摘要:
The present invention provides a powder composition in multiple separate parts comprising one or more than one resinous powder component in one or more than one part and, for each resin component, one or more than one powder, liquid or gaseous curing agent component in one or more than one separate part, wherein the average particle size ratio of each resinous powder component to its curing agent powder or droplet component ranges from 1.3:1 to 60:1 to insure the attraction of the resin and its curing agent to one another. Useful resins may include epoxy resin, polyester resin or their combination. The shelf life of the powder composition can be extended indefinitely by storing each resin and its curing agent in separate parts. However, each resin and its curing agent react within a period of from 0.01 to 600 seconds to form a cured powder coating when combined at a temperature of from 20null C. and 200null C. to enable very low temperature cure. In addition, the present invention provides a method of forming a powder coating from the inventive composition which comprises combining each of the separate parts in stream while or by applying them to a substrate, for example, as two or more than two separate feed streams from a single applicator device, followed by curing.
摘要:
Fluoroolefin/acid group or protected acid group-containing copolymers for photoresist compositions and microlithography methods employing the photoresist compositions are described. These copolymer compositions comprise 1) at least one fluoroolefin, preferably hexafluoroisobutylene, and 2) an acid group or a protected acid group (e.g., a t-alkyl ester, preferably a t-butyl ester), which together impart high ultraviolet (UV) transparency and developability in basic media to these materials. The materials of this invention have high UV transparency, particularly at short wavelengths, e.g., 157 nm and 193 nm, which makes them useful for lithography at these short wavelengths.
摘要:
Fluoropolymer particles are subjected to high energy treatment so as to change the chemical functionality of the particle surfaces and thereby change the surface characteristics of the particles. These characteristics improve the usefulness of these particles and can make them highly dispersible, even in water. The surface treated fluoropolymer particles are subject to a chemical crosslinking process, or alternatively, are subject to a high energy treatment process, and may optionally be pretreated with a macromolecular chemical species prior to the foregoing processes. The high energy treatment can be used to both surface treat the fluoropolymer particles and in some embodiments, may also cause chain scission of the fluoropolymers to thereby reduce the molecular weight of the fluoropolymer particles. The surface treated fluoropolymer particles can be used to form fluoropolymer coatings on various substrates.
摘要:
An elastomer sealing material having low dielectric constant and low dielectric dissipation, which is satisfactory with both of resistance to oxygen plasma and non-adhesion to quartz and can be applied to apparatus utilizing microwaves, is disclosed. The plasma-resistant fluorine-based elastomer sealing material comprises a fluorine-based elastomer having a divalent perfluoropolyether or divalent perfluoroalkylene structure in the main chain thereof and having two or more hydrosilyl groups and addition-reactive alkenyl groups in the terminals or side chains thereof, and a polymer having two or more hydrosilyl groups in the molecule and being capable of addition reacting with the alkenyl groups, the fluorine-based elastomer being crosslinked with the polymer.
摘要:
This invention concerns a method for forming ionomers by treatment with ammonium carbonate of copolymers having a substantially fluorinated, but not perfluorinated, polyethylene backbone having pendant groups of fluoroalkoxy sulfonyl fluoride. Ionomers derived therefrom by ion exchange are useful in electrochemical applications such as batteries, fuel cells, electrolysis cells, ion exchange membranes, sensors, electrochemical capacitors, and modified electrodes.
摘要:
Spherulites in a molded article obtained from a melt-processable crystalline fluorine-containing resin composition are minimized to give the transparent molded article having a smooth surface and being resistant to contamination. An agent for minimizing spherulite size which comprises an amorphous fluorine-containing polymer or a fluorine-containing multi-segment polymer. The fluorine-containing multi-segment polymer comprises an amorphous segment and a crystalline segment.
摘要:
The present invention relates generally to a polymer having co-continuous architecture. More particularly, the present invention is directed to a single or plurality of polymer layers in polymeric, co-polymeric, hybrid or blend formation comprising at least one polymer layer having co-continuous architecture. The co-continuous architecture of the one or more polymers permits or otherwise facilitates accessibility of functional groups to an external environment or at least one polymeric layer. The accessible, i.e. co-continuous, nature of the functional groups, in or on the one or more polymers facilitates solid phase chemical processes, chromatography and ion exchange applications. The one or more polymers may also be used as a solid support for a range of diagnostic applications. The present invention further provides a solid support comprising a substrate polymer and one or more further polymers each in pellicular formation with respect to each other and wherein the resulting hybrid polymer comprises a polymer layer which is co-continuous with respect to the substrate polymer and functional groups thereon relative to a solution or solvent phase or other environmental medium surrounding the hybrid polymer. In one form, the co-continuous architecture of a polymer is said to be a polymer having porous-like properties. The present invention further contemplates a method for generating polymers having co-continuous architecture and their use inter alia in solid phase processes including solid phase chemical processes, chromatography and ion exchange as well as their use in a range of diagnostic applications. The present invention further provides a hybrid polymer having two or more polymers in pellicular formation and comprising a polymer layer which is co-continuous with respect to functional groups thereon and the surrounding environment and having a substrate polymer portion with a mouldable shape with a particular mechanical strength and an ability to protect polymeric and/or functional chemical reactivities grafted thereto. In one preferred embodiment, the present invention provides co-continuous architecture formation through use of non-complementary polymers where at least one polymer or co-polymer in a blend of polymers is removable by extraction, salvation or any other chemical or physical means such as but not limited to hydrolysis or degradation. The present invention also provides a polymer having co-continuous architecture in hybrid formation with a rigid basement substrate.
摘要:
The present invention relates generally to a grafting process comprising the formation of a grafted polymeric structure having a substrate polymer in hybrid formation with one or more of the same or other polymers or monomeric subunits thereof. More particularly, the present invention contemplates a method of generating a homogenous or heterogenous grafted polymer by inducing or otherwise facilitating free radical formation to initiate polymerization of monomer units corresponding to the same or different polymers to a substrate polymer previously subjected to physical stress means. The resulting hybrid polymer may comprise a substrate polymer and a population of a second or further polymers in homogenous or heterogenous hybrid formation with the substrate polymer. A homogenous population includes a grafted population of the same polymer whereas a heterogenous population comprises a grafted population of two or more different polymers. The homogenous or heterogenous population may be in a random or patterned array and may be regarded, in one embodiment, as reactive or interactive centres for solid phase organic synthesis and binding of polymeric and/or chemically interactive molecules. The present invention also discloses a method to render polymers, previously regarded as not being suitable material for graft formation, capable of receiving a graft polymer in a heterogenous or homogenous fashion. Thus, the instant invention permits the production of a new range of hybrid polymer including copolymer materials and blends of polymers.
摘要:
Polycyclic fluorine-containing polymers and photoresists and associated processes for microlithography in the extreme, far, and near UV are disclosed. The polycyclic fluorine-containing polymer is derived from a repeat unit comprising the polycyclic reaction product of norbomadiene and a fluorolefin. The polymer may also contain a repeat unit derived from one or more additional monomers such as a fluorolefin, specifically tetrafluoroethylene, a fluoroalcohol, or an acrylate.
摘要:
Copolymers formed by TFE and FMVE containing FMVE in percent by moles from 2.5% to 8%; the % TFE moles being the complement to 100% of the FMVE moles.