Abstract: The present invention provides a system and method for measuring an impedance of one or more target cells before and after an electroporation protocol has been applied to the one or more target cells. The result of the impedance measurement provides a feedback control that can be implemented during and/or after the electroporation protocol to customize the electrical treatment for a particular target cell or cellular tissue.

Abstract: There is provided a process for stabilizing additive concentrates comprising or consisting of one or more additives in dialkylsilanol terminated polydiorganosiloxane polymers for use in condensation curable organosiloxane compositions. Processes for making condensation curable organosiloxane compositions incorporating the additive concentrates as well as the use of the stabilized additive concentrates in condensation cure organosiloxane compositions are also described. The stabilizer used is a polydialkylsiloxane having the general formula: R33—Si—O—((R2)2SiO)d—Si—R33 where R2 is an alkyl or phenyl group, each R3 group may be the same or different and are selected from R2 alkenyl or alkynyl groups and the average value of d is between 7 and 20, in an amount of from 0.5 to 5 wt. % of the composition.

Abstract: This disclosure relates to a method for the in-situ encapsulation and/or insulation of piping using silicone-based compositions such as liquid silicone rubber materials and/or silicone foams. The method is useful for encapsulation and/or insulation of underground piping, particularly underground piping carrying high temperature (e.g., >120° C.) fluids, such as steam. The in-situ encapsulation and/or insulation may be done by inserting a hose into a pipe cavity so that a first end of the hose is remotely positioned next to the pipe and a second end of the hose is attached to a pumping system. A silicone composition is pumped through the hose and into the cavity surrounding from the remote first end of the tubing at a first predefined rate, and the hose is gradually withdrawn from the cavity at a second predefined rate. The silicone material is allowed to cure and become rigid, thereby encapsulating and/or insulating the pipe.

Abstract: A hydrosilylation curable silicone elastomeric coating composition, which generally has a low viscosity to be self-leveling and/or which is designed for coating transparent substrates (such as glass) is provided, as well as a coated article comprising a substrate coated with a silicone elastomeric coating and the preparation and use thereof. The composition comprises: (i) at least one polydiorganosiloxane polymer having a viscosity of from 0.10 to 1,000 Pa.s at 25° C. and having at least two alkenyl and/or alkynyl groups per molecule; (ii) reinforcing filler comprising an MQ resin and optionally silica; (iii) an organohydrogenpolysiloxane having at least two silicon-bonded hydrogen atoms per molecule; (iv) a hydrosilylation catalyst; and (v) an adhesion promoter.

Abstract: Alkoxylated hydrophobes that include a poly(alkylene oxide) chain of at least 5 oxyalkylene units having a terminal secondary hydroxyl group or a terminal C1-8 hydrocarbyl group are effective internal mold release agents for epoxy resin moldings. The alkoxylated hydrophobe, when mixed with an epoxy resin, forms a mixture that is highly stable when heated to 80 to 100° C. and held at that temperature for a period of as much as 22 days.

Abstract: Alkoxylated hydrophobes that include a poly(alkylene oxide) chain of at least 5 oxyalkylene units having a terminal secondary hydroxyl group or a terminal C1?8 hydrocarbyl group are effective internal mold release agents for epoxy resin moldings. The alkoxylated hydrophobe, when mixed with an epoxy resin, forms a mixture that is highly stable when heated to 80 to 100° C. and held at that temperature for a period of as much as 22 days.

Abstract: A two-component curable epoxy resin system having an epoxy component containing a unique combination of two or more epoxy resins with at least one of the epoxy resins being an epoxy novolac type resin. The composite made from such resin system exhibits high glass transition temperature.

Abstract: An epoxy resin composition including an epoxy functionalized resin, a hardener, and an internal mold release agent, wherein the epoxy functionalized resin has a monohydrolyzed resin content of at least about 0.1 wt %.

Abstract: A novel sulfanilamide containing epoxy resin composition capable of fast curing without negative impact on glass transition temperature or mechanical performance.

Abstract: A two-component curable epoxy resin system including a dye solution. The resin system includes an epoxy resin component containing at least 80% by weight of a polyglycidyl ether of a polyphenol. The system also includes a hardener mixture containing mainly polyethylene tetraamines. The system includes triethylene diamine in specific amounts as a catalyst. The system has beneficial curing characteristics with desired color that make it useful for producing fiber-reinforced composites in a resin transfer molding process.

Abstract: A curable resin system comprising 1) an epoxy component having a polyglycidyl ether of a polyphenol having an epoxy equivalent weight of up to about 190; and 2) a hardener component comprising polyethylene tetraamine mixture; wherein the epoxy component has a viscosity of less than 9000 mPa·s at 25° C.

Abstract: The present invention provides curable moldable compositions comprising from 10 to 80 volume % of heat resistant fiber compositions, a two component resin mixture of (i) one or more epoxy resins, and (ii) a hardener comprising a combination of triethylenetetraamine (TETA) and from 3 to 15 wt. %, based on the weight of the TETA, of 2-phenylimidazole (2-PI). The compositions cure to provide composite articles having a short demold time of 90 s or less at 130° C. and 101 kPa and a high DSC glass transition temperature (Tg) of from 130 to 180° C. when cured at 130° C. for 90 seconds at a pressure of 101 kPa. The invention enables lightweight, heat resistant composite articles, such as for use in automotive applications.

Abstract: A two-component curable epoxy resin system having an epoxy component containing a unique combination of two or more epoxy resins with at least one of the epoxy resins being an epoxy novolac type resin. The composite made from such resin system exhibits high glass transition temperature.

Abstract: The instant invention provides an isocyanate trimerization catalyst system, a precursor formulation, a process for trimerizing isocyanates, rigid foams made therefrom, and a process for making such foams. The trimerization catalyst system comprises: (a) a phosphatrane cation; and (b) an isocyanate-trimer inducing anion; wherein said trimerization catalyst system has a trimerization activation temperature in the range of equal to or less than 73° C. The precursor formulation comprises (1) at least 25 percent by weight of polyol, based on the weight of the precursor formulation; (2) less than 15 percent by weight of a trimerization catalyst system, based on the weight of the precursor formulation, comprising; (a) a phosphatrane cation; and (c) an isocyanate-trimer inducing anion; wherein said trimerization catalyst system has a trimerization activation temperature in the range of equal to or less than 73° C.

Abstract: A two-component curable epoxy resin system having an epoxy component containing a unique combination of two or more epoxy resins with at least one of the epoxy resins being an epoxy novolac type resin. The composite made from such resin system exhibits high glass transition temperature.

Abstract: The invention relates to curable epoxy resin systems comprising polyethylene tetraamine and a tin catalyst as hardening agents, and optionally comprising 1,4-diaza[2.2.2]bicyclo octane. The invention also relates to articles made therefrom, including composites such as carbon fiber reinforced composites. The curable epoxy resins have rapid demold times and/or high glass temperature.

Abstract: A two-component curable epoxy resin system having an epoxy component containing a unique combination of two or more epoxy resins with at least one of the epoxy resins being an epoxy novolac type resin. The composite made from such resin system exhibits high glass transition temperature.

Abstract: A two-component curable epoxy resin system including a dye solution. The resin system includes an epoxy resin component containing at least 80% by weight of a polyglycidyl ether of a polyphenol. The system also includes a hardener mixture containing mainly polyethylene tetraamines. The system includes triethylene diamine in specific amounts as a catalyst. The system has beneficial curing characteristics with desired color that make it useful for producing fiber-reinforced composites in a resin transfer molding process.

Abstract: The instant invention provides an isocyanate trimerisation catalyst system, a precursor formulation, a process for trimerising isocyanates, rigid foams made therefrom, and a process for making such foams. The trimerisation catalyst system comprises: (a) a phosphatrane cation; and (b) an isocyanate-trimer inducing anion; wherein said trimerisation catalyst system has a trimerisation activation temperature in the range of equal to or less than 73° C. The precursor formulation comprises (1) at least 25 percent by weight of polyol, based on the weight of the precursor formulation; (2) less than 15 percent by weight of a trimerisation catalyst system, based on the weight of the precursor formulation, comprising; (a) a phosphatrane cation; and (c) an isocyanate-trimer inducing anion; wherein said trimerisation catalyst system has a trimerisation activation temperature in the range of equal to or less than 73° C.

Abstract: A two-component curable epoxy resin system having an epoxy component containing a unique combination of two or more epoxy resins with at least one of the epoxy resins being an epoxy novolac type resin. The composite made from such resin system exhibits high glass transition temperature.