Abstract:
A composition of matter and a structure fabricated using the composition. The composition comprising; a resin; polymeric nano-particles dispersed in the resin, each of the polymeric nano-particle comprising a multi-arm core polymer and pendent polymers attached to the multi-arm core polymer, the multi-arm core polymer immiscible with the resin and the pendent polymers miscible with the resin; and a solvent, the solvent volatile at a first temperature, the resin cross-linkable at a second temperature, the polymeric nano-particle decomposable at a third temperature, the third temperature higher than the second temperature, the second temperature higher than the first temperature, wherein a thickness of a layer of the composition shrinks by less than about 3.5% between heating the layer from the second temperature to the third temperature.
Abstract:
Block copolymers of polyimide and poly (phenylquinoxaline) are synthesized. They are useful as packaging materials in the electronics industry.
Abstract:
Integrated circuit module wherein the cap is sealed to the substrate with a liquid crystalline polyester melt containing about 25 to about 100 mole percent of recurring Units I and about 75 to 0 mole percent of recurring Units II whereinandwherein each R and R, is arylene or cycloalkylene or alkylene or alkylidene.
Abstract:
A substrate is provided with a polyimide coating having good planarisation and good mechanical and thermal stability, by applying to the substrate an amino-terminated oligomer and an ester, with the oligomer being formed from an aromatic diamine and from an aromatic dianhydride, and by reacting the oligomer and the ester in situ. The ester is formed from an aromatic tetracarboxylic acid and an alcohol, and the ester is such that it reacts with an amine group of the oligomer to form a high molecular weight polyamide at a temperature between 40 DEG C and 140 DEG C, and continues to react to form a cyclic imide.
Abstract:
Thin films of polyimide having electrical insulation, low thermal expansion, high glass transition temperature, and good ahesion are made by dispersing fine domains of relatively flexible polyimide which is fluorinated in a matrix of relatively rigid polyimide.
Abstract:
Thin films of polyimide having electrical insulation, low thermal expansion, high glass transition temperature, and good ahesion are made by dispersing fine domains of relatively flexible polyimide which is fluorinated in a matrix of relatively rigid polyimide.
Abstract:
Block copolymers of polyimide and poly (phenylquinoxaline) are synthesized. They are useful as packaging materials in the electronics industry.
Abstract:
PROCESS FOR PLANARIZING A SUBSTRATE A surface coating of high glass temperature and superior mechanical properties along with excellent planarization and gap filling is used to coat substrates. The coating comprises a polyamide alkyl ester from a pyromellitic alkyl diester and a para-linked aromatic diamine dissolved in a solvent containing at least 10% of a co-solvent boiling above 220.degree.C.