-
公开(公告)号：US07342074B2
公开(公告)日：2008-03-11
申请号：US11811755
申请日：2007-06-12
IPC分类号： C08F259/00
CPC分类号： C08K5/13 , C08F8/00 , C08F259/08 , C08F2800/20 , C08F2810/20 , C08F2810/30 , C08L27/12 , C08F8/26
摘要： Polyhydroxy curable fluoroelastomers that are substantially free of nucleophilic endgroups are grafted with a monophenol having at least one pendant group. The resulting grafted fluoroelastomers retain most of the properties of the original elastomers including excellent pre-vulcanization characteristics, while incorporating pendant groups which may be used for further modification, crosslinking or for changing the physical properties (e.g. Tg) of the fluoroelastomer.
摘要翻译： 基本上不含亲核端基的多羟基固化性含氟弹性体用具有至少一个侧基的单酚接枝。 所得接枝的含氟弹性体保留原始弹性体的大部分性质，包括优异的预硫化特性，同时加入可用于进一步改性，交联或改变物理性质的侧基（例如T“ ）的含氟弹性体。
-
公开(公告)号：US06916887B2
公开(公告)日：2005-07-12
申请号：US10404368
申请日：2003-04-01
IPC分类号： C08F210/02 , C08F214/18 , C08F214/26 , C08F216/14 , C08K5/00 , C08K5/13 , C08K5/17 , C08K5/42 , C08K5/51 , C08L27/12 , C08F116/12
CPC分类号： C08F214/265 , C08K5/0025 , C08K5/13 , C08L27/12
摘要： A base resistant, substantially amorphous fluoroelastomer comprising (1) 10-40 mole percent ethylene units, (2) 32-60 mole percent tetrafluoroethylene units, (3) 20-40 mole percent perfluoro ether units selected from the group consisting of perfluoro(alkyl vinyl ethers), perfluoro(alkyl alkenyl ethers) and perfluoro(alkoxy alkenyl ethers), and (4) 0.1 to 15 mole percent of a cure site monomer selected from the group consisting of i) perfluoroalkyl ethylenes and ii) perfluoroalkoxy ethylenes. Such fluoroelastomers may be vulcanized with polyhydroxy curing agents. The resulting vulcanized fluoroelastomers are resistant to attack by amines, strong bases and hydrogen sulfide and possess a combination of good low temperature and high temperature properties and they are resistant to oil swell.
摘要翻译： 包含（1）10-40摩尔％乙烯单元，（2）32-60摩尔％四氟乙烯单元，（3）20-40摩尔％全氟醚单元的碱性电阻基本无定形含氟弹性体，其选自全氟（烷基 乙烯基醚），全氟（烷基烯基醚）和全氟（烷氧基烯基醚），和（4）选自i）全氟烷基乙烯和ii）全氟烷氧基乙烯的固化部位单体0.1至15摩尔％。 这种含氟弹性体可以用多羟基固化剂硫化。 得到的硫化含氟弹性体耐受胺，强碱和硫化氢的侵蚀，具有良好的低温和高温性能的组合，并且耐油膨胀。
-
公开(公告)号：US06887959B2
公开(公告)日：2005-05-03
申请号：US10670086
申请日：2003-09-24
IPC分类号： C08K5/053 , C08F210/02 , C08F214/26 , C08F216/14 , C08K5/00 , C08K5/136 , C08L27/18 , C08F130/02
CPC分类号： C08F214/262 , C08K5/0025 , C08K5/136 , C08L27/12
摘要： A base resistant, substantially amorphous fluoroelastomer comprising (1) 10-40 mole percent ethylene units, (2) 32-60 mole percent tetrafluoroethylene units, (3) 20-40 mole percent perfluoro ether units selected from the group consisting of perfluoro(alkyl vinyl ethers), perfluoro(alkyl alkenyl ethers) and perfluoro(alkoxy alkenyl ethers), and (4) 0.1 to 15 mole percent of a cure site monomer selected from the group consisting of i) 3,3,3-trifluoropropene-1, ii) trifluoroethylene, iii) 1,2,3,3,3-pentafluoropropylene, iv) 1,1,3,3,3-pentafluoropropylene, and v) 2,3,3,3-tetrafluoropropene. Such fluoroelastomers may be vulcanized with polyhydroxy curatives. The resulting vulcanized fluoroelastomer compositions are resistant to attack by amines, strong bases and hydrogen sulfide and possess a combination of good low temperature and high temperature properties and they are resistant to oil swell.
摘要翻译： 包含（1）10-40摩尔％乙烯单元，（2）32-60摩尔％四氟乙烯单元，（3）20-40摩尔％全氟醚单元的碱性电阻基本无定形含氟弹性体，其选自全氟（烷基 乙烯基醚），全氟（烷基烯基醚）和全氟（烷氧基烯基醚），和（4）选自i）3,3,3-三氟丙烯-1， ii）三氟乙烯，iii）1,2,3,3,3-五氟丙烯，iv）1,1,3,3,3-五氟丙烯和v）2,3,3,3-四氟丙烯。 这种含氟弹性体可以用多羟基固化剂硫化。 得到的硫化含氟弹性体组合物耐胺，强碱和硫化氢的侵蚀，具有良好的低温和高温特性的组合，并且耐油膨胀。
-
公开(公告)号：US06281296B1
公开(公告)日：2001-08-28
申请号：US09366979
申请日：1999-08-04
IPC分类号： C08K521
CPC分类号： C08K5/0025 , C08K5/18 , C08L27/12
摘要： Perfluoroelastomer compositions comprising perfluoroelastomers having copolymerized units of tetrafluoroethylene, a perfluoro(vinyl ether), and a nitrile-containing cure site monomer are cured with compounds that are capable of generating ammonia at temperatures of 40° C.-330° C. to produce cured compositions having excellent thermal stability. The ammonia-generating compounds also act as cure accelerators in perfluoroelastomer compositions that incorporate other curing agents.
摘要翻译： 包含具有四氟乙烯，全氟（乙烯基醚）和含腈固化部位单体的共聚单元的全氟弹性体的全氟弹性体组合物在能够在40℃-330℃的温度下产生氨的化合物固化以产生固化 组合物具有优异的热稳定性。 产生氨的化合物还用作结合其它固化剂的全氟弹性体组合物中的固化促进剂。
-
公开(公告)号：US06211319B1
公开(公告)日：2001-04-03
申请号：US09151632
申请日：1998-09-11
IPC分类号： C08L2712
CPC分类号： C08F8/00 , C08F214/262 , C08F2800/20
摘要： Perfluoroelastomer compositions of improved processability are provided which have reduced levels of ionized or ionizable polymer endgroups.
摘要翻译： 提供了改进加工性的全氟弹性体组合物，其具有降低的离子化或可电离聚合物端基的水平。
-
6.发明授权
公开(公告)号：US5874523A
公开(公告)日：1999-02-23
申请号：US971955
申请日：1997-11-17
CPC分类号： C08K5/0025 , C08F8/00 , C08F2800/20
摘要： Curable perfluoroelastomer compositions are prepared in the presence of an initiator system comprising a mixture of a persulfate salt and a reducing agent wherein the amount of reducing agent present is no more than 20 mole percent of the total initiator system. The perfluoroelastomer is isolated and decarboxylated, thereby providing a product having excellent processability.
摘要翻译： 在包含过硫酸盐和还原剂的混合物的引发剂体系的存在下制备可固化的全氟弹性体组合物，其中存在的还原剂的量不超过总引发剂体系的20摩尔％。 全氟弹性体被分离和脱羧，从而提供具有优异加工性能的产品。
-
公开(公告)号：US06703450B2
公开(公告)日：2004-03-09
申请号：US10137914
申请日：2002-05-02
IPC分类号： C08F21426
CPC分类号： C08F214/265
摘要： Compositions of specialty fluoroelastomers containing copolymerized units of tetrafluoroethylene, propylene, optionally vinylidene fluoride, and a cure site monomer selected from the group consisting of i) trifluoroethylene, ii) 3,3,3-trifluoropropene-1, iii) 1,2,3,3,3-pentafluoropropylene, iv) 1,1,3,3,3-pentafluoropropylene, and v) 2,3,3,3-tetrafluoropropene are readily curable with polyhydroxy curing systems. The resulting cured articles have a combination of excellent resistance to alkaline fluids, superior tensile properties and compression set resistance.
-
公开(公告)号：US5959052A
公开(公告)日：1999-09-28
申请号：US213829
申请日：1998-12-17
CPC分类号： C08K5/0025 , C08F8/00 , C08F2800/20
摘要： Curable perfluoroelastomer compositions are prepared in the presence of an initiator system comprising a mixture of a persulfate salt and a reducing agent wherein the amount of reducing agent present is no more than 20 mole percent of the total initiator system. The perfluoroelastomer is isolated and decarboxylated, thereby providing a product having excellent processability.
-
公开(公告)号：US3933732A
公开(公告)日：1976-01-20
申请号：US469840
申请日：1974-05-14
CPC分类号： C08K5/41
摘要： A fluoroelastomer composition which has beneficial utility in the rapid manufacture of cured fluoroelastomer articles having good strength and resistance to compression set can be prepared by blending the following components: (A) an elastomeric copolymer of vinylidene fluoride and another fluorine-containing monomer, and (B) as a vulcanization agent, a carboxylic acid ester of 4,4'-sulfonylidiphenol (for example, 4,4'-sulfonyldiphenol diacetate); and when making the cured articles, it is also preferred to add (C) a suitable metal compound such as a divalent metal oxide or hydroxide, and (D) a suitable accelerator, for example a certain type of quaternary phosphonium compound.
摘要翻译： 在快速制造具有良好强度和耐压缩变形性的固化的含氟弹性体制品中有益的有用的含氟弹性体组合物可以通过共混以下组分来制备：（A）一氟乙烯与另一种含氟单体的弹性体共聚物和（ B）作为硫化剂，4,4'-磺酰基二苯酚（例如4,4'-磺酰基二苯酚二乙酸酯）的羧酸酯; 制造固化物时，优选添加（C）二价金属氧化物或氢氧化物等合适的金属化合物，（D）合适的促进剂，例如某种季铵化合物。
-
公开(公告)号：US07253236B2
公开(公告)日：2007-08-07
申请号：US11134098
申请日：2005-05-20
IPC分类号： C08F259/00
CPC分类号： C08K5/13 , C08F8/00 , C08F259/08 , C08F2800/20 , C08F2810/20 , C08F2810/30 , C08L27/12 , C08F8/26
摘要： Polyhydroxy curable fluoroelastomers that are substantially free of nucleophilic endgroups are grafted with a monophenol having at least one pendant group. The resulting grafted fluoroelastomers retain most of the properties of the original elastomers including excellent pre-vulcanization characteristics, while incorporating pendant groups which may be used for further modification, crosslinking or for changing the physical properties (e.g. Tg) of the fluoroelastomer.
摘要翻译： 基本上不含亲核端基的多羟基固化性含氟弹性体用具有至少一个侧基的单酚接枝。 所得到的接枝的含氟弹性体保留原始弹性体的大部分性质，包括优异的预硫化特性，同时加入可用于进一步改性，交联或改变物理性质的侧基（例如T“ ）的含氟弹性体。
-
-
-
-
-
-
-
-
-
搜索结果
28 条记录 (耗时 0.019 秒)
