专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US4652589A Polymer/polyols having improved combustion resistance and intrinsic viscosity, methods of making same and polyurethanes prepared therefrom 失效
标题翻译：具有改善的耐燃性和特性粘度的聚合物/多元醇，其制备方法和由其制备的聚氨酯
公开(公告)号：US4652589A
公开(公告)日：1987-03-24
申请号：US699970
申请日：1985-02-08
申请人： Donald W. Simroth , Frank E. Critchfield , Richard C. Myerly
发明人： Donald W. Simroth , Frank E. Critchfield , Richard C. Myerly
IPC分类号： C08G18/00 , C08F283/00 , C08F283/06 , C08F291/08 , C08G18/63 , C08G18/14 , C09K3/00
CPC分类号： C08F291/08 , C08F283/06 , C08G18/63 , C08G18/635 , C08G18/636 , Y10S524/923
摘要： A normally liquid, stable polymer/polyol composition which imparts improved combustion resistance to polyurethane foams prepared therefrom while retaining satisfactory foam tensile properties are formed by polymerizing in the presence of a free radical catalyst and in the essential absence of an alkyl mercaptan, (1) from about 25 to about 60 weight percent of an ethylenically unsaturated monomer or monomers, for example, a mixture of acrylonitrile and styrene in a weight ratio respectively of 25:75 to 0:100, dissolved or dispersed in (2) from about 40 to about 75 weight percent of a polyol comprising a base polyol having a hydroxyl number of less than about 150, wherein the polymer is characterized by a crosslinking coefficient of less than 55 and an intrinsic viscosity of at least 0.30.A process for treating the resulting polymer/polyol composition to reduce the product viscosity to essentially the indigenous system viscosity in polymer/polyol compositions of this type is disclosed, as is a stabilizer precursor which assists in stabilizing the resulting polymer/polyol compositions.
摘要翻译：通过在自由基催化剂的存在下和基本不存在烷基硫醇的情况下聚合形成通常液体的，稳定的聚合物/多元醇组合物，其通过在保持令人满意的泡沫拉伸性能的同时保持令人满意的泡沫拉伸性能，约25至约60重量％的烯属不饱和单体或单体，例如丙烯腈和苯乙烯的混合物，其重量比分别为25:75至0:100，溶解或分散于（2）约40至约75重量％的包含羟基数小于约150的基础多元醇的多元醇，其中所述聚合物的特征在于交联系数小于55，特性粘度至少为0.30。公开了一种用于处理所得聚合物/多元醇组合物以将产品粘度降低至基本上这种类型的聚合物/多元醇组合物中的本体系粘度的方法，以及有助于稳定所得聚合物/多元醇组合物的稳定剂前体。

2. 发明授权

US4463107A Polymer/polyol compositions having improved combustion resistance 失效
标题翻译：具有改善的耐燃性的聚合物/多元醇组合物
公开(公告)号：US4463107A
公开(公告)日：1984-07-31
申请号：US409177
申请日：1982-08-18
申请人： Donald W. Simroth , Frank E. Critchfield , Edgar G. Shook
发明人： Donald W. Simroth , Frank E. Critchfield , Edgar G. Shook
IPC分类号： C08F2/38 , C08F283/00 , C08F283/06 , C08G18/63 , C08L75/04
CPC分类号： C08G18/63 , C08F283/00
摘要： A stable dispersion of a polymer in a polyol which imparts improved combustion resistance to polyurethane foams prepared therefrom wherein the polymer is a free-radical initiated copolymer containing from about 0.5 to 75 weight percent, based on the copolymer, of acrylonitrile and from about 25 to 99.5 weight percent, based on the copolymer, of at least one other polymerizible ethylenically unsaturated monomer and wherein the copolymer is characterized by a crosslinking coefficient of less than 55.
摘要翻译：聚合物在多元醇中的稳定分散体，其对由其制备的聚氨酯泡沫具有改进的耐燃烧性，其中聚合物是一种自由基引发的共聚物，其含量基于共聚物约为丙烯腈的约0.5至75重量％，丙烯腈为约25至基于共聚物的99.5重量％的至少一种其它可聚合烯键式不饱和单体，其中所述共聚物的特征在于交联系数小于55。

3. 发明授权

US5496894A Low viscosity polymer polyols with improved dispersion stability 失效
标题翻译：具有改进的分散稳定性的低粘度聚合物多元醇
公开(公告)号：US5496894A
公开(公告)日：1996-03-05
申请号：US258031
申请日：1994-06-10
申请人： Frank E. Critchfield , Donald W. Simroth , Stuart L. Watson
发明人： Frank E. Critchfield , Donald W. Simroth , Stuart L. Watson
IPC分类号： C08F283/00 , C08F291/08 , C08F283/02
CPC分类号： C08F283/00 , C08F291/08
摘要： The present invention provides polymer polyols and a method for preparing polymer polyols which have (1) exceptional dispersion stability, especially at high styrene contents, and (2) substantially smaller particle sizes than polymer polyols having equivalent viscosity. In a preferred embodiment of the present invention, a first reaction product is obtained by feeding the following materials to a first continuous reactor in the presence of a free radical initiator or catalyst: (a) less than about 50 wt. % of a total monomer proportion or monomer mixture, preferably comprising styrene/acrylonitrile at a ratio preferably greater than about 50/50 wt. %; (b) at least about 50 wt. % of a total base polyol proportion; (c) a majority of a precursor stabilizer; and, (d) a polymer control agent (PCA). The product from this first reaction then is again fed through a continuous reactor, which may be the same as the first reactor, along with additional initiator, at least about 50% of the total monomer proportion, and, optionally, any balance of the total base polyol proportion, precursor stabilizer, and PCA. The product from this second reactor is a high stability, low viscosity polymer polyol.
摘要翻译：本发明提供聚合物多元醇和制备聚合物多元醇的方法，其具有（1）特殊的分散稳定性，特别是在高苯乙烯含量下，和（2）与具有等同粘度的聚合物多元醇相比，颗粒尺寸基本上更小。在本发明的一个优选实施方案中，通过在自由基引发剂或催化剂存在下将下列物质进料到第一连续反应器中获得第一反应产物：（a）小于约50wt。总单体比例的％或单体混合物，优选包含苯乙烯/丙烯腈，其比例优选大于约50/50重量％。％; （b）至少约50wt。总基础多元醇比例的％（c）大部分前体稳定剂; 和（d）聚合物控制剂（PCA）。然后将来自该第一反应的产物再次通过连续反应器，其可以与第一反应器相同，以及额外的引发剂，至少约50％的总单体比例，以及任选地，总计的任何余量碱性多元醇比例，前体稳定剂和PCA。来自该第二反应器的产物是高稳定性，低粘度的聚合物多元醇。

4. 发明授权

US5364906A Low viscosity polymer polyols with improved dispersion stability 失效
标题翻译：具有改进的分散稳定性的低粘度聚合物多元醇
公开(公告)号：US5364906A
公开(公告)日：1994-11-15
申请号：US109777
申请日：1993-08-20
申请人： Frank E. Critchfield , Donald W. Simroth , Stuart L. Watson
发明人： Frank E. Critchfield , Donald W. Simroth , Stuart L. Watson
IPC分类号： C08F283/00 , C08F291/08 , C08F283/02
CPC分类号： C08F283/00 , C08F291/08
摘要： The present invention provides polymer polyols and a method for preparing polymer polyols which have (1) exceptional dispersion stability, especially at high styrene contents, and (2) substantially smaller particle sizes than polymer polyols having equivalent viscosity. In a preferred embodiment of the present invention, a first reaction product is obtained by feeding the following materials to a first continuous reactor in the presence of a free radical initiator or catalyst: (a) less than about 50 wt % of a total monomer proportion or monomer mixture, preferably comprising styrene/acrylonitrile at a ratio preferably greater than about 50/50 wt %; (b) at least about 50 wt % of a total base polyol proportion; (c) a majority of a precursor stabilizer; and, (d) a polymer control agent (PCA). The product from this first reaction then is again fed through a continuous reactor, which may be the same as the first reactor, along with additional initiator, at least about 50% of the total monomer proportion, and, optionally, any balance of the total base polyol proportion, precursor stabilizer, and PCA. The product from this second reactor is a high stability, low viscosity polymer polyol.
摘要翻译：本发明提供聚合物多元醇和制备聚合物多元醇的方法，其具有（1）特殊的分散稳定性，特别是在高苯乙烯含量下，和（2）与具有等同粘度的聚合物多元醇相比，颗粒尺寸基本上更小。在本发明的一个优选实施方案中，通过在自由基引发剂或催化剂存在下，将下列材料加入到第一连续反应器中获得第一反应产物：（a）小于约50重量％的总单体比例或单体混合物，优选包含苯乙烯/丙烯腈，其比例优选大于约50/50重量％; （b）至少约50重量％的总碱多元醇比例; （c）大部分前体稳定剂; 和（d）聚合物控制剂（PCA）。然后将来自该第一反应的产物再次通过连续反应器，其可以与第一反应器相同，以及额外的引发剂，至少约50％的总单体比例，以及任选地，总计的任何余量碱性多元醇比例，前体稳定剂和PCA。来自该第二反应器的产物是高稳定性，低粘度的聚合物多元醇。

5. 再颁专利

USRE32733E Polymer/polyol compositions having improved combustion resistance 失效
标题翻译：具有改善的耐燃性的聚合物/多元醇组合物
公开(公告)号：USRE32733E
公开(公告)日：1988-08-16
申请号：US808268
申请日：1985-12-12
申请人： Donald W. Simroth , Frank E. Critchfield , Edgar G. Shook
发明人： Donald W. Simroth , Frank E. Critchfield , Edgar G. Shook
IPC分类号： C08F283/06 , C08G18/63
CPC分类号： C08F283/06 , C08G18/63
摘要： A stable dispersion of a polymer in a polyol which imparts improved combustion resistance to polyurethane foams prepared therefrom wherein the polymer is a free-radical initiated copolymer containing from about 0.5 to 75 weight percent, based on the copolymer, of acrylonitrile and from about 25 to 99.5 weight percent, based on the copolymer, of at least one other polymerizible ethylenically unsaturated monomer and wherein the copolymer is characterized by a crosslinking coefficient of less than 55.

6. 发明授权

US4797501A Silicone-based stabilizers useful in the preparation of improved polyurethane foams 失效
标题翻译：可用于制备改进的聚氨酯泡沫的硅氧烷稳定剂
公开(公告)号：US4797501A
公开(公告)日：1989-01-10
申请号：US107343
申请日：1987-10-13
申请人： Richard C. Myerly , Michael W. Jorgenson , Frank E. Critchfield
发明人： Richard C. Myerly , Michael W. Jorgenson , Frank E. Critchfield
IPC分类号： C08G18/00 , C08G18/08 , C08G18/63 , C08G77/46 , C08G101/00 , C08J9/00 , C08J9/02 , C08J9/04 , C08L75/00 , C08L83/04 , C08L83/12 , C08G18/14
CPC分类号： C08G18/4072 , C08G18/61 , C08G18/636 , C08G77/46 , C08J9/0061 , C08G2101/0008 , C08G2101/0083 , C08J2375/04 , C08J2483/00
摘要： This invention relates to silicon-based polymer/polyol stabilizers, processes for their manufacture and polyurethane foams containing these stabilized polymer polyols.

7. 发明授权

US5718856A Process for manufacturing foam with improved wet set properties 失效
公开(公告)号：US5718856A
公开(公告)日：1998-02-17
申请号：US655177
申请日：1996-05-30
申请人： Mark R. Kinkelaar , Keith Douglas Cavender , James L. Lambach , Robert D. Brasington , Frank E. Critchfield
发明人： Mark R. Kinkelaar , Keith Douglas Cavender , James L. Lambach , Robert D. Brasington , Frank E. Critchfield
IPC分类号： C08G18/18 , C08G18/40 , C08G18/48 , C08G18/63 , C08G101/00 , B29C44/02
CPC分类号： C08G18/4072 , C08G18/4841 , C08G2101/0008 , C08G2101/005 , C08G2101/0058
摘要： High resilience polyurethane foams having improved wet set properties are obtained by reacting an isocyanate with a polyol component consisting of a polyoxyalkylene polyol with a functionality of 6 or more and a polymer polyol whose base polyol is a polyoxyalkylene polyol with a functionality of 6 or more, both polyols having oxyethylene caps in amounts of from 12 percent to about 30 percent based on the weights of the respective polyols, in the presence of an amine catalyst system. The resulting polyurethane foams are eminently suitable for seating cushions used in tropical or subtropical environments, may be prepared by a cold molding process, and may be used without an elevated temperature post cure.

8. 发明授权

US5549841A Process for manufacturing foam with improved wet set properties 失效
标题翻译：具有改善湿定型性能的泡沫制造方法
公开(公告)号：US5549841A
公开(公告)日：1996-08-27
申请号：US410439
申请日：1995-03-24
申请人： Mark R. Kinkelaar , Keith D. Cavender , James L. Lambach , Robert D. Brasington , Frank E. Critchfield
发明人： Mark R. Kinkelaar , Keith D. Cavender , James L. Lambach , Robert D. Brasington , Frank E. Critchfield
IPC分类号： C08G18/18 , C08G18/40 , C08G18/48 , C08G18/63 , C08G101/00 , C09K3/00 , C09G18/32
CPC分类号： C08G18/4072 , C08G18/4841 , C08G2101/0008 , C08G2101/005 , C08G2101/0058
摘要： High resilience polyurethane foams having improved wet set properties are obtained by reacting an isocyanate with a polyol component consisting of a polyoxyalkylene polyol with a functionality of 6 or more and a polymer polyol whose base polyol is a polyoxyalkylene polyol with a functionality of 6 or more, both polyols having oxyethylene caps in amounts of from 12 percent to about 30 percent based on the weights of the respective polyols, in the presence of an amine catalyst system. The resulting polyurethane foams are eminently suitable for seating cushions used in tropical or subtropical environments, may be prepared by a cold molding process, and may be used without an elevated temperature post cure.
摘要翻译：通过使异氰酸酯与官能度为6以上的聚氧化烯多元醇组成的多元醇成分和基础多元醇为6以上的聚氧化烯多元醇的聚合物多元醇反应，得到具有改善的湿定型性能的高弹性聚氨酯泡沫，在胺催化剂体系的存在下，基于相应多元醇的重量，两种多元醇的含量为12％至约30％。得到的聚氨酯泡沫特别适用于在热带或亚热带环境中使用的座垫，可以通过冷成型方法制备，并且可以在没有高温后固化的情况下使用。

9. 发明授权

US4883825A Process for the manufacture of low density, flexible polyurethane foams 失效
标题翻译：用于制造低密度，柔性聚氨酯泡沫的方法
公开(公告)号：US4883825A
公开(公告)日：1989-11-28
申请号：US139757
申请日：1987-12-30
申请人： Paul M. Westfall , Frank E. Critchfield , William A. Gill
发明人： Paul M. Westfall , Frank E. Critchfield , William A. Gill
IPC分类号： C08G18/00 , C08G18/08 , C08G18/30 , C08G18/32 , C08G18/48 , C08G18/63 , C08G18/65 , C08G18/66 , C08G101/00 , C08J9/02
CPC分类号： C08J9/02 , C08G18/4837 , C08G18/4841 , C08G18/632 , C08G18/6558 , C08G18/6677 , C08G2101/0008 , C08G2101/005 , C08G2101/0083 , C08J2375/08
摘要： A process for the manufacture of low density flexible polymethane foam via a catalyzed reaction of a highly reactive, high ethylene oxide, high functionality polyol, a hydrophilic polyhydric compound, water and polyisocyanates.

10. 发明授权

US6127443A Energy management polyurethane rigid foams with high recovery 失效
标题翻译：能量管理聚氨酯硬质泡沫具有高回收率
公开(公告)号：US6127443A
公开(公告)日：2000-10-03
申请号：US187869
申请日：1998-11-06
申请人： Mark J. Perry , James L. Lambach , Frank E. Critchfield
发明人： Mark J. Perry , James L. Lambach , Frank E. Critchfield
IPC分类号： C08G18/63 , C08G18/40 , C08G18/48 , C08G18/62 , C08G101/00 , C08J9/08 , C08J9/04 , C08L75/04
CPC分类号： C08G18/4072 , C08G2101/00 , C08G2101/0058 , C08G2101/0083
摘要： Energy absorbing rigid polyurethane foams have both high energy absorbing efficiency as well as exceptional recovery after deformation, allowing their use in visible energy absorbing structures, particularly in the transportation vehicle industry. The foams are prepared by reaction of one or more di- or polyisocyanates with a polyol component containing both high and low molecular weight polyols, and optionally chain extenders, crosslinkers, and other additives, wherein at least one polyol is a polymer polyol such that the total vinyl polymer solids content of the foam is greater than 15 weight percent.
摘要翻译：能量吸收硬质聚氨酯泡沫具有高能量吸收效率以及变形后的特殊恢复，允许其在可见光吸收结构中使用，特别是在运输车辆工业中。泡沫是通过一种或多种二异氰酸酯或多异氰酸酯与含有高分子量和低分子量多元醇的多元醇组分以及任选的增链剂，交联剂和其它添加剂的反应制备的，其中至少一种多元醇是聚合物多元醇，泡沫塑料的总乙烯基聚合物固体含量大于15重量％。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式