and a viscosity of from about 50 to 35,000 mPa.s at 25° C. The polyether polyol must be prepared from a suitable initiator compound and an alkylene oxide comprising at least 70% by weight of propylene oxide.
摘要翻译： 本发明涉及具有缓释特性的聚氨酯包封肥料颗粒及其生产方法。 该方法包括将异氰酸酯反应性组分施用于肥料颗粒，以形成涂覆有异氰酸酯反应性组分的肥料颗粒，将多异氰酸酯组分施加到涂覆的肥料颗粒上以形成聚氨酯包封的肥料颗粒，以及任选地重复这些步骤 以形成包含约2至20重量％的聚氨酯的聚氨酯包封的肥料颗粒，基于包封的肥料颗粒的总重量。 合适的异氰酸酯反应性组分包括聚异戊二烯多元醇，其包含（i）OH值为约160至约170的蓖麻油，25℃下约500至约900mPa.s的粘度的混合物或其反应产物 含水量小于0.5重量％; 和（ii）OH值为28至700，官能度为3至8，分子量为约240至约6,000，粘度为约50至35,000mPa.s在25的聚醚多元醇 聚醚多元醇必须由合适的引发剂化合物和包含至少70重量％环氧丙烷的烯化氧制备。
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公开(公告)号：US06358296B1
公开(公告)日：2002-03-19
申请号：US09613680
申请日：2000-07-11
IPC分类号： C05G500
CPC分类号： C08G18/36 , C05G3/0029 , C08G18/7664
摘要： This invention relates to polyurethane encapsulated fertilizer particles which exhibit slow-release properties and to a process for their production. The process comprises (1) applying an isocyanate-reactive component or a polyisocyanate component to fertilizer particles, to form coated fertilizer particles, followed by (2) applying a polyisocyanate component or an isocyanate-reactive component onto the coated fertilizer particles to form polyurethane encapsulated fertilizer particles, and, optionally, repeating these steps as many times as necessary to form the polyurethane encapsulated fertilizer particles that contain about 2 to 20% by weight of polyurethane, based on the total weight of the encapsulated fertilizer particles. Alternatively, the isocyanate-reactive component and the polyisocyanate component can be premixed prior to being applied to the fertilizer particles to form polyurethane encapsulated fertilizer particles. Suitable isocyanate-reactive components comprise oleo polyols.
摘要翻译： 本发明涉及具有缓释特性的聚氨酯包封的肥料颗粒及其生产方法。 该方法包括（1）将异氰酸酯反应性组分或多异氰酸酯组分施用于肥料颗粒，以形成包覆的肥料颗粒，随后将（2）将多异氰酸酯组分或异氰酸酯反应性组分施加到涂覆的肥料颗粒上以形成聚氨酯包封 肥料颗粒，并且任选地重复这些步骤，以根据包封的肥料颗粒的总重量形成含有约2至20重量％聚氨酯的聚氨酯包封的肥料颗粒。 或者，异氰酸酯反应性组分和多异氰酸酯组分可以在施用于肥料颗粒之前预混合以形成聚氨酯包封的肥料颗粒。 合适的异氰酸酯反应性组分包括油醇多元醇。
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3.发明授权
公开(公告)号：US5212230A
公开(公告)日：1993-05-18
申请号：US677011
申请日：1991-03-28
CPC分类号： C08G18/5024 , C08G18/0866 , C08G18/5048
摘要： The present invention is directed to a process for the preparation of an aqueous polyurea dispersion bya) dispersing in water at an NCO:NH equivalent ratio of 0.5:1.0 to 2.0:1.0i) a polyisocyanate which has an average functionality of 1.5 to 4.0 and an isocyanate content of at least 12% by weight andii) a polyamine having at least two primary and/or secondary amino groups and a molecular weight of at least at an NCO:OH equivalent ratio of 0.5:1.0 to 2.0:1.01000 andb) allowing the polyisocyanate and polyamine to react to form an aqueous polyurea dispersion.The present invention is also directed to the aqueous polyurea dispersion prepared by this process.
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公开(公告)号：US5346981A
公开(公告)日：1994-09-13
申请号：US3755
申请日：1993-01-13
CPC分类号： C08G18/75 , A61L29/06 , C08G18/381 , C08G18/6633
摘要： This invention relates to radiopaque polyurethane compositions that are reaction products of(a) cycloaliphatic diisocyanates;(b) at least one polyester, polycarbonate, and/or polyester carbonate diol having a molecular weight of from about 1000 to about 6000;(c) an isocyanate-reactive bromine-containing aromatic chain extender; and(d) optionally, a catalyst;wherein the quantity of component (c) is such that the amount of bromine in the polyurethane composition is from 10 to 35% by weight, and wherein the components are reacted at an isocyanate index of from 0.95 to 1.2.
摘要翻译： 本发明涉及作为（a）脂环族二异氰酸酯的反应产物的不透射线的聚氨酯组合物; （b）分子量为约1000至约6000的至少一种聚酯，聚碳酸酯和/或聚酯碳酸酯二醇; （c）异氰酸酯反应性含溴芳族增链剂; 和（d）任选的催化剂; 其中组分（c）的量使得聚氨酯组合物中的溴的量为10至35重量％，并且其中组分以0.95至1.2的异氰酸酯指数反应。
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5.发明授权Hydrophilic polyvinylpyrrolidone compositions having a low coefficient of friction 失效具有低摩擦系数的亲水性聚乙烯吡咯烷酮组合物
公开(公告)号：US5250620A
公开(公告)日：1993-10-05
申请号：US796100
申请日：1991-11-21
CPC分类号： C08G18/71 , C08G18/283 , C08G18/4833 , C08G18/6283 , C08L75/04
摘要： The present invention is directed to a hydrophilic composition which is the reaction product of a polyvinylpyrrolidone, an organic monoisocyanate, and an oxyalkylene group containing mono- or di- hydroxyl compound.
摘要翻译： 本发明涉及亲水性组合物，其是聚乙烯吡咯烷酮，有机单异氰酸酯和含有一羟基或二羟基化合物的氧化烯基团的反应产物。
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公开(公告)号：US5191012A
公开(公告)日：1993-03-02
申请号：US677010
申请日：1991-03-28
CPC分类号： C08G18/0804 , C08G18/5036 , C08G18/703 , C08G18/8038
摘要： The present invention is directed to an aqueous dispersion of an encapsulated polyisocyanate which contains ureacted isocyanate groups and is prepared bya) dispersing in water a polyisocyanate which has an isocyanate content of at least 12% by weight andb) reacting the dispersed polyisocyanate with a polyamine having primary and/or secondary amino groups and a molecular weight of 400 or less in an amount sufficient to provide an equivalent ratio of amino groups to isocyanate groups of at least 0.05:1.0.The present invention is also directed to aqueous compositions containing the previously described encapsulated polyisocyanate and an isocyanate-reactive compound.
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公开(公告)号：US5656713A
公开(公告)日：1997-08-12
申请号：US660316
申请日：1996-06-07
CPC分类号： C08G18/664 , C08G18/4202 , C08G18/44
摘要： This invention relates to thermoformable polyurethanes prepared by the reaction, at a isocyanate ratio of from 0.8:1 to 1.5:1, of(a) aliphatic or cycloaliphatic polyisocyanates,(b) 45 to 95 equivalent percent, relative to component (a), of a polyester, polycarbonate, and/or polyester carbonate diol having a molecular weight of from 2000 to 5000,(c) 5 to 40 equivalent percent, relative to component (a), of one or more diols having an average molecular weight of from 90 to 530,(d) optional catalysts, and(e) optional fillers,wherein the thermoformable polyurethane is hard, flexible, and opaque at room temperature but softens and becomes formable and, if free of opaque fillers, clear upon heating to a temperature of less than 100.degree. C.
摘要翻译： 本发明涉及通过反应制备的可热成型聚氨酯，其异氰酸酯比为0.8:1至1.5:1，（a）脂族或脂环族多异氰酸酯，（b）相对于组分（a）为45-95当量％ 的相对于组分（a）的分子量为2000-5000的聚酯，聚碳酸酯和/或聚酯碳酸酯二醇，（c）5至40当量的一种或多种平均分子量为 90至530，（d）任选的催化剂和（e）任选的填料，其中可热成型聚氨酯在室温下是硬的，柔性的和不透明的，但软化并变得可成型，并且如果不含不透明填料，在加热至温度 小于100℃
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8.发明授权Aqueous polyisocyanate dispersions with reduced isocyanate contents and their use for the production of fiberglass mats 失效具有降低异氰酸酯含量的水性聚异氰酸酯分散体及其生产纤维层的用途
公开(公告)号：US5185200A
公开(公告)日：1993-02-09
申请号：US676670
申请日：1991-03-28
CPC分类号： C03C25/246 , C03C25/326 , C08G18/0804 , C08G18/3225 , C08G18/3271 , C08G18/5036 , C08G18/706 , C08G18/8038 , C08G18/8041 , Y10T428/2938 , Y10T442/2484 , Y10T442/2992
摘要： The present invention is directed to an aqueous polyisocyanate dispersion which has an isocyanate content of at least 0.5% by weight, based on the weight of the polyisocyanate, and is prepared bya) dispersing in water a polyisocyanate which has an isocyanate content of at least 12% by weight andb) reacting the dispersed polyisocyanate withi) a primary or secondary monoamine containing at least one hydroxyl group in an amount sufficient to provide an equivalent ratio of amino groups to isocyanate groups of 0.1:1.0 to 0.7:1.0 andii) a polyamine having primary and/or secondary amino groups and a molecular weight of 400 or less in an amount sufficient to provide an equivalent ratio of amino groups to isocyanate groups of 0.1:1.0 to 0.4:1.0, wherein component i) is mixed with the dispersed polyisocyanate either before or during the mixing of component ii) and provided that the equivalent ratio of amino groups from both components i) and ii) does not exceed 0.95:1.0.The present invention is also directed to a process for the preparation of a fibrous mat by treating fibers with the dispersed polyisocyanate before the isocyanate content of the dispersed polyisocyanate is less than 0.5% by weight, based on the weight of the polyisocyanate. Finally, the present invention is directed to the fibrous mats obtained in accordance with this process.
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公开(公告)号：US5177170A
公开(公告)日：1993-01-05
申请号：US907882
申请日：1992-07-02
CPC分类号： C08G18/75 , A61L29/06 , C08G18/381
摘要： This invention relates to radiopaque polyurethane compositions which are reaction products of(a) cycloaliphatic diisocyanates;(b) at least one polyether diol having a molecular weight of from about 500 to about 6000; and(c) an isocyanate-reactive bromine-containing compound selected from the group consisting of(i) tetrabromodipentaerythritol and(ii) a mixture of tetrabromodipentaerythritol and dibromoneopentyl glycol; and(d) optionally, a catalyst;wherein the amount of component (c) is such that bromine constitutes at least 15% by weight of the polyurethane composition, wherein the weight ratio of component (b) to component (c) is from about 2:98 to about 55:45, and wherein the components are reacted at an isocyanate index of from about 95 to about 120.
摘要翻译： 本发明涉及不透射线的聚氨酯组合物，它是（a）脂环族二异氰酸酯的反应产物; （b）至少一种分子量为约500至约6000的聚醚二醇; 和（c）选自（i）四溴二季戊四醇和（ii）四溴二季戊四醇和二溴新戊二醇的混合物的异氰酸酯反应性的含溴化合物; 和（d）任选的催化剂; 其中组分（c）的量使得溴占聚氨酯组合物的至少15重量％，其中组分（b）与组分（c）的重量比为约2:98至约55:45， 并且其中所述组分以约95至约120的异氰酸酯指数反应。
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公开(公告)号：US06352661B1
公开(公告)日：2002-03-05
申请号：US09375963
申请日：1999-08-17
IPC分类号： B32B516
CPC分类号： C08G18/708 , C08L97/02 , C08L75/04
摘要： The present invention relates to a process for producing lignocellulose composite materials by combining lignocellulose particles with a binder composition, followed by molding or compressing the combined lignocellulose particles and binder composition. Suitable binder compositions comprise a polymethylene poly(phenylisocyanate) component and a liquid hydrophobic diluent that is characterized by a flash point of at least 250° F.
摘要翻译： 本发明涉及通过将木质纤维素颗粒与粘合剂组合物结合，然后模制或压缩组合的木质纤维素颗粒和粘合剂组合物来生产木质纤维素复合材料的方法。 合适的粘合剂组合物包含多亚甲基聚（苯基异氰酸酯）组分和液体疏水性稀释剂，其特征在于闪点为至少250°F。
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