摘要:
Multilayer polymeric films which may be useful for protecting the leading edges of aircraft from rain and sand erosion are presented. Typical surface protection films comprising two or more layers of a first material alternating with one or more layers of a second material, wherein the first and second materials are different materials, wherein the first and second materials comprise first and second polymers, wherein the first and second materials have a first and second Shore hardness, and wherein the first Shore hardness is greater than the second Shore hardness by more than 5 A or more typically more than 10 A.
摘要:
The invention provides electronic articles and methods of making said articles. The electronic articles comprise an electronic component bonded and electrically connected to a substrate using an underfill adhesive comprising the reaction product of a thermosetting resin, curing catalyst, and surface-treated nanoparticles that are substantially spherical, non-agglomerated, amorphous, and solid.
摘要:
A method of bonding a first article to a second article is provided. The method involves the use of a flowable, adhesive composition that contains non-aggregated, surface-modified silica nanoparticles dispersed in an epoxy resin.
摘要:
Multilayer polymeric films which may be useful for protecting the leading edges of aircraft from rain and sand erosion are presented. Typical surface protection films comprising two or more layers of a first material alternating with one or more layers of a second material, wherein the first and second materials are different materials, wherein the first and second materials comprise first and second polymers, wherein the first and second materials have a first and second Shore hardness, and wherein the first Shore hardness is greater than the second Shore hardness by more than 5 A or more typically more than 10 A.
摘要:
Polyurethane nanocomposites are provided which include a polyurethane and surface modified silica nanoparticles covalently bound into the polyurethane. High loadings in excess of 30% may be achieved. In some embodiments, the silica nanoparticles are covalently bound to the polyurethane polymer through a linkage derived from a surface-modifying compound comprising a silane functional group and a polyol segment. In some embodiments the polyurethane nanocomposite may be provided as a tape or film. In addition, precursors for a polyurethane nanocomposites are provided comprising: a first polyol and surface modified silica nanoparticles dispersed within the first polyol. In some embodiments, the silica nanoparticles are surface-modified by reaction with a surface-modifying compound comprising a silane functional group and a polyol segment derived from a second polyol, which may be the same or different from the first polyol.
摘要:
The invention relates to a dental composition comprising a) a hardenable compound (A1), b) a filler (B1), c) an initiator (C1) being able to initiate curing of compound (A1), compound (A1) having the structure A-(-S1-U-S2-MA)n, with A being a connector element, S1 being a spacergroup comprised of units connected with each other and comprising at least 4 units, S2 being a spacergroup comprised of units connected with each other and comprising at least 4 units, U being an urethane, an amide or an urea group connecting spacergroups S1 and S2, MA being an acrylate or methacrylate group and n being 3 to 6. The invention also relates to a process of producing this dental composition and using the dental composition e.g. as a temporary and/or long term crown and bridge material.
摘要翻译:本发明涉及一种牙科用组合物,其含有a)可硬化化合物(A1),b)填料(B1),c)能引发化合物(A1)固化的引发剂(C1),具有结构 A - ( - S1-U-S2-MA)n,其中A是连接器元件,S1是由彼此连接并且包括至少4个单元的单元组成的空间组,S2是由相互连接的单元组成的空间组 并且包含至少4个单元,U是连接空间群S1和S2的氨基甲酸酯,酰胺或脲基,MA是丙烯酸酯或甲基丙烯酸酯基,n是3至6.本发明还涉及制备该牙科组合物的方法 并使用牙科组合物例如 作为临时和/或长期的冠和桥材料。
摘要:
The invention relates to a dental composition comprising a) a hardenable compound (A1), b) a filler (B1), c) an initiator (C1) being able to initiate curing of compound (A1), compound (A1) having the structure A-(-S1-U-S2-MA)n, with A being a connector element, S1 being a spacergroup comprised of units connected with each other and comprising at least 4 units, S2 being a spacergroup comprised of units connected with each other and comprising at least 4 units, U being an urethane, an amide or an urea group connecting spacergroups S1 and S2, MA being an acrylate or methacrylate group and n being 3 to 6. The invention also relates to a process of producing this dental composition and using the dental composition e.g. as a temporary and/or long term crown and bridge material.
摘要翻译:本发明涉及一种牙科用组合物,其含有a)可硬化化合物(A1),b)填料(B1),c)能引发化合物(A1)固化的引发剂(C1),具有结构 A - ( - S1-U-S2-MA)n,其中A是连接器元件,S1是由彼此连接并且包括至少4个单元的单元组成的空间组,S2是由相互连接的单元组成的空间组 并且包含至少4个单元,U是连接空间群S1和S2的氨基甲酸酯,酰胺或脲基,MA是丙烯酸酯或甲基丙烯酸酯基,n是3至6.本发明还涉及制备该牙科组合物的方法 并使用牙科组合物例如 作为临时和/或长期的冠和桥材料。
摘要:
A method of bonding a first article to a second article is provided. The method involves the use of a flowable, adhesive composition that contains non-aggregated, surface-modified silica nanoparticles dispersed in an epoxy resin.
摘要:
Compositions comprise (a) a curable resin sol comprising a colloidal dispersion of substantially spherical, substantially inorganic microparticles (e.g., surface-modified silica) in curable resin (e.g., epoxy resin); and (b) reinforcing fibers (e.g., carbon fibers). The compositions can be cured to provide fiber-reinforced composites which exhibit improved resin-dominated mechanical properties.
摘要:
A curable composition is described, including a gel material derived from the curable composition, and medical articles including such material, wherein the transparent gel material includes a polymerized monofunctional poly(alkylene oxide) macromonomer component and a surface modified nanoparticle component.