-
公开(公告)号：US5708073A
公开(公告)日：1998-01-13
申请号：US652884
申请日：1996-05-23
CPC分类号： C08G18/4244 , C05G3/0029 , C08G18/0819 , C08G18/283 , C08G18/4238
摘要： The present invention is directed to a non-aqueous, base-degradable polyurethane. The polyurethane is prepared by reacting an organic polyisocyanate with a hydroxyl group containing hydrophilic composition. The hydrophilic composition must have specified amounts of ionic or acidic groups and specific amounts of polyester groups. In a preferred embodiment, the hydrophilic composition also contains polyoxyethylene groups.
摘要翻译： 本发明涉及非水基的可降解的聚氨酯。 通过使有机多异氰酸酯与含有亲水组合物的羟基反应制备聚氨酯。 亲水性组合物必须具有规定量的离子或酸性基团和特定量的聚酯基团。 在优选的实施方案中，亲水性组合物还含有聚氧乙烯基团。
-
公开(公告)号：US5510445A
公开(公告)日：1996-04-23
申请号：US343402
申请日：1994-11-22
CPC分类号： C08G18/6529 , C08G18/5024 , C08G18/5027 , C08G18/6685 , C08G18/758 , C08G2120/00 , Y10S264/77
摘要： This invention relates to a one-step process for preparing polyurea elastomers comprising reaction at an isocyanate index of from 90 to 200 of(a) one or more aliphatic and/or cycloaliphatic diisocyanates;(b) 25 to 70 equivalent percent, relative to the total of components (b) and (c), of one or more liquid amine-terminated polymers containing at least two aromatically bound isocyanate-reactive primary or secondary amino groups and/or aliphatically bound isocyanate-reactive secondary amino groups and having a molecular weight of from 400 to 6000; and(c) 75 to 30 equivalent percent, relative to the total of components (b) and (c), of one or more aromatic diamine chain extenders having a molecular weight of from 108 to 399, optionally in admixture with one or more crosslinkers.
摘要翻译： 本发明涉及制备聚脲弹性体的一步法，该方法包括（a）一种或多种脂族和/或脂环族二异氰酸酯的异氰酸酯指数为90至200的反应; （b）相对于组分（b）和（c）的总量为25至70当量的一种或多种含有至少两个芳族结合的异氰酸酯反应性伯或仲氨基的液体胺封端的聚合物和/或脂族 结合的异氰酸酯反应性仲氨基并且分子量为400至6000; 和（c）相对于组分（b）和（c）的总量为75至30当量的一种或多种分子量为108至399的芳族二胺增链剂，任选地与一种或多种交联剂 。
-
73.发明授权Polyurethane carpet backing process based on polymeric MDI quasi-prepolymers 失效基于聚合MDI准预聚物的聚氨酯地毯背衬工艺
公开(公告)号：US5462766A
公开(公告)日：1995-10-31
申请号：US196321
申请日：1994-02-15
CPC分类号： C08G18/8064 , C08G18/7664 , C08G18/8019 , D06N3/14 , D06N7/0086 , C08G2101/00 , D06N2203/068 , D06N2205/20
摘要： This invention relates to a process for the production of a polyurethane cushion backing on a substrate. In particular, the polyurethane to be used in the process is produced by the reaction of an isocyanate and a polyol mixture, wherein the isocyanate is based on polymethylene poly(phenylisocyanate) and having a monomer content of less than 55%, a 2,2'- and 2,4'-methylene bis(phenylisocyanate) content of less than 3%, a functionality of less than 2.5, an isocyanate group content of 25 to 30%, and a urethane group content of about 2 to 6%.
摘要翻译： 本发明涉及在基材上生产聚氨酯垫衬垫的方法。 特别地，在该方法中使用的聚氨酯通过异氰酸酯和多元醇混合物的反应来制备，其中异氰酸酯基于多亚甲基聚异氰酸苯酯，并且具有小于55％的单体含量，2,2 '和2,4'-亚甲基双（苯基异氰酸酯）含量小于3％，官能度小于2.5，异氰酸酯基含量为25至30％，氨基甲酸酯基含量为约2至6％。
-
公开(公告)号：US5389720A
公开(公告)日：1995-02-14
申请号：US529056
申请日：1990-05-25
CPC分类号： C03C25/26 , C03C25/246 , C08G18/283 , C08G18/706 , C08G18/8041 , C08G18/8064 , Y10T442/60
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 and is rendered hydrophilic by reaction with a compound containing a lateral or terminal nonionic hydrophilic group andb) chain extending the dispersed polyisocyanate with 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 0.6:1.0 to 0.95:1.0.
摘要翻译： 本发明涉及多异氰酸酯分散体，其异氰酸酯含量基于多异氰酸酯的重量为至少0.5重量％，并且通过以下步骤制备：a）在水中分散异氰酸酯含量至少为异氰酸酯的多异氰酸酯 12重量％，并通过与含有侧面或末端非离子亲水基团的化合物反应而变得亲水，以及b）使分散的多异氰酸酯与含有至少一个羟基的伯或仲单胺延伸的量足以提供当量比 的氨基与异氰酸酯基的比例为0.6：1.0至0.95：1.0。
-
公开(公告)号：US5283298A
公开(公告)日：1994-02-01
申请号：US95114
申请日：1993-07-20
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。
-
公开(公告)号：US5166303A
公开(公告)日：1992-11-24
申请号：US513466
申请日：1990-04-19
IPC分类号： C08G18/08 , C08G18/10 , C09J175/04
CPC分类号： C09J175/04 , C08G18/0885 , C08G18/10 , C08G2101/0083 , C08G2170/60
摘要： The present invention is directed an expandable, non-sagging polyurethane composition prepared by mixing: a liquid polysocyanate with a liquid isocyanate reactive mixture. The isocyanate reactive mixture comprises i) one or more hydroxyl group containing compounds containing from 2 to 8 hydroxyl groups and having molecular weights of from about 1000 to about 6000, ii) one or more low molecular weight diols or triols having hydroxyl equivalent weights of about 200 or less, iii) one or more organic di- or polyamines, and iv) a relatively small amount of water.
-
77.发明授权Continuous process for the production of aqueous polyurethane urea dispersions 失效用于生产水性聚氨酯脲分散体的连续工艺
公开(公告)号：US4879322A
公开(公告)日：1989-11-07
申请号：US188823
申请日：1988-05-02
CPC分类号： C08G18/7818 , C08G18/0804 , C08G18/0866 , C08G18/10 , C08G18/2805 , C08G18/5042
摘要： The present invention is directed to a continuous process for the production of aqueous polyurethane-urea dispersions by(a) mixing an emulsifiable isocyanate-terminated prepolymer with an aqueous medium in a low shear, stator-rotor dynamic mixer operating at a speed of about 500 to 8000 rpm utilizing a mixing wattage of about 0.3 to 10.0 watts/cubic centimeter and a mixing volume of at least about 0.1 liters, the average residence time of the aqueous medium and the prepolymer being about 1 to 30 seconds and the overall flow rate through the dynamic mixer being at least about 50 kg/h and(b) reacting the dispersed isocyanate-terminated prepolymer prepared in (a) with a polyamine chain extender to form an aqueous polyurethane-urea dispersion.
摘要翻译： 本发明涉及一种用于生产水性聚氨酯 - 脲分散体的连续方法，其通过（a）在低剪切，定子 - 转子动态混合器中以约500的速度混合可乳化的异氰酸酯封端的预聚物与水性介质 使用约0.3至10.0瓦/立方厘米的混合功率和至少约0.1升的混合体积，水介质和预聚物的平均停留时间为约1至30秒，总流速通过 所述动态混合器至少约50kg / h，和（b）使（a）中制备的分散的异氰酸酯封端的预聚物与聚胺扩链剂反应以形成水性聚氨酯 - 尿素分散体。
-
78.发明授权Continuous process for the production of aqueous polyurethane-urea dispersions 失效用于生产水性聚氨酯 - 尿素分散体的连续工艺
公开(公告)号：US4742095A
公开(公告)日：1988-05-03
申请号：US914908
申请日：1986-10-21
CPC分类号： C08G18/7818 , C08G18/0804 , C08G18/0866 , C08G18/10 , C08G18/2805 , C08G18/5042
摘要： The present invention is directed to a continuous process for the production of aqueous polyurethane-urea dispersions by(a) mixing an emulsifiable isocyanate-terminated prepolymer with an aqueous medium in a low shear, stator-rotor dynamic mixer operating at a speed of about 500 to 8000 rpm utilizing a mixing wattage of about 0.3 to 10.0 watts/cubic centimeter and a mixing volume of at least about 0.1 liters, the average residence time of the aqueous medium and the prepolymer being about 1 to 30 seconds and the overall flow rate through the dynamic mixer being at least about 50 kg/h and(b) reacting the dispersed isocyanate-terminated prepolymer prepared in (a) with a polyamine chain extender to form an aqueous polyurethane-urea dispersion.
摘要翻译： 本发明涉及一种用于生产水性聚氨酯 - 脲分散体的连续方法，其通过（a）在低剪切，定子 - 转子动态混合器中以约500的速度混合可乳化的异氰酸酯封端的预聚物与水性介质 使用约0.3至10.0瓦/立方厘米的混合功率和至少约0.1升的混合体积，水介质和预聚物的平均停留时间为约1至30秒，总流速通过 所述动态混合器至少约50kg / h，和（b）使（a）中制备的分散的异氰酸酯封端的预聚物与聚胺扩链剂反应以形成水性聚氨酯 - 尿素分散体。
-
79.发明授权Elastomer polyurethane-polyurea coatings based on bis(4-isocyanatocyclohexyl)methane 失效基于双（4-异氰酸根合环己基）甲烷的弹性体聚氨酯 - 聚脲涂料
公开(公告)号：US4581433A
公开(公告)日：1986-04-08
申请号：US728124
申请日：1985-04-29
CPC分类号： C08G18/758 , C08G18/10 , C08G18/4825 , C08G18/4829
摘要： The present invention relates to coating compositions comprising (i) an isocyanate prepolymer based on bis(4-isocyanatocyclohexyl)methane and polyalkylene ether polyols having hydroxyl functionalities of 2 to 3 and (ii) at least one diprimary aromatic diamine having at least one alkyl substituent in an ortho-position to one amino group and two alkyl substituents in both ortho-positions to the other amino group.
摘要翻译： 本发明涉及涂料组合物，其包含（i）基于双（4-异氰酸根合环己基）甲烷的异氰酸酯预聚物和羟基官能度为2至3的聚亚烷基醚多元醇和（ii）至少一种具有至少一个烷基取代基的二原子芳族二胺 在与另一个氨基的两个邻位的一个氨基和两个烷基取代基的邻位。
-
-
-
-
-
-
-
-
搜索结果
79 条记录 (耗时 0.041 秒)
