Abstract:
Dendrimer/hyperbranched materials are combined with polyimide to form a low CTE material for use as a dielectric substrate layer or an underfill. In the alternative, ruthenium carbene complexes are used to catalyze ROMP cross-linking reactions in polyimides to produce a class of cross-linkable, thermal and mechanical stable material for use as a dielectric substrate or underfill. In another alternative, dendrimers/hyperbranched materials are synthesized by different methods to produce low viscosity, high Tg, fast curing, mechanically and chemically stable materials for imprinting applications.
Abstract:
The present invention relates to composition comprising at least one compound obtained from the reaction of at least one compound (i) having a refractive index nD20 of at least 1.50 comprising at least one isocyanate-reactable functional group —XH, wherein each of X is, independently, O or NR, at least one polyisocyanate (ii), and, optionally, at least one compound (iii) comprising at least one isocyanate-reactable functional group —YH and at least one curable functional group Q, wherein each of Y is, independently, O, NR or S, and its use for making high refractive index coatings and films.
Abstract:
An embodiment of the present invention is a technique to form a resin. A mixture is formed by a curing agent dissolved in the epoxy resin. The epoxy resin contains a first rigid rod mesogen. The curing agent contains a second rigid rod mesogen and one of a hydroxyl, amine, and anhydride.
Abstract:
According to one aspect of the invention, a polymer device and a method of constructing a polymer device are provided. The polymer device includes a first conductor, a second conductor, and a polymeric body between the first and second conductors. The polymeric body includes a polymer material and a phyllosilicate material.
Abstract:
Methods for fabricating thermal management systems for micro-component devices are described herein. The methods may include initially overlaying a target substrate with a blank that is in sheet form, and stamping a microchannel structure having a plurality of outer walls enclosing a predefined area from the blank. The microchannel structure may then be bonded to a heat dissipating side opposite from a micro-component device facing side of a first substrate, the micro-component device facing side of the first substrate being adapted to thermally engage with the micro-component device. The microchannel structure may then be bonded to a second substrate opposite the first substrate, resulting in a closed volume microchannel being defined. Finally, the defined microchannel may then be substantially filled with a fluid thermal interface material.
Abstract:
Integrated circuit packages and their manufacture are described, wherein the packages comprise dendrimers or hyperbranched polymers. In some implementations, the dendrimers or hyperbranched polymers include repeat units having one or more ring structures and having surface groups to react with one or more components of a plastic. In some implementations, the dendrimers or hyperbranched polymers have a glass transition temperature of less than an operating temperature of the integrated circuit and form at least a partially separate phase.
Abstract:
A composition including an amount of at least one vinyl terminated polymer; an amount of at least one cross-linker comprising a terminal Si—H unit; an amount of at least one thermally conductive first filler, and at least one thermally conductive second filler, wherein a melting point of the first filler is greater than the melting point of the second filler. An apparatus including a package configured to mate with a printed circuit board; a semiconductor device coupled to the package; a thermal element; and a curable thermal material disposed between the thermal element and the semiconductor device.
Abstract:
A curable material useful as thermal material comprises at least one vinyl-terminated silicone oil; at least one conductive filler; and at least one hydrogen terminated silicone oil. The hydrogen terminated silicone oil is used to reduce a shear modulus G′ of the cured thermal interface material.
Abstract:
Disclosed are novel polyether compounds obtained by the reaction or polymerization of 3,4-epoxy-1-butene in the presence of an onium iodide compound such as an ammonium or phosphonium iodide, an organotin compound such as a trihydrocarbyltin iodide, and a nucleophilic initiator compound. The polyether compounds comprise n units of residue (1) and m units of residue (2), wherein the total value of n+m is 2 to 70, m/(n+m) is greater than 0.75 and up to 0.98, and residues (1) and (2) have the structures: ##STR1##
Abstract:
A segmented copolyester-ether polymer comprises 9.5 to 33 percent by weight hard segment residues of polybutylene terephthalate and 0.5 to 67 percent by weight soft segment residues of a polyether polyol comprised of n units of residue (1) and m units of residue (2), wherein the total value of n+m is in the range 2 to 70, m/(n+m) is in the range 0.05 to 0.98, and residues (1) and (2) have the structures: ##STR1## The polyether polyol is further characterized in that at least 95 percent of the hydroxyl groups are primary hydroxyl groups.