-
公开(公告)号：US20090176934A1
公开(公告)日：2009-07-09
申请号：US12378642
申请日：2009-02-17
IPC分类号： C08L27/18 , C08F214/26
CPC分类号： C08F214/26 , Y10T428/31862
摘要： A polymerization process for producing a tetra-fluoroethylene copolymer, and the copolymer produced thereby, are provided. The copolymer is of the dispersion/fine powder type and contains polymerized tetrafluoroethylene monomer units and co-polymerized higher homologous comonomer units having the formula (CnF(2n+1))CH═CH2, wherein 6≦n
摘要翻译： 提供了用于制备四氟乙烯共聚物的聚合方法和由此制备的共聚物。 该共聚物是分散体/细粉末型，并且含有聚合的四氟乙烯单体单元和具有式（CnF（2n + 1））CH-CH 2的共聚合的较高同系共聚单体单元，其中6 <= n <10，其中 相信基本颗粒具有核和壳结构，聚合的共聚单体单元以基于总共聚物组成的0.01mol％至0.3mol％的量存在。 共聚物具有小于0.210微米的原始分散体一次粒径（RDPS），与标准比重（SSG）相比小于2.143。 优选地，共聚物具有以0.05mol％和0.25mol％的量存在的共聚单体单元，并且RDPS在0.178μm至0.200μm之间的范围内，与SSG小于2.140。 根据本发明生产的共聚物（全氟己基）乙烯（PFHE）和（全氟辛基）乙烯（PFOE）可以成形为0.1英寸直径的膨胀珠的形式，其膨胀的珠粒可以具有至少10.0磅的断裂强度， 并可能超过13.0磅。
-
公开(公告)号：US07531611B2
公开(公告)日：2009-05-12
申请号：US11174882
申请日：2005-07-05
IPC分类号： C08F214/26
CPC分类号： C08F214/26 , Y10T428/31862
摘要： A polymerization process for producing a tetrafluoroethylene copolymer, and the copolymer produced thereby, are provided. The copolymer is of the dispersion/fine powder type and contains polymerized tetrafluoroethylene monomer units and co-polymerized higher homologous comonomer units having the formula (CnF(2n+1))CH═CH2, wherein 6≦n
摘要翻译： 提供了制造四氟乙烯共聚物的聚合方法和由此制备的共聚物。 该共聚物是分散体/细粉末型，并且含有聚合的四氟乙烯单体单元和具有式（CnF（2n + 1））CH-CH 2的共聚合的较高同系共聚单体单元，其中6 <= n <10，其中 相信基本颗粒具有核和壳结构，聚合的共聚单体单元以基于总共聚物组成的0.01mol％至0.3mol％的量存在。 共聚物具有小于0.210微米的原始分散体一次粒径（RDPS），与标准比重（SSG）相比小于2.143。 优选地，共聚物具有以0.05mol％和0.25mol％的量存在的共聚单体单元，并且RDPS在0.178μm至0.200μm之间的范围内，与SSG小于2.140。 根据本发明制备的共聚物（全氟己基）乙烯（PFHE）和（全氟辛基）乙烯（PFOE）可以成形为0.1英寸直径的膨胀珠的形式，其膨胀的珠粒可以具有至少10.0磅的断裂强度， 并可能超过13.0磅。
-
公开(公告)号：US07060354B2
公开(公告)日：2006-06-13
申请号：US10339787
申请日：2003-01-09
IPC分类号： D01F6/00
CPC分类号： D01F6/12 , A61C15/041 , Y10T428/2913 , Y10T428/2967 , Y10T428/3154
摘要： A dental floss comprising a porous PTFE fiber having a density of less than about 0.7 g/cc. The inventive floss is abrasion resistant, grippable and has a soft feel to the hands and a rough feel in the mouth. The floss is made by an extrusion process with non-contact heating during subsequent expansion with amorphous locking.
-
公开(公告)号：US08263719B2
公开(公告)日：2012-09-11
申请号：US12378642
申请日：2009-02-17
IPC分类号： C08F214/26
CPC分类号： C08F214/26 , Y10T428/31862
摘要： A polymerization process for producing a tetra-fluoroethylene copolymer, and the copolymer produced thereby, are provided. The copolymer is of the dispersion/fine powder type and contains polymerized tetrafluoroethylene monomer units and co-polymerized higher homologous comonomer units having the formula (CnF(2n+1))CH═CH2, wherein 6≦n
摘要翻译： 提供了用于制备四氟乙烯共聚物的聚合方法和由此制备的共聚物。 该共聚物是分散体/细粉末型，并且含有聚合的四氟乙烯单体单元和具有式（CnF（2n + 1））CH = CH 2的共聚合的较高同系共聚单体单元，其中6
-
公开(公告)号：US07084225B2
公开(公告)日：2006-08-01
申请号：US11052333
申请日：2005-02-07
申请人： Richard L. Baillie
发明人： Richard L. Baillie
IPC分类号： C08F214/26
CPC分类号： C08F214/18 , C08F214/26 , Y10T428/31862
摘要： A polymerization process for producing a copolymer of tetrafluoroethylene and (perfluorobutyl)ethylene, prepared by an aqueous dispersion polymerization technique, and the resin produced thereby, are provided. This copolymer contains a relatively small amount, between about 0.02 weight percent and about 0.6 weight percent, of comonomer polymerization units. The copolymer is believed to be comprised of a core-shell structure wherein the polymerized comonomer units reside primarily within the core. The primary particle size of the copolymer ranges from 0.175 microns to and including 0.203 microns and the standard specific gravity is less than 2.143. This copolymer possesses a unique combination of very small particle size coupled with high molecular weight, a combination not heretofore achieved in tetra-fluoroethylene polymers of the dispersion or fine powder type. The process of this invention is characterized by permanganate initiation and the entire reaction is carried out in the absence of zinc chloride or other ionic strength enhancer. The addition of initiator must be stopped well before completion of the reaction, preferably at or before the mid-point of the complete reaction.
摘要翻译： 提供了通过水分散聚合技术制备的四氟乙烯和（全氟丁基）乙烯的共聚物的聚合方法和由其制备的树脂。 该共聚物含有相对少量的约0.02重量％至约0.6重量％的共聚单体聚合单元。 该共聚物被认为是由核 - 壳结构组成，其中聚合的共聚单体单元主要存在于芯中。 共聚物的一次粒径为0.175微米至0.203微米，标准比重小于2.143。 该共聚物具有与分子量或细粉末类型的四氟乙烯聚合物中迄今未得到的结合的高分子量非常小的粒度的独特组合。 本发明的方法的特征在于高锰酸盐引发，整个反应在不存在氯化锌或其它离子强度增强剂的情况下进行。 引发剂的加入必须在反应完成之前停止，优选在完全反应的中点或之前。
-
公开(公告)号：US06541589B1
公开(公告)日：2003-04-01
申请号：US09977812
申请日：2001-10-15
申请人： Richard L. Baillie
发明人： Richard L. Baillie
IPC分类号： C08F21426
CPC分类号： C08F214/18 , C08F214/26 , Y10T428/31862
摘要： A polymerization process for producing a copolymer of tetrafluoroethylene and perfluorobutylethylene, prepared by an aqueous dispersion polymerization technique, and the resin produced thereby, are provided. This copolymer contains a relatively small amount, between about 0.02 weight percent and about 0.6 weight percent, of comonomer polymerization units. The copolymer is believed to be comprised of a core-shell structure wherein the polymerized comonomer units reside primarily within the core. The primary particle size of the copolymer ranges from 0.175 microns to and including 0.203 microns and the standard specific gravity is less than 2.143. This copolymer possesses a unique combination of very small particle size coupled with high molecular weight, a combination not heretofore achieved in tetra-fluoroethylene polymers of the dispersion or fine powder type. The process of this invention is characterized by permanganate initiation and the entire reaction is carried out in the absence of zinc chloride or other ionic strength enhancer. The addition of initiator must be stopped well before completion of the reaction, preferably at or before the mid-point of the complete reaction.
摘要翻译： 提供了通过水分散聚合技术制备四氟乙烯和全氟丁基乙烯共聚物的聚合方法以及由此制备的树脂。 该共聚物含有相对少量的约0.02重量％至约0.6重量％的共聚单体聚合单元。 该共聚物被认为是由核 - 壳结构组成，其中聚合的共聚单体单元主要存在于芯中。 共聚物的一次粒径为0.175微米至0.203微米，标准比重小于2.143。 该共聚物具有与分子量或细粉末类型的四氟乙烯聚合物中迄今未得到的结合的高分子量非常小的粒度的独特组合。 本发明的方法的特征在于高锰酸盐引发，整个反应在不存在氯化锌或其它离子强度增强剂的情况下进行。 引发剂的加入必须在反应完成之前停止，优选在完全反应的中点或之前。
-
公开(公告)号：US06539951B2
公开(公告)日：2003-04-01
申请号：US09449078
申请日：1999-11-24
IPC分类号： A61C1500
CPC分类号： D01F6/12 , A61C15/041
摘要： A dental floss comprising a porous PTFE fiber having a density of less than about 0.7 g/cc. The inventive floss is abrasion resistant, grippable and has a soft feel to the hands and a rough feel in the mouth. The floss is made by an extrusion process with non-contact heating during subsequent expansion with amorphous locking.
摘要翻译： 一种牙线，其包含密度小于约0.7g / cc的多孔PTFE纤维。 本发明的牙线是耐磨，可抓握的，并且对手有柔软的感觉和口中粗糙的感觉。 在随后的无定形锁定膨胀过程中，通过非接触加热的挤压方法制成牙线。
-
-
-
-
-
-
搜索结果
7 条记录 (耗时 0.014 秒)
